xref: /vim-8.2.3635/src/option.c (revision 94688b8a) 
1 /* vi:set ts=8 sts=4 sw=4 noet:
2  *
3  * VIM - Vi IMproved	by Bram Moolenaar
4  *
5  * Do ":help uganda"  in Vim to read copying and usage conditions.
6  * Do ":help credits" in Vim to see a list of people who contributed.
7  * See README.txt for an overview of the Vim source code.
8  */
9 
10 /*
11  * Code to handle user-settable options. This is all pretty much table-
12  * driven. Checklist for adding a new option:
13  * - Put it in the options array below (copy an existing entry).
14  * - For a global option: Add a variable for it in option.h.
15  * - For a buffer or window local option:
16  *   - Add a PV_XX entry to the enum below.
17  *   - Add a variable to the window or buffer struct in structs.h.
18  *   - For a window option, add some code to copy_winopt().
19  *   - For a buffer option, add some code to buf_copy_options().
20  *   - For a buffer string option, add code to check_buf_options().
21  * - If it's a numeric option, add any necessary bounds checks to do_set().
22  * - If it's a list of flags, add some code in do_set(), search for WW_ALL.
23  * - When adding an option with expansion (P_EXPAND), but with a different
24  *   default for Vi and Vim (no P_VI_DEF), add some code at VIMEXP.
25  * - Add documentation!  One line in doc/quickref.txt, full description in
26  *   options.txt, and any other related places.
27  * - Add an entry in runtime/optwin.vim.
28  * When making changes:
29  * - Adjust the help for the option in doc/option.txt.
30  * - When an entry has the P_VIM flag, or is lacking the P_VI_DEF flag, add a
31  *   comment at the help for the 'compatible' option.
32  */
33 
34 #define IN_OPTION_C
35 #include "vim.h"
36 
37 /*
38  * The options that are local to a window or buffer have "indir" set to one of
39  * these values.  Special values:
40  * PV_NONE: global option.
41  * PV_WIN is added: window-local option
42  * PV_BUF is added: buffer-local option
43  * PV_BOTH is added: global option which also has a local value.
44  */
45 #define PV_BOTH 0x1000
46 #define PV_WIN  0x2000
47 #define PV_BUF  0x4000
48 #define PV_MASK 0x0fff
49 #define OPT_WIN(x)  (idopt_T)(PV_WIN + (int)(x))
50 #define OPT_BUF(x)  (idopt_T)(PV_BUF + (int)(x))
51 #define OPT_BOTH(x) (idopt_T)(PV_BOTH + (int)(x))
52 
53 /*
54  * Definition of the PV_ values for buffer-local options.
55  * The BV_ values are defined in option.h.
56  */
57 #define PV_AI		OPT_BUF(BV_AI)
58 #define PV_AR		OPT_BOTH(OPT_BUF(BV_AR))
59 #define PV_BKC		OPT_BOTH(OPT_BUF(BV_BKC))
60 #define PV_BH		OPT_BUF(BV_BH)
61 #define PV_BT		OPT_BUF(BV_BT)
62 #ifdef FEAT_QUICKFIX
63 # define PV_EFM		OPT_BOTH(OPT_BUF(BV_EFM))
64 # define PV_GP		OPT_BOTH(OPT_BUF(BV_GP))
65 # define PV_MP		OPT_BOTH(OPT_BUF(BV_MP))
66 #endif
67 #define PV_BIN		OPT_BUF(BV_BIN)
68 #define PV_BL		OPT_BUF(BV_BL)
69 #define PV_BOMB		OPT_BUF(BV_BOMB)
70 #define PV_CI		OPT_BUF(BV_CI)
71 #ifdef FEAT_CINDENT
72 # define PV_CIN		OPT_BUF(BV_CIN)
73 # define PV_CINK	OPT_BUF(BV_CINK)
74 # define PV_CINO	OPT_BUF(BV_CINO)
75 #endif
76 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
77 # define PV_CINW	OPT_BUF(BV_CINW)
78 #endif
79 #define PV_CM		OPT_BOTH(OPT_BUF(BV_CM))
80 #ifdef FEAT_FOLDING
81 # define PV_CMS		OPT_BUF(BV_CMS)
82 #endif
83 #ifdef FEAT_COMMENTS
84 # define PV_COM		OPT_BUF(BV_COM)
85 #endif
86 #ifdef FEAT_INS_EXPAND
87 # define PV_CPT		OPT_BUF(BV_CPT)
88 # define PV_DICT	OPT_BOTH(OPT_BUF(BV_DICT))
89 # define PV_TSR		OPT_BOTH(OPT_BUF(BV_TSR))
90 #endif
91 #ifdef FEAT_COMPL_FUNC
92 # define PV_CFU		OPT_BUF(BV_CFU)
93 #endif
94 #ifdef FEAT_FIND_ID
95 # define PV_DEF		OPT_BOTH(OPT_BUF(BV_DEF))
96 # define PV_INC		OPT_BOTH(OPT_BUF(BV_INC))
97 #endif
98 #define PV_EOL		OPT_BUF(BV_EOL)
99 #define PV_FIXEOL	OPT_BUF(BV_FIXEOL)
100 #define PV_EP		OPT_BOTH(OPT_BUF(BV_EP))
101 #define PV_ET		OPT_BUF(BV_ET)
102 #define PV_FENC		OPT_BUF(BV_FENC)
103 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
104 # define PV_BEXPR	OPT_BOTH(OPT_BUF(BV_BEXPR))
105 #endif
106 #define PV_FP		OPT_BOTH(OPT_BUF(BV_FP))
107 #ifdef FEAT_EVAL
108 # define PV_FEX		OPT_BUF(BV_FEX)
109 #endif
110 #define PV_FF		OPT_BUF(BV_FF)
111 #define PV_FLP		OPT_BUF(BV_FLP)
112 #define PV_FO		OPT_BUF(BV_FO)
113 #define PV_FT		OPT_BUF(BV_FT)
114 #define PV_IMI		OPT_BUF(BV_IMI)
115 #define PV_IMS		OPT_BUF(BV_IMS)
116 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
117 # define PV_INDE	OPT_BUF(BV_INDE)
118 # define PV_INDK	OPT_BUF(BV_INDK)
119 #endif
120 #if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
121 # define PV_INEX	OPT_BUF(BV_INEX)
122 #endif
123 #define PV_INF		OPT_BUF(BV_INF)
124 #define PV_ISK		OPT_BUF(BV_ISK)
125 #ifdef FEAT_CRYPT
126 # define PV_KEY		OPT_BUF(BV_KEY)
127 #endif
128 #ifdef FEAT_KEYMAP
129 # define PV_KMAP	OPT_BUF(BV_KMAP)
130 #endif
131 #define PV_KP		OPT_BOTH(OPT_BUF(BV_KP))
132 #ifdef FEAT_LISP
133 # define PV_LISP	OPT_BUF(BV_LISP)
134 # define PV_LW		OPT_BOTH(OPT_BUF(BV_LW))
135 #endif
136 #define PV_MENC		OPT_BOTH(OPT_BUF(BV_MENC))
137 #define PV_MA		OPT_BUF(BV_MA)
138 #define PV_ML		OPT_BUF(BV_ML)
139 #define PV_MOD		OPT_BUF(BV_MOD)
140 #define PV_MPS		OPT_BUF(BV_MPS)
141 #define PV_NF		OPT_BUF(BV_NF)
142 #ifdef FEAT_COMPL_FUNC
143 # define PV_OFU		OPT_BUF(BV_OFU)
144 #endif
145 #define PV_PATH		OPT_BOTH(OPT_BUF(BV_PATH))
146 #define PV_PI		OPT_BUF(BV_PI)
147 #ifdef FEAT_TEXTOBJ
148 # define PV_QE		OPT_BUF(BV_QE)
149 #endif
150 #define PV_RO		OPT_BUF(BV_RO)
151 #ifdef FEAT_SMARTINDENT
152 # define PV_SI		OPT_BUF(BV_SI)
153 #endif
154 #define PV_SN		OPT_BUF(BV_SN)
155 #ifdef FEAT_SYN_HL
156 # define PV_SMC		OPT_BUF(BV_SMC)
157 # define PV_SYN		OPT_BUF(BV_SYN)
158 #endif
159 #ifdef FEAT_SPELL
160 # define PV_SPC		OPT_BUF(BV_SPC)
161 # define PV_SPF		OPT_BUF(BV_SPF)
162 # define PV_SPL		OPT_BUF(BV_SPL)
163 #endif
164 #define PV_STS		OPT_BUF(BV_STS)
165 #ifdef FEAT_SEARCHPATH
166 # define PV_SUA		OPT_BUF(BV_SUA)
167 #endif
168 #define PV_SW		OPT_BUF(BV_SW)
169 #define PV_SWF		OPT_BUF(BV_SWF)
170 #define PV_TAGS		OPT_BOTH(OPT_BUF(BV_TAGS))
171 #define PV_TC		OPT_BOTH(OPT_BUF(BV_TC))
172 #define PV_TS		OPT_BUF(BV_TS)
173 #define PV_TW		OPT_BUF(BV_TW)
174 #define PV_TX		OPT_BUF(BV_TX)
175 #ifdef FEAT_PERSISTENT_UNDO
176 # define PV_UDF		OPT_BUF(BV_UDF)
177 #endif
178 #define PV_WM		OPT_BUF(BV_WM)
179 #ifdef FEAT_VARTABS
180 # define PV_VSTS		OPT_BUF(BV_VSTS)
181 # define PV_VTS		OPT_BUF(BV_VTS)
182 #endif
183 
184 /*
185  * Definition of the PV_ values for window-local options.
186  * The WV_ values are defined in option.h.
187  */
188 #define PV_LIST		OPT_WIN(WV_LIST)
189 #ifdef FEAT_ARABIC
190 # define PV_ARAB	OPT_WIN(WV_ARAB)
191 #endif
192 #ifdef FEAT_LINEBREAK
193 # define PV_BRI		OPT_WIN(WV_BRI)
194 # define PV_BRIOPT	OPT_WIN(WV_BRIOPT)
195 #endif
196 #ifdef FEAT_DIFF
197 # define PV_DIFF	OPT_WIN(WV_DIFF)
198 #endif
199 #ifdef FEAT_FOLDING
200 # define PV_FDC		OPT_WIN(WV_FDC)
201 # define PV_FEN		OPT_WIN(WV_FEN)
202 # define PV_FDI		OPT_WIN(WV_FDI)
203 # define PV_FDL		OPT_WIN(WV_FDL)
204 # define PV_FDM		OPT_WIN(WV_FDM)
205 # define PV_FML		OPT_WIN(WV_FML)
206 # define PV_FDN		OPT_WIN(WV_FDN)
207 # ifdef FEAT_EVAL
208 #  define PV_FDE	OPT_WIN(WV_FDE)
209 #  define PV_FDT	OPT_WIN(WV_FDT)
210 # endif
211 # define PV_FMR		OPT_WIN(WV_FMR)
212 #endif
213 #ifdef FEAT_LINEBREAK
214 # define PV_LBR		OPT_WIN(WV_LBR)
215 #endif
216 #define PV_NU		OPT_WIN(WV_NU)
217 #define PV_RNU		OPT_WIN(WV_RNU)
218 #ifdef FEAT_LINEBREAK
219 # define PV_NUW		OPT_WIN(WV_NUW)
220 #endif
221 #if defined(FEAT_QUICKFIX)
222 # define PV_PVW		OPT_WIN(WV_PVW)
223 #endif
224 #ifdef FEAT_RIGHTLEFT
225 # define PV_RL		OPT_WIN(WV_RL)
226 # define PV_RLC		OPT_WIN(WV_RLC)
227 #endif
228 #define PV_SCBIND	OPT_WIN(WV_SCBIND)
229 #define PV_SCROLL	OPT_WIN(WV_SCROLL)
230 #define PV_SISO		OPT_BOTH(OPT_WIN(WV_SISO))
231 #define PV_SO		OPT_BOTH(OPT_WIN(WV_SO))
232 #ifdef FEAT_SPELL
233 # define PV_SPELL	OPT_WIN(WV_SPELL)
234 #endif
235 #ifdef FEAT_SYN_HL
236 # define PV_CUC		OPT_WIN(WV_CUC)
237 # define PV_CUL		OPT_WIN(WV_CUL)
238 # define PV_CC		OPT_WIN(WV_CC)
239 #endif
240 #ifdef FEAT_STL_OPT
241 # define PV_STL		OPT_BOTH(OPT_WIN(WV_STL))
242 #endif
243 #define PV_UL		OPT_BOTH(OPT_BUF(BV_UL))
244 # define PV_WFH		OPT_WIN(WV_WFH)
245 # define PV_WFW		OPT_WIN(WV_WFW)
246 #define PV_WRAP		OPT_WIN(WV_WRAP)
247 #define PV_CRBIND	OPT_WIN(WV_CRBIND)
248 #ifdef FEAT_CONCEAL
249 # define PV_COCU	OPT_WIN(WV_COCU)
250 # define PV_COLE	OPT_WIN(WV_COLE)
251 #endif
252 #ifdef FEAT_TERMINAL
253 # define PV_TWK		OPT_WIN(WV_TWK)
254 # define PV_TWS		OPT_WIN(WV_TWS)
255 # define PV_TWSL	OPT_BUF(BV_TWSL)
256 # define PV_TMOD	OPT_WIN(WV_TMOD)
257 #endif
258 #ifdef FEAT_SIGNS
259 # define PV_SCL		OPT_WIN(WV_SCL)
260 #endif
261 
262 /* WV_ and BV_ values get typecasted to this for the "indir" field */
263 typedef enum
264 {
265     PV_NONE = 0,
266     PV_MAXVAL = 0xffff    /* to avoid warnings for value out of range */
267 } idopt_T;
268 
269 /*
270  * Options local to a window have a value local to a buffer and global to all
271  * buffers.  Indicate this by setting "var" to VAR_WIN.
272  */
273 #define VAR_WIN ((char_u *)-1)
274 
275 /*
276  * These are the global values for options which are also local to a buffer.
277  * Only to be used in option.c!
278  */
279 static int	p_ai;
280 static int	p_bin;
281 static int	p_bomb;
282 static char_u	*p_bh;
283 static char_u	*p_bt;
284 static int	p_bl;
285 static int	p_ci;
286 #ifdef FEAT_CINDENT
287 static int	p_cin;
288 static char_u	*p_cink;
289 static char_u	*p_cino;
290 #endif
291 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
292 static char_u	*p_cinw;
293 #endif
294 #ifdef FEAT_COMMENTS
295 static char_u	*p_com;
296 #endif
297 #ifdef FEAT_FOLDING
298 static char_u	*p_cms;
299 #endif
300 #ifdef FEAT_INS_EXPAND
301 static char_u	*p_cpt;
302 #endif
303 #ifdef FEAT_COMPL_FUNC
304 static char_u	*p_cfu;
305 static char_u	*p_ofu;
306 #endif
307 static int	p_eol;
308 static int	p_fixeol;
309 static int	p_et;
310 static char_u	*p_fenc;
311 static char_u	*p_ff;
312 static char_u	*p_fo;
313 static char_u	*p_flp;
314 static char_u	*p_ft;
315 static long	p_iminsert;
316 static long	p_imsearch;
317 #if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
318 static char_u	*p_inex;
319 #endif
320 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
321 static char_u	*p_inde;
322 static char_u	*p_indk;
323 #endif
324 #if defined(FEAT_EVAL)
325 static char_u	*p_fex;
326 #endif
327 static int	p_inf;
328 static char_u	*p_isk;
329 #ifdef FEAT_CRYPT
330 static char_u	*p_key;
331 #endif
332 #ifdef FEAT_LISP
333 static int	p_lisp;
334 #endif
335 static int	p_ml;
336 static int	p_ma;
337 static int	p_mod;
338 static char_u	*p_mps;
339 static char_u	*p_nf;
340 static int	p_pi;
341 #ifdef FEAT_TEXTOBJ
342 static char_u	*p_qe;
343 #endif
344 static int	p_ro;
345 #ifdef FEAT_SMARTINDENT
346 static int	p_si;
347 #endif
348 static int	p_sn;
349 static long	p_sts;
350 #if defined(FEAT_SEARCHPATH)
351 static char_u	*p_sua;
352 #endif
353 static long	p_sw;
354 static int	p_swf;
355 #ifdef FEAT_SYN_HL
356 static long	p_smc;
357 static char_u	*p_syn;
358 #endif
359 #ifdef FEAT_SPELL
360 static char_u	*p_spc;
361 static char_u	*p_spf;
362 static char_u	*p_spl;
363 #endif
364 static long	p_ts;
365 static long	p_tw;
366 static int	p_tx;
367 #ifdef FEAT_PERSISTENT_UNDO
368 static int	p_udf;
369 #endif
370 static long	p_wm;
371 #ifdef FEAT_VARTABS
372 static char_u	*p_vsts;
373 static char_u	*p_vts;
374 #endif
375 #ifdef FEAT_KEYMAP
376 static char_u	*p_keymap;
377 #endif
378 #ifdef FEAT_TERMINAL
379 static long	p_twsl;		/* 'termwinscroll' */
380 #endif
381 
382 /* Saved values for when 'bin' is set. */
383 static int	p_et_nobin;
384 static int	p_ml_nobin;
385 static long	p_tw_nobin;
386 static long	p_wm_nobin;
387 
388 /* Saved values for when 'paste' is set */
389 static int	p_ai_nopaste;
390 static int	p_et_nopaste;
391 static long	p_sts_nopaste;
392 static long	p_tw_nopaste;
393 static long	p_wm_nopaste;
394 #ifdef FEAT_VARTABS
395 static char_u	*p_vsts_nopaste;
396 #endif
397 
398 struct vimoption
399 {
400     char	*fullname;	// full option name
401     char	*shortname;	// permissible abbreviation
402     long_u	flags;		// see below
403     char_u	*var;		// global option: pointer to variable;
404 				// window-local option: VAR_WIN;
405 				// buffer-local option: global value
406     idopt_T	indir;		// global option: PV_NONE;
407 				// local option: indirect option index
408     char_u	*def_val[2];	// default values for variable (vi and vim)
409 #ifdef FEAT_EVAL
410     sctx_T	script_ctx;	// script context where the option was last set
411 # define SCTX_INIT , {0, 0, 0}
412 #else
413 # define SCTX_INIT
414 #endif
415 };
416 
417 #define VI_DEFAULT  0	    /* def_val[VI_DEFAULT] is Vi default value */
418 #define VIM_DEFAULT 1	    /* def_val[VIM_DEFAULT] is Vim default value */
419 
420 /*
421  * Flags
422  */
423 #define P_BOOL		0x01	/* the option is boolean */
424 #define P_NUM		0x02	/* the option is numeric */
425 #define P_STRING	0x04	/* the option is a string */
426 #define P_ALLOCED	0x08	/* the string option is in allocated memory,
427 				   must use free_string_option() when
428 				   assigning new value. Not set if default is
429 				   the same. */
430 #define P_EXPAND	0x10	/* environment expansion.  NOTE: P_EXPAND can
431 				   never be used for local or hidden options! */
432 #define P_NODEFAULT	0x40	/* don't set to default value */
433 #define P_DEF_ALLOCED	0x80	/* default value is in allocated memory, must
434 				    use vim_free() when assigning new value */
435 #define P_WAS_SET	0x100	/* option has been set/reset */
436 #define P_NO_MKRC	0x200	/* don't include in :mkvimrc output */
437 #define P_VI_DEF	0x400	/* Use Vi default for Vim */
438 #define P_VIM		0x800	/* Vim option, reset when 'cp' set */
439 
440 				/* when option changed, what to display: */
441 #define P_RSTAT		0x1000	/* redraw status lines */
442 #define P_RWIN		0x2000	/* redraw current window and recompute text */
443 #define P_RBUF		0x4000	/* redraw current buffer and recompute text */
444 #define P_RALL		0x6000	/* redraw all windows */
445 #define P_RCLR		0x7000	/* clear and redraw all */
446 
447 #define P_COMMA		 0x8000	 /* comma separated list */
448 #define P_ONECOMMA	0x18000L /* P_COMMA and cannot have two consecutive
449 				  * commas */
450 #define P_NODUP		0x20000L /* don't allow duplicate strings */
451 #define P_FLAGLIST	0x40000L /* list of single-char flags */
452 
453 #define P_SECURE	0x80000L /* cannot change in modeline or secure mode */
454 #define P_GETTEXT      0x100000L /* expand default value with _() */
455 #define P_NOGLOB       0x200000L /* do not use local value for global vimrc */
456 #define P_NFNAME       0x400000L /* only normal file name chars allowed */
457 #define P_INSECURE     0x800000L /* option was set from a modeline */
458 #define P_PRI_MKRC    0x1000000L /* priority for :mkvimrc (setting option has
459 				    side effects) */
460 #define P_NO_ML       0x2000000L /* not allowed in modeline */
461 #define P_CURSWANT    0x4000000L /* update curswant required; not needed when
462 				  * there is a redraw flag */
463 #define P_NDNAME      0x8000000L /* only normal dir name chars allowed */
464 #define P_RWINONLY   0x10000000L /* only redraw current window */
465 
466 #define ISK_LATIN1  (char_u *)"@,48-57,_,192-255"
467 
468 /* 'isprint' for latin1 is also used for MS-Windows cp1252, where 0x80 is used
469  * for the currency sign. */
470 #if defined(MSWIN)
471 # define ISP_LATIN1 (char_u *)"@,~-255"
472 #else
473 # define ISP_LATIN1 (char_u *)"@,161-255"
474 #endif
475 
476 # define HIGHLIGHT_INIT "8:SpecialKey,~:EndOfBuffer,@:NonText,d:Directory,e:ErrorMsg,i:IncSearch,l:Search,m:MoreMsg,M:ModeMsg,n:LineNr,N:CursorLineNr,r:Question,s:StatusLine,S:StatusLineNC,c:VertSplit,t:Title,v:Visual,V:VisualNOS,w:WarningMsg,W:WildMenu,f:Folded,F:FoldColumn,A:DiffAdd,C:DiffChange,D:DiffDelete,T:DiffText,>:SignColumn,-:Conceal,B:SpellBad,P:SpellCap,R:SpellRare,L:SpellLocal,+:Pmenu,=:PmenuSel,x:PmenuSbar,X:PmenuThumb,*:TabLine,#:TabLineSel,_:TabLineFill,!:CursorColumn,.:CursorLine,o:ColorColumn,q:QuickFixLine,z:StatusLineTerm,Z:StatusLineTermNC"
477 
478 /* Default python version for pyx* commands */
479 #if defined(FEAT_PYTHON) && defined(FEAT_PYTHON3)
480 # define DEFAULT_PYTHON_VER	0
481 #elif defined(FEAT_PYTHON3)
482 # define DEFAULT_PYTHON_VER	3
483 #elif defined(FEAT_PYTHON)
484 # define DEFAULT_PYTHON_VER	2
485 #else
486 # define DEFAULT_PYTHON_VER	0
487 #endif
488 
489 // used for 'cinkeys' and 'indentkeys'
490 #define INDENTKEYS_DEFAULT (char_u *)"0{,0},0),0],:,0#,!^F,o,O,e"
491 
492 /*
493  * options[] is initialized here.
494  * The order of the options MUST be alphabetic for ":set all" and findoption().
495  * All option names MUST start with a lowercase letter (for findoption()).
496  * Exception: "t_" options are at the end.
497  * The options with a NULL variable are 'hidden': a set command for them is
498  * ignored and they are not printed.
499  */
500 static struct vimoption options[] =
501 {
502     {"aleph",	    "al",   P_NUM|P_VI_DEF|P_CURSWANT,
503 #ifdef FEAT_RIGHTLEFT
504 			    (char_u *)&p_aleph, PV_NONE,
505 #else
506 			    (char_u *)NULL, PV_NONE,
507 #endif
508 			    {
509 #if (defined(WIN3264)) && !defined(FEAT_GUI_W32)
510 			    (char_u *)128L,
511 #else
512 			    (char_u *)224L,
513 #endif
514 					    (char_u *)0L} SCTX_INIT},
515     {"antialias",   "anti", P_BOOL|P_VI_DEF|P_VIM|P_RCLR,
516 #if defined(FEAT_GUI_MAC)
517 			    (char_u *)&p_antialias, PV_NONE,
518 			    {(char_u *)FALSE, (char_u *)FALSE}
519 #else
520 			    (char_u *)NULL, PV_NONE,
521 			    {(char_u *)FALSE, (char_u *)FALSE}
522 #endif
523 			    SCTX_INIT},
524     {"arabic",	    "arab", P_BOOL|P_VI_DEF|P_VIM|P_CURSWANT,
525 #ifdef FEAT_ARABIC
526 			    (char_u *)VAR_WIN, PV_ARAB,
527 #else
528 			    (char_u *)NULL, PV_NONE,
529 #endif
530 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
531     {"arabicshape", "arshape", P_BOOL|P_VI_DEF|P_VIM|P_RCLR,
532 #ifdef FEAT_ARABIC
533 			    (char_u *)&p_arshape, PV_NONE,
534 #else
535 			    (char_u *)NULL, PV_NONE,
536 #endif
537 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
538     {"allowrevins", "ari",  P_BOOL|P_VI_DEF|P_VIM,
539 #ifdef FEAT_RIGHTLEFT
540 			    (char_u *)&p_ari, PV_NONE,
541 #else
542 			    (char_u *)NULL, PV_NONE,
543 #endif
544 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
545     {"altkeymap",   "akm",  P_BOOL|P_VI_DEF,
546 #ifdef FEAT_FKMAP
547 			    (char_u *)&p_altkeymap, PV_NONE,
548 #else
549 			    (char_u *)NULL, PV_NONE,
550 #endif
551 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
552     {"ambiwidth",  "ambw",  P_STRING|P_VI_DEF|P_RCLR,
553 			    (char_u *)&p_ambw, PV_NONE,
554 			    {(char_u *)"single", (char_u *)0L}
555 			    SCTX_INIT},
556     {"autochdir",  "acd",   P_BOOL|P_VI_DEF,
557 #ifdef FEAT_AUTOCHDIR
558 			    (char_u *)&p_acd, PV_NONE,
559 			    {(char_u *)FALSE, (char_u *)0L}
560 #else
561 			    (char_u *)NULL, PV_NONE,
562 			    {(char_u *)0L, (char_u *)0L}
563 #endif
564 			    SCTX_INIT},
565     {"autoindent",  "ai",   P_BOOL|P_VI_DEF,
566 			    (char_u *)&p_ai, PV_AI,
567 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
568     {"autoprint",   "ap",   P_BOOL|P_VI_DEF,
569 			    (char_u *)NULL, PV_NONE,
570 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
571     {"autoread",    "ar",   P_BOOL|P_VI_DEF,
572 			    (char_u *)&p_ar, PV_AR,
573 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
574     {"autowrite",   "aw",   P_BOOL|P_VI_DEF,
575 			    (char_u *)&p_aw, PV_NONE,
576 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
577     {"autowriteall","awa",  P_BOOL|P_VI_DEF,
578 			    (char_u *)&p_awa, PV_NONE,
579 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
580     {"background",  "bg",   P_STRING|P_VI_DEF|P_RCLR,
581 			    (char_u *)&p_bg, PV_NONE,
582 			    {
583 #if (defined(WIN3264)) && !defined(FEAT_GUI)
584 			    (char_u *)"dark",
585 #else
586 			    (char_u *)"light",
587 #endif
588 					    (char_u *)0L} SCTX_INIT},
589     {"backspace",   "bs",   P_STRING|P_VI_DEF|P_VIM|P_ONECOMMA|P_NODUP,
590 			    (char_u *)&p_bs, PV_NONE,
591 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
592     {"backup",	    "bk",   P_BOOL|P_VI_DEF|P_VIM,
593 			    (char_u *)&p_bk, PV_NONE,
594 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
595     {"backupcopy",  "bkc",  P_STRING|P_VIM|P_ONECOMMA|P_NODUP,
596 			    (char_u *)&p_bkc, PV_BKC,
597 #ifdef UNIX
598 			    {(char_u *)"yes", (char_u *)"auto"}
599 #else
600 			    {(char_u *)"auto", (char_u *)"auto"}
601 #endif
602 			    SCTX_INIT},
603     {"backupdir",   "bdir", P_STRING|P_EXPAND|P_VI_DEF|P_ONECOMMA
604 							    |P_NODUP|P_SECURE,
605 			    (char_u *)&p_bdir, PV_NONE,
606 			    {(char_u *)DFLT_BDIR, (char_u *)0L} SCTX_INIT},
607     {"backupext",   "bex",  P_STRING|P_VI_DEF|P_NFNAME,
608 			    (char_u *)&p_bex, PV_NONE,
609 			    {
610 #ifdef VMS
611 			    (char_u *)"_",
612 #else
613 			    (char_u *)"~",
614 #endif
615 					    (char_u *)0L} SCTX_INIT},
616     {"backupskip",  "bsk",  P_STRING|P_VI_DEF|P_ONECOMMA,
617 #ifdef FEAT_WILDIGN
618 			    (char_u *)&p_bsk, PV_NONE,
619 			    {(char_u *)"", (char_u *)0L}
620 #else
621 			    (char_u *)NULL, PV_NONE,
622 			    {(char_u *)0L, (char_u *)0L}
623 #endif
624 			    SCTX_INIT},
625     {"balloondelay","bdlay",P_NUM|P_VI_DEF,
626 #ifdef FEAT_BEVAL
627 			    (char_u *)&p_bdlay, PV_NONE,
628 			    {(char_u *)600L, (char_u *)0L}
629 #else
630 			    (char_u *)NULL, PV_NONE,
631 			    {(char_u *)0L, (char_u *)0L}
632 #endif
633 			    SCTX_INIT},
634     {"ballooneval", "beval",P_BOOL|P_VI_DEF|P_NO_MKRC,
635 #ifdef FEAT_BEVAL_GUI
636 			    (char_u *)&p_beval, PV_NONE,
637 			    {(char_u *)FALSE, (char_u *)0L}
638 #else
639 			    (char_u *)NULL, PV_NONE,
640 			    {(char_u *)0L, (char_u *)0L}
641 #endif
642 			    SCTX_INIT},
643     {"balloonevalterm", "bevalterm",P_BOOL|P_VI_DEF|P_NO_MKRC,
644 #ifdef FEAT_BEVAL_TERM
645 			    (char_u *)&p_bevalterm, PV_NONE,
646 			    {(char_u *)FALSE, (char_u *)0L}
647 #else
648 			    (char_u *)NULL, PV_NONE,
649 			    {(char_u *)0L, (char_u *)0L}
650 #endif
651 			    SCTX_INIT},
652     {"balloonexpr", "bexpr", P_STRING|P_ALLOCED|P_VI_DEF|P_VIM,
653 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
654 			    (char_u *)&p_bexpr, PV_BEXPR,
655 			    {(char_u *)"", (char_u *)0L}
656 #else
657 			    (char_u *)NULL, PV_NONE,
658 			    {(char_u *)0L, (char_u *)0L}
659 #endif
660 			    SCTX_INIT},
661     {"beautify",    "bf",   P_BOOL|P_VI_DEF,
662 			    (char_u *)NULL, PV_NONE,
663 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
664     {"belloff",      "bo",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
665 			    (char_u *)&p_bo, PV_NONE,
666 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
667     {"binary",	    "bin",  P_BOOL|P_VI_DEF|P_RSTAT,
668 			    (char_u *)&p_bin, PV_BIN,
669 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
670     {"bioskey",	    "biosk",P_BOOL|P_VI_DEF,
671 			    (char_u *)NULL, PV_NONE,
672 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
673     {"bomb",	    NULL,   P_BOOL|P_NO_MKRC|P_VI_DEF|P_RSTAT,
674 			    (char_u *)&p_bomb, PV_BOMB,
675 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
676     {"breakat",	    "brk",  P_STRING|P_VI_DEF|P_RALL|P_FLAGLIST,
677 #ifdef FEAT_LINEBREAK
678 			    (char_u *)&p_breakat, PV_NONE,
679 			    {(char_u *)" \t!@*-+;:,./?", (char_u *)0L}
680 #else
681 			    (char_u *)NULL, PV_NONE,
682 			    {(char_u *)0L, (char_u *)0L}
683 #endif
684 			    SCTX_INIT},
685     {"breakindent",   "bri",  P_BOOL|P_VI_DEF|P_VIM|P_RWIN,
686 #ifdef FEAT_LINEBREAK
687 			    (char_u *)VAR_WIN, PV_BRI,
688 			    {(char_u *)FALSE, (char_u *)0L}
689 #else
690 			    (char_u *)NULL, PV_NONE,
691 			    {(char_u *)0L, (char_u *)0L}
692 #endif
693 			    SCTX_INIT},
694     {"breakindentopt", "briopt", P_STRING|P_ALLOCED|P_VI_DEF|P_RBUF
695 						  |P_ONECOMMA|P_NODUP,
696 #ifdef FEAT_LINEBREAK
697 			    (char_u *)VAR_WIN, PV_BRIOPT,
698 			    {(char_u *)"", (char_u *)NULL}
699 #else
700 			    (char_u *)NULL, PV_NONE,
701 			    {(char_u *)"", (char_u *)NULL}
702 #endif
703 			    SCTX_INIT},
704     {"browsedir",   "bsdir",P_STRING|P_VI_DEF,
705 #ifdef FEAT_BROWSE
706 			    (char_u *)&p_bsdir, PV_NONE,
707 			    {(char_u *)"last", (char_u *)0L}
708 #else
709 			    (char_u *)NULL, PV_NONE,
710 			    {(char_u *)0L, (char_u *)0L}
711 #endif
712 			    SCTX_INIT},
713     {"bufhidden",   "bh",   P_STRING|P_ALLOCED|P_VI_DEF|P_NOGLOB,
714 			    (char_u *)&p_bh, PV_BH,
715 			    {(char_u *)"", (char_u *)0L}
716 			    SCTX_INIT},
717     {"buflisted",   "bl",   P_BOOL|P_VI_DEF|P_NOGLOB,
718 			    (char_u *)&p_bl, PV_BL,
719 			    {(char_u *)1L, (char_u *)0L}
720 			    SCTX_INIT},
721     {"buftype",	    "bt",   P_STRING|P_ALLOCED|P_VI_DEF|P_NOGLOB,
722 			    (char_u *)&p_bt, PV_BT,
723 			    {(char_u *)"", (char_u *)0L}
724 			    SCTX_INIT},
725     {"casemap",	    "cmp",   P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
726 			    (char_u *)&p_cmp, PV_NONE,
727 			    {(char_u *)"internal,keepascii", (char_u *)0L}
728 			    SCTX_INIT},
729     {"cdpath",	    "cd",   P_STRING|P_EXPAND|P_VI_DEF|P_COMMA|P_NODUP,
730 #ifdef FEAT_SEARCHPATH
731 			    (char_u *)&p_cdpath, PV_NONE,
732 			    {(char_u *)",,", (char_u *)0L}
733 #else
734 			    (char_u *)NULL, PV_NONE,
735 			    {(char_u *)0L, (char_u *)0L}
736 #endif
737 			    SCTX_INIT},
738     {"cedit",	    NULL,   P_STRING,
739 #ifdef FEAT_CMDWIN
740 			    (char_u *)&p_cedit, PV_NONE,
741 			    {(char_u *)"", (char_u *)CTRL_F_STR}
742 #else
743 			    (char_u *)NULL, PV_NONE,
744 			    {(char_u *)0L, (char_u *)0L}
745 #endif
746 			    SCTX_INIT},
747     {"charconvert",  "ccv", P_STRING|P_VI_DEF|P_SECURE,
748 #if defined(FEAT_EVAL)
749 			    (char_u *)&p_ccv, PV_NONE,
750 			    {(char_u *)"", (char_u *)0L}
751 #else
752 			    (char_u *)NULL, PV_NONE,
753 			    {(char_u *)0L, (char_u *)0L}
754 #endif
755 			    SCTX_INIT},
756     {"cindent",	    "cin",  P_BOOL|P_VI_DEF|P_VIM,
757 #ifdef FEAT_CINDENT
758 			    (char_u *)&p_cin, PV_CIN,
759 #else
760 			    (char_u *)NULL, PV_NONE,
761 #endif
762 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
763     {"cinkeys",	    "cink", P_STRING|P_ALLOCED|P_VI_DEF|P_ONECOMMA|P_NODUP,
764 #ifdef FEAT_CINDENT
765 			    (char_u *)&p_cink, PV_CINK,
766 			    {INDENTKEYS_DEFAULT, (char_u *)0L}
767 #else
768 			    (char_u *)NULL, PV_NONE,
769 			    {(char_u *)0L, (char_u *)0L}
770 #endif
771 			    SCTX_INIT},
772     {"cinoptions",  "cino", P_STRING|P_ALLOCED|P_VI_DEF|P_ONECOMMA|P_NODUP,
773 #ifdef FEAT_CINDENT
774 			    (char_u *)&p_cino, PV_CINO,
775 #else
776 			    (char_u *)NULL, PV_NONE,
777 #endif
778 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
779     {"cinwords",    "cinw", P_STRING|P_ALLOCED|P_VI_DEF|P_ONECOMMA|P_NODUP,
780 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
781 			    (char_u *)&p_cinw, PV_CINW,
782 			    {(char_u *)"if,else,while,do,for,switch",
783 				(char_u *)0L}
784 #else
785 			    (char_u *)NULL, PV_NONE,
786 			    {(char_u *)0L, (char_u *)0L}
787 #endif
788 			    SCTX_INIT},
789     {"clipboard",   "cb",   P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
790 #ifdef FEAT_CLIPBOARD
791 			    (char_u *)&p_cb, PV_NONE,
792 # ifdef FEAT_XCLIPBOARD
793 			    {(char_u *)"autoselect,exclude:cons\\|linux",
794 							       (char_u *)0L}
795 # else
796 			    {(char_u *)"", (char_u *)0L}
797 # endif
798 #else
799 			    (char_u *)NULL, PV_NONE,
800 			    {(char_u *)"", (char_u *)0L}
801 #endif
802 			    SCTX_INIT},
803     {"cmdheight",   "ch",   P_NUM|P_VI_DEF|P_RALL,
804 			    (char_u *)&p_ch, PV_NONE,
805 			    {(char_u *)1L, (char_u *)0L} SCTX_INIT},
806     {"cmdwinheight", "cwh", P_NUM|P_VI_DEF,
807 #ifdef FEAT_CMDWIN
808 			    (char_u *)&p_cwh, PV_NONE,
809 #else
810 			    (char_u *)NULL, PV_NONE,
811 #endif
812 			    {(char_u *)7L, (char_u *)0L} SCTX_INIT},
813     {"colorcolumn", "cc",   P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP|P_RWIN,
814 #ifdef FEAT_SYN_HL
815 			    (char_u *)VAR_WIN, PV_CC,
816 #else
817 			    (char_u *)NULL, PV_NONE,
818 #endif
819 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
820     {"columns",	    "co",   P_NUM|P_NODEFAULT|P_NO_MKRC|P_VI_DEF|P_RCLR,
821 			    (char_u *)&Columns, PV_NONE,
822 			    {(char_u *)80L, (char_u *)0L} SCTX_INIT},
823     {"comments",    "com",  P_STRING|P_ALLOCED|P_VI_DEF|P_ONECOMMA
824 							  |P_NODUP|P_CURSWANT,
825 #ifdef FEAT_COMMENTS
826 			    (char_u *)&p_com, PV_COM,
827 			    {(char_u *)"s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-",
828 				(char_u *)0L}
829 #else
830 			    (char_u *)NULL, PV_NONE,
831 			    {(char_u *)0L, (char_u *)0L}
832 #endif
833 			    SCTX_INIT},
834     {"commentstring", "cms", P_STRING|P_ALLOCED|P_VI_DEF|P_CURSWANT,
835 #ifdef FEAT_FOLDING
836 			    (char_u *)&p_cms, PV_CMS,
837 			    {(char_u *)"/*%s*/", (char_u *)0L}
838 #else
839 			    (char_u *)NULL, PV_NONE,
840 			    {(char_u *)0L, (char_u *)0L}
841 #endif
842 			    SCTX_INIT},
843 			    /* P_PRI_MKRC isn't needed here, optval_default()
844 			     * always returns TRUE for 'compatible' */
845     {"compatible",  "cp",   P_BOOL|P_RALL,
846 			    (char_u *)&p_cp, PV_NONE,
847 			    {(char_u *)TRUE, (char_u *)FALSE} SCTX_INIT},
848     {"complete",    "cpt",  P_STRING|P_ALLOCED|P_VI_DEF|P_ONECOMMA|P_NODUP,
849 #ifdef FEAT_INS_EXPAND
850 			    (char_u *)&p_cpt, PV_CPT,
851 			    {(char_u *)".,w,b,u,t,i", (char_u *)0L}
852 #else
853 			    (char_u *)NULL, PV_NONE,
854 			    {(char_u *)0L, (char_u *)0L}
855 #endif
856 			    SCTX_INIT},
857     {"concealcursor","cocu", P_STRING|P_ALLOCED|P_RWIN|P_VI_DEF,
858 #ifdef FEAT_CONCEAL
859 			    (char_u *)VAR_WIN, PV_COCU,
860 			    {(char_u *)"", (char_u *)NULL}
861 #else
862 			    (char_u *)NULL, PV_NONE,
863 			    {(char_u *)NULL, (char_u *)0L}
864 #endif
865 			    SCTX_INIT},
866     {"conceallevel","cole", P_NUM|P_RWIN|P_VI_DEF,
867 #ifdef FEAT_CONCEAL
868 			    (char_u *)VAR_WIN, PV_COLE,
869 #else
870 			    (char_u *)NULL, PV_NONE,
871 #endif
872 			    {(char_u *)0L, (char_u *)0L}
873 			    SCTX_INIT},
874     {"completefunc", "cfu", P_STRING|P_ALLOCED|P_VI_DEF|P_SECURE,
875 #ifdef FEAT_COMPL_FUNC
876 			    (char_u *)&p_cfu, PV_CFU,
877 			    {(char_u *)"", (char_u *)0L}
878 #else
879 			    (char_u *)NULL, PV_NONE,
880 			    {(char_u *)0L, (char_u *)0L}
881 #endif
882 			    SCTX_INIT},
883     {"completeopt",   "cot",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
884 #ifdef FEAT_INS_EXPAND
885 			    (char_u *)&p_cot, PV_NONE,
886 			    {(char_u *)"menu,preview", (char_u *)0L}
887 #else
888 			    (char_u *)NULL, PV_NONE,
889 			    {(char_u *)0L, (char_u *)0L}
890 #endif
891 			    SCTX_INIT},
892     {"confirm",     "cf",   P_BOOL|P_VI_DEF,
893 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
894 			    (char_u *)&p_confirm, PV_NONE,
895 #else
896 			    (char_u *)NULL, PV_NONE,
897 #endif
898 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
899     {"conskey",	    "consk",P_BOOL|P_VI_DEF,
900 			    (char_u *)NULL, PV_NONE,
901 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
902     {"copyindent",  "ci",   P_BOOL|P_VI_DEF|P_VIM,
903 			    (char_u *)&p_ci, PV_CI,
904 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
905     {"cpoptions",   "cpo",  P_STRING|P_VIM|P_RALL|P_FLAGLIST,
906 			    (char_u *)&p_cpo, PV_NONE,
907 			    {(char_u *)CPO_VI, (char_u *)CPO_VIM}
908 			    SCTX_INIT},
909     {"cryptmethod", "cm",   P_STRING|P_ALLOCED|P_VI_DEF,
910 #ifdef FEAT_CRYPT
911 			    (char_u *)&p_cm, PV_CM,
912 			    {(char_u *)"blowfish2", (char_u *)0L}
913 #else
914 			    (char_u *)NULL, PV_NONE,
915 			    {(char_u *)0L, (char_u *)0L}
916 #endif
917 			    SCTX_INIT},
918     {"cscopepathcomp", "cspc", P_NUM|P_VI_DEF|P_VIM,
919 #ifdef FEAT_CSCOPE
920 			    (char_u *)&p_cspc, PV_NONE,
921 #else
922 			    (char_u *)NULL, PV_NONE,
923 #endif
924 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
925     {"cscopeprg",   "csprg", P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
926 #ifdef FEAT_CSCOPE
927 			    (char_u *)&p_csprg, PV_NONE,
928 			    {(char_u *)"cscope", (char_u *)0L}
929 #else
930 			    (char_u *)NULL, PV_NONE,
931 			    {(char_u *)0L, (char_u *)0L}
932 #endif
933 			    SCTX_INIT},
934     {"cscopequickfix", "csqf", P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
935 #if defined(FEAT_CSCOPE) && defined(FEAT_QUICKFIX)
936 			    (char_u *)&p_csqf, PV_NONE,
937 			    {(char_u *)"", (char_u *)0L}
938 #else
939 			    (char_u *)NULL, PV_NONE,
940 			    {(char_u *)0L, (char_u *)0L}
941 #endif
942 			    SCTX_INIT},
943     {"cscoperelative", "csre", P_BOOL|P_VI_DEF|P_VIM,
944 #ifdef FEAT_CSCOPE
945 			    (char_u *)&p_csre, PV_NONE,
946 #else
947 			    (char_u *)NULL, PV_NONE,
948 #endif
949 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
950     {"cscopetag",   "cst",  P_BOOL|P_VI_DEF|P_VIM,
951 #ifdef FEAT_CSCOPE
952 			    (char_u *)&p_cst, PV_NONE,
953 #else
954 			    (char_u *)NULL, PV_NONE,
955 #endif
956 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
957     {"cscopetagorder", "csto", P_NUM|P_VI_DEF|P_VIM,
958 #ifdef FEAT_CSCOPE
959 			    (char_u *)&p_csto, PV_NONE,
960 #else
961 			    (char_u *)NULL, PV_NONE,
962 #endif
963 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
964     {"cscopeverbose", "csverb", P_BOOL|P_VI_DEF|P_VIM,
965 #ifdef FEAT_CSCOPE
966 			    (char_u *)&p_csverbose, PV_NONE,
967 #else
968 			    (char_u *)NULL, PV_NONE,
969 #endif
970 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
971     {"cursorbind",  "crb",  P_BOOL|P_VI_DEF,
972 			    (char_u *)VAR_WIN, PV_CRBIND,
973 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
974     {"cursorcolumn", "cuc", P_BOOL|P_VI_DEF|P_RWINONLY,
975 #ifdef FEAT_SYN_HL
976 			    (char_u *)VAR_WIN, PV_CUC,
977 #else
978 			    (char_u *)NULL, PV_NONE,
979 #endif
980 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
981     {"cursorline",   "cul", P_BOOL|P_VI_DEF|P_RWINONLY,
982 #ifdef FEAT_SYN_HL
983 			    (char_u *)VAR_WIN, PV_CUL,
984 #else
985 			    (char_u *)NULL, PV_NONE,
986 #endif
987 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
988     {"debug",	    NULL,   P_STRING|P_VI_DEF,
989 			    (char_u *)&p_debug, PV_NONE,
990 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
991     {"define",	    "def",  P_STRING|P_ALLOCED|P_VI_DEF|P_CURSWANT,
992 #ifdef FEAT_FIND_ID
993 			    (char_u *)&p_def, PV_DEF,
994 			    {(char_u *)"^\\s*#\\s*define", (char_u *)0L}
995 #else
996 			    (char_u *)NULL, PV_NONE,
997 			    {(char_u *)NULL, (char_u *)0L}
998 #endif
999 			    SCTX_INIT},
1000     {"delcombine", "deco",  P_BOOL|P_VI_DEF|P_VIM,
1001 			    (char_u *)&p_deco, PV_NONE,
1002 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1003     {"dictionary",  "dict", P_STRING|P_EXPAND|P_VI_DEF|P_ONECOMMA|P_NODUP|P_NDNAME,
1004 #ifdef FEAT_INS_EXPAND
1005 			    (char_u *)&p_dict, PV_DICT,
1006 #else
1007 			    (char_u *)NULL, PV_NONE,
1008 #endif
1009 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
1010     {"diff",	    NULL,   P_BOOL|P_VI_DEF|P_RWIN|P_NOGLOB,
1011 #ifdef FEAT_DIFF
1012 			    (char_u *)VAR_WIN, PV_DIFF,
1013 #else
1014 			    (char_u *)NULL, PV_NONE,
1015 #endif
1016 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1017     {"diffexpr",    "dex",  P_STRING|P_VI_DEF|P_SECURE|P_CURSWANT,
1018 #if defined(FEAT_DIFF) && defined(FEAT_EVAL)
1019 			    (char_u *)&p_dex, PV_NONE,
1020 			    {(char_u *)"", (char_u *)0L}
1021 #else
1022 			    (char_u *)NULL, PV_NONE,
1023 			    {(char_u *)0L, (char_u *)0L}
1024 #endif
1025 			    SCTX_INIT},
1026     {"diffopt",	    "dip",  P_STRING|P_ALLOCED|P_VI_DEF|P_RWIN|P_ONECOMMA
1027 								     |P_NODUP,
1028 #ifdef FEAT_DIFF
1029 			    (char_u *)&p_dip, PV_NONE,
1030 			    {(char_u *)"internal,filler", (char_u *)NULL}
1031 #else
1032 			    (char_u *)NULL, PV_NONE,
1033 			    {(char_u *)"", (char_u *)NULL}
1034 #endif
1035 			    SCTX_INIT},
1036     {"digraph",	    "dg",   P_BOOL|P_VI_DEF|P_VIM,
1037 #ifdef FEAT_DIGRAPHS
1038 			    (char_u *)&p_dg, PV_NONE,
1039 #else
1040 			    (char_u *)NULL, PV_NONE,
1041 #endif
1042 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1043     {"directory",   "dir",  P_STRING|P_EXPAND|P_VI_DEF|P_ONECOMMA
1044 							    |P_NODUP|P_SECURE,
1045 			    (char_u *)&p_dir, PV_NONE,
1046 			    {(char_u *)DFLT_DIR, (char_u *)0L} SCTX_INIT},
1047     {"display",	    "dy",   P_STRING|P_VI_DEF|P_ONECOMMA|P_RALL|P_NODUP,
1048 			    (char_u *)&p_dy, PV_NONE,
1049 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
1050     {"eadirection", "ead",  P_STRING|P_VI_DEF,
1051 			    (char_u *)&p_ead, PV_NONE,
1052 			    {(char_u *)"both", (char_u *)0L}
1053 			    SCTX_INIT},
1054     {"edcompatible","ed",   P_BOOL|P_VI_DEF,
1055 			    (char_u *)&p_ed, PV_NONE,
1056 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1057     {"emoji",  "emo",	    P_BOOL|P_VI_DEF|P_RCLR,
1058 			    (char_u *)&p_emoji, PV_NONE,
1059 			    {(char_u *)TRUE, (char_u *)0L}
1060 			    SCTX_INIT},
1061     {"encoding",    "enc",  P_STRING|P_VI_DEF|P_RCLR|P_NO_ML,
1062 			    (char_u *)&p_enc, PV_NONE,
1063 			    {(char_u *)ENC_DFLT, (char_u *)0L}
1064 			    SCTX_INIT},
1065     {"endofline",   "eol",  P_BOOL|P_NO_MKRC|P_VI_DEF|P_RSTAT,
1066 			    (char_u *)&p_eol, PV_EOL,
1067 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1068     {"equalalways", "ea",   P_BOOL|P_VI_DEF|P_RALL,
1069 			    (char_u *)&p_ea, PV_NONE,
1070 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1071     {"equalprg",    "ep",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1072 			    (char_u *)&p_ep, PV_EP,
1073 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
1074     {"errorbells",  "eb",   P_BOOL|P_VI_DEF,
1075 			    (char_u *)&p_eb, PV_NONE,
1076 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1077     {"errorfile",   "ef",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1078 #ifdef FEAT_QUICKFIX
1079 			    (char_u *)&p_ef, PV_NONE,
1080 			    {(char_u *)DFLT_ERRORFILE, (char_u *)0L}
1081 #else
1082 			    (char_u *)NULL, PV_NONE,
1083 			    {(char_u *)NULL, (char_u *)0L}
1084 #endif
1085 			    SCTX_INIT},
1086     {"errorformat", "efm",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
1087 #ifdef FEAT_QUICKFIX
1088 			    (char_u *)&p_efm, PV_EFM,
1089 			    {(char_u *)DFLT_EFM, (char_u *)0L}
1090 #else
1091 			    (char_u *)NULL, PV_NONE,
1092 			    {(char_u *)NULL, (char_u *)0L}
1093 #endif
1094 			    SCTX_INIT},
1095     {"esckeys",	    "ek",   P_BOOL|P_VIM,
1096 			    (char_u *)&p_ek, PV_NONE,
1097 			    {(char_u *)FALSE, (char_u *)TRUE} SCTX_INIT},
1098     {"eventignore", "ei",   P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
1099 			    (char_u *)&p_ei, PV_NONE,
1100 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
1101     {"expandtab",   "et",   P_BOOL|P_VI_DEF|P_VIM,
1102 			    (char_u *)&p_et, PV_ET,
1103 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1104     {"exrc",	    "ex",   P_BOOL|P_VI_DEF|P_SECURE,
1105 			    (char_u *)&p_exrc, PV_NONE,
1106 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1107     {"fileencoding","fenc", P_STRING|P_ALLOCED|P_VI_DEF|P_RSTAT|P_RBUF
1108 								   |P_NO_MKRC,
1109 			    (char_u *)&p_fenc, PV_FENC,
1110 			    {(char_u *)"", (char_u *)0L}
1111 			    SCTX_INIT},
1112     {"fileencodings","fencs", P_STRING|P_VI_DEF|P_ONECOMMA,
1113 			    (char_u *)&p_fencs, PV_NONE,
1114 			    {(char_u *)"ucs-bom", (char_u *)0L}
1115 			    SCTX_INIT},
1116     {"fileformat",  "ff",   P_STRING|P_ALLOCED|P_VI_DEF|P_RSTAT|P_NO_MKRC
1117 								  |P_CURSWANT,
1118 			    (char_u *)&p_ff, PV_FF,
1119 			    {(char_u *)DFLT_FF, (char_u *)0L} SCTX_INIT},
1120     {"fileformats", "ffs",  P_STRING|P_VIM|P_ONECOMMA|P_NODUP,
1121 			    (char_u *)&p_ffs, PV_NONE,
1122 			    {(char_u *)DFLT_FFS_VI, (char_u *)DFLT_FFS_VIM}
1123 			    SCTX_INIT},
1124     {"fileignorecase", "fic", P_BOOL|P_VI_DEF,
1125 			    (char_u *)&p_fic, PV_NONE,
1126 			    {
1127 #ifdef CASE_INSENSITIVE_FILENAME
1128 				    (char_u *)TRUE,
1129 #else
1130 				    (char_u *)FALSE,
1131 #endif
1132 					(char_u *)0L} SCTX_INIT},
1133     {"filetype",    "ft",   P_STRING|P_ALLOCED|P_VI_DEF|P_NOGLOB|P_NFNAME,
1134 			    (char_u *)&p_ft, PV_FT,
1135 			    {(char_u *)"", (char_u *)0L}
1136 			    SCTX_INIT},
1137     {"fillchars",   "fcs",  P_STRING|P_VI_DEF|P_RALL|P_ONECOMMA|P_NODUP,
1138 			    (char_u *)&p_fcs, PV_NONE,
1139 			    {(char_u *)"vert:|,fold:-", (char_u *)0L}
1140 			    SCTX_INIT},
1141     {"fixendofline",  "fixeol", P_BOOL|P_VI_DEF|P_RSTAT,
1142 			    (char_u *)&p_fixeol, PV_FIXEOL,
1143 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1144     {"fkmap",	    "fk",   P_BOOL|P_VI_DEF,
1145 #ifdef FEAT_FKMAP
1146 			    (char_u *)&p_fkmap, PV_NONE,
1147 #else
1148 			    (char_u *)NULL, PV_NONE,
1149 #endif
1150 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1151     {"flash",	    "fl",   P_BOOL|P_VI_DEF,
1152 			    (char_u *)NULL, PV_NONE,
1153 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1154     {"foldclose",   "fcl",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP|P_RWIN,
1155 #ifdef FEAT_FOLDING
1156 			    (char_u *)&p_fcl, PV_NONE,
1157 			    {(char_u *)"", (char_u *)0L}
1158 #else
1159 			    (char_u *)NULL, PV_NONE,
1160 			    {(char_u *)NULL, (char_u *)0L}
1161 #endif
1162 			    SCTX_INIT},
1163     {"foldcolumn",  "fdc",  P_NUM|P_VI_DEF|P_RWIN,
1164 #ifdef FEAT_FOLDING
1165 			    (char_u *)VAR_WIN, PV_FDC,
1166 			    {(char_u *)FALSE, (char_u *)0L}
1167 #else
1168 			    (char_u *)NULL, PV_NONE,
1169 			    {(char_u *)NULL, (char_u *)0L}
1170 #endif
1171 			    SCTX_INIT},
1172     {"foldenable",  "fen",  P_BOOL|P_VI_DEF|P_RWIN,
1173 #ifdef FEAT_FOLDING
1174 			    (char_u *)VAR_WIN, PV_FEN,
1175 			    {(char_u *)TRUE, (char_u *)0L}
1176 #else
1177 			    (char_u *)NULL, PV_NONE,
1178 			    {(char_u *)NULL, (char_u *)0L}
1179 #endif
1180 			    SCTX_INIT},
1181     {"foldexpr",    "fde",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|P_RWIN,
1182 #if defined(FEAT_FOLDING) && defined(FEAT_EVAL)
1183 			    (char_u *)VAR_WIN, PV_FDE,
1184 			    {(char_u *)"0", (char_u *)NULL}
1185 #else
1186 			    (char_u *)NULL, PV_NONE,
1187 			    {(char_u *)NULL, (char_u *)0L}
1188 #endif
1189 			    SCTX_INIT},
1190     {"foldignore",  "fdi",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|P_RWIN,
1191 #ifdef FEAT_FOLDING
1192 			    (char_u *)VAR_WIN, PV_FDI,
1193 			    {(char_u *)"#", (char_u *)NULL}
1194 #else
1195 			    (char_u *)NULL, PV_NONE,
1196 			    {(char_u *)NULL, (char_u *)0L}
1197 #endif
1198 			    SCTX_INIT},
1199     {"foldlevel",   "fdl",  P_NUM|P_VI_DEF|P_RWIN,
1200 #ifdef FEAT_FOLDING
1201 			    (char_u *)VAR_WIN, PV_FDL,
1202 			    {(char_u *)0L, (char_u *)0L}
1203 #else
1204 			    (char_u *)NULL, PV_NONE,
1205 			    {(char_u *)NULL, (char_u *)0L}
1206 #endif
1207 			    SCTX_INIT},
1208     {"foldlevelstart","fdls", P_NUM|P_VI_DEF|P_CURSWANT,
1209 #ifdef FEAT_FOLDING
1210 			    (char_u *)&p_fdls, PV_NONE,
1211 			    {(char_u *)-1L, (char_u *)0L}
1212 #else
1213 			    (char_u *)NULL, PV_NONE,
1214 			    {(char_u *)NULL, (char_u *)0L}
1215 #endif
1216 			    SCTX_INIT},
1217     {"foldmarker",  "fmr",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|
1218 						    P_RWIN|P_ONECOMMA|P_NODUP,
1219 #ifdef FEAT_FOLDING
1220 			    (char_u *)VAR_WIN, PV_FMR,
1221 			    {(char_u *)"{{{,}}}", (char_u *)NULL}
1222 #else
1223 			    (char_u *)NULL, PV_NONE,
1224 			    {(char_u *)NULL, (char_u *)0L}
1225 #endif
1226 			    SCTX_INIT},
1227     {"foldmethod",  "fdm",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|P_RWIN,
1228 #ifdef FEAT_FOLDING
1229 			    (char_u *)VAR_WIN, PV_FDM,
1230 			    {(char_u *)"manual", (char_u *)NULL}
1231 #else
1232 			    (char_u *)NULL, PV_NONE,
1233 			    {(char_u *)NULL, (char_u *)0L}
1234 #endif
1235 			    SCTX_INIT},
1236     {"foldminlines","fml",  P_NUM|P_VI_DEF|P_RWIN,
1237 #ifdef FEAT_FOLDING
1238 			    (char_u *)VAR_WIN, PV_FML,
1239 			    {(char_u *)1L, (char_u *)0L}
1240 #else
1241 			    (char_u *)NULL, PV_NONE,
1242 			    {(char_u *)NULL, (char_u *)0L}
1243 #endif
1244 			    SCTX_INIT},
1245     {"foldnestmax", "fdn",  P_NUM|P_VI_DEF|P_RWIN,
1246 #ifdef FEAT_FOLDING
1247 			    (char_u *)VAR_WIN, PV_FDN,
1248 			    {(char_u *)20L, (char_u *)0L}
1249 #else
1250 			    (char_u *)NULL, PV_NONE,
1251 			    {(char_u *)NULL, (char_u *)0L}
1252 #endif
1253 			    SCTX_INIT},
1254     {"foldopen",    "fdo",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP|P_CURSWANT,
1255 #ifdef FEAT_FOLDING
1256 			    (char_u *)&p_fdo, PV_NONE,
1257 		 {(char_u *)"block,hor,mark,percent,quickfix,search,tag,undo",
1258 						 (char_u *)0L}
1259 #else
1260 			    (char_u *)NULL, PV_NONE,
1261 			    {(char_u *)NULL, (char_u *)0L}
1262 #endif
1263 			    SCTX_INIT},
1264     {"foldtext",    "fdt",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|P_RWIN,
1265 #if defined(FEAT_FOLDING) && defined(FEAT_EVAL)
1266 			    (char_u *)VAR_WIN, PV_FDT,
1267 			    {(char_u *)"foldtext()", (char_u *)NULL}
1268 #else
1269 			    (char_u *)NULL, PV_NONE,
1270 			    {(char_u *)NULL, (char_u *)0L}
1271 #endif
1272 			    SCTX_INIT},
1273     {"formatexpr", "fex",   P_STRING|P_ALLOCED|P_VI_DEF|P_VIM,
1274 #ifdef FEAT_EVAL
1275 			    (char_u *)&p_fex, PV_FEX,
1276 			    {(char_u *)"", (char_u *)0L}
1277 #else
1278 			    (char_u *)NULL, PV_NONE,
1279 			    {(char_u *)0L, (char_u *)0L}
1280 #endif
1281 			    SCTX_INIT},
1282     {"formatoptions","fo",  P_STRING|P_ALLOCED|P_VIM|P_FLAGLIST,
1283 			    (char_u *)&p_fo, PV_FO,
1284 			    {(char_u *)DFLT_FO_VI, (char_u *)DFLT_FO_VIM}
1285 			    SCTX_INIT},
1286     {"formatlistpat","flp", P_STRING|P_ALLOCED|P_VI_DEF,
1287 			    (char_u *)&p_flp, PV_FLP,
1288 			    {(char_u *)"^\\s*\\d\\+[\\]:.)}\\t ]\\s*",
1289 						 (char_u *)0L} SCTX_INIT},
1290     {"formatprg",   "fp",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1291 			    (char_u *)&p_fp, PV_FP,
1292 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
1293     {"fsync",       "fs",   P_BOOL|P_SECURE|P_VI_DEF,
1294 #ifdef HAVE_FSYNC
1295 			    (char_u *)&p_fs, PV_NONE,
1296 			    {(char_u *)TRUE, (char_u *)0L}
1297 #else
1298 			    (char_u *)NULL, PV_NONE,
1299 			    {(char_u *)FALSE, (char_u *)0L}
1300 #endif
1301 			    SCTX_INIT},
1302     {"gdefault",    "gd",   P_BOOL|P_VI_DEF|P_VIM,
1303 			    (char_u *)&p_gd, PV_NONE,
1304 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1305     {"graphic",	    "gr",   P_BOOL|P_VI_DEF,
1306 			    (char_u *)NULL, PV_NONE,
1307 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1308     {"grepformat",  "gfm",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
1309 #ifdef FEAT_QUICKFIX
1310 			    (char_u *)&p_gefm, PV_NONE,
1311 			    {(char_u *)DFLT_GREPFORMAT, (char_u *)0L}
1312 #else
1313 			    (char_u *)NULL, PV_NONE,
1314 			    {(char_u *)NULL, (char_u *)0L}
1315 #endif
1316 			    SCTX_INIT},
1317     {"grepprg",	    "gp",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1318 #ifdef FEAT_QUICKFIX
1319 			    (char_u *)&p_gp, PV_GP,
1320 			    {
1321 # ifdef WIN3264
1322 			    /* may be changed to "grep -n" in os_win32.c */
1323 			    (char_u *)"findstr /n",
1324 # else
1325 #  ifdef UNIX
1326 			    /* Add an extra file name so that grep will always
1327 			     * insert a file name in the match line. */
1328 			    (char_u *)"grep -n $* /dev/null",
1329 #  else
1330 #   ifdef VMS
1331 			    (char_u *)"SEARCH/NUMBERS ",
1332 #   else
1333 			    (char_u *)"grep -n ",
1334 #   endif
1335 #  endif
1336 # endif
1337 			    (char_u *)0L}
1338 #else
1339 			    (char_u *)NULL, PV_NONE,
1340 			    {(char_u *)NULL, (char_u *)0L}
1341 #endif
1342 			    SCTX_INIT},
1343     {"guicursor",    "gcr", P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
1344 #ifdef CURSOR_SHAPE
1345 			    (char_u *)&p_guicursor, PV_NONE,
1346 			    {
1347 # ifdef FEAT_GUI
1348 				(char_u *)"n-v-c:block-Cursor/lCursor,ve:ver35-Cursor,o:hor50-Cursor,i-ci:ver25-Cursor/lCursor,r-cr:hor20-Cursor/lCursor,sm:block-Cursor-blinkwait175-blinkoff150-blinkon175",
1349 # else	/* Win32 console */
1350 				(char_u *)"n-v-c:block,o:hor50,i-ci:hor15,r-cr:hor30,sm:block",
1351 # endif
1352 				    (char_u *)0L}
1353 #else
1354 			    (char_u *)NULL, PV_NONE,
1355 			    {(char_u *)NULL, (char_u *)0L}
1356 #endif
1357 			    SCTX_INIT},
1358     {"guifont",	    "gfn",  P_STRING|P_VI_DEF|P_RCLR|P_ONECOMMA|P_NODUP,
1359 #ifdef FEAT_GUI
1360 			    (char_u *)&p_guifont, PV_NONE,
1361 			    {(char_u *)"", (char_u *)0L}
1362 #else
1363 			    (char_u *)NULL, PV_NONE,
1364 			    {(char_u *)NULL, (char_u *)0L}
1365 #endif
1366 			    SCTX_INIT},
1367     {"guifontset",  "gfs",  P_STRING|P_VI_DEF|P_RCLR|P_ONECOMMA,
1368 #if defined(FEAT_GUI) && defined(FEAT_XFONTSET)
1369 			    (char_u *)&p_guifontset, PV_NONE,
1370 			    {(char_u *)"", (char_u *)0L}
1371 #else
1372 			    (char_u *)NULL, PV_NONE,
1373 			    {(char_u *)NULL, (char_u *)0L}
1374 #endif
1375 			    SCTX_INIT},
1376     {"guifontwide", "gfw",  P_STRING|P_VI_DEF|P_RCLR|P_ONECOMMA|P_NODUP,
1377 #if defined(FEAT_GUI)
1378 			    (char_u *)&p_guifontwide, PV_NONE,
1379 			    {(char_u *)"", (char_u *)0L}
1380 #else
1381 			    (char_u *)NULL, PV_NONE,
1382 			    {(char_u *)NULL, (char_u *)0L}
1383 #endif
1384 			    SCTX_INIT},
1385     {"guiheadroom", "ghr",  P_NUM|P_VI_DEF,
1386 #if defined(FEAT_GUI_GTK) || defined(FEAT_GUI_X11)
1387 			    (char_u *)&p_ghr, PV_NONE,
1388 #else
1389 			    (char_u *)NULL, PV_NONE,
1390 #endif
1391 			    {(char_u *)50L, (char_u *)0L} SCTX_INIT},
1392     {"guioptions",  "go",   P_STRING|P_VI_DEF|P_RALL|P_FLAGLIST,
1393 #if defined(FEAT_GUI)
1394 			    (char_u *)&p_go, PV_NONE,
1395 # if defined(UNIX) && !defined(FEAT_GUI_MAC)
1396 			    {(char_u *)"aegimrLtT", (char_u *)0L}
1397 # else
1398 			    {(char_u *)"egmrLtT", (char_u *)0L}
1399 # endif
1400 #else
1401 			    (char_u *)NULL, PV_NONE,
1402 			    {(char_u *)NULL, (char_u *)0L}
1403 #endif
1404 			    SCTX_INIT},
1405     {"guipty",	    NULL,   P_BOOL|P_VI_DEF,
1406 #if defined(FEAT_GUI)
1407 			    (char_u *)&p_guipty, PV_NONE,
1408 #else
1409 			    (char_u *)NULL, PV_NONE,
1410 #endif
1411 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1412     {"guitablabel",  "gtl", P_STRING|P_VI_DEF|P_RWIN,
1413 #if defined(FEAT_GUI_TABLINE)
1414 			    (char_u *)&p_gtl, PV_NONE,
1415 			    {(char_u *)"", (char_u *)0L}
1416 #else
1417 			    (char_u *)NULL, PV_NONE,
1418 			    {(char_u *)NULL, (char_u *)0L}
1419 #endif
1420 			    SCTX_INIT},
1421     {"guitabtooltip",  "gtt", P_STRING|P_VI_DEF|P_RWIN,
1422 #if defined(FEAT_GUI_TABLINE)
1423 			    (char_u *)&p_gtt, PV_NONE,
1424 			    {(char_u *)"", (char_u *)0L}
1425 #else
1426 			    (char_u *)NULL, PV_NONE,
1427 			    {(char_u *)NULL, (char_u *)0L}
1428 #endif
1429 			    SCTX_INIT},
1430     {"hardtabs",    "ht",   P_NUM|P_VI_DEF,
1431 			    (char_u *)NULL, PV_NONE,
1432 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
1433     {"helpfile",    "hf",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1434 			    (char_u *)&p_hf, PV_NONE,
1435 			    {(char_u *)DFLT_HELPFILE, (char_u *)0L}
1436 			    SCTX_INIT},
1437     {"helpheight",  "hh",   P_NUM|P_VI_DEF,
1438 			    (char_u *)&p_hh, PV_NONE,
1439 			    {(char_u *)20L, (char_u *)0L} SCTX_INIT},
1440     {"helplang",    "hlg",  P_STRING|P_VI_DEF|P_ONECOMMA,
1441 #ifdef FEAT_MULTI_LANG
1442 			    (char_u *)&p_hlg, PV_NONE,
1443 			    {(char_u *)"", (char_u *)0L}
1444 #else
1445 			    (char_u *)NULL, PV_NONE,
1446 			    {(char_u *)0L, (char_u *)0L}
1447 #endif
1448 			    SCTX_INIT},
1449     {"hidden",	    "hid",  P_BOOL|P_VI_DEF,
1450 			    (char_u *)&p_hid, PV_NONE,
1451 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1452     {"highlight",   "hl",   P_STRING|P_VI_DEF|P_RCLR|P_ONECOMMA|P_NODUP,
1453 			    (char_u *)&p_hl, PV_NONE,
1454 			    {(char_u *)HIGHLIGHT_INIT, (char_u *)0L}
1455 			    SCTX_INIT},
1456     {"history",	    "hi",   P_NUM|P_VIM,
1457 			    (char_u *)&p_hi, PV_NONE,
1458 			    {(char_u *)0L, (char_u *)50L} SCTX_INIT},
1459     {"hkmap",	    "hk",   P_BOOL|P_VI_DEF|P_VIM,
1460 #ifdef FEAT_RIGHTLEFT
1461 			    (char_u *)&p_hkmap, PV_NONE,
1462 #else
1463 			    (char_u *)NULL, PV_NONE,
1464 #endif
1465 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1466     {"hkmapp",	    "hkp",  P_BOOL|P_VI_DEF|P_VIM,
1467 #ifdef FEAT_RIGHTLEFT
1468 			    (char_u *)&p_hkmapp, PV_NONE,
1469 #else
1470 			    (char_u *)NULL, PV_NONE,
1471 #endif
1472 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1473     {"hlsearch",    "hls",  P_BOOL|P_VI_DEF|P_VIM|P_RALL,
1474 			    (char_u *)&p_hls, PV_NONE,
1475 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1476     {"icon",	    NULL,   P_BOOL|P_VI_DEF,
1477 #ifdef FEAT_TITLE
1478 			    (char_u *)&p_icon, PV_NONE,
1479 #else
1480 			    (char_u *)NULL, PV_NONE,
1481 #endif
1482 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1483     {"iconstring",  NULL,   P_STRING|P_VI_DEF,
1484 #ifdef FEAT_TITLE
1485 			    (char_u *)&p_iconstring, PV_NONE,
1486 #else
1487 			    (char_u *)NULL, PV_NONE,
1488 #endif
1489 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
1490     {"ignorecase",  "ic",   P_BOOL|P_VI_DEF,
1491 			    (char_u *)&p_ic, PV_NONE,
1492 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1493     {"imactivatefunc","imaf",P_STRING|P_VI_DEF|P_SECURE,
1494 #if defined(FEAT_EVAL)
1495 			    (char_u *)&p_imaf, PV_NONE,
1496 			    {(char_u *)"", (char_u *)NULL}
1497 # else
1498 			    (char_u *)NULL, PV_NONE,
1499 			    {(char_u *)NULL, (char_u *)0L}
1500 # endif
1501 			    SCTX_INIT},
1502     {"imactivatekey","imak",P_STRING|P_VI_DEF,
1503 #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
1504 			    (char_u *)&p_imak, PV_NONE,
1505 #else
1506 			    (char_u *)NULL, PV_NONE,
1507 #endif
1508 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
1509     {"imcmdline",   "imc",  P_BOOL|P_VI_DEF,
1510 			    (char_u *)&p_imcmdline, PV_NONE,
1511 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1512     {"imdisable",   "imd",  P_BOOL|P_VI_DEF,
1513 			    (char_u *)&p_imdisable, PV_NONE,
1514 #ifdef __sgi
1515 			    {(char_u *)TRUE, (char_u *)0L}
1516 #else
1517 			    {(char_u *)FALSE, (char_u *)0L}
1518 #endif
1519 			    SCTX_INIT},
1520     {"iminsert",    "imi",  P_NUM|P_VI_DEF,
1521 			    (char_u *)&p_iminsert, PV_IMI,
1522 			    {(char_u *)B_IMODE_NONE, (char_u *)0L}
1523 			    SCTX_INIT},
1524     {"imsearch",    "ims",  P_NUM|P_VI_DEF,
1525 			    (char_u *)&p_imsearch, PV_IMS,
1526 			    {(char_u *)B_IMODE_USE_INSERT, (char_u *)0L}
1527 			    SCTX_INIT},
1528     {"imstatusfunc","imsf",P_STRING|P_VI_DEF|P_SECURE,
1529 #if defined(FEAT_EVAL)
1530 			    (char_u *)&p_imsf, PV_NONE,
1531 			    {(char_u *)"", (char_u *)NULL}
1532 #else
1533 			    (char_u *)NULL, PV_NONE,
1534 			    {(char_u *)NULL, (char_u *)0L}
1535 #endif
1536 			    SCTX_INIT},
1537     {"imstyle",	    "imst", P_NUM|P_VI_DEF|P_SECURE,
1538 #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
1539 			    (char_u *)&p_imst, PV_NONE,
1540 			    {(char_u *)IM_OVER_THE_SPOT, (char_u *)0L}
1541 #else
1542 			    (char_u *)NULL, PV_NONE,
1543 			    {(char_u *)0L, (char_u *)0L}
1544 #endif
1545 			    SCTX_INIT},
1546     {"include",	    "inc",  P_STRING|P_ALLOCED|P_VI_DEF,
1547 #ifdef FEAT_FIND_ID
1548 			    (char_u *)&p_inc, PV_INC,
1549 			    {(char_u *)"^\\s*#\\s*include", (char_u *)0L}
1550 #else
1551 			    (char_u *)NULL, PV_NONE,
1552 			    {(char_u *)0L, (char_u *)0L}
1553 #endif
1554 			    SCTX_INIT},
1555     {"includeexpr", "inex", P_STRING|P_ALLOCED|P_VI_DEF,
1556 #if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
1557 			    (char_u *)&p_inex, PV_INEX,
1558 			    {(char_u *)"", (char_u *)0L}
1559 #else
1560 			    (char_u *)NULL, PV_NONE,
1561 			    {(char_u *)0L, (char_u *)0L}
1562 #endif
1563 			    SCTX_INIT},
1564     {"incsearch",   "is",   P_BOOL|P_VI_DEF|P_VIM,
1565 			    (char_u *)&p_is, PV_NONE,
1566 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1567     {"indentexpr", "inde",  P_STRING|P_ALLOCED|P_VI_DEF|P_VIM,
1568 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
1569 			    (char_u *)&p_inde, PV_INDE,
1570 			    {(char_u *)"", (char_u *)0L}
1571 #else
1572 			    (char_u *)NULL, PV_NONE,
1573 			    {(char_u *)0L, (char_u *)0L}
1574 #endif
1575 			    SCTX_INIT},
1576     {"indentkeys", "indk",  P_STRING|P_ALLOCED|P_VI_DEF|P_ONECOMMA|P_NODUP,
1577 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
1578 			    (char_u *)&p_indk, PV_INDK,
1579 			    {INDENTKEYS_DEFAULT, (char_u *)0L}
1580 #else
1581 			    (char_u *)NULL, PV_NONE,
1582 			    {(char_u *)0L, (char_u *)0L}
1583 #endif
1584 			    SCTX_INIT},
1585     {"infercase",   "inf",  P_BOOL|P_VI_DEF,
1586 			    (char_u *)&p_inf, PV_INF,
1587 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1588     {"insertmode",  "im",   P_BOOL|P_VI_DEF|P_VIM,
1589 			    (char_u *)&p_im, PV_NONE,
1590 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1591     {"isfname",	    "isf",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1592 			    (char_u *)&p_isf, PV_NONE,
1593 			    {
1594 #ifdef BACKSLASH_IN_FILENAME
1595 				/* Excluded are: & and ^ are special in cmd.exe
1596 				 * ( and ) are used in text separating fnames */
1597 			    (char_u *)"@,48-57,/,\\,.,-,_,+,,,#,$,%,{,},[,],:,@-@,!,~,=",
1598 #else
1599 # ifdef AMIGA
1600 			    (char_u *)"@,48-57,/,.,-,_,+,,,$,:",
1601 # else
1602 #  ifdef VMS
1603 			    (char_u *)"@,48-57,/,.,-,_,+,,,#,$,%,<,>,[,],:,;,~",
1604 #  else /* UNIX et al. */
1605 #   ifdef EBCDIC
1606 			    (char_u *)"@,240-249,/,.,-,_,+,,,#,$,%,~,=",
1607 #   else
1608 			    (char_u *)"@,48-57,/,.,-,_,+,,,#,$,%,~,=",
1609 #   endif
1610 #  endif
1611 # endif
1612 #endif
1613 				(char_u *)0L} SCTX_INIT},
1614     {"isident",	    "isi",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1615 			    (char_u *)&p_isi, PV_NONE,
1616 			    {
1617 #if defined(MSWIN)
1618 			    (char_u *)"@,48-57,_,128-167,224-235",
1619 #else
1620 # ifdef EBCDIC
1621 			    /* TODO: EBCDIC Check this! @ == isalpha()*/
1622 			    (char_u *)"@,240-249,_,66-73,81-89,98-105,"
1623 				    "112-120,128,140-142,156,158,172,"
1624 				    "174,186,191,203-207,219-225,235-239,"
1625 				    "251-254",
1626 # else
1627 			    (char_u *)"@,48-57,_,192-255",
1628 # endif
1629 #endif
1630 				(char_u *)0L} SCTX_INIT},
1631     {"iskeyword",   "isk",  P_STRING|P_ALLOCED|P_VIM|P_COMMA|P_NODUP,
1632 			    (char_u *)&p_isk, PV_ISK,
1633 			    {
1634 #ifdef EBCDIC
1635 			     (char_u *)"@,240-249,_",
1636 			     /* TODO: EBCDIC Check this! @ == isalpha()*/
1637 			     (char_u *)"@,240-249,_,66-73,81-89,98-105,"
1638 				    "112-120,128,140-142,156,158,172,"
1639 				    "174,186,191,203-207,219-225,235-239,"
1640 				    "251-254",
1641 #else
1642 				(char_u *)"@,48-57,_",
1643 # if defined(MSWIN)
1644 				(char_u *)"@,48-57,_,128-167,224-235"
1645 # else
1646 				ISK_LATIN1
1647 # endif
1648 #endif
1649 			    } SCTX_INIT},
1650     {"isprint",	    "isp",  P_STRING|P_VI_DEF|P_RALL|P_COMMA|P_NODUP,
1651 			    (char_u *)&p_isp, PV_NONE,
1652 			    {
1653 #if defined(MSWIN) || defined(VMS)
1654 			    (char_u *)"@,~-255",
1655 #else
1656 # ifdef EBCDIC
1657 			    /* all chars above 63 are printable */
1658 			    (char_u *)"63-255",
1659 # else
1660 			    ISP_LATIN1,
1661 # endif
1662 #endif
1663 				(char_u *)0L} SCTX_INIT},
1664     {"joinspaces",  "js",   P_BOOL|P_VI_DEF|P_VIM,
1665 			    (char_u *)&p_js, PV_NONE,
1666 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1667     {"key",	    NULL,   P_STRING|P_ALLOCED|P_VI_DEF|P_NO_MKRC,
1668 #ifdef FEAT_CRYPT
1669 			    (char_u *)&p_key, PV_KEY,
1670 			    {(char_u *)"", (char_u *)0L}
1671 #else
1672 			    (char_u *)NULL, PV_NONE,
1673 			    {(char_u *)0L, (char_u *)0L}
1674 #endif
1675 			    SCTX_INIT},
1676     {"keymap",	    "kmp",  P_STRING|P_ALLOCED|P_VI_DEF|P_RBUF|P_RSTAT|P_NFNAME|P_PRI_MKRC,
1677 #ifdef FEAT_KEYMAP
1678 			    (char_u *)&p_keymap, PV_KMAP,
1679 			    {(char_u *)"", (char_u *)0L}
1680 #else
1681 			    (char_u *)NULL, PV_NONE,
1682 			    {(char_u *)"", (char_u *)0L}
1683 #endif
1684 			    SCTX_INIT},
1685     {"keymodel",    "km",   P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
1686 			    (char_u *)&p_km, PV_NONE,
1687 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
1688     {"keywordprg",  "kp",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1689 			    (char_u *)&p_kp, PV_KP,
1690 			    {
1691 #ifdef MSWIN
1692 			    (char_u *)":help",
1693 #else
1694 # ifdef VMS
1695 			    (char_u *)"help",
1696 # else
1697 #  ifdef USEMAN_S
1698 			    (char_u *)"man -s",
1699 #  else
1700 			    (char_u *)"man",
1701 #  endif
1702 # endif
1703 #endif
1704 				(char_u *)0L} SCTX_INIT},
1705     {"langmap",     "lmap", P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP|P_SECURE,
1706 #ifdef FEAT_LANGMAP
1707 			    (char_u *)&p_langmap, PV_NONE,
1708 			    {(char_u *)"", (char_u *)0L}
1709 #else
1710 			    (char_u *)NULL, PV_NONE,
1711 			    {(char_u *)NULL, (char_u *)0L}
1712 #endif
1713 			    SCTX_INIT},
1714     {"langmenu",    "lm",   P_STRING|P_VI_DEF|P_NFNAME,
1715 #if defined(FEAT_MENU) && defined(FEAT_MULTI_LANG)
1716 			    (char_u *)&p_lm, PV_NONE,
1717 #else
1718 			    (char_u *)NULL, PV_NONE,
1719 #endif
1720 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
1721     {"langnoremap",  "lnr",   P_BOOL|P_VI_DEF,
1722 #ifdef FEAT_LANGMAP
1723 			    (char_u *)&p_lnr, PV_NONE,
1724 #else
1725 			    (char_u *)NULL, PV_NONE,
1726 #endif
1727 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1728     {"langremap",  "lrm",   P_BOOL|P_VI_DEF,
1729 #ifdef FEAT_LANGMAP
1730 			    (char_u *)&p_lrm, PV_NONE,
1731 #else
1732 			    (char_u *)NULL, PV_NONE,
1733 #endif
1734 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1735     {"laststatus",  "ls",   P_NUM|P_VI_DEF|P_RALL,
1736 			    (char_u *)&p_ls, PV_NONE,
1737 			    {(char_u *)1L, (char_u *)0L} SCTX_INIT},
1738     {"lazyredraw",  "lz",   P_BOOL|P_VI_DEF,
1739 			    (char_u *)&p_lz, PV_NONE,
1740 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1741     {"linebreak",   "lbr",  P_BOOL|P_VI_DEF|P_RWIN,
1742 #ifdef FEAT_LINEBREAK
1743 			    (char_u *)VAR_WIN, PV_LBR,
1744 #else
1745 			    (char_u *)NULL, PV_NONE,
1746 #endif
1747 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1748     {"lines",	    NULL,   P_NUM|P_NODEFAULT|P_NO_MKRC|P_VI_DEF|P_RCLR,
1749 			    (char_u *)&Rows, PV_NONE,
1750 			    {
1751 #if defined(WIN3264)
1752 			    (char_u *)25L,
1753 #else
1754 			    (char_u *)24L,
1755 #endif
1756 					    (char_u *)0L} SCTX_INIT},
1757     {"linespace",   "lsp",  P_NUM|P_VI_DEF|P_RCLR,
1758 #ifdef FEAT_GUI
1759 			    (char_u *)&p_linespace, PV_NONE,
1760 #else
1761 			    (char_u *)NULL, PV_NONE,
1762 #endif
1763 #ifdef FEAT_GUI_W32
1764 			    {(char_u *)1L, (char_u *)0L}
1765 #else
1766 			    {(char_u *)0L, (char_u *)0L}
1767 #endif
1768 			    SCTX_INIT},
1769     {"lisp",	    NULL,   P_BOOL|P_VI_DEF,
1770 #ifdef FEAT_LISP
1771 			    (char_u *)&p_lisp, PV_LISP,
1772 #else
1773 			    (char_u *)NULL, PV_NONE,
1774 #endif
1775 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1776     {"lispwords",   "lw",   P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
1777 #ifdef FEAT_LISP
1778 			    (char_u *)&p_lispwords, PV_LW,
1779 			    {(char_u *)LISPWORD_VALUE, (char_u *)0L}
1780 #else
1781 			    (char_u *)NULL, PV_NONE,
1782 			    {(char_u *)"", (char_u *)0L}
1783 #endif
1784 			    SCTX_INIT},
1785     {"list",	    NULL,   P_BOOL|P_VI_DEF|P_RWIN,
1786 			    (char_u *)VAR_WIN, PV_LIST,
1787 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1788     {"listchars",   "lcs",  P_STRING|P_VI_DEF|P_RALL|P_ONECOMMA|P_NODUP,
1789 			    (char_u *)&p_lcs, PV_NONE,
1790 			    {(char_u *)"eol:$", (char_u *)0L} SCTX_INIT},
1791     {"loadplugins", "lpl",  P_BOOL|P_VI_DEF,
1792 			    (char_u *)&p_lpl, PV_NONE,
1793 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1794     {"luadll",      NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1795 #if defined(DYNAMIC_LUA)
1796 			    (char_u *)&p_luadll, PV_NONE,
1797 			    {(char_u *)DYNAMIC_LUA_DLL, (char_u *)0L}
1798 #else
1799 			    (char_u *)NULL, PV_NONE,
1800 			    {(char_u *)"", (char_u *)0L}
1801 #endif
1802 			    SCTX_INIT},
1803     {"macatsui",    NULL,   P_BOOL|P_VI_DEF|P_RCLR,
1804 #ifdef FEAT_GUI_MAC
1805 			    (char_u *)&p_macatsui, PV_NONE,
1806 			    {(char_u *)TRUE, (char_u *)0L}
1807 #else
1808 			    (char_u *)NULL, PV_NONE,
1809 			    {(char_u *)"", (char_u *)0L}
1810 #endif
1811 			    SCTX_INIT},
1812     {"magic",	    NULL,   P_BOOL|P_VI_DEF,
1813 			    (char_u *)&p_magic, PV_NONE,
1814 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1815     {"makeef",	    "mef",  P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1816 #ifdef FEAT_QUICKFIX
1817 			    (char_u *)&p_mef, PV_NONE,
1818 			    {(char_u *)"", (char_u *)0L}
1819 #else
1820 			    (char_u *)NULL, PV_NONE,
1821 			    {(char_u *)NULL, (char_u *)0L}
1822 #endif
1823 			    SCTX_INIT},
1824     {"makeencoding","menc", P_STRING|P_VI_DEF,
1825 			    (char_u *)&p_menc, PV_MENC,
1826 			    {(char_u *)"", (char_u *)0L}
1827 			    SCTX_INIT},
1828     {"makeprg",	    "mp",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1829 #ifdef FEAT_QUICKFIX
1830 			    (char_u *)&p_mp, PV_MP,
1831 # ifdef VMS
1832 			    {(char_u *)"MMS", (char_u *)0L}
1833 # else
1834 			    {(char_u *)"make", (char_u *)0L}
1835 # endif
1836 #else
1837 			    (char_u *)NULL, PV_NONE,
1838 			    {(char_u *)NULL, (char_u *)0L}
1839 #endif
1840 			    SCTX_INIT},
1841     {"matchpairs",  "mps",  P_STRING|P_ALLOCED|P_VI_DEF|P_ONECOMMA|P_NODUP,
1842 			    (char_u *)&p_mps, PV_MPS,
1843 			    {(char_u *)"(:),{:},[:]", (char_u *)0L}
1844 			    SCTX_INIT},
1845     {"matchtime",   "mat",  P_NUM|P_VI_DEF,
1846 			    (char_u *)&p_mat, PV_NONE,
1847 			    {(char_u *)5L, (char_u *)0L} SCTX_INIT},
1848     {"maxcombine",  "mco",  P_NUM|P_VI_DEF|P_CURSWANT,
1849 			    (char_u *)&p_mco, PV_NONE,
1850 			    {(char_u *)2, (char_u *)0L} SCTX_INIT},
1851     {"maxfuncdepth", "mfd", P_NUM|P_VI_DEF,
1852 #ifdef FEAT_EVAL
1853 			    (char_u *)&p_mfd, PV_NONE,
1854 #else
1855 			    (char_u *)NULL, PV_NONE,
1856 #endif
1857 			    {(char_u *)100L, (char_u *)0L} SCTX_INIT},
1858     {"maxmapdepth", "mmd",  P_NUM|P_VI_DEF,
1859 			    (char_u *)&p_mmd, PV_NONE,
1860 			    {(char_u *)1000L, (char_u *)0L} SCTX_INIT},
1861     {"maxmem",	    "mm",   P_NUM|P_VI_DEF,
1862 			    (char_u *)&p_mm, PV_NONE,
1863 			    {(char_u *)DFLT_MAXMEM, (char_u *)0L}
1864 			    SCTX_INIT},
1865     {"maxmempattern","mmp", P_NUM|P_VI_DEF,
1866 			    (char_u *)&p_mmp, PV_NONE,
1867 			    {(char_u *)1000L, (char_u *)0L} SCTX_INIT},
1868     {"maxmemtot",   "mmt",  P_NUM|P_VI_DEF,
1869 			    (char_u *)&p_mmt, PV_NONE,
1870 			    {(char_u *)DFLT_MAXMEMTOT, (char_u *)0L}
1871 			    SCTX_INIT},
1872     {"menuitems",   "mis",  P_NUM|P_VI_DEF,
1873 #ifdef FEAT_MENU
1874 			    (char_u *)&p_mis, PV_NONE,
1875 #else
1876 			    (char_u *)NULL, PV_NONE,
1877 #endif
1878 			    {(char_u *)25L, (char_u *)0L} SCTX_INIT},
1879     {"mesg",	    NULL,   P_BOOL|P_VI_DEF,
1880 			    (char_u *)NULL, PV_NONE,
1881 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1882     {"mkspellmem",  "msm",  P_STRING|P_VI_DEF|P_EXPAND|P_SECURE,
1883 #ifdef FEAT_SPELL
1884 			    (char_u *)&p_msm, PV_NONE,
1885 			    {(char_u *)"460000,2000,500", (char_u *)0L}
1886 #else
1887 			    (char_u *)NULL, PV_NONE,
1888 			    {(char_u *)0L, (char_u *)0L}
1889 #endif
1890 			    SCTX_INIT},
1891     {"modeline",    "ml",   P_BOOL|P_VIM,
1892 			    (char_u *)&p_ml, PV_ML,
1893 			    {(char_u *)FALSE, (char_u *)TRUE} SCTX_INIT},
1894     {"modelines",   "mls",  P_NUM|P_VI_DEF,
1895 			    (char_u *)&p_mls, PV_NONE,
1896 			    {(char_u *)5L, (char_u *)0L} SCTX_INIT},
1897     {"modifiable",  "ma",   P_BOOL|P_VI_DEF|P_NOGLOB,
1898 			    (char_u *)&p_ma, PV_MA,
1899 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1900     {"modified",    "mod",  P_BOOL|P_NO_MKRC|P_VI_DEF|P_RSTAT,
1901 			    (char_u *)&p_mod, PV_MOD,
1902 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1903     {"more",	    NULL,   P_BOOL|P_VIM,
1904 			    (char_u *)&p_more, PV_NONE,
1905 			    {(char_u *)FALSE, (char_u *)TRUE} SCTX_INIT},
1906     {"mouse",	    NULL,   P_STRING|P_VI_DEF|P_FLAGLIST,
1907 			    (char_u *)&p_mouse, PV_NONE,
1908 			    {
1909 #if defined(WIN3264)
1910 				(char_u *)"a",
1911 #else
1912 				(char_u *)"",
1913 #endif
1914 				(char_u *)0L} SCTX_INIT},
1915     {"mousefocus",   "mousef", P_BOOL|P_VI_DEF,
1916 #ifdef FEAT_GUI
1917 			    (char_u *)&p_mousef, PV_NONE,
1918 #else
1919 			    (char_u *)NULL, PV_NONE,
1920 #endif
1921 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1922     {"mousehide",   "mh",   P_BOOL|P_VI_DEF,
1923 #ifdef FEAT_GUI
1924 			    (char_u *)&p_mh, PV_NONE,
1925 #else
1926 			    (char_u *)NULL, PV_NONE,
1927 #endif
1928 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
1929     {"mousemodel",  "mousem", P_STRING|P_VI_DEF,
1930 			    (char_u *)&p_mousem, PV_NONE,
1931 			    {
1932 #if defined(MSWIN)
1933 				(char_u *)"popup",
1934 #else
1935 # if defined(MACOS_X)
1936 				(char_u *)"popup_setpos",
1937 # else
1938 				(char_u *)"extend",
1939 # endif
1940 #endif
1941 				(char_u *)0L} SCTX_INIT},
1942     {"mouseshape",  "mouses",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
1943 #ifdef FEAT_MOUSESHAPE
1944 			    (char_u *)&p_mouseshape, PV_NONE,
1945 			    {(char_u *)"i-r:beam,s:updown,sd:udsizing,vs:leftright,vd:lrsizing,m:no,ml:up-arrow,v:rightup-arrow", (char_u *)0L}
1946 #else
1947 			    (char_u *)NULL, PV_NONE,
1948 			    {(char_u *)NULL, (char_u *)0L}
1949 #endif
1950 			    SCTX_INIT},
1951     {"mousetime",   "mouset",	P_NUM|P_VI_DEF,
1952 			    (char_u *)&p_mouset, PV_NONE,
1953 			    {(char_u *)500L, (char_u *)0L} SCTX_INIT},
1954     {"mzschemedll", NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1955 #if defined(DYNAMIC_MZSCHEME)
1956 			    (char_u *)&p_mzschemedll, PV_NONE,
1957 			    {(char_u *)DYNAMIC_MZSCH_DLL, (char_u *)0L}
1958 #else
1959 			    (char_u *)NULL, PV_NONE,
1960 			    {(char_u *)"", (char_u *)0L}
1961 #endif
1962 			    SCTX_INIT},
1963     {"mzschemegcdll", NULL, P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1964 #if defined(DYNAMIC_MZSCHEME)
1965 			    (char_u *)&p_mzschemegcdll, PV_NONE,
1966 			    {(char_u *)DYNAMIC_MZGC_DLL, (char_u *)0L}
1967 #else
1968 			    (char_u *)NULL, PV_NONE,
1969 			    {(char_u *)"", (char_u *)0L}
1970 #endif
1971 			    SCTX_INIT},
1972     {"mzquantum",  "mzq",   P_NUM,
1973 #ifdef FEAT_MZSCHEME
1974 			    (char_u *)&p_mzq, PV_NONE,
1975 #else
1976 			    (char_u *)NULL, PV_NONE,
1977 #endif
1978 			    {(char_u *)100L, (char_u *)100L} SCTX_INIT},
1979     {"novice",	    NULL,   P_BOOL|P_VI_DEF,
1980 			    (char_u *)NULL, PV_NONE,
1981 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1982     {"nrformats",   "nf",   P_STRING|P_ALLOCED|P_VI_DEF|P_ONECOMMA|P_NODUP,
1983 			    (char_u *)&p_nf, PV_NF,
1984 			    {(char_u *)"bin,octal,hex", (char_u *)0L}
1985 			    SCTX_INIT},
1986     {"number",	    "nu",   P_BOOL|P_VI_DEF|P_RWIN,
1987 			    (char_u *)VAR_WIN, PV_NU,
1988 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
1989     {"numberwidth", "nuw",  P_NUM|P_RWIN|P_VIM,
1990 #ifdef FEAT_LINEBREAK
1991 			    (char_u *)VAR_WIN, PV_NUW,
1992 #else
1993 			    (char_u *)NULL, PV_NONE,
1994 #endif
1995 			    {(char_u *)8L, (char_u *)4L} SCTX_INIT},
1996     {"omnifunc",    "ofu",  P_STRING|P_ALLOCED|P_VI_DEF|P_SECURE,
1997 #ifdef FEAT_COMPL_FUNC
1998 			    (char_u *)&p_ofu, PV_OFU,
1999 			    {(char_u *)"", (char_u *)0L}
2000 #else
2001 			    (char_u *)NULL, PV_NONE,
2002 			    {(char_u *)0L, (char_u *)0L}
2003 #endif
2004 			    SCTX_INIT},
2005     {"open",	    NULL,   P_BOOL|P_VI_DEF,
2006 			    (char_u *)NULL, PV_NONE,
2007 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2008     {"opendevice",  "odev", P_BOOL|P_VI_DEF,
2009 #if defined(MSWIN)
2010 			    (char_u *)&p_odev, PV_NONE,
2011 #else
2012 			    (char_u *)NULL, PV_NONE,
2013 #endif
2014 			    {(char_u *)FALSE, (char_u *)FALSE}
2015 			    SCTX_INIT},
2016     {"operatorfunc", "opfunc", P_STRING|P_VI_DEF|P_SECURE,
2017 			    (char_u *)&p_opfunc, PV_NONE,
2018 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2019     {"optimize",    "opt",  P_BOOL|P_VI_DEF,
2020 			    (char_u *)NULL, PV_NONE,
2021 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2022     {"osfiletype",  "oft",  P_STRING|P_ALLOCED|P_VI_DEF,
2023 			    (char_u *)NULL, PV_NONE,
2024 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2025     {"packpath",    "pp",   P_STRING|P_VI_DEF|P_EXPAND|P_ONECOMMA|P_NODUP
2026 								    |P_SECURE,
2027 			    (char_u *)&p_pp, PV_NONE,
2028 			    {(char_u *)DFLT_RUNTIMEPATH, (char_u *)0L}
2029 			    SCTX_INIT},
2030     {"paragraphs",  "para", P_STRING|P_VI_DEF,
2031 			    (char_u *)&p_para, PV_NONE,
2032 			    {(char_u *)"IPLPPPQPP TPHPLIPpLpItpplpipbp",
2033 				(char_u *)0L} SCTX_INIT},
2034     {"paste",	    NULL,   P_BOOL|P_VI_DEF|P_PRI_MKRC,
2035 			    (char_u *)&p_paste, PV_NONE,
2036 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2037     {"pastetoggle", "pt",   P_STRING|P_VI_DEF,
2038 			    (char_u *)&p_pt, PV_NONE,
2039 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2040     {"patchexpr",   "pex",  P_STRING|P_VI_DEF|P_SECURE,
2041 #if defined(FEAT_DIFF) && defined(FEAT_EVAL)
2042 			    (char_u *)&p_pex, PV_NONE,
2043 			    {(char_u *)"", (char_u *)0L}
2044 #else
2045 			    (char_u *)NULL, PV_NONE,
2046 			    {(char_u *)0L, (char_u *)0L}
2047 #endif
2048 			    SCTX_INIT},
2049     {"patchmode",   "pm",   P_STRING|P_VI_DEF|P_NFNAME,
2050 			    (char_u *)&p_pm, PV_NONE,
2051 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2052     {"path",	    "pa",   P_STRING|P_EXPAND|P_VI_DEF|P_COMMA|P_NODUP,
2053 			    (char_u *)&p_path, PV_PATH,
2054 			    {
2055 #if defined(AMIGA) || defined(MSWIN)
2056 			    (char_u *)".,,",
2057 #else
2058 			    (char_u *)".,/usr/include,,",
2059 #endif
2060 				(char_u *)0L} SCTX_INIT},
2061     {"perldll",     NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2062 #if defined(DYNAMIC_PERL)
2063 			    (char_u *)&p_perldll, PV_NONE,
2064 			    {(char_u *)DYNAMIC_PERL_DLL, (char_u *)0L}
2065 #else
2066 			    (char_u *)NULL, PV_NONE,
2067 			    {(char_u *)0L, (char_u *)0L}
2068 #endif
2069 			    SCTX_INIT},
2070     {"preserveindent", "pi", P_BOOL|P_VI_DEF|P_VIM,
2071 			    (char_u *)&p_pi, PV_PI,
2072 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2073     {"previewheight", "pvh", P_NUM|P_VI_DEF,
2074 #if defined(FEAT_QUICKFIX)
2075 			    (char_u *)&p_pvh, PV_NONE,
2076 #else
2077 			    (char_u *)NULL, PV_NONE,
2078 #endif
2079 			    {(char_u *)12L, (char_u *)0L} SCTX_INIT},
2080     {"previewwindow", "pvw", P_BOOL|P_VI_DEF|P_RSTAT|P_NOGLOB,
2081 #if defined(FEAT_QUICKFIX)
2082 			    (char_u *)VAR_WIN, PV_PVW,
2083 #else
2084 			    (char_u *)NULL, PV_NONE,
2085 #endif
2086 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2087     {"printdevice", "pdev", P_STRING|P_VI_DEF|P_SECURE,
2088 #ifdef FEAT_PRINTER
2089 			    (char_u *)&p_pdev, PV_NONE,
2090 			    {(char_u *)"", (char_u *)0L}
2091 #else
2092 			    (char_u *)NULL, PV_NONE,
2093 			    {(char_u *)NULL, (char_u *)0L}
2094 #endif
2095 			    SCTX_INIT},
2096     {"printencoding", "penc", P_STRING|P_VI_DEF,
2097 #ifdef FEAT_POSTSCRIPT
2098 			    (char_u *)&p_penc, PV_NONE,
2099 			    {(char_u *)"", (char_u *)0L}
2100 #else
2101 			    (char_u *)NULL, PV_NONE,
2102 			    {(char_u *)NULL, (char_u *)0L}
2103 #endif
2104 			    SCTX_INIT},
2105     {"printexpr", "pexpr",  P_STRING|P_VI_DEF|P_SECURE,
2106 #ifdef FEAT_POSTSCRIPT
2107 			    (char_u *)&p_pexpr, PV_NONE,
2108 			    {(char_u *)"", (char_u *)0L}
2109 #else
2110 			    (char_u *)NULL, PV_NONE,
2111 			    {(char_u *)NULL, (char_u *)0L}
2112 #endif
2113 			    SCTX_INIT},
2114     {"printfont", "pfn",    P_STRING|P_VI_DEF,
2115 #ifdef FEAT_PRINTER
2116 			    (char_u *)&p_pfn, PV_NONE,
2117 			    {
2118 # ifdef MSWIN
2119 				(char_u *)"Courier_New:h10",
2120 # else
2121 				(char_u *)"courier",
2122 # endif
2123 				(char_u *)0L}
2124 #else
2125 			    (char_u *)NULL, PV_NONE,
2126 			    {(char_u *)NULL, (char_u *)0L}
2127 #endif
2128 			    SCTX_INIT},
2129     {"printheader", "pheader",  P_STRING|P_VI_DEF|P_GETTEXT,
2130 #ifdef FEAT_PRINTER
2131 			    (char_u *)&p_header, PV_NONE,
2132 			    /* untranslated to avoid problems when 'encoding'
2133 			     * is changed */
2134 			    {(char_u *)"%<%f%h%m%=Page %N", (char_u *)0L}
2135 #else
2136 			    (char_u *)NULL, PV_NONE,
2137 			    {(char_u *)NULL, (char_u *)0L}
2138 #endif
2139 			    SCTX_INIT},
2140    {"printmbcharset", "pmbcs",  P_STRING|P_VI_DEF,
2141 #if defined(FEAT_POSTSCRIPT)
2142 			    (char_u *)&p_pmcs, PV_NONE,
2143 			    {(char_u *)"", (char_u *)0L}
2144 #else
2145 			    (char_u *)NULL, PV_NONE,
2146 			    {(char_u *)NULL, (char_u *)0L}
2147 #endif
2148 			    SCTX_INIT},
2149     {"printmbfont", "pmbfn",  P_STRING|P_VI_DEF,
2150 #if defined(FEAT_POSTSCRIPT)
2151 			    (char_u *)&p_pmfn, PV_NONE,
2152 			    {(char_u *)"", (char_u *)0L}
2153 #else
2154 			    (char_u *)NULL, PV_NONE,
2155 			    {(char_u *)NULL, (char_u *)0L}
2156 #endif
2157 			    SCTX_INIT},
2158     {"printoptions", "popt", P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
2159 #ifdef FEAT_PRINTER
2160 			    (char_u *)&p_popt, PV_NONE,
2161 			    {(char_u *)"", (char_u *)0L}
2162 #else
2163 			    (char_u *)NULL, PV_NONE,
2164 			    {(char_u *)NULL, (char_u *)0L}
2165 #endif
2166 			    SCTX_INIT},
2167     {"prompt",	    NULL,   P_BOOL|P_VI_DEF,
2168 			    (char_u *)&p_prompt, PV_NONE,
2169 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
2170     {"pumheight",   "ph",   P_NUM|P_VI_DEF,
2171 #ifdef FEAT_INS_EXPAND
2172 			    (char_u *)&p_ph, PV_NONE,
2173 #else
2174 			    (char_u *)NULL, PV_NONE,
2175 #endif
2176 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2177     {"pumwidth",    "pw",   P_NUM|P_VI_DEF,
2178 #ifdef FEAT_INS_EXPAND
2179 			    (char_u *)&p_pw, PV_NONE,
2180 #else
2181 			    (char_u *)NULL, PV_NONE,
2182 #endif
2183 			    {(char_u *)15L, (char_u *)15L} SCTX_INIT},
2184     {"pythonthreedll",  NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2185 #if defined(DYNAMIC_PYTHON3)
2186 			    (char_u *)&p_py3dll, PV_NONE,
2187 			    {(char_u *)DYNAMIC_PYTHON3_DLL, (char_u *)0L}
2188 #else
2189 			    (char_u *)NULL, PV_NONE,
2190 			    {(char_u *)NULL, (char_u *)0L}
2191 #endif
2192 			    SCTX_INIT},
2193     {"pythonthreehome", NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2194 #if defined(FEAT_PYTHON3)
2195 			    (char_u *)&p_py3home, PV_NONE,
2196 			    {(char_u *)"", (char_u *)0L}
2197 #else
2198 			    (char_u *)NULL, PV_NONE,
2199 			    {(char_u *)NULL, (char_u *)0L}
2200 #endif
2201 			    SCTX_INIT},
2202     {"pythondll",   NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2203 #if defined(DYNAMIC_PYTHON)
2204 			    (char_u *)&p_pydll, PV_NONE,
2205 			    {(char_u *)DYNAMIC_PYTHON_DLL, (char_u *)0L}
2206 #else
2207 			    (char_u *)NULL, PV_NONE,
2208 			    {(char_u *)NULL, (char_u *)0L}
2209 #endif
2210 			    SCTX_INIT},
2211     {"pythonhome",  NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2212 #if defined(FEAT_PYTHON)
2213 			    (char_u *)&p_pyhome, PV_NONE,
2214 			    {(char_u *)"", (char_u *)0L}
2215 #else
2216 			    (char_u *)NULL, PV_NONE,
2217 			    {(char_u *)NULL, (char_u *)0L}
2218 #endif
2219 			    SCTX_INIT},
2220     {"pyxversion", "pyx",   P_NUM|P_VI_DEF|P_SECURE,
2221 #if defined(FEAT_PYTHON) || defined(FEAT_PYTHON3)
2222 			    (char_u *)&p_pyx, PV_NONE,
2223 #else
2224 			    (char_u *)NULL, PV_NONE,
2225 #endif
2226 			    {(char_u *)DEFAULT_PYTHON_VER, (char_u *)0L}
2227 			    SCTX_INIT},
2228     {"quoteescape", "qe",   P_STRING|P_ALLOCED|P_VI_DEF,
2229 #ifdef FEAT_TEXTOBJ
2230 			    (char_u *)&p_qe, PV_QE,
2231 			    {(char_u *)"\\", (char_u *)0L}
2232 #else
2233 			    (char_u *)NULL, PV_NONE,
2234 			    {(char_u *)NULL, (char_u *)0L}
2235 #endif
2236 			    SCTX_INIT},
2237     {"readonly",    "ro",   P_BOOL|P_VI_DEF|P_RSTAT|P_NOGLOB,
2238 			    (char_u *)&p_ro, PV_RO,
2239 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2240     {"redraw",	    NULL,   P_BOOL|P_VI_DEF,
2241 			    (char_u *)NULL, PV_NONE,
2242 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2243     {"redrawtime",  "rdt",  P_NUM|P_VI_DEF,
2244 #ifdef FEAT_RELTIME
2245 			    (char_u *)&p_rdt, PV_NONE,
2246 #else
2247 			    (char_u *)NULL, PV_NONE,
2248 #endif
2249 			    {(char_u *)2000L, (char_u *)0L} SCTX_INIT},
2250     {"regexpengine", "re",  P_NUM|P_VI_DEF,
2251 			    (char_u *)&p_re, PV_NONE,
2252 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2253     {"relativenumber", "rnu", P_BOOL|P_VI_DEF|P_RWIN,
2254 			    (char_u *)VAR_WIN, PV_RNU,
2255 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2256     {"remap",	    NULL,   P_BOOL|P_VI_DEF,
2257 			    (char_u *)&p_remap, PV_NONE,
2258 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
2259     {"renderoptions", "rop", P_STRING|P_ONECOMMA|P_RCLR|P_VI_DEF,
2260 #ifdef FEAT_RENDER_OPTIONS
2261 			    (char_u *)&p_rop, PV_NONE,
2262 			    {(char_u *)"", (char_u *)0L}
2263 #else
2264 			    (char_u *)NULL, PV_NONE,
2265 			    {(char_u *)NULL, (char_u *)0L}
2266 #endif
2267 			    SCTX_INIT},
2268     {"report",	    NULL,   P_NUM|P_VI_DEF,
2269 			    (char_u *)&p_report, PV_NONE,
2270 			    {(char_u *)2L, (char_u *)0L} SCTX_INIT},
2271     {"restorescreen", "rs", P_BOOL|P_VI_DEF,
2272 #ifdef WIN3264
2273 			    (char_u *)&p_rs, PV_NONE,
2274 #else
2275 			    (char_u *)NULL, PV_NONE,
2276 #endif
2277 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
2278     {"revins",	    "ri",   P_BOOL|P_VI_DEF|P_VIM,
2279 #ifdef FEAT_RIGHTLEFT
2280 			    (char_u *)&p_ri, PV_NONE,
2281 #else
2282 			    (char_u *)NULL, PV_NONE,
2283 #endif
2284 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2285     {"rightleft",   "rl",   P_BOOL|P_VI_DEF|P_RWIN,
2286 #ifdef FEAT_RIGHTLEFT
2287 			    (char_u *)VAR_WIN, PV_RL,
2288 #else
2289 			    (char_u *)NULL, PV_NONE,
2290 #endif
2291 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2292     {"rightleftcmd", "rlc", P_STRING|P_ALLOCED|P_VI_DEF|P_RWIN,
2293 #ifdef FEAT_RIGHTLEFT
2294 			    (char_u *)VAR_WIN, PV_RLC,
2295 			    {(char_u *)"search", (char_u *)NULL}
2296 #else
2297 			    (char_u *)NULL, PV_NONE,
2298 			    {(char_u *)NULL, (char_u *)0L}
2299 #endif
2300 			    SCTX_INIT},
2301     {"rubydll",     NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2302 #if defined(DYNAMIC_RUBY)
2303 			    (char_u *)&p_rubydll, PV_NONE,
2304 			    {(char_u *)DYNAMIC_RUBY_DLL, (char_u *)0L}
2305 #else
2306 			    (char_u *)NULL, PV_NONE,
2307 			    {(char_u *)NULL, (char_u *)0L}
2308 #endif
2309 			    SCTX_INIT},
2310     {"ruler",	    "ru",   P_BOOL|P_VI_DEF|P_VIM|P_RSTAT,
2311 #ifdef FEAT_CMDL_INFO
2312 			    (char_u *)&p_ru, PV_NONE,
2313 #else
2314 			    (char_u *)NULL, PV_NONE,
2315 #endif
2316 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2317     {"rulerformat", "ruf",  P_STRING|P_VI_DEF|P_ALLOCED|P_RSTAT,
2318 #ifdef FEAT_STL_OPT
2319 			    (char_u *)&p_ruf, PV_NONE,
2320 #else
2321 			    (char_u *)NULL, PV_NONE,
2322 #endif
2323 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2324     {"runtimepath", "rtp",  P_STRING|P_VI_DEF|P_EXPAND|P_ONECOMMA|P_NODUP
2325 								    |P_SECURE,
2326 			    (char_u *)&p_rtp, PV_NONE,
2327 			    {(char_u *)DFLT_RUNTIMEPATH, (char_u *)0L}
2328 			    SCTX_INIT},
2329     {"scroll",	    "scr",  P_NUM|P_NO_MKRC|P_VI_DEF,
2330 			    (char_u *)VAR_WIN, PV_SCROLL,
2331 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2332     {"scrollbind",  "scb",  P_BOOL|P_VI_DEF,
2333 			    (char_u *)VAR_WIN, PV_SCBIND,
2334 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2335     {"scrolljump",  "sj",   P_NUM|P_VI_DEF|P_VIM,
2336 			    (char_u *)&p_sj, PV_NONE,
2337 			    {(char_u *)1L, (char_u *)0L} SCTX_INIT},
2338     {"scrolloff",   "so",   P_NUM|P_VI_DEF|P_VIM|P_RALL,
2339 			    (char_u *)&p_so, PV_SO,
2340 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2341     {"scrollopt",   "sbo",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
2342 			    (char_u *)&p_sbo, PV_NONE,
2343 			    {(char_u *)"ver,jump", (char_u *)0L}
2344 			    SCTX_INIT},
2345     {"sections",    "sect", P_STRING|P_VI_DEF,
2346 			    (char_u *)&p_sections, PV_NONE,
2347 			    {(char_u *)"SHNHH HUnhsh", (char_u *)0L}
2348 			    SCTX_INIT},
2349     {"secure",	    NULL,   P_BOOL|P_VI_DEF|P_SECURE,
2350 			    (char_u *)&p_secure, PV_NONE,
2351 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2352     {"selection",   "sel",  P_STRING|P_VI_DEF,
2353 			    (char_u *)&p_sel, PV_NONE,
2354 			    {(char_u *)"inclusive", (char_u *)0L}
2355 			    SCTX_INIT},
2356     {"selectmode",  "slm",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
2357 			    (char_u *)&p_slm, PV_NONE,
2358 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2359     {"sessionoptions", "ssop", P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
2360 #ifdef FEAT_SESSION
2361 			    (char_u *)&p_ssop, PV_NONE,
2362 	 {(char_u *)"blank,buffers,curdir,folds,help,options,tabpages,winsize,terminal",
2363 							       (char_u *)0L}
2364 #else
2365 			    (char_u *)NULL, PV_NONE,
2366 			    {(char_u *)0L, (char_u *)0L}
2367 #endif
2368 			    SCTX_INIT},
2369     {"shell",	    "sh",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2370 			    (char_u *)&p_sh, PV_NONE,
2371 			    {
2372 #ifdef VMS
2373 			    (char_u *)"-",
2374 #else
2375 # if defined(WIN3264)
2376 			    (char_u *)"",	/* set in set_init_1() */
2377 # else
2378 			    (char_u *)"sh",
2379 # endif
2380 #endif /* VMS */
2381 				(char_u *)0L} SCTX_INIT},
2382     {"shellcmdflag","shcf", P_STRING|P_VI_DEF|P_SECURE,
2383 			    (char_u *)&p_shcf, PV_NONE,
2384 			    {
2385 #if defined(MSWIN)
2386 			    (char_u *)"/c",
2387 #else
2388 			    (char_u *)"-c",
2389 #endif
2390 				(char_u *)0L} SCTX_INIT},
2391     {"shellpipe",   "sp",   P_STRING|P_VI_DEF|P_SECURE,
2392 #ifdef FEAT_QUICKFIX
2393 			    (char_u *)&p_sp, PV_NONE,
2394 			    {
2395 #if defined(UNIX)
2396 			    (char_u *)"| tee",
2397 #else
2398 			    (char_u *)">",
2399 #endif
2400 				(char_u *)0L}
2401 #else
2402 			    (char_u *)NULL, PV_NONE,
2403 			    {(char_u *)0L, (char_u *)0L}
2404 #endif
2405 			    SCTX_INIT},
2406     {"shellquote",  "shq",  P_STRING|P_VI_DEF|P_SECURE,
2407 			    (char_u *)&p_shq, PV_NONE,
2408 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2409     {"shellredir",  "srr",  P_STRING|P_VI_DEF|P_SECURE,
2410 			    (char_u *)&p_srr, PV_NONE,
2411 			    {(char_u *)">", (char_u *)0L} SCTX_INIT},
2412     {"shellslash",  "ssl",   P_BOOL|P_VI_DEF,
2413 #ifdef BACKSLASH_IN_FILENAME
2414 			    (char_u *)&p_ssl, PV_NONE,
2415 #else
2416 			    (char_u *)NULL, PV_NONE,
2417 #endif
2418 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2419     {"shelltemp",   "stmp", P_BOOL,
2420 			    (char_u *)&p_stmp, PV_NONE,
2421 			    {(char_u *)FALSE, (char_u *)TRUE} SCTX_INIT},
2422     {"shelltype",   "st",   P_NUM|P_VI_DEF,
2423 #ifdef AMIGA
2424 			    (char_u *)&p_st, PV_NONE,
2425 #else
2426 			    (char_u *)NULL, PV_NONE,
2427 #endif
2428 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2429     {"shellxquote", "sxq",  P_STRING|P_VI_DEF|P_SECURE,
2430 			    (char_u *)&p_sxq, PV_NONE,
2431 			    {
2432 #if defined(UNIX) && defined(USE_SYSTEM)
2433 			    (char_u *)"\"",
2434 #else
2435 			    (char_u *)"",
2436 #endif
2437 				(char_u *)0L} SCTX_INIT},
2438     {"shellxescape", "sxe", P_STRING|P_VI_DEF|P_SECURE,
2439 			    (char_u *)&p_sxe, PV_NONE,
2440 			    {
2441 #if defined(WIN3264)
2442 			    (char_u *)"\"&|<>()@^",
2443 #else
2444 			    (char_u *)"",
2445 #endif
2446 				(char_u *)0L} SCTX_INIT},
2447     {"shiftround",  "sr",   P_BOOL|P_VI_DEF|P_VIM,
2448 			    (char_u *)&p_sr, PV_NONE,
2449 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2450     {"shiftwidth",  "sw",   P_NUM|P_VI_DEF,
2451 			    (char_u *)&p_sw, PV_SW,
2452 			    {(char_u *)8L, (char_u *)0L} SCTX_INIT},
2453     {"shortmess",   "shm",  P_STRING|P_VIM|P_FLAGLIST,
2454 			    (char_u *)&p_shm, PV_NONE,
2455 			    {(char_u *)"", (char_u *)"filnxtToO"}
2456 			    SCTX_INIT},
2457     {"shortname",   "sn",   P_BOOL|P_VI_DEF,
2458 			    (char_u *)&p_sn, PV_SN,
2459 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2460     {"showbreak",   "sbr",  P_STRING|P_VI_DEF|P_RALL,
2461 #ifdef FEAT_LINEBREAK
2462 			    (char_u *)&p_sbr, PV_NONE,
2463 #else
2464 			    (char_u *)NULL, PV_NONE,
2465 #endif
2466 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2467     {"showcmd",	    "sc",   P_BOOL|P_VIM,
2468 #ifdef FEAT_CMDL_INFO
2469 			    (char_u *)&p_sc, PV_NONE,
2470 #else
2471 			    (char_u *)NULL, PV_NONE,
2472 #endif
2473 			    {(char_u *)FALSE,
2474 #ifdef UNIX
2475 				(char_u *)FALSE
2476 #else
2477 				(char_u *)TRUE
2478 #endif
2479 				} SCTX_INIT},
2480     {"showfulltag", "sft",  P_BOOL|P_VI_DEF,
2481 			    (char_u *)&p_sft, PV_NONE,
2482 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2483     {"showmatch",   "sm",   P_BOOL|P_VI_DEF,
2484 			    (char_u *)&p_sm, PV_NONE,
2485 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2486     {"showmode",    "smd",  P_BOOL|P_VIM,
2487 			    (char_u *)&p_smd, PV_NONE,
2488 			    {(char_u *)FALSE, (char_u *)TRUE} SCTX_INIT},
2489     {"showtabline", "stal", P_NUM|P_VI_DEF|P_RALL,
2490 			    (char_u *)&p_stal, PV_NONE,
2491 			    {(char_u *)1L, (char_u *)0L} SCTX_INIT},
2492     {"sidescroll",  "ss",   P_NUM|P_VI_DEF,
2493 			    (char_u *)&p_ss, PV_NONE,
2494 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2495     {"sidescrolloff", "siso", P_NUM|P_VI_DEF|P_VIM|P_RBUF,
2496 			    (char_u *)&p_siso, PV_SISO,
2497 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2498     {"signcolumn",   "scl",  P_STRING|P_ALLOCED|P_VI_DEF|P_RWIN,
2499 #ifdef FEAT_SIGNS
2500 			    (char_u *)VAR_WIN, PV_SCL,
2501 			    {(char_u *)"auto", (char_u *)0L}
2502 #else
2503 			    (char_u *)NULL, PV_NONE,
2504 			    {(char_u *)NULL, (char_u *)0L}
2505 #endif
2506 			    SCTX_INIT},
2507     {"slowopen",    "slow", P_BOOL|P_VI_DEF,
2508 			    (char_u *)NULL, PV_NONE,
2509 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2510     {"smartcase",   "scs",  P_BOOL|P_VI_DEF|P_VIM,
2511 			    (char_u *)&p_scs, PV_NONE,
2512 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2513     {"smartindent", "si",   P_BOOL|P_VI_DEF|P_VIM,
2514 #ifdef FEAT_SMARTINDENT
2515 			    (char_u *)&p_si, PV_SI,
2516 #else
2517 			    (char_u *)NULL, PV_NONE,
2518 #endif
2519 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2520     {"smarttab",    "sta",  P_BOOL|P_VI_DEF|P_VIM,
2521 			    (char_u *)&p_sta, PV_NONE,
2522 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2523     {"softtabstop", "sts",  P_NUM|P_VI_DEF|P_VIM,
2524 			    (char_u *)&p_sts, PV_STS,
2525 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2526     {"sourceany",   NULL,   P_BOOL|P_VI_DEF,
2527 			    (char_u *)NULL, PV_NONE,
2528 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2529     {"spell",	    NULL,   P_BOOL|P_VI_DEF|P_RWIN,
2530 #ifdef FEAT_SPELL
2531 			    (char_u *)VAR_WIN, PV_SPELL,
2532 #else
2533 			    (char_u *)NULL, PV_NONE,
2534 #endif
2535 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2536     {"spellcapcheck", "spc", P_STRING|P_ALLOCED|P_VI_DEF|P_RBUF,
2537 #ifdef FEAT_SPELL
2538 			    (char_u *)&p_spc, PV_SPC,
2539 			    {(char_u *)"[.?!]\\_[\\])'\"	 ]\\+", (char_u *)0L}
2540 #else
2541 			    (char_u *)NULL, PV_NONE,
2542 			    {(char_u *)0L, (char_u *)0L}
2543 #endif
2544 			    SCTX_INIT},
2545     {"spellfile",   "spf",  P_STRING|P_EXPAND|P_ALLOCED|P_VI_DEF|P_SECURE
2546 								  |P_ONECOMMA,
2547 #ifdef FEAT_SPELL
2548 			    (char_u *)&p_spf, PV_SPF,
2549 			    {(char_u *)"", (char_u *)0L}
2550 #else
2551 			    (char_u *)NULL, PV_NONE,
2552 			    {(char_u *)0L, (char_u *)0L}
2553 #endif
2554 			    SCTX_INIT},
2555     {"spelllang",   "spl",  P_STRING|P_ALLOCED|P_VI_DEF|P_ONECOMMA
2556 							     |P_RBUF|P_EXPAND,
2557 #ifdef FEAT_SPELL
2558 			    (char_u *)&p_spl, PV_SPL,
2559 			    {(char_u *)"en", (char_u *)0L}
2560 #else
2561 			    (char_u *)NULL, PV_NONE,
2562 			    {(char_u *)0L, (char_u *)0L}
2563 #endif
2564 			    SCTX_INIT},
2565     {"spellsuggest", "sps", P_STRING|P_VI_DEF|P_EXPAND|P_SECURE|P_ONECOMMA,
2566 #ifdef FEAT_SPELL
2567 			    (char_u *)&p_sps, PV_NONE,
2568 			    {(char_u *)"best", (char_u *)0L}
2569 #else
2570 			    (char_u *)NULL, PV_NONE,
2571 			    {(char_u *)0L, (char_u *)0L}
2572 #endif
2573 			    SCTX_INIT},
2574     {"splitbelow",  "sb",   P_BOOL|P_VI_DEF,
2575 			    (char_u *)&p_sb, PV_NONE,
2576 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2577     {"splitright",  "spr",  P_BOOL|P_VI_DEF,
2578 			    (char_u *)&p_spr, PV_NONE,
2579 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2580     {"startofline", "sol",  P_BOOL|P_VI_DEF|P_VIM,
2581 			    (char_u *)&p_sol, PV_NONE,
2582 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
2583     {"statusline"  ,"stl",  P_STRING|P_VI_DEF|P_ALLOCED|P_RSTAT,
2584 #ifdef FEAT_STL_OPT
2585 			    (char_u *)&p_stl, PV_STL,
2586 #else
2587 			    (char_u *)NULL, PV_NONE,
2588 #endif
2589 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2590     {"suffixes",    "su",   P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
2591 			    (char_u *)&p_su, PV_NONE,
2592 			    {(char_u *)".bak,~,.o,.h,.info,.swp,.obj",
2593 				(char_u *)0L} SCTX_INIT},
2594     {"suffixesadd", "sua",  P_STRING|P_VI_DEF|P_ALLOCED|P_ONECOMMA|P_NODUP,
2595 #ifdef FEAT_SEARCHPATH
2596 			    (char_u *)&p_sua, PV_SUA,
2597 			    {(char_u *)"", (char_u *)0L}
2598 #else
2599 			    (char_u *)NULL, PV_NONE,
2600 			    {(char_u *)0L, (char_u *)0L}
2601 #endif
2602 			    SCTX_INIT},
2603     {"swapfile",    "swf",  P_BOOL|P_VI_DEF|P_RSTAT,
2604 			    (char_u *)&p_swf, PV_SWF,
2605 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
2606     {"swapsync",    "sws",  P_STRING|P_VI_DEF,
2607 			    (char_u *)&p_sws, PV_NONE,
2608 			    {(char_u *)"fsync", (char_u *)0L} SCTX_INIT},
2609     {"switchbuf",   "swb",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
2610 			    (char_u *)&p_swb, PV_NONE,
2611 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2612     {"synmaxcol",   "smc",  P_NUM|P_VI_DEF|P_RBUF,
2613 #ifdef FEAT_SYN_HL
2614 			    (char_u *)&p_smc, PV_SMC,
2615 			    {(char_u *)3000L, (char_u *)0L}
2616 #else
2617 			    (char_u *)NULL, PV_NONE,
2618 			    {(char_u *)0L, (char_u *)0L}
2619 #endif
2620 			    SCTX_INIT},
2621     {"syntax",	    "syn",  P_STRING|P_ALLOCED|P_VI_DEF|P_NOGLOB|P_NFNAME,
2622 #ifdef FEAT_SYN_HL
2623 			    (char_u *)&p_syn, PV_SYN,
2624 			    {(char_u *)"", (char_u *)0L}
2625 #else
2626 			    (char_u *)NULL, PV_NONE,
2627 			    {(char_u *)0L, (char_u *)0L}
2628 #endif
2629 			    SCTX_INIT},
2630     {"tabline",	    "tal",  P_STRING|P_VI_DEF|P_RALL,
2631 #ifdef FEAT_STL_OPT
2632 			    (char_u *)&p_tal, PV_NONE,
2633 #else
2634 			    (char_u *)NULL, PV_NONE,
2635 #endif
2636 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2637     {"tabpagemax",  "tpm",  P_NUM|P_VI_DEF,
2638 			    (char_u *)&p_tpm, PV_NONE,
2639 			    {(char_u *)10L, (char_u *)0L} SCTX_INIT},
2640     {"tabstop",	    "ts",   P_NUM|P_VI_DEF|P_RBUF,
2641 			    (char_u *)&p_ts, PV_TS,
2642 			    {(char_u *)8L, (char_u *)0L} SCTX_INIT},
2643     {"tagbsearch",  "tbs",   P_BOOL|P_VI_DEF,
2644 			    (char_u *)&p_tbs, PV_NONE,
2645 #ifdef VMS	/* binary searching doesn't appear to work on VMS */
2646 			    {(char_u *)0L, (char_u *)0L}
2647 #else
2648 			    {(char_u *)TRUE, (char_u *)0L}
2649 #endif
2650 			    SCTX_INIT},
2651     {"tagcase",	    "tc",   P_STRING|P_VIM,
2652 			    (char_u *)&p_tc, PV_TC,
2653 			    {(char_u *)"followic", (char_u *)"followic"} SCTX_INIT},
2654     {"taglength",   "tl",   P_NUM|P_VI_DEF,
2655 			    (char_u *)&p_tl, PV_NONE,
2656 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2657     {"tagrelative", "tr",   P_BOOL|P_VIM,
2658 			    (char_u *)&p_tr, PV_NONE,
2659 			    {(char_u *)FALSE, (char_u *)TRUE} SCTX_INIT},
2660     {"tags",	    "tag",  P_STRING|P_EXPAND|P_VI_DEF|P_ONECOMMA|P_NODUP,
2661 			    (char_u *)&p_tags, PV_TAGS,
2662 			    {
2663 #if defined(FEAT_EMACS_TAGS) && !defined(CASE_INSENSITIVE_FILENAME)
2664 			    (char_u *)"./tags,./TAGS,tags,TAGS",
2665 #else
2666 			    (char_u *)"./tags,tags",
2667 #endif
2668 				(char_u *)0L} SCTX_INIT},
2669     {"tagstack",    "tgst", P_BOOL|P_VI_DEF,
2670 			    (char_u *)&p_tgst, PV_NONE,
2671 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
2672     {"tcldll",      NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2673 #if defined(DYNAMIC_TCL)
2674 			    (char_u *)&p_tcldll, PV_NONE,
2675 			    {(char_u *)DYNAMIC_TCL_DLL, (char_u *)0L}
2676 #else
2677 			    (char_u *)NULL, PV_NONE,
2678 			    {(char_u *)0L, (char_u *)0L}
2679 #endif
2680 			    SCTX_INIT},
2681     {"term",	    NULL,   P_STRING|P_EXPAND|P_NODEFAULT|P_NO_MKRC|P_VI_DEF|P_RALL,
2682 			    (char_u *)&T_NAME, PV_NONE,
2683 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2684     {"termbidi", "tbidi",   P_BOOL|P_VI_DEF,
2685 #ifdef FEAT_ARABIC
2686 			    (char_u *)&p_tbidi, PV_NONE,
2687 #else
2688 			    (char_u *)NULL, PV_NONE,
2689 #endif
2690 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2691     {"termencoding", "tenc", P_STRING|P_VI_DEF|P_RCLR,
2692 			    (char_u *)&p_tenc, PV_NONE,
2693 			    {(char_u *)"", (char_u *)0L}
2694 			    SCTX_INIT},
2695     {"termguicolors", "tgc", P_BOOL|P_VI_DEF|P_VIM|P_RCLR,
2696 #ifdef FEAT_TERMGUICOLORS
2697 			    (char_u *)&p_tgc, PV_NONE,
2698 			    {(char_u *)FALSE, (char_u *)FALSE}
2699 #else
2700 			    (char_u*)NULL, PV_NONE,
2701 			    {(char_u *)FALSE, (char_u *)FALSE}
2702 #endif
2703 			    SCTX_INIT},
2704     {"termmode", "tmod",    P_STRING|P_ALLOCED|P_VI_DEF,
2705 #ifdef FEAT_TERMINAL
2706 			    (char_u *)VAR_WIN, PV_TMOD,
2707 			    {(char_u *)"", (char_u *)NULL}
2708 #else
2709 			    (char_u *)NULL, PV_NONE,
2710 			    {(char_u *)NULL, (char_u *)0L}
2711 #endif
2712 			    SCTX_INIT},
2713     {"termwinkey", "twk",   P_STRING|P_ALLOCED|P_RWIN|P_VI_DEF,
2714 #ifdef FEAT_TERMINAL
2715 			    (char_u *)VAR_WIN, PV_TWK,
2716 			    {(char_u *)"", (char_u *)NULL}
2717 #else
2718 			    (char_u *)NULL, PV_NONE,
2719 			    {(char_u *)NULL, (char_u *)0L}
2720 #endif
2721 			    SCTX_INIT},
2722     {"termwinscroll", "twsl", P_NUM|P_VI_DEF|P_VIM|P_RBUF,
2723 #ifdef FEAT_TERMINAL
2724 			    (char_u *)&p_twsl, PV_TWSL,
2725 			    {(char_u *)10000L, (char_u *)10000L}
2726 #else
2727 			    (char_u *)NULL, PV_NONE,
2728 			    {(char_u *)NULL, (char_u *)0L}
2729 #endif
2730 			    SCTX_INIT},
2731     {"termwinsize", "tws",  P_STRING|P_ALLOCED|P_RWIN|P_VI_DEF,
2732 #ifdef FEAT_TERMINAL
2733 			    (char_u *)VAR_WIN, PV_TWS,
2734 			    {(char_u *)"", (char_u *)NULL}
2735 #else
2736 			    (char_u *)NULL, PV_NONE,
2737 			    {(char_u *)NULL, (char_u *)0L}
2738 #endif
2739 			    SCTX_INIT},
2740     {"terse",	    NULL,   P_BOOL|P_VI_DEF,
2741 			    (char_u *)&p_terse, PV_NONE,
2742 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2743     {"textauto",    "ta",   P_BOOL|P_VIM,
2744 			    (char_u *)&p_ta, PV_NONE,
2745 			    {(char_u *)DFLT_TEXTAUTO, (char_u *)TRUE}
2746 			    SCTX_INIT},
2747     {"textmode",    "tx",   P_BOOL|P_VI_DEF|P_NO_MKRC,
2748 			    (char_u *)&p_tx, PV_TX,
2749 			    {
2750 #ifdef USE_CRNL
2751 			    (char_u *)TRUE,
2752 #else
2753 			    (char_u *)FALSE,
2754 #endif
2755 				(char_u *)0L} SCTX_INIT},
2756     {"textwidth",   "tw",   P_NUM|P_VI_DEF|P_VIM|P_RBUF,
2757 			    (char_u *)&p_tw, PV_TW,
2758 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2759     {"thesaurus",   "tsr",  P_STRING|P_EXPAND|P_VI_DEF|P_ONECOMMA|P_NODUP|P_NDNAME,
2760 #ifdef FEAT_INS_EXPAND
2761 			    (char_u *)&p_tsr, PV_TSR,
2762 #else
2763 			    (char_u *)NULL, PV_NONE,
2764 #endif
2765 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2766     {"tildeop",	    "top",  P_BOOL|P_VI_DEF|P_VIM,
2767 			    (char_u *)&p_to, PV_NONE,
2768 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2769     {"timeout",	    "to",   P_BOOL|P_VI_DEF,
2770 			    (char_u *)&p_timeout, PV_NONE,
2771 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
2772     {"timeoutlen",  "tm",   P_NUM|P_VI_DEF,
2773 			    (char_u *)&p_tm, PV_NONE,
2774 			    {(char_u *)1000L, (char_u *)0L} SCTX_INIT},
2775     {"title",	    NULL,   P_BOOL|P_VI_DEF,
2776 #ifdef FEAT_TITLE
2777 			    (char_u *)&p_title, PV_NONE,
2778 #else
2779 			    (char_u *)NULL, PV_NONE,
2780 #endif
2781 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2782     {"titlelen",    NULL,   P_NUM|P_VI_DEF,
2783 #ifdef FEAT_TITLE
2784 			    (char_u *)&p_titlelen, PV_NONE,
2785 #else
2786 			    (char_u *)NULL, PV_NONE,
2787 #endif
2788 			    {(char_u *)85L, (char_u *)0L} SCTX_INIT},
2789     {"titleold",    NULL,   P_STRING|P_VI_DEF|P_GETTEXT|P_SECURE|P_NO_MKRC,
2790 #ifdef FEAT_TITLE
2791 			    (char_u *)&p_titleold, PV_NONE,
2792 			    {(char_u *)N_("Thanks for flying Vim"),
2793 							       (char_u *)0L}
2794 #else
2795 			    (char_u *)NULL, PV_NONE,
2796 			    {(char_u *)0L, (char_u *)0L}
2797 #endif
2798 			    SCTX_INIT},
2799     {"titlestring", NULL,   P_STRING|P_VI_DEF,
2800 #ifdef FEAT_TITLE
2801 			    (char_u *)&p_titlestring, PV_NONE,
2802 #else
2803 			    (char_u *)NULL, PV_NONE,
2804 #endif
2805 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2806     {"toolbar",     "tb",   P_STRING|P_ONECOMMA|P_VI_DEF|P_NODUP,
2807 #if defined(FEAT_TOOLBAR) && !defined(FEAT_GUI_W32)
2808 			    (char_u *)&p_toolbar, PV_NONE,
2809 			    {(char_u *)"icons,tooltips", (char_u *)0L}
2810 #else
2811 			    (char_u *)NULL, PV_NONE,
2812 			    {(char_u *)0L, (char_u *)0L}
2813 #endif
2814 			    SCTX_INIT},
2815     {"toolbariconsize",	"tbis", P_STRING|P_VI_DEF,
2816 #if defined(FEAT_TOOLBAR) && defined(FEAT_GUI_GTK)
2817 			    (char_u *)&p_tbis, PV_NONE,
2818 			    {(char_u *)"small", (char_u *)0L}
2819 #else
2820 			    (char_u *)NULL, PV_NONE,
2821 			    {(char_u *)0L, (char_u *)0L}
2822 #endif
2823 			    SCTX_INIT},
2824     {"ttimeout",    NULL,   P_BOOL|P_VI_DEF|P_VIM,
2825 			    (char_u *)&p_ttimeout, PV_NONE,
2826 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2827     {"ttimeoutlen", "ttm",  P_NUM|P_VI_DEF,
2828 			    (char_u *)&p_ttm, PV_NONE,
2829 			    {(char_u *)-1L, (char_u *)0L} SCTX_INIT},
2830     {"ttybuiltin",  "tbi",  P_BOOL|P_VI_DEF,
2831 			    (char_u *)&p_tbi, PV_NONE,
2832 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
2833     {"ttyfast",	    "tf",   P_BOOL|P_NO_MKRC|P_VI_DEF,
2834 			    (char_u *)&p_tf, PV_NONE,
2835 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2836     {"ttymouse",    "ttym", P_STRING|P_NODEFAULT|P_NO_MKRC|P_VI_DEF,
2837 #if defined(FEAT_MOUSE) && (defined(UNIX) || defined(VMS))
2838 			    (char_u *)&p_ttym, PV_NONE,
2839 #else
2840 			    (char_u *)NULL, PV_NONE,
2841 #endif
2842 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2843     {"ttyscroll",   "tsl",  P_NUM|P_VI_DEF,
2844 			    (char_u *)&p_ttyscroll, PV_NONE,
2845 			    {(char_u *)999L, (char_u *)0L} SCTX_INIT},
2846     {"ttytype",	    "tty",  P_STRING|P_EXPAND|P_NODEFAULT|P_NO_MKRC|P_VI_DEF|P_RALL,
2847 			    (char_u *)&T_NAME, PV_NONE,
2848 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2849     {"undodir",     "udir", P_STRING|P_EXPAND|P_ONECOMMA|P_NODUP|P_SECURE
2850 								    |P_VI_DEF,
2851 #ifdef FEAT_PERSISTENT_UNDO
2852 			    (char_u *)&p_udir, PV_NONE,
2853 			    {(char_u *)".", (char_u *)0L}
2854 #else
2855 			    (char_u *)NULL, PV_NONE,
2856 			    {(char_u *)0L, (char_u *)0L}
2857 #endif
2858 			    SCTX_INIT},
2859     {"undofile",    "udf",  P_BOOL|P_VI_DEF|P_VIM,
2860 #ifdef FEAT_PERSISTENT_UNDO
2861 			    (char_u *)&p_udf, PV_UDF,
2862 #else
2863 			    (char_u *)NULL, PV_NONE,
2864 #endif
2865 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2866     {"undolevels",  "ul",   P_NUM|P_VI_DEF,
2867 			    (char_u *)&p_ul, PV_UL,
2868 			    {
2869 #if defined(UNIX) || defined(WIN3264) || defined(VMS)
2870 			    (char_u *)1000L,
2871 #else
2872 			    (char_u *)100L,
2873 #endif
2874 				(char_u *)0L} SCTX_INIT},
2875     {"undoreload",  "ur",   P_NUM|P_VI_DEF,
2876 			    (char_u *)&p_ur, PV_NONE,
2877 			    { (char_u *)10000L, (char_u *)0L} SCTX_INIT},
2878     {"updatecount", "uc",   P_NUM|P_VI_DEF,
2879 			    (char_u *)&p_uc, PV_NONE,
2880 			    {(char_u *)200L, (char_u *)0L} SCTX_INIT},
2881     {"updatetime",  "ut",   P_NUM|P_VI_DEF,
2882 			    (char_u *)&p_ut, PV_NONE,
2883 			    {(char_u *)4000L, (char_u *)0L} SCTX_INIT},
2884     {"varsofttabstop", "vsts",  P_STRING|P_VI_DEF|P_VIM|P_COMMA,
2885 #ifdef FEAT_VARTABS
2886 			    (char_u *)&p_vsts, PV_VSTS,
2887 			    {(char_u *)"", (char_u *)0L}
2888 #else
2889 			    (char_u *)NULL, PV_NONE,
2890 			    {(char_u *)"", (char_u *)NULL}
2891 #endif
2892 			    SCTX_INIT},
2893     {"vartabstop",  "vts",  P_STRING|P_VI_DEF|P_VIM|P_RBUF|P_COMMA,
2894 #ifdef FEAT_VARTABS
2895 			    (char_u *)&p_vts, PV_VTS,
2896 			    {(char_u *)"", (char_u *)0L}
2897 #else
2898 			    (char_u *)NULL, PV_NONE,
2899 			    {(char_u *)"", (char_u *)NULL}
2900 #endif
2901 			    SCTX_INIT},
2902     {"verbose",	    "vbs",  P_NUM|P_VI_DEF,
2903 			    (char_u *)&p_verbose, PV_NONE,
2904 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2905     {"verbosefile", "vfile", P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2906 			    (char_u *)&p_vfile, PV_NONE,
2907 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2908     {"viewdir",     "vdir", P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2909 #ifdef FEAT_SESSION
2910 			    (char_u *)&p_vdir, PV_NONE,
2911 			    {(char_u *)DFLT_VDIR, (char_u *)0L}
2912 #else
2913 			    (char_u *)NULL, PV_NONE,
2914 			    {(char_u *)0L, (char_u *)0L}
2915 #endif
2916 			    SCTX_INIT},
2917     {"viewoptions", "vop",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
2918 #ifdef FEAT_SESSION
2919 			    (char_u *)&p_vop, PV_NONE,
2920 			    {(char_u *)"folds,options,cursor,curdir",
2921 								  (char_u *)0L}
2922 #else
2923 			    (char_u *)NULL, PV_NONE,
2924 			    {(char_u *)0L, (char_u *)0L}
2925 #endif
2926 			    SCTX_INIT},
2927     {"viminfo",	    "vi",   P_STRING|P_ONECOMMA|P_NODUP|P_SECURE,
2928 #ifdef FEAT_VIMINFO
2929 			    (char_u *)&p_viminfo, PV_NONE,
2930 #if defined(MSWIN)
2931 			    {(char_u *)"", (char_u *)"'100,<50,s10,h,rA:,rB:"}
2932 #else
2933 # ifdef AMIGA
2934 			    {(char_u *)"",
2935 				 (char_u *)"'100,<50,s10,h,rdf0:,rdf1:,rdf2:"}
2936 # else
2937 			    {(char_u *)"", (char_u *)"'100,<50,s10,h"}
2938 # endif
2939 #endif
2940 #else
2941 			    (char_u *)NULL, PV_NONE,
2942 			    {(char_u *)0L, (char_u *)0L}
2943 #endif
2944 			    SCTX_INIT},
2945     {"viminfofile", "vif",  P_STRING|P_EXPAND|P_ONECOMMA|P_NODUP
2946 							    |P_SECURE|P_VI_DEF,
2947 #ifdef FEAT_VIMINFO
2948 			    (char_u *)&p_viminfofile, PV_NONE,
2949 			    {(char_u *)"", (char_u *)0L}
2950 #else
2951 			    (char_u *)NULL, PV_NONE,
2952 			    {(char_u *)0L, (char_u *)0L}
2953 #endif
2954 			    SCTX_INIT},
2955     {"virtualedit", "ve",   P_STRING|P_ONECOMMA|P_NODUP|P_VI_DEF
2956 							    |P_VIM|P_CURSWANT,
2957 			    (char_u *)&p_ve, PV_NONE,
2958 			    {(char_u *)"", (char_u *)""}
2959 			    SCTX_INIT},
2960     {"visualbell",  "vb",   P_BOOL|P_VI_DEF,
2961 			    (char_u *)&p_vb, PV_NONE,
2962 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2963     {"w300",	    NULL,   P_NUM|P_VI_DEF,
2964 			    (char_u *)NULL, PV_NONE,
2965 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2966     {"w1200",	    NULL,   P_NUM|P_VI_DEF,
2967 			    (char_u *)NULL, PV_NONE,
2968 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2969     {"w9600",	    NULL,   P_NUM|P_VI_DEF,
2970 			    (char_u *)NULL, PV_NONE,
2971 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2972     {"warn",	    NULL,   P_BOOL|P_VI_DEF,
2973 			    (char_u *)&p_warn, PV_NONE,
2974 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
2975     {"weirdinvert", "wiv",  P_BOOL|P_VI_DEF|P_RCLR,
2976 			    (char_u *)&p_wiv, PV_NONE,
2977 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2978     {"whichwrap",   "ww",   P_STRING|P_VIM|P_ONECOMMA|P_FLAGLIST,
2979 			    (char_u *)&p_ww, PV_NONE,
2980 			    {(char_u *)"", (char_u *)"b,s"} SCTX_INIT},
2981     {"wildchar",    "wc",   P_NUM|P_VIM,
2982 			    (char_u *)&p_wc, PV_NONE,
2983 			    {(char_u *)(long)Ctrl_E, (char_u *)(long)TAB}
2984 			    SCTX_INIT},
2985     {"wildcharm",   "wcm",  P_NUM|P_VI_DEF,
2986 			    (char_u *)&p_wcm, PV_NONE,
2987 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
2988     {"wildignore",  "wig",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
2989 #ifdef FEAT_WILDIGN
2990 			    (char_u *)&p_wig, PV_NONE,
2991 #else
2992 			    (char_u *)NULL, PV_NONE,
2993 #endif
2994 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
2995     {"wildignorecase", "wic", P_BOOL|P_VI_DEF,
2996 			    (char_u *)&p_wic, PV_NONE,
2997 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
2998     {"wildmenu",    "wmnu", P_BOOL|P_VI_DEF,
2999 #ifdef FEAT_WILDMENU
3000 			    (char_u *)&p_wmnu, PV_NONE,
3001 #else
3002 			    (char_u *)NULL, PV_NONE,
3003 #endif
3004 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
3005     {"wildmode",    "wim",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
3006 			    (char_u *)&p_wim, PV_NONE,
3007 			    {(char_u *)"full", (char_u *)0L} SCTX_INIT},
3008     {"wildoptions", "wop",  P_STRING|P_VI_DEF,
3009 #ifdef FEAT_CMDL_COMPL
3010 			    (char_u *)&p_wop, PV_NONE,
3011 			    {(char_u *)"", (char_u *)0L}
3012 #else
3013 			    (char_u *)NULL, PV_NONE,
3014 			    {(char_u *)NULL, (char_u *)0L}
3015 #endif
3016 			    SCTX_INIT},
3017     {"winaltkeys",  "wak",  P_STRING|P_VI_DEF,
3018 #ifdef FEAT_WAK
3019 			    (char_u *)&p_wak, PV_NONE,
3020 			    {(char_u *)"menu", (char_u *)0L}
3021 #else
3022 			    (char_u *)NULL, PV_NONE,
3023 			    {(char_u *)NULL, (char_u *)0L}
3024 #endif
3025 			    SCTX_INIT},
3026     {"window",	    "wi",   P_NUM|P_VI_DEF,
3027 			    (char_u *)&p_window, PV_NONE,
3028 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
3029     {"winheight",   "wh",   P_NUM|P_VI_DEF,
3030 			    (char_u *)&p_wh, PV_NONE,
3031 			    {(char_u *)1L, (char_u *)0L} SCTX_INIT},
3032     {"winfixheight", "wfh", P_BOOL|P_VI_DEF|P_RSTAT,
3033 			    (char_u *)VAR_WIN, PV_WFH,
3034 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
3035     {"winfixwidth", "wfw", P_BOOL|P_VI_DEF|P_RSTAT,
3036 			    (char_u *)VAR_WIN, PV_WFW,
3037 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
3038     {"winminheight", "wmh", P_NUM|P_VI_DEF,
3039 			    (char_u *)&p_wmh, PV_NONE,
3040 			    {(char_u *)1L, (char_u *)0L} SCTX_INIT},
3041     {"winminwidth", "wmw", P_NUM|P_VI_DEF,
3042 			    (char_u *)&p_wmw, PV_NONE,
3043 			    {(char_u *)1L, (char_u *)0L} SCTX_INIT},
3044     {"winptydll", NULL,	    P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
3045 #if defined(WIN3264) && defined(FEAT_TERMINAL)
3046 			    (char_u *)&p_winptydll, PV_NONE, {
3047 # ifdef _WIN64
3048 			    (char_u *)"winpty64.dll",
3049 # else
3050 			    (char_u *)"winpty32.dll",
3051 # endif
3052 				(char_u *)0L}
3053 #else
3054 			    (char_u *)NULL, PV_NONE,
3055 			    {(char_u *)0L, (char_u *)0L}
3056 #endif
3057 			    SCTX_INIT},
3058     {"winwidth",   "wiw",   P_NUM|P_VI_DEF,
3059 			    (char_u *)&p_wiw, PV_NONE,
3060 			    {(char_u *)20L, (char_u *)0L} SCTX_INIT},
3061     {"wrap",	    NULL,   P_BOOL|P_VI_DEF|P_RWIN,
3062 			    (char_u *)VAR_WIN, PV_WRAP,
3063 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
3064     {"wrapmargin",  "wm",   P_NUM|P_VI_DEF,
3065 			    (char_u *)&p_wm, PV_WM,
3066 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
3067     {"wrapscan",    "ws",   P_BOOL|P_VI_DEF,
3068 			    (char_u *)&p_ws, PV_NONE,
3069 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
3070     {"write",	    NULL,   P_BOOL|P_VI_DEF,
3071 			    (char_u *)&p_write, PV_NONE,
3072 			    {(char_u *)TRUE, (char_u *)0L} SCTX_INIT},
3073     {"writeany",    "wa",   P_BOOL|P_VI_DEF,
3074 			    (char_u *)&p_wa, PV_NONE,
3075 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
3076     {"writebackup", "wb",   P_BOOL|P_VI_DEF|P_VIM,
3077 			    (char_u *)&p_wb, PV_NONE,
3078 			    {
3079 #ifdef FEAT_WRITEBACKUP
3080 			    (char_u *)TRUE,
3081 #else
3082 			    (char_u *)FALSE,
3083 #endif
3084 				(char_u *)0L} SCTX_INIT},
3085     {"writedelay",  "wd",   P_NUM|P_VI_DEF,
3086 			    (char_u *)&p_wd, PV_NONE,
3087 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
3088 
3089 /* terminal output codes */
3090 #define p_term(sss, vvv)   {sss, NULL, P_STRING|P_VI_DEF|P_RALL|P_SECURE, \
3091 			    (char_u *)&vvv, PV_NONE, \
3092 			    {(char_u *)"", (char_u *)0L} SCTX_INIT},
3093 
3094     p_term("t_AB", T_CAB)
3095     p_term("t_AF", T_CAF)
3096     p_term("t_AL", T_CAL)
3097     p_term("t_al", T_AL)
3098     p_term("t_bc", T_BC)
3099     p_term("t_BE", T_BE)
3100     p_term("t_BD", T_BD)
3101     p_term("t_cd", T_CD)
3102     p_term("t_ce", T_CE)
3103     p_term("t_cl", T_CL)
3104     p_term("t_cm", T_CM)
3105     p_term("t_Ce", T_UCE)
3106     p_term("t_Co", T_CCO)
3107     p_term("t_CS", T_CCS)
3108     p_term("t_Cs", T_UCS)
3109     p_term("t_cs", T_CS)
3110     p_term("t_CV", T_CSV)
3111     p_term("t_da", T_DA)
3112     p_term("t_db", T_DB)
3113     p_term("t_DL", T_CDL)
3114     p_term("t_dl", T_DL)
3115     p_term("t_EC", T_CEC)
3116     p_term("t_EI", T_CEI)
3117     p_term("t_fs", T_FS)
3118     p_term("t_GP", T_CGP)
3119     p_term("t_IE", T_CIE)
3120     p_term("t_IS", T_CIS)
3121     p_term("t_ke", T_KE)
3122     p_term("t_ks", T_KS)
3123     p_term("t_le", T_LE)
3124     p_term("t_mb", T_MB)
3125     p_term("t_md", T_MD)
3126     p_term("t_me", T_ME)
3127     p_term("t_mr", T_MR)
3128     p_term("t_ms", T_MS)
3129     p_term("t_nd", T_ND)
3130     p_term("t_op", T_OP)
3131     p_term("t_RF", T_RFG)
3132     p_term("t_RB", T_RBG)
3133     p_term("t_RC", T_CRC)
3134     p_term("t_RI", T_CRI)
3135     p_term("t_Ri", T_SRI)
3136     p_term("t_RS", T_CRS)
3137     p_term("t_RT", T_CRT)
3138     p_term("t_RV", T_CRV)
3139     p_term("t_Sb", T_CSB)
3140     p_term("t_SC", T_CSC)
3141     p_term("t_se", T_SE)
3142     p_term("t_Sf", T_CSF)
3143     p_term("t_SH", T_CSH)
3144     p_term("t_SI", T_CSI)
3145     p_term("t_Si", T_SSI)
3146     p_term("t_so", T_SO)
3147     p_term("t_SR", T_CSR)
3148     p_term("t_sr", T_SR)
3149     p_term("t_ST", T_CST)
3150     p_term("t_Te", T_STE)
3151     p_term("t_te", T_TE)
3152     p_term("t_ti", T_TI)
3153     p_term("t_Ts", T_STS)
3154     p_term("t_ts", T_TS)
3155     p_term("t_u7", T_U7)
3156     p_term("t_ue", T_UE)
3157     p_term("t_us", T_US)
3158     p_term("t_ut", T_UT)
3159     p_term("t_vb", T_VB)
3160     p_term("t_ve", T_VE)
3161     p_term("t_vi", T_VI)
3162     p_term("t_VS", T_CVS)
3163     p_term("t_vs", T_VS)
3164     p_term("t_WP", T_CWP)
3165     p_term("t_WS", T_CWS)
3166     p_term("t_xn", T_XN)
3167     p_term("t_xs", T_XS)
3168     p_term("t_ZH", T_CZH)
3169     p_term("t_ZR", T_CZR)
3170     p_term("t_8f", T_8F)
3171     p_term("t_8b", T_8B)
3172 
3173 /* terminal key codes are not in here */
3174 
3175     /* end marker */
3176     {NULL, NULL, 0, NULL, PV_NONE, {NULL, NULL} SCTX_INIT}
3177 };
3178 
3179 #define PARAM_COUNT (sizeof(options) / sizeof(struct vimoption))
3180 
3181 static char *(p_ambw_values[]) = {"single", "double", NULL};
3182 static char *(p_bg_values[]) = {"light", "dark", NULL};
3183 static char *(p_nf_values[]) = {"bin", "octal", "hex", "alpha", NULL};
3184 static char *(p_ff_values[]) = {FF_UNIX, FF_DOS, FF_MAC, NULL};
3185 #ifdef FEAT_CRYPT
3186 static char *(p_cm_values[]) = {"zip", "blowfish", "blowfish2", NULL};
3187 #endif
3188 #ifdef FEAT_CMDL_COMPL
3189 static char *(p_wop_values[]) = {"tagfile", NULL};
3190 #endif
3191 #ifdef FEAT_WAK
3192 static char *(p_wak_values[]) = {"yes", "menu", "no", NULL};
3193 #endif
3194 static char *(p_mousem_values[]) = {"extend", "popup", "popup_setpos", "mac", NULL};
3195 static char *(p_sel_values[]) = {"inclusive", "exclusive", "old", NULL};
3196 static char *(p_slm_values[]) = {"mouse", "key", "cmd", NULL};
3197 static char *(p_km_values[]) = {"startsel", "stopsel", NULL};
3198 #ifdef FEAT_BROWSE
3199 static char *(p_bsdir_values[]) = {"current", "last", "buffer", NULL};
3200 #endif
3201 static char *(p_scbopt_values[]) = {"ver", "hor", "jump", NULL};
3202 static char *(p_debug_values[]) = {"msg", "throw", "beep", NULL};
3203 static char *(p_ead_values[]) = {"both", "ver", "hor", NULL};
3204 static char *(p_buftype_values[]) = {"nofile", "nowrite", "quickfix", "help", "terminal", "acwrite", "prompt", NULL};
3205 static char *(p_bufhidden_values[]) = {"hide", "unload", "delete", "wipe", NULL};
3206 static char *(p_bs_values[]) = {"indent", "eol", "start", NULL};
3207 #ifdef FEAT_FOLDING
3208 static char *(p_fdm_values[]) = {"manual", "expr", "marker", "indent", "syntax",
3209 # ifdef FEAT_DIFF
3210 				"diff",
3211 # endif
3212 				NULL};
3213 static char *(p_fcl_values[]) = {"all", NULL};
3214 #endif
3215 #ifdef FEAT_INS_EXPAND
3216 static char *(p_cot_values[]) = {"menu", "menuone", "longest", "preview", "noinsert", "noselect", NULL};
3217 #endif
3218 #ifdef FEAT_SIGNS
3219 static char *(p_scl_values[]) = {"yes", "no", "auto", NULL};
3220 #endif
3221 #ifdef FEAT_TERMINAL
3222 static char *(p_tmod_values[]) = {"winpty", "conpty", "", NULL};
3223 #endif
3224 
3225 static void set_options_default(int opt_flags);
3226 static void set_string_default_esc(char *name, char_u *val, int escape);
3227 static char_u *term_bg_default(void);
3228 static void did_set_option(int opt_idx, int opt_flags, int new_value, int value_checked);
3229 static char_u *option_expand(int opt_idx, char_u *val);
3230 static void didset_options(void);
3231 static void didset_options2(void);
3232 static void check_string_option(char_u **pp);
3233 #if defined(FEAT_EVAL) || defined(PROTO)
3234 static long_u *insecure_flag(int opt_idx, int opt_flags);
3235 #else
3236 # define insecure_flag(opt_idx, opt_flags) (&options[opt_idx].flags)
3237 #endif
3238 static void set_string_option_global(int opt_idx, char_u **varp);
3239 static char *did_set_string_option(int opt_idx, char_u **varp, int new_value_alloced, char_u *oldval, char *errbuf, int opt_flags, int *value_checked);
3240 static char *set_chars_option(char_u **varp);
3241 #ifdef FEAT_CLIPBOARD
3242 static char *check_clipboard_option(void);
3243 #endif
3244 #ifdef FEAT_SPELL
3245 static char *did_set_spell_option(int is_spellfile);
3246 static char *compile_cap_prog(synblock_T *synblock);
3247 #endif
3248 #ifdef FEAT_EVAL
3249 static void set_option_sctx_idx(int opt_idx, int opt_flags, sctx_T script_ctx);
3250 #endif
3251 static char *set_bool_option(int opt_idx, char_u *varp, int value, int opt_flags);
3252 static char *set_num_option(int opt_idx, char_u *varp, long value, char *errbuf, size_t errbuflen, int opt_flags);
3253 static void check_redraw(long_u flags);
3254 static int findoption(char_u *);
3255 static int find_key_option(char_u *arg_arg, int has_lt);
3256 static void showoptions(int all, int opt_flags);
3257 static int optval_default(struct vimoption *, char_u *varp);
3258 static void showoneopt(struct vimoption *, int opt_flags);
3259 static int put_setstring(FILE *fd, char *cmd, char *name, char_u **valuep, long_u flags);
3260 static int put_setnum(FILE *fd, char *cmd, char *name, long *valuep);
3261 static int put_setbool(FILE *fd, char *cmd, char *name, int value);
3262 static int  istermoption(struct vimoption *);
3263 static char_u *get_varp_scope(struct vimoption *p, int opt_flags);
3264 static char_u *get_varp(struct vimoption *);
3265 static void option_value2string(struct vimoption *, int opt_flags);
3266 static void check_winopt(winopt_T *wop);
3267 static int wc_use_keyname(char_u *varp, long *wcp);
3268 #ifdef FEAT_LANGMAP
3269 static void langmap_init(void);
3270 static void langmap_set(void);
3271 #endif
3272 static void paste_option_changed(void);
3273 static void compatible_set(void);
3274 #ifdef FEAT_LINEBREAK
3275 static void fill_breakat_flags(void);
3276 #endif
3277 static int opt_strings_flags(char_u *val, char **values, unsigned *flagp, int list);
3278 static int check_opt_strings(char_u *val, char **values, int);
3279 static int check_opt_wim(void);
3280 #ifdef FEAT_LINEBREAK
3281 static int briopt_check(win_T *wp);
3282 #endif
3283 
3284 /*
3285  * Initialize the options, first part.
3286  *
3287  * Called only once from main(), just after creating the first buffer.
3288  * If "clean_arg" is TRUE Vim was started with --clean.
3289  */
3290     void
3291 set_init_1(int clean_arg)
3292 {
3293     char_u	*p;
3294     int		opt_idx;
3295     long_u	n;
3296 
3297 #ifdef FEAT_LANGMAP
3298     langmap_init();
3299 #endif
3300 
3301     /* Be Vi compatible by default */
3302     p_cp = TRUE;
3303 
3304     /* Use POSIX compatibility when $VIM_POSIX is set. */
3305     if (mch_getenv((char_u *)"VIM_POSIX") != NULL)
3306     {
3307 	set_string_default("cpo", (char_u *)CPO_ALL);
3308 	set_string_default("shm", (char_u *)"A");
3309     }
3310 
3311     /*
3312      * Find default value for 'shell' option.
3313      * Don't use it if it is empty.
3314      */
3315     if (((p = mch_getenv((char_u *)"SHELL")) != NULL && *p != NUL)
3316 #if defined(MSWIN)
3317 	    || ((p = mch_getenv((char_u *)"COMSPEC")) != NULL && *p != NUL)
3318 # ifdef WIN3264
3319 	    || ((p = (char_u *)default_shell()) != NULL && *p != NUL)
3320 # endif
3321 #endif
3322 	    )
3323 	set_string_default_esc("sh", p, TRUE);
3324 
3325 #ifdef FEAT_WILDIGN
3326     /*
3327      * Set the default for 'backupskip' to include environment variables for
3328      * temp files.
3329      */
3330     {
3331 # ifdef UNIX
3332 	static char	*(names[4]) = {"", "TMPDIR", "TEMP", "TMP"};
3333 # else
3334 	static char	*(names[3]) = {"TMPDIR", "TEMP", "TMP"};
3335 # endif
3336 	int		len;
3337 	garray_T	ga;
3338 	int		mustfree;
3339 
3340 	ga_init2(&ga, 1, 100);
3341 	for (n = 0; n < (long)(sizeof(names) / sizeof(char *)); ++n)
3342 	{
3343 	    mustfree = FALSE;
3344 # ifdef UNIX
3345 	    if (*names[n] == NUL)
3346 #  ifdef MACOS_X
3347 		p = (char_u *)"/private/tmp";
3348 #  else
3349 		p = (char_u *)"/tmp";
3350 #  endif
3351 	    else
3352 # endif
3353 		p = vim_getenv((char_u *)names[n], &mustfree);
3354 	    if (p != NULL && *p != NUL)
3355 	    {
3356 		/* First time count the NUL, otherwise count the ','. */
3357 		len = (int)STRLEN(p) + 3;
3358 		if (ga_grow(&ga, len) == OK)
3359 		{
3360 		    if (ga.ga_len > 0)
3361 			STRCAT(ga.ga_data, ",");
3362 		    STRCAT(ga.ga_data, p);
3363 		    add_pathsep(ga.ga_data);
3364 		    STRCAT(ga.ga_data, "*");
3365 		    ga.ga_len += len;
3366 		}
3367 	    }
3368 	    if (mustfree)
3369 		vim_free(p);
3370 	}
3371 	if (ga.ga_data != NULL)
3372 	{
3373 	    set_string_default("bsk", ga.ga_data);
3374 	    vim_free(ga.ga_data);
3375 	}
3376     }
3377 #endif
3378 
3379     /*
3380      * 'maxmemtot' and 'maxmem' may have to be adjusted for available memory
3381      */
3382     opt_idx = findoption((char_u *)"maxmemtot");
3383     if (opt_idx >= 0)
3384     {
3385 #if !defined(HAVE_AVAIL_MEM) && !defined(HAVE_TOTAL_MEM)
3386 	if (options[opt_idx].def_val[VI_DEFAULT] == (char_u *)0L)
3387 #endif
3388 	{
3389 #ifdef HAVE_AVAIL_MEM
3390 	    /* Use amount of memory available at this moment. */
3391 	    n = (mch_avail_mem(FALSE) >> 1);
3392 #else
3393 # ifdef HAVE_TOTAL_MEM
3394 	    /* Use amount of memory available to Vim. */
3395 	    n = (mch_total_mem(FALSE) >> 1);
3396 # else
3397 	    n = (0x7fffffff >> 11);
3398 # endif
3399 #endif
3400 	    options[opt_idx].def_val[VI_DEFAULT] = (char_u *)n;
3401 	    opt_idx = findoption((char_u *)"maxmem");
3402 	    if (opt_idx >= 0)
3403 	    {
3404 #if !defined(HAVE_AVAIL_MEM) && !defined(HAVE_TOTAL_MEM)
3405 		if ((long)(long_i)options[opt_idx].def_val[VI_DEFAULT] > (long)n
3406 		  || (long)(long_i)options[opt_idx].def_val[VI_DEFAULT] == 0L)
3407 #endif
3408 		    options[opt_idx].def_val[VI_DEFAULT] = (char_u *)n;
3409 	    }
3410 	}
3411     }
3412 
3413 #ifdef FEAT_SEARCHPATH
3414     {
3415 	char_u	*cdpath;
3416 	char_u	*buf;
3417 	int	i;
3418 	int	j;
3419 	int	mustfree = FALSE;
3420 
3421 	/* Initialize the 'cdpath' option's default value. */
3422 	cdpath = vim_getenv((char_u *)"CDPATH", &mustfree);
3423 	if (cdpath != NULL)
3424 	{
3425 	    buf = alloc((unsigned)((STRLEN(cdpath) << 1) + 2));
3426 	    if (buf != NULL)
3427 	    {
3428 		buf[0] = ',';	    /* start with ",", current dir first */
3429 		j = 1;
3430 		for (i = 0; cdpath[i] != NUL; ++i)
3431 		{
3432 		    if (vim_ispathlistsep(cdpath[i]))
3433 			buf[j++] = ',';
3434 		    else
3435 		    {
3436 			if (cdpath[i] == ' ' || cdpath[i] == ',')
3437 			    buf[j++] = '\\';
3438 			buf[j++] = cdpath[i];
3439 		    }
3440 		}
3441 		buf[j] = NUL;
3442 		opt_idx = findoption((char_u *)"cdpath");
3443 		if (opt_idx >= 0)
3444 		{
3445 		    options[opt_idx].def_val[VI_DEFAULT] = buf;
3446 		    options[opt_idx].flags |= P_DEF_ALLOCED;
3447 		}
3448 		else
3449 		    vim_free(buf); /* cannot happen */
3450 	    }
3451 	    if (mustfree)
3452 		vim_free(cdpath);
3453 	}
3454     }
3455 #endif
3456 
3457 #if defined(FEAT_POSTSCRIPT) && (defined(MSWIN) || defined(VMS) || defined(EBCDIC) || defined(MAC) || defined(hpux))
3458     /* Set print encoding on platforms that don't default to latin1 */
3459     set_string_default("penc",
3460 # if defined(MSWIN)
3461 		       (char_u *)"cp1252"
3462 # else
3463 #  ifdef VMS
3464 		       (char_u *)"dec-mcs"
3465 #  else
3466 #   ifdef EBCDIC
3467 		       (char_u *)"ebcdic-uk"
3468 #   else
3469 #    ifdef MAC
3470 		       (char_u *)"mac-roman"
3471 #    else /* HPUX */
3472 		       (char_u *)"hp-roman8"
3473 #    endif
3474 #   endif
3475 #  endif
3476 # endif
3477 		       );
3478 #endif
3479 
3480 #ifdef FEAT_POSTSCRIPT
3481     /* 'printexpr' must be allocated to be able to evaluate it. */
3482     set_string_default("pexpr",
3483 # if defined(MSWIN)
3484 	    (char_u *)"system('copy' . ' ' . v:fname_in . (&printdevice == '' ? ' LPT1:' : (' \"' . &printdevice . '\"'))) . delete(v:fname_in)"
3485 # else
3486 #  ifdef VMS
3487 	    (char_u *)"system('print/delete' . (&printdevice == '' ? '' : ' /queue=' . &printdevice) . ' ' . v:fname_in)"
3488 
3489 #  else
3490 	    (char_u *)"system('lpr' . (&printdevice == '' ? '' : ' -P' . &printdevice) . ' ' . v:fname_in) . delete(v:fname_in) + v:shell_error"
3491 #  endif
3492 # endif
3493 	    );
3494 #endif
3495 
3496     /*
3497      * Set all the options (except the terminal options) to their default
3498      * value.  Also set the global value for local options.
3499      */
3500     set_options_default(0);
3501 
3502 #ifdef CLEAN_RUNTIMEPATH
3503     if (clean_arg)
3504     {
3505 	opt_idx = findoption((char_u *)"runtimepath");
3506 	if (opt_idx >= 0)
3507 	{
3508 	    options[opt_idx].def_val[VI_DEFAULT] = (char_u *)CLEAN_RUNTIMEPATH;
3509 	    p_rtp = (char_u *)CLEAN_RUNTIMEPATH;
3510 	}
3511 	opt_idx = findoption((char_u *)"packpath");
3512 	if (opt_idx >= 0)
3513 	{
3514 	    options[opt_idx].def_val[VI_DEFAULT] = (char_u *)CLEAN_RUNTIMEPATH;
3515 	    p_pp = (char_u *)CLEAN_RUNTIMEPATH;
3516 	}
3517     }
3518 #endif
3519 
3520 #ifdef FEAT_GUI
3521     if (found_reverse_arg)
3522 	set_option_value((char_u *)"bg", 0L, (char_u *)"dark", 0);
3523 #endif
3524 
3525     curbuf->b_p_initialized = TRUE;
3526     curbuf->b_p_ar = -1;	/* no local 'autoread' value */
3527     curbuf->b_p_ul = NO_LOCAL_UNDOLEVEL;
3528     check_buf_options(curbuf);
3529     check_win_options(curwin);
3530     check_options();
3531 
3532     /* Must be before option_expand(), because that one needs vim_isIDc() */
3533     didset_options();
3534 
3535 #ifdef FEAT_SPELL
3536     /* Use the current chartab for the generic chartab. This is not in
3537      * didset_options() because it only depends on 'encoding'. */
3538     init_spell_chartab();
3539 #endif
3540 
3541     /*
3542      * Expand environment variables and things like "~" for the defaults.
3543      * If option_expand() returns non-NULL the variable is expanded.  This can
3544      * only happen for non-indirect options.
3545      * Also set the default to the expanded value, so ":set" does not list
3546      * them.
3547      * Don't set the P_ALLOCED flag, because we don't want to free the
3548      * default.
3549      */
3550     for (opt_idx = 0; !istermoption(&options[opt_idx]); opt_idx++)
3551     {
3552 	if ((options[opt_idx].flags & P_GETTEXT)
3553 					      && options[opt_idx].var != NULL)
3554 	    p = (char_u *)_(*(char **)options[opt_idx].var);
3555 	else
3556 	    p = option_expand(opt_idx, NULL);
3557 	if (p != NULL && (p = vim_strsave(p)) != NULL)
3558 	{
3559 	    *(char_u **)options[opt_idx].var = p;
3560 	    /* VIMEXP
3561 	     * Defaults for all expanded options are currently the same for Vi
3562 	     * and Vim.  When this changes, add some code here!  Also need to
3563 	     * split P_DEF_ALLOCED in two.
3564 	     */
3565 	    if (options[opt_idx].flags & P_DEF_ALLOCED)
3566 		vim_free(options[opt_idx].def_val[VI_DEFAULT]);
3567 	    options[opt_idx].def_val[VI_DEFAULT] = p;
3568 	    options[opt_idx].flags |= P_DEF_ALLOCED;
3569 	}
3570     }
3571 
3572     save_file_ff(curbuf);	/* Buffer is unchanged */
3573 
3574 #if defined(FEAT_ARABIC)
3575     /* Detect use of mlterm.
3576      * Mlterm is a terminal emulator akin to xterm that has some special
3577      * abilities (bidi namely).
3578      * NOTE: mlterm's author is being asked to 'set' a variable
3579      *       instead of an environment variable due to inheritance.
3580      */
3581     if (mch_getenv((char_u *)"MLTERM") != NULL)
3582 	set_option_value((char_u *)"tbidi", 1L, NULL, 0);
3583 #endif
3584 
3585     didset_options2();
3586 
3587 # if defined(WIN3264) && defined(FEAT_GETTEXT)
3588     /*
3589      * If $LANG isn't set, try to get a good value for it.  This makes the
3590      * right language be used automatically.  Don't do this for English.
3591      */
3592     if (mch_getenv((char_u *)"LANG") == NULL)
3593     {
3594 	char	buf[20];
3595 
3596 	/* Could use LOCALE_SISO639LANGNAME, but it's not in Win95.
3597 	 * LOCALE_SABBREVLANGNAME gives us three letters, like "enu", we use
3598 	 * only the first two. */
3599 	n = GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SABBREVLANGNAME,
3600 							     (LPTSTR)buf, 20);
3601 	if (n >= 2 && STRNICMP(buf, "en", 2) != 0)
3602 	{
3603 	    /* There are a few exceptions (probably more) */
3604 	    if (STRNICMP(buf, "cht", 3) == 0 || STRNICMP(buf, "zht", 3) == 0)
3605 		STRCPY(buf, "zh_TW");
3606 	    else if (STRNICMP(buf, "chs", 3) == 0
3607 					      || STRNICMP(buf, "zhc", 3) == 0)
3608 		STRCPY(buf, "zh_CN");
3609 	    else if (STRNICMP(buf, "jp", 2) == 0)
3610 		STRCPY(buf, "ja");
3611 	    else
3612 		buf[2] = NUL;		/* truncate to two-letter code */
3613 	    vim_setenv((char_u *)"LANG", (char_u *)buf);
3614 	}
3615     }
3616 # else
3617 #  ifdef MACOS_CONVERT
3618     /* Moved to os_mac_conv.c to avoid dependency problems. */
3619     mac_lang_init();
3620 #  endif
3621 # endif
3622 
3623     /* enc_locale() will try to find the encoding of the current locale. */
3624     p = enc_locale();
3625     if (p != NULL)
3626     {
3627 	char_u *save_enc;
3628 
3629 	/* Try setting 'encoding' and check if the value is valid.
3630 	 * If not, go back to the default "latin1". */
3631 	save_enc = p_enc;
3632 	p_enc = p;
3633 	if (STRCMP(p_enc, "gb18030") == 0)
3634 	{
3635 	    /* We don't support "gb18030", but "cp936" is a good substitute
3636 	     * for practical purposes, thus use that.  It's not an alias to
3637 	     * still support conversion between gb18030 and utf-8. */
3638 	    p_enc = vim_strsave((char_u *)"cp936");
3639 	    vim_free(p);
3640 	}
3641 	if (mb_init() == NULL)
3642 	{
3643 	    opt_idx = findoption((char_u *)"encoding");
3644 	    if (opt_idx >= 0)
3645 	    {
3646 		options[opt_idx].def_val[VI_DEFAULT] = p_enc;
3647 		options[opt_idx].flags |= P_DEF_ALLOCED;
3648 	    }
3649 
3650 #if defined(MSWIN) || defined(MACOS_X) || defined(VMS)
3651 	    if (STRCMP(p_enc, "latin1") == 0 || enc_utf8)
3652 	    {
3653 		/* Adjust the default for 'isprint' and 'iskeyword' to match
3654 		 * latin1.  Also set the defaults for when 'nocompatible' is
3655 		 * set. */
3656 		set_string_option_direct((char_u *)"isp", -1,
3657 					      ISP_LATIN1, OPT_FREE, SID_NONE);
3658 		set_string_option_direct((char_u *)"isk", -1,
3659 					      ISK_LATIN1, OPT_FREE, SID_NONE);
3660 		opt_idx = findoption((char_u *)"isp");
3661 		if (opt_idx >= 0)
3662 		    options[opt_idx].def_val[VIM_DEFAULT] = ISP_LATIN1;
3663 		opt_idx = findoption((char_u *)"isk");
3664 		if (opt_idx >= 0)
3665 		    options[opt_idx].def_val[VIM_DEFAULT] = ISK_LATIN1;
3666 		(void)init_chartab();
3667 	    }
3668 #endif
3669 
3670 #if defined(WIN3264) && !defined(FEAT_GUI)
3671 	    /* Win32 console: When GetACP() returns a different value from
3672 	     * GetConsoleCP() set 'termencoding'. */
3673 	    if (GetACP() != GetConsoleCP())
3674 	    {
3675 		char	buf[50];
3676 
3677 		/* Win32 console: In ConPTY, GetConsoleCP() returns zero.
3678 		 * Use an alternative value. */
3679 		if (GetConsoleCP() == 0)
3680 		    sprintf(buf, "cp%ld", (long)GetACP());
3681 		else
3682 		    sprintf(buf, "cp%ld", (long)GetConsoleCP());
3683 		p_tenc = vim_strsave((char_u *)buf);
3684 		if (p_tenc != NULL)
3685 		{
3686 		    opt_idx = findoption((char_u *)"termencoding");
3687 		    if (opt_idx >= 0)
3688 		    {
3689 			options[opt_idx].def_val[VI_DEFAULT] = p_tenc;
3690 			options[opt_idx].flags |= P_DEF_ALLOCED;
3691 		    }
3692 		    convert_setup(&input_conv, p_tenc, p_enc);
3693 		    convert_setup(&output_conv, p_enc, p_tenc);
3694 		}
3695 		else
3696 		    p_tenc = empty_option;
3697 	    }
3698 #endif
3699 #if defined(WIN3264)
3700 	    /* $HOME may have characters in active code page. */
3701 	    init_homedir();
3702 #endif
3703 	}
3704 	else
3705 	{
3706 	    vim_free(p_enc);
3707 	    p_enc = save_enc;
3708 	}
3709     }
3710 
3711 #ifdef FEAT_MULTI_LANG
3712     /* Set the default for 'helplang'. */
3713     set_helplang_default(get_mess_lang());
3714 #endif
3715 }
3716 
3717 /*
3718  * Set an option to its default value.
3719  * This does not take care of side effects!
3720  */
3721     static void
3722 set_option_default(
3723     int		opt_idx,
3724     int		opt_flags,	/* OPT_FREE, OPT_LOCAL and/or OPT_GLOBAL */
3725     int		compatible)	/* use Vi default value */
3726 {
3727     char_u	*varp;		/* pointer to variable for current option */
3728     int		dvi;		/* index in def_val[] */
3729     long_u	flags;
3730     long_u	*flagsp;
3731     int		both = (opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0;
3732 
3733     varp = get_varp_scope(&(options[opt_idx]), both ? OPT_LOCAL : opt_flags);
3734     flags = options[opt_idx].flags;
3735     if (varp != NULL)	    /* skip hidden option, nothing to do for it */
3736     {
3737 	dvi = ((flags & P_VI_DEF) || compatible) ? VI_DEFAULT : VIM_DEFAULT;
3738 	if (flags & P_STRING)
3739 	{
3740 	    /* Use set_string_option_direct() for local options to handle
3741 	     * freeing and allocating the value. */
3742 	    if (options[opt_idx].indir != PV_NONE)
3743 		set_string_option_direct(NULL, opt_idx,
3744 				 options[opt_idx].def_val[dvi], opt_flags, 0);
3745 	    else
3746 	    {
3747 		if ((opt_flags & OPT_FREE) && (flags & P_ALLOCED))
3748 		    free_string_option(*(char_u **)(varp));
3749 		*(char_u **)varp = options[opt_idx].def_val[dvi];
3750 		options[opt_idx].flags &= ~P_ALLOCED;
3751 	    }
3752 	}
3753 	else if (flags & P_NUM)
3754 	{
3755 	    if (options[opt_idx].indir == PV_SCROLL)
3756 		win_comp_scroll(curwin);
3757 	    else
3758 	    {
3759 		long def_val = (long)(long_i)options[opt_idx].def_val[dvi];
3760 
3761 		if ((long *)varp == &curwin->w_p_so
3762 			|| (long *)varp == &curwin->w_p_siso)
3763 		    // 'scrolloff' and 'sidescrolloff' local values have a
3764 		    // different default value than the global default.
3765 		    *(long *)varp = -1;
3766 		else
3767 		    *(long *)varp = def_val;
3768 		/* May also set global value for local option. */
3769 		if (both)
3770 		    *(long *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) =
3771 								def_val;
3772 	    }
3773 	}
3774 	else	/* P_BOOL */
3775 	{
3776 	    /* the cast to long is required for Manx C, long_i is needed for
3777 	     * MSVC */
3778 	    *(int *)varp = (int)(long)(long_i)options[opt_idx].def_val[dvi];
3779 #ifdef UNIX
3780 	    /* 'modeline' defaults to off for root */
3781 	    if (options[opt_idx].indir == PV_ML && getuid() == ROOT_UID)
3782 		*(int *)varp = FALSE;
3783 #endif
3784 	    /* May also set global value for local option. */
3785 	    if (both)
3786 		*(int *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) =
3787 								*(int *)varp;
3788 	}
3789 
3790 	/* The default value is not insecure. */
3791 	flagsp = insecure_flag(opt_idx, opt_flags);
3792 	*flagsp = *flagsp & ~P_INSECURE;
3793     }
3794 
3795 #ifdef FEAT_EVAL
3796     set_option_sctx_idx(opt_idx, opt_flags, current_sctx);
3797 #endif
3798 }
3799 
3800 /*
3801  * Set all options (except terminal options) to their default value.
3802  * When "opt_flags" is non-zero skip 'encoding'.
3803  */
3804     static void
3805 set_options_default(
3806     int		opt_flags)	/* OPT_FREE, OPT_LOCAL and/or OPT_GLOBAL */
3807 {
3808     int		i;
3809     win_T	*wp;
3810     tabpage_T	*tp;
3811 
3812     for (i = 0; !istermoption(&options[i]); i++)
3813 	if (!(options[i].flags & P_NODEFAULT)
3814 		&& (opt_flags == 0
3815 		    || (options[i].var != (char_u *)&p_enc
3816 # if defined(FEAT_CRYPT)
3817 			&& options[i].var != (char_u *)&p_cm
3818 			&& options[i].var != (char_u *)&p_key
3819 # endif
3820 			)))
3821 	    set_option_default(i, opt_flags, p_cp);
3822 
3823     /* The 'scroll' option must be computed for all windows. */
3824     FOR_ALL_TAB_WINDOWS(tp, wp)
3825 	win_comp_scroll(wp);
3826 #ifdef FEAT_CINDENT
3827     parse_cino(curbuf);
3828 #endif
3829 }
3830 
3831 /*
3832  * Set the Vi-default value of a string option.
3833  * Used for 'sh', 'backupskip' and 'term'.
3834  * When "escape" is TRUE escape spaces with a backslash.
3835  */
3836     static void
3837 set_string_default_esc(char *name, char_u *val, int escape)
3838 {
3839     char_u	*p;
3840     int		opt_idx;
3841 
3842     if (escape && vim_strchr(val, ' ') != NULL)
3843 	p = vim_strsave_escaped(val, (char_u *)" ");
3844     else
3845 	p = vim_strsave(val);
3846     if (p != NULL)		/* we don't want a NULL */
3847     {
3848 	opt_idx = findoption((char_u *)name);
3849 	if (opt_idx >= 0)
3850 	{
3851 	    if (options[opt_idx].flags & P_DEF_ALLOCED)
3852 		vim_free(options[opt_idx].def_val[VI_DEFAULT]);
3853 	    options[opt_idx].def_val[VI_DEFAULT] = p;
3854 	    options[opt_idx].flags |= P_DEF_ALLOCED;
3855 	}
3856     }
3857 }
3858 
3859     void
3860 set_string_default(char *name, char_u *val)
3861 {
3862     set_string_default_esc(name, val, FALSE);
3863 }
3864 
3865 /*
3866  * Set the Vi-default value of a number option.
3867  * Used for 'lines' and 'columns'.
3868  */
3869     void
3870 set_number_default(char *name, long val)
3871 {
3872     int		opt_idx;
3873 
3874     opt_idx = findoption((char_u *)name);
3875     if (opt_idx >= 0)
3876 	options[opt_idx].def_val[VI_DEFAULT] = (char_u *)(long_i)val;
3877 }
3878 
3879 #if defined(EXITFREE) || defined(PROTO)
3880 /*
3881  * Free all options.
3882  */
3883     void
3884 free_all_options(void)
3885 {
3886     int		i;
3887 
3888     for (i = 0; !istermoption(&options[i]); i++)
3889     {
3890 	if (options[i].indir == PV_NONE)
3891 	{
3892 	    /* global option: free value and default value. */
3893 	    if ((options[i].flags & P_ALLOCED) && options[i].var != NULL)
3894 		free_string_option(*(char_u **)options[i].var);
3895 	    if (options[i].flags & P_DEF_ALLOCED)
3896 		free_string_option(options[i].def_val[VI_DEFAULT]);
3897 	}
3898 	else if (options[i].var != VAR_WIN
3899 		&& (options[i].flags & P_STRING))
3900 	    /* buffer-local option: free global value */
3901 	    free_string_option(*(char_u **)options[i].var);
3902     }
3903 }
3904 #endif
3905 
3906 
3907 /*
3908  * Initialize the options, part two: After getting Rows and Columns and
3909  * setting 'term'.
3910  */
3911     void
3912 set_init_2(void)
3913 {
3914     int		idx;
3915 
3916     /*
3917      * 'scroll' defaults to half the window height. The stored default is zero,
3918      * which results in the actual value computed from the window height.
3919      */
3920     idx = findoption((char_u *)"scroll");
3921     if (idx >= 0 && !(options[idx].flags & P_WAS_SET))
3922 	set_option_default(idx, OPT_LOCAL, p_cp);
3923     comp_col();
3924 
3925     /*
3926      * 'window' is only for backwards compatibility with Vi.
3927      * Default is Rows - 1.
3928      */
3929     if (!option_was_set((char_u *)"window"))
3930 	p_window = Rows - 1;
3931     set_number_default("window", Rows - 1);
3932 
3933     /* For DOS console the default is always black. */
3934 #if !((defined(WIN3264)) && !defined(FEAT_GUI))
3935     /*
3936      * If 'background' wasn't set by the user, try guessing the value,
3937      * depending on the terminal name.  Only need to check for terminals
3938      * with a dark background, that can handle color.
3939      */
3940     idx = findoption((char_u *)"bg");
3941     if (idx >= 0 && !(options[idx].flags & P_WAS_SET)
3942 						 && *term_bg_default() == 'd')
3943     {
3944 	set_string_option_direct(NULL, idx, (char_u *)"dark", OPT_FREE, 0);
3945 	/* don't mark it as set, when starting the GUI it may be
3946 	 * changed again */
3947 	options[idx].flags &= ~P_WAS_SET;
3948     }
3949 #endif
3950 
3951 #ifdef CURSOR_SHAPE
3952     parse_shape_opt(SHAPE_CURSOR); /* set cursor shapes from 'guicursor' */
3953 #endif
3954 #ifdef FEAT_MOUSESHAPE
3955     parse_shape_opt(SHAPE_MOUSE);  /* set mouse shapes from 'mouseshape' */
3956 #endif
3957 #ifdef FEAT_PRINTER
3958     (void)parse_printoptions();	    /* parse 'printoptions' default value */
3959 #endif
3960 }
3961 
3962 /*
3963  * Return "dark" or "light" depending on the kind of terminal.
3964  * This is just guessing!  Recognized are:
3965  * "linux"	    Linux console
3966  * "screen.linux"   Linux console with screen
3967  * "cygwin.*"	    Cygwin shell
3968  * "putty.*"	    Putty program
3969  * We also check the COLORFGBG environment variable, which is set by
3970  * rxvt and derivatives. This variable contains either two or three
3971  * values separated by semicolons; we want the last value in either
3972  * case. If this value is 0-6 or 8, our background is dark.
3973  */
3974     static char_u *
3975 term_bg_default(void)
3976 {
3977 #if defined(WIN3264)
3978     /* DOS console is nearly always black */
3979     return (char_u *)"dark";
3980 #else
3981     char_u	*p;
3982 
3983     if (STRCMP(T_NAME, "linux") == 0
3984 	    || STRCMP(T_NAME, "screen.linux") == 0
3985 	    || STRNCMP(T_NAME, "cygwin", 6) == 0
3986 	    || STRNCMP(T_NAME, "putty", 5) == 0
3987 	    || ((p = mch_getenv((char_u *)"COLORFGBG")) != NULL
3988 		&& (p = vim_strrchr(p, ';')) != NULL
3989 		&& ((p[1] >= '0' && p[1] <= '6') || p[1] == '8')
3990 		&& p[2] == NUL))
3991 	return (char_u *)"dark";
3992     return (char_u *)"light";
3993 #endif
3994 }
3995 
3996 /*
3997  * Initialize the options, part three: After reading the .vimrc
3998  */
3999     void
4000 set_init_3(void)
4001 {
4002 #if defined(UNIX) || defined(WIN3264)
4003 /*
4004  * Set 'shellpipe' and 'shellredir', depending on the 'shell' option.
4005  * This is done after other initializations, where 'shell' might have been
4006  * set, but only if they have not been set before.
4007  */
4008     char_u  *p;
4009     int	    idx_srr;
4010     int	    do_srr;
4011 # ifdef FEAT_QUICKFIX
4012     int	    idx_sp;
4013     int	    do_sp;
4014 # endif
4015 
4016     idx_srr = findoption((char_u *)"srr");
4017     if (idx_srr < 0)
4018 	do_srr = FALSE;
4019     else
4020 	do_srr = !(options[idx_srr].flags & P_WAS_SET);
4021 # ifdef FEAT_QUICKFIX
4022     idx_sp = findoption((char_u *)"sp");
4023     if (idx_sp < 0)
4024 	do_sp = FALSE;
4025     else
4026 	do_sp = !(options[idx_sp].flags & P_WAS_SET);
4027 # endif
4028     p = get_isolated_shell_name();
4029     if (p != NULL)
4030     {
4031 	/*
4032 	 * Default for p_sp is "| tee", for p_srr is ">".
4033 	 * For known shells it is changed here to include stderr.
4034 	 */
4035 	if (	   fnamecmp(p, "csh") == 0
4036 		|| fnamecmp(p, "tcsh") == 0
4037 # if defined(WIN3264)	/* also check with .exe extension */
4038 		|| fnamecmp(p, "csh.exe") == 0
4039 		|| fnamecmp(p, "tcsh.exe") == 0
4040 # endif
4041 	   )
4042 	{
4043 # if defined(FEAT_QUICKFIX)
4044 	    if (do_sp)
4045 	    {
4046 #  ifdef WIN3264
4047 		p_sp = (char_u *)">&";
4048 #  else
4049 		p_sp = (char_u *)"|& tee";
4050 #  endif
4051 		options[idx_sp].def_val[VI_DEFAULT] = p_sp;
4052 	    }
4053 # endif
4054 	    if (do_srr)
4055 	    {
4056 		p_srr = (char_u *)">&";
4057 		options[idx_srr].def_val[VI_DEFAULT] = p_srr;
4058 	    }
4059 	}
4060 	else
4061 	    /* Always use bourne shell style redirection if we reach this */
4062 	    if (       fnamecmp(p, "sh") == 0
4063 		    || fnamecmp(p, "ksh") == 0
4064 		    || fnamecmp(p, "mksh") == 0
4065 		    || fnamecmp(p, "pdksh") == 0
4066 		    || fnamecmp(p, "zsh") == 0
4067 		    || fnamecmp(p, "zsh-beta") == 0
4068 		    || fnamecmp(p, "bash") == 0
4069 		    || fnamecmp(p, "fish") == 0
4070 # ifdef WIN3264
4071 		    || fnamecmp(p, "cmd") == 0
4072 		    || fnamecmp(p, "sh.exe") == 0
4073 		    || fnamecmp(p, "ksh.exe") == 0
4074 		    || fnamecmp(p, "mksh.exe") == 0
4075 		    || fnamecmp(p, "pdksh.exe") == 0
4076 		    || fnamecmp(p, "zsh.exe") == 0
4077 		    || fnamecmp(p, "zsh-beta.exe") == 0
4078 		    || fnamecmp(p, "bash.exe") == 0
4079 		    || fnamecmp(p, "cmd.exe") == 0
4080 # endif
4081 		    )
4082 	    {
4083 # if defined(FEAT_QUICKFIX)
4084 		if (do_sp)
4085 		{
4086 #  ifdef WIN3264
4087 		    p_sp = (char_u *)">%s 2>&1";
4088 #  else
4089 		    p_sp = (char_u *)"2>&1| tee";
4090 #  endif
4091 		    options[idx_sp].def_val[VI_DEFAULT] = p_sp;
4092 		}
4093 # endif
4094 		if (do_srr)
4095 		{
4096 		    p_srr = (char_u *)">%s 2>&1";
4097 		    options[idx_srr].def_val[VI_DEFAULT] = p_srr;
4098 		}
4099 	    }
4100 	vim_free(p);
4101     }
4102 #endif
4103 
4104 #if defined(WIN3264)
4105     /*
4106      * Set 'shellcmdflag', 'shellxquote', and 'shellquote' depending on the
4107      * 'shell' option.
4108      * This is done after other initializations, where 'shell' might have been
4109      * set, but only if they have not been set before.  Default for p_shcf is
4110      * "/c", for p_shq is "".  For "sh" like  shells it is changed here to
4111      * "-c" and "\"".  And for Win32 we need to set p_sxq instead.
4112      */
4113     if (strstr((char *)gettail(p_sh), "sh") != NULL)
4114     {
4115 	int	idx3;
4116 
4117 	idx3 = findoption((char_u *)"shcf");
4118 	if (idx3 >= 0 && !(options[idx3].flags & P_WAS_SET))
4119 	{
4120 	    p_shcf = (char_u *)"-c";
4121 	    options[idx3].def_val[VI_DEFAULT] = p_shcf;
4122 	}
4123 
4124 	/* Somehow Win32 requires the quotes around the redirection too */
4125 	idx3 = findoption((char_u *)"sxq");
4126 	if (idx3 >= 0 && !(options[idx3].flags & P_WAS_SET))
4127 	{
4128 	    p_sxq = (char_u *)"\"";
4129 	    options[idx3].def_val[VI_DEFAULT] = p_sxq;
4130 	}
4131     }
4132     else if (strstr((char *)gettail(p_sh), "cmd.exe") != NULL)
4133     {
4134 	int	idx3;
4135 
4136 	/*
4137 	 * cmd.exe on Windows will strip the first and last double quote given
4138 	 * on the command line, e.g. most of the time things like:
4139 	 *   cmd /c "my path/to/echo" "my args to echo"
4140 	 * become:
4141 	 *   my path/to/echo" "my args to echo
4142 	 * when executed.
4143 	 *
4144 	 * To avoid this, set shellxquote to surround the command in
4145 	 * parenthesis.  This appears to make most commands work, without
4146 	 * breaking commands that worked previously, such as
4147 	 * '"path with spaces/cmd" "a&b"'.
4148 	 */
4149 	idx3 = findoption((char_u *)"sxq");
4150 	if (idx3 >= 0 && !(options[idx3].flags & P_WAS_SET))
4151 	{
4152 	    p_sxq = (char_u *)"(";
4153 	    options[idx3].def_val[VI_DEFAULT] = p_sxq;
4154 	}
4155 
4156 	idx3 = findoption((char_u *)"shcf");
4157 	if (idx3 >= 0 && !(options[idx3].flags & P_WAS_SET))
4158 	{
4159 	    p_shcf = (char_u *)"/c";
4160 	    options[idx3].def_val[VI_DEFAULT] = p_shcf;
4161 	}
4162     }
4163 #endif
4164 
4165     if (BUFEMPTY())
4166     {
4167 	int idx_ffs = findoption((char_u *)"ffs");
4168 
4169 	/* Apply the first entry of 'fileformats' to the initial buffer. */
4170 	if (idx_ffs >= 0 && (options[idx_ffs].flags & P_WAS_SET))
4171 	    set_fileformat(default_fileformat(), OPT_LOCAL);
4172     }
4173 
4174 #ifdef FEAT_TITLE
4175     set_title_defaults();
4176 #endif
4177 }
4178 
4179 #if defined(FEAT_MULTI_LANG) || defined(PROTO)
4180 /*
4181  * When 'helplang' is still at its default value, set it to "lang".
4182  * Only the first two characters of "lang" are used.
4183  */
4184     void
4185 set_helplang_default(char_u *lang)
4186 {
4187     int		idx;
4188 
4189     if (lang == NULL || STRLEN(lang) < 2)	/* safety check */
4190 	return;
4191     idx = findoption((char_u *)"hlg");
4192     if (idx >= 0 && !(options[idx].flags & P_WAS_SET))
4193     {
4194 	if (options[idx].flags & P_ALLOCED)
4195 	    free_string_option(p_hlg);
4196 	p_hlg = vim_strsave(lang);
4197 	if (p_hlg == NULL)
4198 	    p_hlg = empty_option;
4199 	else
4200 	{
4201 	    // zh_CN becomes "cn", zh_TW becomes "tw"
4202 	    if (STRNICMP(p_hlg, "zh_", 3) == 0 && STRLEN(p_hlg) >= 5)
4203 	    {
4204 		p_hlg[0] = TOLOWER_ASC(p_hlg[3]);
4205 		p_hlg[1] = TOLOWER_ASC(p_hlg[4]);
4206 	    }
4207 	    // any C like setting, such as C.UTF-8, becomes "en"
4208 	    else if (STRLEN(p_hlg) >= 1 && *p_hlg == 'C')
4209 	    {
4210 		p_hlg[0] = 'e';
4211 		p_hlg[1] = 'n';
4212 	    }
4213 	    p_hlg[2] = NUL;
4214 	}
4215 	options[idx].flags |= P_ALLOCED;
4216     }
4217 }
4218 #endif
4219 
4220 #ifdef FEAT_GUI
4221     static char_u *
4222 gui_bg_default(void)
4223 {
4224     if (gui_get_lightness(gui.back_pixel) < 127)
4225 	return (char_u *)"dark";
4226     return (char_u *)"light";
4227 }
4228 
4229 /*
4230  * Option initializations that can only be done after opening the GUI window.
4231  */
4232     void
4233 init_gui_options(void)
4234 {
4235     /* Set the 'background' option according to the lightness of the
4236      * background color, unless the user has set it already. */
4237     if (!option_was_set((char_u *)"bg") && STRCMP(p_bg, gui_bg_default()) != 0)
4238     {
4239 	set_option_value((char_u *)"bg", 0L, gui_bg_default(), 0);
4240 	highlight_changed();
4241     }
4242 }
4243 #endif
4244 
4245 #ifdef FEAT_TITLE
4246 /*
4247  * 'title' and 'icon' only default to true if they have not been set or reset
4248  * in .vimrc and we can read the old value.
4249  * When 'title' and 'icon' have been reset in .vimrc, we won't even check if
4250  * they can be reset.  This reduces startup time when using X on a remote
4251  * machine.
4252  */
4253     void
4254 set_title_defaults(void)
4255 {
4256     int	    idx1;
4257     long    val;
4258 
4259     /*
4260      * If GUI is (going to be) used, we can always set the window title and
4261      * icon name.  Saves a bit of time, because the X11 display server does
4262      * not need to be contacted.
4263      */
4264     idx1 = findoption((char_u *)"title");
4265     if (idx1 >= 0 && !(options[idx1].flags & P_WAS_SET))
4266     {
4267 #ifdef FEAT_GUI
4268 	if (gui.starting || gui.in_use)
4269 	    val = TRUE;
4270 	else
4271 #endif
4272 	    val = mch_can_restore_title();
4273 	options[idx1].def_val[VI_DEFAULT] = (char_u *)(long_i)val;
4274 	p_title = val;
4275     }
4276     idx1 = findoption((char_u *)"icon");
4277     if (idx1 >= 0 && !(options[idx1].flags & P_WAS_SET))
4278     {
4279 #ifdef FEAT_GUI
4280 	if (gui.starting || gui.in_use)
4281 	    val = TRUE;
4282 	else
4283 #endif
4284 	    val = mch_can_restore_icon();
4285 	options[idx1].def_val[VI_DEFAULT] = (char_u *)(long_i)val;
4286 	p_icon = val;
4287     }
4288 }
4289 #endif
4290 
4291 #if defined(FEAT_EVAL)
4292     static void
4293 trigger_optionsset_string(
4294 	int	opt_idx,
4295 	int	opt_flags,
4296 	char_u *oldval,
4297 	char_u *newval)
4298 {
4299     // Don't do this recursively.
4300     if (oldval != NULL && newval != NULL
4301 				    && *get_vim_var_str(VV_OPTION_TYPE) == NUL)
4302     {
4303 	char_u buf_type[7];
4304 
4305 	sprintf((char *)buf_type, "%s",
4306 	    (opt_flags & OPT_LOCAL) ? "local" : "global");
4307 	set_vim_var_string(VV_OPTION_OLD, oldval, -1);
4308 	set_vim_var_string(VV_OPTION_NEW, newval, -1);
4309 	set_vim_var_string(VV_OPTION_TYPE, buf_type, -1);
4310 	apply_autocmds(EVENT_OPTIONSET,
4311 		       (char_u *)options[opt_idx].fullname, NULL, FALSE, NULL);
4312 	reset_v_option_vars();
4313     }
4314 }
4315 #endif
4316 
4317 /*
4318  * Parse 'arg' for option settings.
4319  *
4320  * 'arg' may be IObuff, but only when no errors can be present and option
4321  * does not need to be expanded with option_expand().
4322  * "opt_flags":
4323  * 0 for ":set"
4324  * OPT_GLOBAL   for ":setglobal"
4325  * OPT_LOCAL    for ":setlocal" and a modeline
4326  * OPT_MODELINE for a modeline
4327  * OPT_WINONLY  to only set window-local options
4328  * OPT_NOWIN	to skip setting window-local options
4329  *
4330  * returns FAIL if an error is detected, OK otherwise
4331  */
4332     int
4333 do_set(
4334     char_u	*arg,		/* option string (may be written to!) */
4335     int		opt_flags)
4336 {
4337     int		opt_idx;
4338     char	*errmsg;
4339     char	errbuf[80];
4340     char_u	*startarg;
4341     int		prefix;	/* 1: nothing, 0: "no", 2: "inv" in front of name */
4342     int		nextchar;	    /* next non-white char after option name */
4343     int		afterchar;	    /* character just after option name */
4344     int		len;
4345     int		i;
4346     varnumber_T	value;
4347     int		key;
4348     long_u	flags;		    /* flags for current option */
4349     char_u	*varp = NULL;	    /* pointer to variable for current option */
4350     int		did_show = FALSE;   /* already showed one value */
4351     int		adding;		    /* "opt+=arg" */
4352     int		prepending;	    /* "opt^=arg" */
4353     int		removing;	    /* "opt-=arg" */
4354     int		cp_val = 0;
4355     char_u	key_name[2];
4356 
4357     if (*arg == NUL)
4358     {
4359 	showoptions(0, opt_flags);
4360 	did_show = TRUE;
4361 	goto theend;
4362     }
4363 
4364     while (*arg != NUL)		/* loop to process all options */
4365     {
4366 	errmsg = NULL;
4367 	startarg = arg;		/* remember for error message */
4368 
4369 	if (STRNCMP(arg, "all", 3) == 0 && !isalpha(arg[3])
4370 						&& !(opt_flags & OPT_MODELINE))
4371 	{
4372 	    /*
4373 	     * ":set all"  show all options.
4374 	     * ":set all&" set all options to their default value.
4375 	     */
4376 	    arg += 3;
4377 	    if (*arg == '&')
4378 	    {
4379 		++arg;
4380 		/* Only for :set command set global value of local options. */
4381 		set_options_default(OPT_FREE | opt_flags);
4382 		didset_options();
4383 		didset_options2();
4384 		redraw_all_later(CLEAR);
4385 	    }
4386 	    else
4387 	    {
4388 		showoptions(1, opt_flags);
4389 		did_show = TRUE;
4390 	    }
4391 	}
4392 	else if (STRNCMP(arg, "termcap", 7) == 0 && !(opt_flags & OPT_MODELINE))
4393 	{
4394 	    showoptions(2, opt_flags);
4395 	    show_termcodes();
4396 	    did_show = TRUE;
4397 	    arg += 7;
4398 	}
4399 	else
4400 	{
4401 	    prefix = 1;
4402 	    if (STRNCMP(arg, "no", 2) == 0 && STRNCMP(arg, "novice", 6) != 0)
4403 	    {
4404 		prefix = 0;
4405 		arg += 2;
4406 	    }
4407 	    else if (STRNCMP(arg, "inv", 3) == 0)
4408 	    {
4409 		prefix = 2;
4410 		arg += 3;
4411 	    }
4412 
4413 	    /* find end of name */
4414 	    key = 0;
4415 	    if (*arg == '<')
4416 	    {
4417 		nextchar = 0;
4418 		opt_idx = -1;
4419 		/* look out for <t_>;> */
4420 		if (arg[1] == 't' && arg[2] == '_' && arg[3] && arg[4])
4421 		    len = 5;
4422 		else
4423 		{
4424 		    len = 1;
4425 		    while (arg[len] != NUL && arg[len] != '>')
4426 			++len;
4427 		}
4428 		if (arg[len] != '>')
4429 		{
4430 		    errmsg = e_invarg;
4431 		    goto skip;
4432 		}
4433 		arg[len] = NUL;			    /* put NUL after name */
4434 		if (arg[1] == 't' && arg[2] == '_') /* could be term code */
4435 		    opt_idx = findoption(arg + 1);
4436 		arg[len++] = '>';		    /* restore '>' */
4437 		if (opt_idx == -1)
4438 		    key = find_key_option(arg + 1, TRUE);
4439 	    }
4440 	    else
4441 	    {
4442 		len = 0;
4443 		/*
4444 		 * The two characters after "t_" may not be alphanumeric.
4445 		 */
4446 		if (arg[0] == 't' && arg[1] == '_' && arg[2] && arg[3])
4447 		    len = 4;
4448 		else
4449 		    while (ASCII_ISALNUM(arg[len]) || arg[len] == '_')
4450 			++len;
4451 		nextchar = arg[len];
4452 		arg[len] = NUL;			    /* put NUL after name */
4453 		opt_idx = findoption(arg);
4454 		arg[len] = nextchar;		    /* restore nextchar */
4455 		if (opt_idx == -1)
4456 		    key = find_key_option(arg, FALSE);
4457 	    }
4458 
4459 	    /* remember character after option name */
4460 	    afterchar = arg[len];
4461 
4462 	    /* skip white space, allow ":set ai  ?" */
4463 	    while (VIM_ISWHITE(arg[len]))
4464 		++len;
4465 
4466 	    adding = FALSE;
4467 	    prepending = FALSE;
4468 	    removing = FALSE;
4469 	    if (arg[len] != NUL && arg[len + 1] == '=')
4470 	    {
4471 		if (arg[len] == '+')
4472 		{
4473 		    adding = TRUE;		/* "+=" */
4474 		    ++len;
4475 		}
4476 		else if (arg[len] == '^')
4477 		{
4478 		    prepending = TRUE;		/* "^=" */
4479 		    ++len;
4480 		}
4481 		else if (arg[len] == '-')
4482 		{
4483 		    removing = TRUE;		/* "-=" */
4484 		    ++len;
4485 		}
4486 	    }
4487 	    nextchar = arg[len];
4488 
4489 	    if (opt_idx == -1 && key == 0)	/* found a mismatch: skip */
4490 	    {
4491 		errmsg = N_("E518: Unknown option");
4492 		goto skip;
4493 	    }
4494 
4495 	    if (opt_idx >= 0)
4496 	    {
4497 		if (options[opt_idx].var == NULL)   /* hidden option: skip */
4498 		{
4499 		    /* Only give an error message when requesting the value of
4500 		     * a hidden option, ignore setting it. */
4501 		    if (vim_strchr((char_u *)"=:!&<", nextchar) == NULL
4502 			    && (!(options[opt_idx].flags & P_BOOL)
4503 				|| nextchar == '?'))
4504 			errmsg = N_("E519: Option not supported");
4505 		    goto skip;
4506 		}
4507 
4508 		flags = options[opt_idx].flags;
4509 		varp = get_varp_scope(&(options[opt_idx]), opt_flags);
4510 	    }
4511 	    else
4512 	    {
4513 		flags = P_STRING;
4514 		if (key < 0)
4515 		{
4516 		    key_name[0] = KEY2TERMCAP0(key);
4517 		    key_name[1] = KEY2TERMCAP1(key);
4518 		}
4519 		else
4520 		{
4521 		    key_name[0] = KS_KEY;
4522 		    key_name[1] = (key & 0xff);
4523 		}
4524 	    }
4525 
4526 	    /* Skip all options that are not window-local (used when showing
4527 	     * an already loaded buffer in a window). */
4528 	    if ((opt_flags & OPT_WINONLY)
4529 			  && (opt_idx < 0 || options[opt_idx].var != VAR_WIN))
4530 		goto skip;
4531 
4532 	    /* Skip all options that are window-local (used for :vimgrep). */
4533 	    if ((opt_flags & OPT_NOWIN) && opt_idx >= 0
4534 					   && options[opt_idx].var == VAR_WIN)
4535 		goto skip;
4536 
4537 	    /* Disallow changing some options from modelines. */
4538 	    if (opt_flags & OPT_MODELINE)
4539 	    {
4540 		if (flags & (P_SECURE | P_NO_ML))
4541 		{
4542 		    errmsg = _("E520: Not allowed in a modeline");
4543 		    goto skip;
4544 		}
4545 #ifdef FEAT_DIFF
4546 		/* In diff mode some options are overruled.  This avoids that
4547 		 * 'foldmethod' becomes "marker" instead of "diff" and that
4548 		 * "wrap" gets set. */
4549 		if (curwin->w_p_diff
4550 			&& opt_idx >= 0  /* shut up coverity warning */
4551 			&& (
4552 #ifdef FEAT_FOLDING
4553 			    options[opt_idx].indir == PV_FDM ||
4554 #endif
4555 			    options[opt_idx].indir == PV_WRAP))
4556 		    goto skip;
4557 #endif
4558 	    }
4559 
4560 #ifdef HAVE_SANDBOX
4561 	    /* Disallow changing some options in the sandbox */
4562 	    if (sandbox != 0 && (flags & P_SECURE))
4563 	    {
4564 		errmsg = _(e_sandbox);
4565 		goto skip;
4566 	    }
4567 #endif
4568 
4569 	    if (vim_strchr((char_u *)"?=:!&<", nextchar) != NULL)
4570 	    {
4571 		arg += len;
4572 		cp_val = p_cp;
4573 		if (nextchar == '&' && arg[1] == 'v' && arg[2] == 'i')
4574 		{
4575 		    if (arg[3] == 'm')	/* "opt&vim": set to Vim default */
4576 		    {
4577 			cp_val = FALSE;
4578 			arg += 3;
4579 		    }
4580 		    else		/* "opt&vi": set to Vi default */
4581 		    {
4582 			cp_val = TRUE;
4583 			arg += 2;
4584 		    }
4585 		}
4586 		if (vim_strchr((char_u *)"?!&<", nextchar) != NULL
4587 			&& arg[1] != NUL && !VIM_ISWHITE(arg[1]))
4588 		{
4589 		    errmsg = e_trailing;
4590 		    goto skip;
4591 		}
4592 	    }
4593 
4594 	    /*
4595 	     * allow '=' and ':' for hystorical reasons (MSDOS command.com
4596 	     * allows only one '=' character per "set" command line. grrr. (jw)
4597 	     */
4598 	    if (nextchar == '?'
4599 		    || (prefix == 1
4600 			&& vim_strchr((char_u *)"=:&<", nextchar) == NULL
4601 			&& !(flags & P_BOOL)))
4602 	    {
4603 		/*
4604 		 * print value
4605 		 */
4606 		if (did_show)
4607 		    msg_putchar('\n');	    /* cursor below last one */
4608 		else
4609 		{
4610 		    gotocmdline(TRUE);	    /* cursor at status line */
4611 		    did_show = TRUE;	    /* remember that we did a line */
4612 		}
4613 		if (opt_idx >= 0)
4614 		{
4615 		    showoneopt(&options[opt_idx], opt_flags);
4616 #ifdef FEAT_EVAL
4617 		    if (p_verbose > 0)
4618 		    {
4619 			/* Mention where the option was last set. */
4620 			if (varp == options[opt_idx].var)
4621 			    last_set_msg(options[opt_idx].script_ctx);
4622 			else if ((int)options[opt_idx].indir & PV_WIN)
4623 			    last_set_msg(curwin->w_p_script_ctx[
4624 				      (int)options[opt_idx].indir & PV_MASK]);
4625 			else if ((int)options[opt_idx].indir & PV_BUF)
4626 			    last_set_msg(curbuf->b_p_script_ctx[
4627 				      (int)options[opt_idx].indir & PV_MASK]);
4628 		    }
4629 #endif
4630 		}
4631 		else
4632 		{
4633 		    char_u	    *p;
4634 
4635 		    p = find_termcode(key_name);
4636 		    if (p == NULL)
4637 		    {
4638 			errmsg = N_("E846: Key code not set");
4639 			goto skip;
4640 		    }
4641 		    else
4642 			(void)show_one_termcode(key_name, p, TRUE);
4643 		}
4644 		if (nextchar != '?'
4645 			&& nextchar != NUL && !VIM_ISWHITE(afterchar))
4646 		    errmsg = e_trailing;
4647 	    }
4648 	    else
4649 	    {
4650 		int value_is_replaced = !prepending && !adding && !removing;
4651 		int value_checked = FALSE;
4652 
4653 		if (flags & P_BOOL)		    /* boolean */
4654 		{
4655 		    if (nextchar == '=' || nextchar == ':')
4656 		    {
4657 			errmsg = e_invarg;
4658 			goto skip;
4659 		    }
4660 
4661 		    /*
4662 		     * ":set opt!": invert
4663 		     * ":set opt&": reset to default value
4664 		     * ":set opt<": reset to global value
4665 		     */
4666 		    if (nextchar == '!')
4667 			value = *(int *)(varp) ^ 1;
4668 		    else if (nextchar == '&')
4669 			value = (int)(long)(long_i)options[opt_idx].def_val[
4670 						((flags & P_VI_DEF) || cp_val)
4671 						 ?  VI_DEFAULT : VIM_DEFAULT];
4672 		    else if (nextchar == '<')
4673 		    {
4674 			/* For 'autoread' -1 means to use global value. */
4675 			if ((int *)varp == &curbuf->b_p_ar
4676 						    && opt_flags == OPT_LOCAL)
4677 			    value = -1;
4678 			else
4679 			    value = *(int *)get_varp_scope(&(options[opt_idx]),
4680 								  OPT_GLOBAL);
4681 		    }
4682 		    else
4683 		    {
4684 			/*
4685 			 * ":set invopt": invert
4686 			 * ":set opt" or ":set noopt": set or reset
4687 			 */
4688 			if (nextchar != NUL && !VIM_ISWHITE(afterchar))
4689 			{
4690 			    errmsg = e_trailing;
4691 			    goto skip;
4692 			}
4693 			if (prefix == 2)	/* inv */
4694 			    value = *(int *)(varp) ^ 1;
4695 			else
4696 			    value = prefix;
4697 		    }
4698 
4699 		    errmsg = set_bool_option(opt_idx, varp, (int)value,
4700 								   opt_flags);
4701 		}
4702 		else				    /* numeric or string */
4703 		{
4704 		    if (vim_strchr((char_u *)"=:&<", nextchar) == NULL
4705 							       || prefix != 1)
4706 		    {
4707 			errmsg = e_invarg;
4708 			goto skip;
4709 		    }
4710 
4711 		    if (flags & P_NUM)		    /* numeric */
4712 		    {
4713 			/*
4714 			 * Different ways to set a number option:
4715 			 * &	    set to default value
4716 			 * <	    set to global value
4717 			 * <xx>	    accept special key codes for 'wildchar'
4718 			 * c	    accept any non-digit for 'wildchar'
4719 			 * [-]0-9   set number
4720 			 * other    error
4721 			 */
4722 			++arg;
4723 			if (nextchar == '&')
4724 			    value = (long)(long_i)options[opt_idx].def_val[
4725 						((flags & P_VI_DEF) || cp_val)
4726 						 ?  VI_DEFAULT : VIM_DEFAULT];
4727 			else if (nextchar == '<')
4728 			{
4729 			    /* For 'undolevels' NO_LOCAL_UNDOLEVEL means to
4730 			     * use the global value. */
4731 			    if ((long *)varp == &curbuf->b_p_ul
4732 						    && opt_flags == OPT_LOCAL)
4733 				value = NO_LOCAL_UNDOLEVEL;
4734 			    else
4735 				value = *(long *)get_varp_scope(
4736 					     &(options[opt_idx]), OPT_GLOBAL);
4737 			}
4738 			else if (((long *)varp == &p_wc
4739 				    || (long *)varp == &p_wcm)
4740 				&& (*arg == '<'
4741 				    || *arg == '^'
4742 				    || (*arg != NUL
4743 					&& (!arg[1] || VIM_ISWHITE(arg[1]))
4744 					&& !VIM_ISDIGIT(*arg))))
4745 			{
4746 			    value = string_to_key(arg, FALSE);
4747 			    if (value == 0 && (long *)varp != &p_wcm)
4748 			    {
4749 				errmsg = e_invarg;
4750 				goto skip;
4751 			    }
4752 			}
4753 			else if (*arg == '-' || VIM_ISDIGIT(*arg))
4754 			{
4755 			    /* Allow negative (for 'undolevels'), octal and
4756 			     * hex numbers. */
4757 			    vim_str2nr(arg, NULL, &i, STR2NR_ALL,
4758 							     &value, NULL, 0);
4759 			    if (arg[i] != NUL && !VIM_ISWHITE(arg[i]))
4760 			    {
4761 				errmsg = e_invarg;
4762 				goto skip;
4763 			    }
4764 			}
4765 			else
4766 			{
4767 			    errmsg = N_("E521: Number required after =");
4768 			    goto skip;
4769 			}
4770 
4771 			if (adding)
4772 			    value = *(long *)varp + value;
4773 			if (prepending)
4774 			    value = *(long *)varp * value;
4775 			if (removing)
4776 			    value = *(long *)varp - value;
4777 			errmsg = set_num_option(opt_idx, varp, value,
4778 					   errbuf, sizeof(errbuf), opt_flags);
4779 		    }
4780 		    else if (opt_idx >= 0)		    /* string */
4781 		    {
4782 			char_u	  *save_arg = NULL;
4783 			char_u	  *s = NULL;
4784 			char_u	  *oldval = NULL; /* previous value if *varp */
4785 			char_u	  *newval;
4786 			char_u	  *origval = NULL;
4787 #if defined(FEAT_EVAL)
4788 			char_u	  *saved_origval = NULL;
4789 			char_u	  *saved_newval = NULL;
4790 #endif
4791 			unsigned  newlen;
4792 			int	  comma;
4793 			int	  bs;
4794 			int	  new_value_alloced;	/* new string option
4795 							   was allocated */
4796 
4797 			/* When using ":set opt=val" for a global option
4798 			 * with a local value the local value will be
4799 			 * reset, use the global value here. */
4800 			if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0
4801 				&& ((int)options[opt_idx].indir & PV_BOTH))
4802 			    varp = options[opt_idx].var;
4803 
4804 			/* The old value is kept until we are sure that the
4805 			 * new value is valid. */
4806 			oldval = *(char_u **)varp;
4807 
4808 			/* When setting the local value of a global
4809 			 * option, the old value may be the global value. */
4810 			if (((int)options[opt_idx].indir & PV_BOTH)
4811 					       && (opt_flags & OPT_LOCAL))
4812 			    origval = *(char_u **)get_varp(
4813 						       &options[opt_idx]);
4814 			else
4815 			    origval = oldval;
4816 
4817 			if (nextchar == '&')	/* set to default val */
4818 			{
4819 			    newval = options[opt_idx].def_val[
4820 						((flags & P_VI_DEF) || cp_val)
4821 						 ?  VI_DEFAULT : VIM_DEFAULT];
4822 			    if ((char_u **)varp == &p_bg)
4823 			    {
4824 				/* guess the value of 'background' */
4825 #ifdef FEAT_GUI
4826 				if (gui.in_use)
4827 				    newval = gui_bg_default();
4828 				else
4829 #endif
4830 				    newval = term_bg_default();
4831 			    }
4832 
4833 			    /* expand environment variables and ~ (since the
4834 			     * default value was already expanded, only
4835 			     * required when an environment variable was set
4836 			     * later */
4837 			    if (newval == NULL)
4838 				newval = empty_option;
4839 			    else
4840 			    {
4841 				s = option_expand(opt_idx, newval);
4842 				if (s == NULL)
4843 				    s = newval;
4844 				newval = vim_strsave(s);
4845 			    }
4846 			    new_value_alloced = TRUE;
4847 			}
4848 			else if (nextchar == '<')	/* set to global val */
4849 			{
4850 			    newval = vim_strsave(*(char_u **)get_varp_scope(
4851 					     &(options[opt_idx]), OPT_GLOBAL));
4852 			    new_value_alloced = TRUE;
4853 			}
4854 			else
4855 			{
4856 			    ++arg;	/* jump to after the '=' or ':' */
4857 
4858 			    /*
4859 			     * Set 'keywordprg' to ":help" if an empty
4860 			     * value was passed to :set by the user.
4861 			     * Misuse errbuf[] for the resulting string.
4862 			     */
4863 			    if (varp == (char_u *)&p_kp
4864 					      && (*arg == NUL || *arg == ' '))
4865 			    {
4866 				STRCPY(errbuf, ":help");
4867 				save_arg = arg;
4868 				arg = (char_u *)errbuf;
4869 			    }
4870 			    /*
4871 			     * Convert 'backspace' number to string, for
4872 			     * adding, prepending and removing string.
4873 			     */
4874 			    else if (varp == (char_u *)&p_bs
4875 					 && VIM_ISDIGIT(**(char_u **)varp))
4876 			    {
4877 				i = getdigits((char_u **)varp);
4878 				switch (i)
4879 				{
4880 				    case 0:
4881 					*(char_u **)varp = empty_option;
4882 					break;
4883 				    case 1:
4884 					*(char_u **)varp = vim_strsave(
4885 						      (char_u *)"indent,eol");
4886 					break;
4887 				    case 2:
4888 					*(char_u **)varp = vim_strsave(
4889 						(char_u *)"indent,eol,start");
4890 					break;
4891 				}
4892 				vim_free(oldval);
4893 				if (origval == oldval)
4894 				    origval = *(char_u **)varp;
4895 				oldval = *(char_u **)varp;
4896 			    }
4897 			    /*
4898 			     * Convert 'whichwrap' number to string, for
4899 			     * backwards compatibility with Vim 3.0.
4900 			     * Misuse errbuf[] for the resulting string.
4901 			     */
4902 			    else if (varp == (char_u *)&p_ww
4903 							 && VIM_ISDIGIT(*arg))
4904 			    {
4905 				*errbuf = NUL;
4906 				i = getdigits(&arg);
4907 				if (i & 1)
4908 				    STRCAT(errbuf, "b,");
4909 				if (i & 2)
4910 				    STRCAT(errbuf, "s,");
4911 				if (i & 4)
4912 				    STRCAT(errbuf, "h,l,");
4913 				if (i & 8)
4914 				    STRCAT(errbuf, "<,>,");
4915 				if (i & 16)
4916 				    STRCAT(errbuf, "[,],");
4917 				if (*errbuf != NUL)	/* remove trailing , */
4918 				    errbuf[STRLEN(errbuf) - 1] = NUL;
4919 				save_arg = arg;
4920 				arg = (char_u *)errbuf;
4921 			    }
4922 			    /*
4923 			     * Remove '>' before 'dir' and 'bdir', for
4924 			     * backwards compatibility with version 3.0
4925 			     */
4926 			    else if (  *arg == '>'
4927 				    && (varp == (char_u *)&p_dir
4928 					    || varp == (char_u *)&p_bdir))
4929 			    {
4930 				++arg;
4931 			    }
4932 
4933 			    /*
4934 			     * Copy the new string into allocated memory.
4935 			     * Can't use set_string_option_direct(), because
4936 			     * we need to remove the backslashes.
4937 			     */
4938 			    /* get a bit too much */
4939 			    newlen = (unsigned)STRLEN(arg) + 1;
4940 			    if (adding || prepending || removing)
4941 				newlen += (unsigned)STRLEN(origval) + 1;
4942 			    newval = alloc(newlen);
4943 			    if (newval == NULL)  /* out of mem, don't change */
4944 				break;
4945 			    s = newval;
4946 
4947 			    /*
4948 			     * Copy the string, skip over escaped chars.
4949 			     * For MS-DOS and WIN32 backslashes before normal
4950 			     * file name characters are not removed, and keep
4951 			     * backslash at start, for "\\machine\path", but
4952 			     * do remove it for "\\\\machine\\path".
4953 			     * The reverse is found in ExpandOldSetting().
4954 			     */
4955 			    while (*arg && !VIM_ISWHITE(*arg))
4956 			    {
4957 				if (*arg == '\\' && arg[1] != NUL
4958 #ifdef BACKSLASH_IN_FILENAME
4959 					&& !((flags & P_EXPAND)
4960 						&& vim_isfilec(arg[1])
4961 						&& (arg[1] != '\\'
4962 						    || (s == newval
4963 							&& arg[2] != '\\')))
4964 #endif
4965 								    )
4966 				    ++arg;	/* remove backslash */
4967 				if (has_mbyte
4968 					&& (i = (*mb_ptr2len)(arg)) > 1)
4969 				{
4970 				    /* copy multibyte char */
4971 				    mch_memmove(s, arg, (size_t)i);
4972 				    arg += i;
4973 				    s += i;
4974 				}
4975 				else
4976 				    *s++ = *arg++;
4977 			    }
4978 			    *s = NUL;
4979 
4980 			    /*
4981 			     * Expand environment variables and ~.
4982 			     * Don't do it when adding without inserting a
4983 			     * comma.
4984 			     */
4985 			    if (!(adding || prepending || removing)
4986 							 || (flags & P_COMMA))
4987 			    {
4988 				s = option_expand(opt_idx, newval);
4989 				if (s != NULL)
4990 				{
4991 				    vim_free(newval);
4992 				    newlen = (unsigned)STRLEN(s) + 1;
4993 				    if (adding || prepending || removing)
4994 					newlen += (unsigned)STRLEN(origval) + 1;
4995 				    newval = alloc(newlen);
4996 				    if (newval == NULL)
4997 					break;
4998 				    STRCPY(newval, s);
4999 				}
5000 			    }
5001 
5002 			    /* locate newval[] in origval[] when removing it
5003 			     * and when adding to avoid duplicates */
5004 			    i = 0;	/* init for GCC */
5005 			    if (removing || (flags & P_NODUP))
5006 			    {
5007 				i = (int)STRLEN(newval);
5008 				bs = 0;
5009 				for (s = origval; *s; ++s)
5010 				{
5011 				    if ((!(flags & P_COMMA)
5012 						|| s == origval
5013 						|| (s[-1] == ',' && !(bs & 1)))
5014 					    && STRNCMP(s, newval, i) == 0
5015 					    && (!(flags & P_COMMA)
5016 						|| s[i] == ','
5017 						|| s[i] == NUL))
5018 					break;
5019 				    /* Count backslashes.  Only a comma with an
5020 				     * even number of backslashes or a single
5021 				     * backslash preceded by a comma before it
5022 				     * is recognized as a separator */
5023 				    if ((s > origval + 1
5024 						&& s[-1] == '\\'
5025 						&& s[-2] != ',')
5026 					    || (s == origval + 1
5027 						&& s[-1] == '\\'))
5028 
5029 					++bs;
5030 				    else
5031 					bs = 0;
5032 				}
5033 
5034 				/* do not add if already there */
5035 				if ((adding || prepending) && *s)
5036 				{
5037 				    prepending = FALSE;
5038 				    adding = FALSE;
5039 				    STRCPY(newval, origval);
5040 				}
5041 			    }
5042 
5043 			    /* concatenate the two strings; add a ',' if
5044 			     * needed */
5045 			    if (adding || prepending)
5046 			    {
5047 				comma = ((flags & P_COMMA) && *origval != NUL
5048 							   && *newval != NUL);
5049 				if (adding)
5050 				{
5051 				    i = (int)STRLEN(origval);
5052 				    /* strip a trailing comma, would get 2 */
5053 				    if (comma && i > 1
5054 					  && (flags & P_ONECOMMA) == P_ONECOMMA
5055 					  && origval[i - 1] == ','
5056 					  && origval[i - 2] != '\\')
5057 					i--;
5058 				    mch_memmove(newval + i + comma, newval,
5059 							  STRLEN(newval) + 1);
5060 				    mch_memmove(newval, origval, (size_t)i);
5061 				}
5062 				else
5063 				{
5064 				    i = (int)STRLEN(newval);
5065 				    STRMOVE(newval + i + comma, origval);
5066 				}
5067 				if (comma)
5068 				    newval[i] = ',';
5069 			    }
5070 
5071 			    /* Remove newval[] from origval[]. (Note: "i" has
5072 			     * been set above and is used here). */
5073 			    if (removing)
5074 			    {
5075 				STRCPY(newval, origval);
5076 				if (*s)
5077 				{
5078 				    /* may need to remove a comma */
5079 				    if (flags & P_COMMA)
5080 				    {
5081 					if (s == origval)
5082 					{
5083 					    /* include comma after string */
5084 					    if (s[i] == ',')
5085 						++i;
5086 					}
5087 					else
5088 					{
5089 					    /* include comma before string */
5090 					    --s;
5091 					    ++i;
5092 					}
5093 				    }
5094 				    STRMOVE(newval + (s - origval), s + i);
5095 				}
5096 			    }
5097 
5098 			    if (flags & P_FLAGLIST)
5099 			    {
5100 				/* Remove flags that appear twice. */
5101 				for (s = newval; *s;)
5102 				{
5103 				    /* if options have P_FLAGLIST and
5104 				     * P_ONECOMMA such as 'whichwrap' */
5105 				    if (flags & P_ONECOMMA)
5106 				    {
5107 					if (*s != ',' && *(s + 1) == ','
5108 					      && vim_strchr(s + 2, *s) != NULL)
5109 					{
5110 					    /* Remove the duplicated value and
5111 					     * the next comma. */
5112 					    STRMOVE(s, s + 2);
5113 					    continue;
5114 					}
5115 				    }
5116 				    else
5117 				    {
5118 					if ((!(flags & P_COMMA) || *s != ',')
5119 					      && vim_strchr(s + 1, *s) != NULL)
5120 					{
5121 					    STRMOVE(s, s + 1);
5122 					    continue;
5123 					}
5124 				    }
5125 				    ++s;
5126 				}
5127 			    }
5128 
5129 			    if (save_arg != NULL)   /* number for 'whichwrap' */
5130 				arg = save_arg;
5131 			    new_value_alloced = TRUE;
5132 			}
5133 
5134 			/*
5135 			 * Set the new value.
5136 			 */
5137 			*(char_u **)(varp) = newval;
5138 
5139 #if defined(FEAT_EVAL)
5140 			if (!starting
5141 # ifdef FEAT_CRYPT
5142 				&& options[opt_idx].indir != PV_KEY
5143 # endif
5144 					  && origval != NULL && newval != NULL)
5145 			{
5146 			    /* origval may be freed by
5147 			     * did_set_string_option(), make a copy. */
5148 			    saved_origval = vim_strsave(origval);
5149 			    /* newval (and varp) may become invalid if the
5150 			     * buffer is closed by autocommands. */
5151 			    saved_newval = vim_strsave(newval);
5152 			}
5153 #endif
5154 
5155 			{
5156 			    long_u *p = insecure_flag(opt_idx, opt_flags);
5157 			    int	    secure_saved = secure;
5158 
5159 			    // When an option is set in the sandbox, from a
5160 			    // modeline or in secure mode, then deal with side
5161 			    // effects in secure mode.  Also when the value was
5162 			    // set with the P_INSECURE flag and is not
5163 			    // completely replaced.
5164 			    if (secure
5165 #ifdef HAVE_SANDBOX
5166 				    || sandbox != 0
5167 #endif
5168 				    || (opt_flags & OPT_MODELINE)
5169 				    || (!value_is_replaced && (*p & P_INSECURE)))
5170 				++secure;
5171 
5172 			    // Handle side effects, and set the global value
5173 			    // for ":set" on local options. Note: when setting
5174 			    // 'syntax' or 'filetype' autocommands may be
5175 			    // triggered that can cause havoc.
5176 			    errmsg = did_set_string_option(
5177 				    opt_idx, (char_u **)varp,
5178 				    new_value_alloced, oldval, errbuf,
5179 				    opt_flags, &value_checked);
5180 
5181 			    secure = secure_saved;
5182 			}
5183 
5184 #if defined(FEAT_EVAL)
5185 			if (errmsg == NULL)
5186 			    trigger_optionsset_string(opt_idx, opt_flags,
5187 						  saved_origval, saved_newval);
5188 			vim_free(saved_origval);
5189 			vim_free(saved_newval);
5190 #endif
5191 			/* If error detected, print the error message. */
5192 			if (errmsg != NULL)
5193 			    goto skip;
5194 		    }
5195 		    else	    /* key code option */
5196 		    {
5197 			char_u	    *p;
5198 
5199 			if (nextchar == '&')
5200 			{
5201 			    if (add_termcap_entry(key_name, TRUE) == FAIL)
5202 				errmsg = N_("E522: Not found in termcap");
5203 			}
5204 			else
5205 			{
5206 			    ++arg; /* jump to after the '=' or ':' */
5207 			    for (p = arg; *p && !VIM_ISWHITE(*p); ++p)
5208 				if (*p == '\\' && p[1] != NUL)
5209 				    ++p;
5210 			    nextchar = *p;
5211 			    *p = NUL;
5212 			    add_termcode(key_name, arg, FALSE);
5213 			    *p = nextchar;
5214 			}
5215 			if (full_screen)
5216 			    ttest(FALSE);
5217 			redraw_all_later(CLEAR);
5218 		    }
5219 		}
5220 
5221 		if (opt_idx >= 0)
5222 		    did_set_option(
5223 			 opt_idx, opt_flags, value_is_replaced, value_checked);
5224 	    }
5225 
5226 skip:
5227 	    /*
5228 	     * Advance to next argument.
5229 	     * - skip until a blank found, taking care of backslashes
5230 	     * - skip blanks
5231 	     * - skip one "=val" argument (for hidden options ":set gfn =xx")
5232 	     */
5233 	    for (i = 0; i < 2 ; ++i)
5234 	    {
5235 		while (*arg != NUL && !VIM_ISWHITE(*arg))
5236 		    if (*arg++ == '\\' && *arg != NUL)
5237 			++arg;
5238 		arg = skipwhite(arg);
5239 		if (*arg != '=')
5240 		    break;
5241 	    }
5242 	}
5243 
5244 	if (errmsg != NULL)
5245 	{
5246 	    vim_strncpy(IObuff, (char_u *)_(errmsg), IOSIZE - 1);
5247 	    i = (int)STRLEN(IObuff) + 2;
5248 	    if (i + (arg - startarg) < IOSIZE)
5249 	    {
5250 		/* append the argument with the error */
5251 		STRCAT(IObuff, ": ");
5252 		mch_memmove(IObuff + i, startarg, (arg - startarg));
5253 		IObuff[i + (arg - startarg)] = NUL;
5254 	    }
5255 	    /* make sure all characters are printable */
5256 	    trans_characters(IObuff, IOSIZE);
5257 
5258 	    ++no_wait_return;		// wait_return done later
5259 	    emsg((char *)IObuff);	// show error highlighted
5260 	    --no_wait_return;
5261 
5262 	    return FAIL;
5263 	}
5264 
5265 	arg = skipwhite(arg);
5266     }
5267 
5268 theend:
5269     if (silent_mode && did_show)
5270     {
5271 	/* After displaying option values in silent mode. */
5272 	silent_mode = FALSE;
5273 	info_message = TRUE;	/* use mch_msg(), not mch_errmsg() */
5274 	msg_putchar('\n');
5275 	cursor_on();		/* msg_start() switches it off */
5276 	out_flush();
5277 	silent_mode = TRUE;
5278 	info_message = FALSE;	/* use mch_msg(), not mch_errmsg() */
5279     }
5280 
5281     return OK;
5282 }
5283 
5284 /*
5285  * Call this when an option has been given a new value through a user command.
5286  * Sets the P_WAS_SET flag and takes care of the P_INSECURE flag.
5287  */
5288     static void
5289 did_set_option(
5290     int	    opt_idx,
5291     int	    opt_flags,	    // possibly with OPT_MODELINE
5292     int	    new_value,	    // value was replaced completely
5293     int	    value_checked)  // value was checked to be safe, no need to set the
5294 			    // P_INSECURE flag.
5295 {
5296     long_u	*p;
5297 
5298     options[opt_idx].flags |= P_WAS_SET;
5299 
5300     /* When an option is set in the sandbox, from a modeline or in secure mode
5301      * set the P_INSECURE flag.  Otherwise, if a new value is stored reset the
5302      * flag. */
5303     p = insecure_flag(opt_idx, opt_flags);
5304     if (!value_checked && (secure
5305 #ifdef HAVE_SANDBOX
5306 	    || sandbox != 0
5307 #endif
5308 	    || (opt_flags & OPT_MODELINE)))
5309 	*p = *p | P_INSECURE;
5310     else if (new_value)
5311 	*p = *p & ~P_INSECURE;
5312 }
5313 
5314     static char *
5315 illegal_char(char *errbuf, int c)
5316 {
5317     if (errbuf == NULL)
5318 	return "";
5319     sprintf((char *)errbuf, _("E539: Illegal character <%s>"),
5320 							(char *)transchar(c));
5321     return errbuf;
5322 }
5323 
5324 /*
5325  * Convert a key name or string into a key value.
5326  * Used for 'wildchar' and 'cedit' options.
5327  * When "multi_byte" is TRUE allow for multi-byte characters.
5328  */
5329     int
5330 string_to_key(char_u *arg, int multi_byte)
5331 {
5332     if (*arg == '<')
5333 	return find_key_option(arg + 1, TRUE);
5334     if (*arg == '^')
5335 	return Ctrl_chr(arg[1]);
5336     if (multi_byte)
5337 	return PTR2CHAR(arg);
5338     return *arg;
5339 }
5340 
5341 #ifdef FEAT_CMDWIN
5342 /*
5343  * Check value of 'cedit' and set cedit_key.
5344  * Returns NULL if value is OK, error message otherwise.
5345  */
5346     static char *
5347 check_cedit(void)
5348 {
5349     int n;
5350 
5351     if (*p_cedit == NUL)
5352 	cedit_key = -1;
5353     else
5354     {
5355 	n = string_to_key(p_cedit, FALSE);
5356 	if (vim_isprintc(n))
5357 	    return e_invarg;
5358 	cedit_key = n;
5359     }
5360     return NULL;
5361 }
5362 #endif
5363 
5364 #ifdef FEAT_TITLE
5365 /*
5366  * When changing 'title', 'titlestring', 'icon' or 'iconstring', call
5367  * maketitle() to create and display it.
5368  * When switching the title or icon off, call mch_restore_title() to get
5369  * the old value back.
5370  */
5371     static void
5372 did_set_title(void)
5373 {
5374     if (starting != NO_SCREEN
5375 #ifdef FEAT_GUI
5376 	    && !gui.starting
5377 #endif
5378 				)
5379 	maketitle();
5380 }
5381 #endif
5382 
5383 /*
5384  * set_options_bin -  called when 'bin' changes value.
5385  */
5386     void
5387 set_options_bin(
5388     int		oldval,
5389     int		newval,
5390     int		opt_flags)	/* OPT_LOCAL and/or OPT_GLOBAL */
5391 {
5392     /*
5393      * The option values that are changed when 'bin' changes are
5394      * copied when 'bin is set and restored when 'bin' is reset.
5395      */
5396     if (newval)
5397     {
5398 	if (!oldval)		/* switched on */
5399 	{
5400 	    if (!(opt_flags & OPT_GLOBAL))
5401 	    {
5402 		curbuf->b_p_tw_nobin = curbuf->b_p_tw;
5403 		curbuf->b_p_wm_nobin = curbuf->b_p_wm;
5404 		curbuf->b_p_ml_nobin = curbuf->b_p_ml;
5405 		curbuf->b_p_et_nobin = curbuf->b_p_et;
5406 	    }
5407 	    if (!(opt_flags & OPT_LOCAL))
5408 	    {
5409 		p_tw_nobin = p_tw;
5410 		p_wm_nobin = p_wm;
5411 		p_ml_nobin = p_ml;
5412 		p_et_nobin = p_et;
5413 	    }
5414 	}
5415 
5416 	if (!(opt_flags & OPT_GLOBAL))
5417 	{
5418 	    curbuf->b_p_tw = 0;	/* no automatic line wrap */
5419 	    curbuf->b_p_wm = 0;	/* no automatic line wrap */
5420 	    curbuf->b_p_ml = 0;	/* no modelines */
5421 	    curbuf->b_p_et = 0;	/* no expandtab */
5422 	}
5423 	if (!(opt_flags & OPT_LOCAL))
5424 	{
5425 	    p_tw = 0;
5426 	    p_wm = 0;
5427 	    p_ml = FALSE;
5428 	    p_et = FALSE;
5429 	    p_bin = TRUE;	/* needed when called for the "-b" argument */
5430 	}
5431     }
5432     else if (oldval)		/* switched off */
5433     {
5434 	if (!(opt_flags & OPT_GLOBAL))
5435 	{
5436 	    curbuf->b_p_tw = curbuf->b_p_tw_nobin;
5437 	    curbuf->b_p_wm = curbuf->b_p_wm_nobin;
5438 	    curbuf->b_p_ml = curbuf->b_p_ml_nobin;
5439 	    curbuf->b_p_et = curbuf->b_p_et_nobin;
5440 	}
5441 	if (!(opt_flags & OPT_LOCAL))
5442 	{
5443 	    p_tw = p_tw_nobin;
5444 	    p_wm = p_wm_nobin;
5445 	    p_ml = p_ml_nobin;
5446 	    p_et = p_et_nobin;
5447 	}
5448     }
5449 }
5450 
5451 #ifdef FEAT_VIMINFO
5452 /*
5453  * Find the parameter represented by the given character (eg ', :, ", or /),
5454  * and return its associated value in the 'viminfo' string.
5455  * Only works for number parameters, not for 'r' or 'n'.
5456  * If the parameter is not specified in the string or there is no following
5457  * number, return -1.
5458  */
5459     int
5460 get_viminfo_parameter(int type)
5461 {
5462     char_u  *p;
5463 
5464     p = find_viminfo_parameter(type);
5465     if (p != NULL && VIM_ISDIGIT(*p))
5466 	return atoi((char *)p);
5467     return -1;
5468 }
5469 
5470 /*
5471  * Find the parameter represented by the given character (eg ''', ':', '"', or
5472  * '/') in the 'viminfo' option and return a pointer to the string after it.
5473  * Return NULL if the parameter is not specified in the string.
5474  */
5475     char_u *
5476 find_viminfo_parameter(int type)
5477 {
5478     char_u  *p;
5479 
5480     for (p = p_viminfo; *p; ++p)
5481     {
5482 	if (*p == type)
5483 	    return p + 1;
5484 	if (*p == 'n')		    /* 'n' is always the last one */
5485 	    break;
5486 	p = vim_strchr(p, ',');	    /* skip until next ',' */
5487 	if (p == NULL)		    /* hit the end without finding parameter */
5488 	    break;
5489     }
5490     return NULL;
5491 }
5492 #endif
5493 
5494 /*
5495  * Expand environment variables for some string options.
5496  * These string options cannot be indirect!
5497  * If "val" is NULL expand the current value of the option.
5498  * Return pointer to NameBuff, or NULL when not expanded.
5499  */
5500     static char_u *
5501 option_expand(int opt_idx, char_u *val)
5502 {
5503     /* if option doesn't need expansion nothing to do */
5504     if (!(options[opt_idx].flags & P_EXPAND) || options[opt_idx].var == NULL)
5505 	return NULL;
5506 
5507     /* If val is longer than MAXPATHL no meaningful expansion can be done,
5508      * expand_env() would truncate the string. */
5509     if (val != NULL && STRLEN(val) > MAXPATHL)
5510 	return NULL;
5511 
5512     if (val == NULL)
5513 	val = *(char_u **)options[opt_idx].var;
5514 
5515     /*
5516      * Expanding this with NameBuff, expand_env() must not be passed IObuff.
5517      * Escape spaces when expanding 'tags', they are used to separate file
5518      * names.
5519      * For 'spellsuggest' expand after "file:".
5520      */
5521     expand_env_esc(val, NameBuff, MAXPATHL,
5522 	    (char_u **)options[opt_idx].var == &p_tags, FALSE,
5523 #ifdef FEAT_SPELL
5524 	    (char_u **)options[opt_idx].var == &p_sps ? (char_u *)"file:" :
5525 #endif
5526 				  NULL);
5527     if (STRCMP(NameBuff, val) == 0)   /* they are the same */
5528 	return NULL;
5529 
5530     return NameBuff;
5531 }
5532 
5533 /*
5534  * After setting various option values: recompute variables that depend on
5535  * option values.
5536  */
5537     static void
5538 didset_options(void)
5539 {
5540     /* initialize the table for 'iskeyword' et.al. */
5541     (void)init_chartab();
5542 
5543     (void)opt_strings_flags(p_cmp, p_cmp_values, &cmp_flags, TRUE);
5544     (void)opt_strings_flags(p_bkc, p_bkc_values, &bkc_flags, TRUE);
5545     (void)opt_strings_flags(p_bo, p_bo_values, &bo_flags, TRUE);
5546 #ifdef FEAT_SESSION
5547     (void)opt_strings_flags(p_ssop, p_ssop_values, &ssop_flags, TRUE);
5548     (void)opt_strings_flags(p_vop, p_ssop_values, &vop_flags, TRUE);
5549 #endif
5550 #ifdef FEAT_FOLDING
5551     (void)opt_strings_flags(p_fdo, p_fdo_values, &fdo_flags, TRUE);
5552 #endif
5553     (void)opt_strings_flags(p_dy, p_dy_values, &dy_flags, TRUE);
5554     (void)opt_strings_flags(p_tc, p_tc_values, &tc_flags, FALSE);
5555     (void)opt_strings_flags(p_ve, p_ve_values, &ve_flags, TRUE);
5556 #if defined(FEAT_MOUSE) && (defined(UNIX) || defined(VMS))
5557     (void)opt_strings_flags(p_ttym, p_ttym_values, &ttym_flags, FALSE);
5558 #endif
5559 #ifdef FEAT_SPELL
5560     (void)spell_check_msm();
5561     (void)spell_check_sps();
5562     (void)compile_cap_prog(curwin->w_s);
5563     (void)did_set_spell_option(TRUE);
5564 #endif
5565 #if defined(FEAT_TOOLBAR) && !defined(FEAT_GUI_W32)
5566     (void)opt_strings_flags(p_toolbar, p_toolbar_values, &toolbar_flags, TRUE);
5567 #endif
5568 #if defined(FEAT_TOOLBAR) && defined(FEAT_GUI_GTK)
5569     (void)opt_strings_flags(p_tbis, p_tbis_values, &tbis_flags, FALSE);
5570 #endif
5571 #ifdef FEAT_CMDWIN
5572     /* set cedit_key */
5573     (void)check_cedit();
5574 #endif
5575 #ifdef FEAT_LINEBREAK
5576     briopt_check(curwin);
5577 #endif
5578 #ifdef FEAT_LINEBREAK
5579     /* initialize the table for 'breakat'. */
5580     fill_breakat_flags();
5581 #endif
5582 
5583 }
5584 
5585 /*
5586  * More side effects of setting options.
5587  */
5588     static void
5589 didset_options2(void)
5590 {
5591     /* Initialize the highlight_attr[] table. */
5592     (void)highlight_changed();
5593 
5594     /* Parse default for 'wildmode'  */
5595     check_opt_wim();
5596 
5597     (void)set_chars_option(&p_lcs);
5598     /* Parse default for 'fillchars'. */
5599     (void)set_chars_option(&p_fcs);
5600 
5601 #ifdef FEAT_CLIPBOARD
5602     /* Parse default for 'clipboard' */
5603     (void)check_clipboard_option();
5604 #endif
5605 #ifdef FEAT_VARTABS
5606     tabstop_set(curbuf->b_p_vsts, &curbuf->b_p_vsts_array);
5607     tabstop_set(curbuf->b_p_vts,  &curbuf->b_p_vts_array);
5608 #endif
5609 }
5610 
5611 /*
5612  * Check for string options that are NULL (normally only termcap options).
5613  */
5614     void
5615 check_options(void)
5616 {
5617     int		opt_idx;
5618 
5619     for (opt_idx = 0; options[opt_idx].fullname != NULL; opt_idx++)
5620 	if ((options[opt_idx].flags & P_STRING) && options[opt_idx].var != NULL)
5621 	    check_string_option((char_u **)get_varp(&(options[opt_idx])));
5622 }
5623 
5624 /*
5625  * Check string options in a buffer for NULL value.
5626  */
5627     void
5628 check_buf_options(buf_T *buf)
5629 {
5630     check_string_option(&buf->b_p_bh);
5631     check_string_option(&buf->b_p_bt);
5632     check_string_option(&buf->b_p_fenc);
5633     check_string_option(&buf->b_p_ff);
5634 #ifdef FEAT_FIND_ID
5635     check_string_option(&buf->b_p_def);
5636     check_string_option(&buf->b_p_inc);
5637 # ifdef FEAT_EVAL
5638     check_string_option(&buf->b_p_inex);
5639 # endif
5640 #endif
5641 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
5642     check_string_option(&buf->b_p_inde);
5643     check_string_option(&buf->b_p_indk);
5644 #endif
5645 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
5646     check_string_option(&buf->b_p_bexpr);
5647 #endif
5648 #if defined(FEAT_CRYPT)
5649     check_string_option(&buf->b_p_cm);
5650 #endif
5651     check_string_option(&buf->b_p_fp);
5652 #if defined(FEAT_EVAL)
5653     check_string_option(&buf->b_p_fex);
5654 #endif
5655 #ifdef FEAT_CRYPT
5656     check_string_option(&buf->b_p_key);
5657 #endif
5658     check_string_option(&buf->b_p_kp);
5659     check_string_option(&buf->b_p_mps);
5660     check_string_option(&buf->b_p_fo);
5661     check_string_option(&buf->b_p_flp);
5662     check_string_option(&buf->b_p_isk);
5663 #ifdef FEAT_COMMENTS
5664     check_string_option(&buf->b_p_com);
5665 #endif
5666 #ifdef FEAT_FOLDING
5667     check_string_option(&buf->b_p_cms);
5668 #endif
5669     check_string_option(&buf->b_p_nf);
5670 #ifdef FEAT_TEXTOBJ
5671     check_string_option(&buf->b_p_qe);
5672 #endif
5673 #ifdef FEAT_SYN_HL
5674     check_string_option(&buf->b_p_syn);
5675     check_string_option(&buf->b_s.b_syn_isk);
5676 #endif
5677 #ifdef FEAT_SPELL
5678     check_string_option(&buf->b_s.b_p_spc);
5679     check_string_option(&buf->b_s.b_p_spf);
5680     check_string_option(&buf->b_s.b_p_spl);
5681 #endif
5682 #ifdef FEAT_SEARCHPATH
5683     check_string_option(&buf->b_p_sua);
5684 #endif
5685 #ifdef FEAT_CINDENT
5686     check_string_option(&buf->b_p_cink);
5687     check_string_option(&buf->b_p_cino);
5688     parse_cino(buf);
5689 #endif
5690     check_string_option(&buf->b_p_ft);
5691 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
5692     check_string_option(&buf->b_p_cinw);
5693 #endif
5694 #ifdef FEAT_INS_EXPAND
5695     check_string_option(&buf->b_p_cpt);
5696 #endif
5697 #ifdef FEAT_COMPL_FUNC
5698     check_string_option(&buf->b_p_cfu);
5699     check_string_option(&buf->b_p_ofu);
5700 #endif
5701 #ifdef FEAT_KEYMAP
5702     check_string_option(&buf->b_p_keymap);
5703 #endif
5704 #ifdef FEAT_QUICKFIX
5705     check_string_option(&buf->b_p_gp);
5706     check_string_option(&buf->b_p_mp);
5707     check_string_option(&buf->b_p_efm);
5708 #endif
5709     check_string_option(&buf->b_p_ep);
5710     check_string_option(&buf->b_p_path);
5711     check_string_option(&buf->b_p_tags);
5712     check_string_option(&buf->b_p_tc);
5713 #ifdef FEAT_INS_EXPAND
5714     check_string_option(&buf->b_p_dict);
5715     check_string_option(&buf->b_p_tsr);
5716 #endif
5717 #ifdef FEAT_LISP
5718     check_string_option(&buf->b_p_lw);
5719 #endif
5720     check_string_option(&buf->b_p_bkc);
5721     check_string_option(&buf->b_p_menc);
5722 #ifdef FEAT_VARTABS
5723     check_string_option(&buf->b_p_vsts);
5724     check_string_option(&buf->b_p_vts);
5725 #endif
5726 }
5727 
5728 /*
5729  * Free the string allocated for an option.
5730  * Checks for the string being empty_option. This may happen if we're out of
5731  * memory, vim_strsave() returned NULL, which was replaced by empty_option by
5732  * check_options().
5733  * Does NOT check for P_ALLOCED flag!
5734  */
5735     void
5736 free_string_option(char_u *p)
5737 {
5738     if (p != empty_option)
5739 	vim_free(p);
5740 }
5741 
5742     void
5743 clear_string_option(char_u **pp)
5744 {
5745     if (*pp != empty_option)
5746 	vim_free(*pp);
5747     *pp = empty_option;
5748 }
5749 
5750     static void
5751 check_string_option(char_u **pp)
5752 {
5753     if (*pp == NULL)
5754 	*pp = empty_option;
5755 }
5756 
5757 /*
5758  * Return the option index found by a pointer into term_strings[].
5759  * Return -1 if not found.
5760  */
5761     int
5762 get_term_opt_idx(char_u **p)
5763 {
5764     int opt_idx;
5765 
5766     for (opt_idx = 1; options[opt_idx].fullname != NULL; opt_idx++)
5767 	if (options[opt_idx].var == (char_u *)p)
5768 	    return opt_idx;
5769     return -1; // cannot happen: didn't find it!
5770 }
5771 
5772 /*
5773  * Mark a terminal option as allocated, found by a pointer into term_strings[].
5774  * Return the option index or -1 if not found.
5775  */
5776     int
5777 set_term_option_alloced(char_u **p)
5778 {
5779     int		opt_idx = get_term_opt_idx(p);
5780 
5781     if (opt_idx >= 0)
5782 	options[opt_idx].flags |= P_ALLOCED;
5783     return opt_idx;
5784 }
5785 
5786 #if defined(FEAT_EVAL) || defined(PROTO)
5787 /*
5788  * Return TRUE when option "opt" was set from a modeline or in secure mode.
5789  * Return FALSE when it wasn't.
5790  * Return -1 for an unknown option.
5791  */
5792     int
5793 was_set_insecurely(char_u *opt, int opt_flags)
5794 {
5795     int	    idx = findoption(opt);
5796     long_u  *flagp;
5797 
5798     if (idx >= 0)
5799     {
5800 	flagp = insecure_flag(idx, opt_flags);
5801 	return (*flagp & P_INSECURE) != 0;
5802     }
5803     internal_error("was_set_insecurely()");
5804     return -1;
5805 }
5806 
5807 /*
5808  * Get a pointer to the flags used for the P_INSECURE flag of option
5809  * "opt_idx".  For some local options a local flags field is used.
5810  */
5811     static long_u *
5812 insecure_flag(int opt_idx, int opt_flags)
5813 {
5814     if (opt_flags & OPT_LOCAL)
5815 	switch ((int)options[opt_idx].indir)
5816 	{
5817 #ifdef FEAT_STL_OPT
5818 	    case PV_STL:	return &curwin->w_p_stl_flags;
5819 #endif
5820 #ifdef FEAT_EVAL
5821 # ifdef FEAT_FOLDING
5822 	    case PV_FDE:	return &curwin->w_p_fde_flags;
5823 	    case PV_FDT:	return &curwin->w_p_fdt_flags;
5824 # endif
5825 # ifdef FEAT_BEVAL
5826 	    case PV_BEXPR:	return &curbuf->b_p_bexpr_flags;
5827 # endif
5828 # if defined(FEAT_CINDENT)
5829 	    case PV_INDE:	return &curbuf->b_p_inde_flags;
5830 # endif
5831 	    case PV_FEX:	return &curbuf->b_p_fex_flags;
5832 # ifdef FEAT_FIND_ID
5833 	    case PV_INEX:	return &curbuf->b_p_inex_flags;
5834 # endif
5835 #endif
5836 	}
5837 
5838     /* Nothing special, return global flags field. */
5839     return &options[opt_idx].flags;
5840 }
5841 #endif
5842 
5843 #ifdef FEAT_TITLE
5844 /*
5845  * Redraw the window title and/or tab page text later.
5846  */
5847 static void redraw_titles(void)
5848 {
5849     need_maketitle = TRUE;
5850     redraw_tabline = TRUE;
5851 }
5852 #endif
5853 
5854 /*
5855  * Set a string option to a new value (without checking the effect).
5856  * The string is copied into allocated memory.
5857  * if ("opt_idx" == -1) "name" is used, otherwise "opt_idx" is used.
5858  * When "set_sid" is zero set the scriptID to current_sctx.sc_sid.  When
5859  * "set_sid" is SID_NONE don't set the scriptID.  Otherwise set the scriptID to
5860  * "set_sid".
5861  */
5862     void
5863 set_string_option_direct(
5864     char_u	*name,
5865     int		opt_idx,
5866     char_u	*val,
5867     int		opt_flags,	/* OPT_FREE, OPT_LOCAL and/or OPT_GLOBAL */
5868     int		set_sid UNUSED)
5869 {
5870     char_u	*s;
5871     char_u	**varp;
5872     int		both = (opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0;
5873     int		idx = opt_idx;
5874 
5875     if (idx == -1)		/* use name */
5876     {
5877 	idx = findoption(name);
5878 	if (idx < 0)	/* not found (should not happen) */
5879 	{
5880 	    semsg(_(e_intern2), "set_string_option_direct()");
5881 	    siemsg(_("For option %s"), name);
5882 	    return;
5883 	}
5884     }
5885 
5886     if (options[idx].var == NULL)	/* can't set hidden option */
5887 	return;
5888 
5889     s = vim_strsave(val);
5890     if (s != NULL)
5891     {
5892 	varp = (char_u **)get_varp_scope(&(options[idx]),
5893 					       both ? OPT_LOCAL : opt_flags);
5894 	if ((opt_flags & OPT_FREE) && (options[idx].flags & P_ALLOCED))
5895 	    free_string_option(*varp);
5896 	*varp = s;
5897 
5898 	/* For buffer/window local option may also set the global value. */
5899 	if (both)
5900 	    set_string_option_global(idx, varp);
5901 
5902 	options[idx].flags |= P_ALLOCED;
5903 
5904 	/* When setting both values of a global option with a local value,
5905 	 * make the local value empty, so that the global value is used. */
5906 	if (((int)options[idx].indir & PV_BOTH) && both)
5907 	{
5908 	    free_string_option(*varp);
5909 	    *varp = empty_option;
5910 	}
5911 # ifdef FEAT_EVAL
5912 	if (set_sid != SID_NONE)
5913 	{
5914 	    sctx_T script_ctx;
5915 
5916 	    if (set_sid == 0)
5917 		script_ctx = current_sctx;
5918 	    else
5919 	    {
5920 		script_ctx.sc_sid = set_sid;
5921 		script_ctx.sc_seq = 0;
5922 		script_ctx.sc_lnum = 0;
5923 	    }
5924 	    set_option_sctx_idx(idx, opt_flags, script_ctx);
5925 	}
5926 # endif
5927     }
5928 }
5929 
5930 /*
5931  * Set global value for string option when it's a local option.
5932  */
5933     static void
5934 set_string_option_global(
5935     int		opt_idx,	/* option index */
5936     char_u	**varp)		/* pointer to option variable */
5937 {
5938     char_u	**p, *s;
5939 
5940     /* the global value is always allocated */
5941     if (options[opt_idx].var == VAR_WIN)
5942 	p = (char_u **)GLOBAL_WO(varp);
5943     else
5944 	p = (char_u **)options[opt_idx].var;
5945     if (options[opt_idx].indir != PV_NONE
5946 	    && p != varp
5947 	    && (s = vim_strsave(*varp)) != NULL)
5948     {
5949 	free_string_option(*p);
5950 	*p = s;
5951     }
5952 }
5953 
5954 /*
5955  * Set a string option to a new value, and handle the effects.
5956  *
5957  * Returns NULL on success or error message on error.
5958  */
5959     static char *
5960 set_string_option(
5961     int		opt_idx,
5962     char_u	*value,
5963     int		opt_flags)	/* OPT_LOCAL and/or OPT_GLOBAL */
5964 {
5965     char_u	*s;
5966     char_u	**varp;
5967     char_u	*oldval;
5968 #if defined(FEAT_EVAL)
5969     char_u	*saved_oldval = NULL;
5970     char_u	*saved_newval = NULL;
5971 #endif
5972     char	*r = NULL;
5973     int		value_checked = FALSE;
5974 
5975     if (options[opt_idx].var == NULL)	/* don't set hidden option */
5976 	return NULL;
5977 
5978     s = vim_strsave(value);
5979     if (s != NULL)
5980     {
5981 	varp = (char_u **)get_varp_scope(&(options[opt_idx]),
5982 		(opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0
5983 		    ? (((int)options[opt_idx].indir & PV_BOTH)
5984 			? OPT_GLOBAL : OPT_LOCAL)
5985 		    : opt_flags);
5986 	oldval = *varp;
5987 	*varp = s;
5988 
5989 #if defined(FEAT_EVAL)
5990 	if (!starting
5991 # ifdef FEAT_CRYPT
5992 		&& options[opt_idx].indir != PV_KEY
5993 # endif
5994 		)
5995 	{
5996 	    saved_oldval = vim_strsave(oldval);
5997 	    saved_newval = vim_strsave(s);
5998 	}
5999 #endif
6000 	if ((r = did_set_string_option(opt_idx, varp, TRUE, oldval, NULL,
6001 					   opt_flags, &value_checked)) == NULL)
6002 	    did_set_option(opt_idx, opt_flags, TRUE, value_checked);
6003 
6004 #if defined(FEAT_EVAL)
6005 	/* call autocommand after handling side effects */
6006 	if (r == NULL)
6007 	    trigger_optionsset_string(opt_idx, opt_flags,
6008 						   saved_oldval, saved_newval);
6009 	vim_free(saved_oldval);
6010 	vim_free(saved_newval);
6011 #endif
6012     }
6013     return r;
6014 }
6015 
6016 /*
6017  * Return TRUE if "val" is a valid 'filetype' name.
6018  * Also used for 'syntax' and 'keymap'.
6019  */
6020     static int
6021 valid_filetype(char_u *val)
6022 {
6023     char_u *s;
6024 
6025     for (s = val; *s != NUL; ++s)
6026 	if (!ASCII_ISALNUM(*s) && vim_strchr((char_u *)".-_", *s) == NULL)
6027 	    return FALSE;
6028     return TRUE;
6029 }
6030 
6031 /*
6032  * Handle string options that need some action to perform when changed.
6033  * Returns NULL for success, or an error message for an error.
6034  */
6035     static char *
6036 did_set_string_option(
6037     int		opt_idx,		// index in options[] table
6038     char_u	**varp,			// pointer to the option variable
6039     int		new_value_alloced,	// new value was allocated
6040     char_u	*oldval,		// previous value of the option
6041     char	*errbuf,		// buffer for errors, or NULL
6042     int		opt_flags,		// OPT_LOCAL and/or OPT_GLOBAL
6043     int		*value_checked)		// value was checked to be save, no
6044 					// need to set P_INSECURE
6045 {
6046     char	*errmsg = NULL;
6047     char_u	*s, *p;
6048     int		did_chartab = FALSE;
6049     char_u	**gvarp;
6050     long_u	free_oldval = (options[opt_idx].flags & P_ALLOCED);
6051 #ifdef FEAT_GUI
6052     /* set when changing an option that only requires a redraw in the GUI */
6053     int		redraw_gui_only = FALSE;
6054 #endif
6055     int		value_changed = FALSE;
6056 #if defined(FEAT_VTP) && defined(FEAT_TERMGUICOLORS)
6057     int		did_swaptcap = FALSE;
6058 #endif
6059 
6060     /* Get the global option to compare with, otherwise we would have to check
6061      * two values for all local options. */
6062     gvarp = (char_u **)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL);
6063 
6064     /* Disallow changing some options from secure mode */
6065     if ((secure
6066 #ifdef HAVE_SANDBOX
6067 		|| sandbox != 0
6068 #endif
6069 		) && (options[opt_idx].flags & P_SECURE))
6070     {
6071 	errmsg = e_secure;
6072     }
6073 
6074     // Check for a "normal" directory or file name in some options.  Disallow a
6075     // path separator (slash and/or backslash), wildcards and characters that
6076     // are often illegal in a file name. Be more permissive if "secure" is off.
6077     else if (((options[opt_idx].flags & P_NFNAME)
6078 		    && vim_strpbrk(*varp, (char_u *)(secure
6079 			    ? "/\\*?[|;&<>\r\n" : "/\\*?[<>\r\n")) != NULL)
6080 	  || ((options[opt_idx].flags & P_NDNAME)
6081 		    && vim_strpbrk(*varp, (char_u *)"*?[|;&<>\r\n") != NULL))
6082     {
6083 	errmsg = e_invarg;
6084     }
6085 
6086     /* 'term' */
6087     else if (varp == &T_NAME)
6088     {
6089 	if (T_NAME[0] == NUL)
6090 	    errmsg = N_("E529: Cannot set 'term' to empty string");
6091 #ifdef FEAT_GUI
6092 	if (gui.in_use)
6093 	    errmsg = N_("E530: Cannot change term in GUI");
6094 	else if (term_is_gui(T_NAME))
6095 	    errmsg = N_("E531: Use \":gui\" to start the GUI");
6096 #endif
6097 	else if (set_termname(T_NAME) == FAIL)
6098 	    errmsg = N_("E522: Not found in termcap");
6099 	else
6100 	{
6101 	    /* Screen colors may have changed. */
6102 	    redraw_later_clear();
6103 
6104 	    /* Both 'term' and 'ttytype' point to T_NAME, only set the
6105 	     * P_ALLOCED flag on 'term'. */
6106 	    opt_idx = findoption((char_u *)"term");
6107 	    free_oldval = (options[opt_idx].flags & P_ALLOCED);
6108 	}
6109     }
6110 
6111     /* 'backupcopy' */
6112     else if (gvarp == &p_bkc)
6113     {
6114 	char_u		*bkc = p_bkc;
6115 	unsigned int	*flags = &bkc_flags;
6116 
6117 	if (opt_flags & OPT_LOCAL)
6118 	{
6119 	    bkc = curbuf->b_p_bkc;
6120 	    flags = &curbuf->b_bkc_flags;
6121 	}
6122 
6123 	if ((opt_flags & OPT_LOCAL) && *bkc == NUL)
6124 	    /* make the local value empty: use the global value */
6125 	    *flags = 0;
6126 	else
6127 	{
6128 	    if (opt_strings_flags(bkc, p_bkc_values, flags, TRUE) != OK)
6129 		errmsg = e_invarg;
6130 	    if ((((int)*flags & BKC_AUTO) != 0)
6131 		    + (((int)*flags & BKC_YES) != 0)
6132 		    + (((int)*flags & BKC_NO) != 0) != 1)
6133 	    {
6134 		/* Must have exactly one of "auto", "yes"  and "no". */
6135 		(void)opt_strings_flags(oldval, p_bkc_values, flags, TRUE);
6136 		errmsg = e_invarg;
6137 	    }
6138 	}
6139     }
6140 
6141     /* 'backupext' and 'patchmode' */
6142     else if (varp == &p_bex || varp == &p_pm)
6143     {
6144 	if (STRCMP(*p_bex == '.' ? p_bex + 1 : p_bex,
6145 		     *p_pm == '.' ? p_pm + 1 : p_pm) == 0)
6146 	    errmsg = N_("E589: 'backupext' and 'patchmode' are equal");
6147     }
6148 #ifdef FEAT_LINEBREAK
6149     /* 'breakindentopt' */
6150     else if (varp == &curwin->w_p_briopt)
6151     {
6152 	if (briopt_check(curwin) == FAIL)
6153 	    errmsg = e_invarg;
6154     }
6155 #endif
6156 
6157     /*
6158      * 'isident', 'iskeyword', 'isprint or 'isfname' option: refill g_chartab[]
6159      * If the new option is invalid, use old value.  'lisp' option: refill
6160      * g_chartab[] for '-' char
6161      */
6162     else if (  varp == &p_isi
6163 	    || varp == &(curbuf->b_p_isk)
6164 	    || varp == &p_isp
6165 	    || varp == &p_isf)
6166     {
6167 	if (init_chartab() == FAIL)
6168 	{
6169 	    did_chartab = TRUE;	    /* need to restore it below */
6170 	    errmsg = e_invarg;	    /* error in value */
6171 	}
6172     }
6173 
6174     /* 'helpfile' */
6175     else if (varp == &p_hf)
6176     {
6177 	/* May compute new values for $VIM and $VIMRUNTIME */
6178 	if (didset_vim)
6179 	{
6180 	    vim_setenv((char_u *)"VIM", (char_u *)"");
6181 	    didset_vim = FALSE;
6182 	}
6183 	if (didset_vimruntime)
6184 	{
6185 	    vim_setenv((char_u *)"VIMRUNTIME", (char_u *)"");
6186 	    didset_vimruntime = FALSE;
6187 	}
6188     }
6189 
6190 #ifdef FEAT_SYN_HL
6191     /* 'colorcolumn' */
6192     else if (varp == &curwin->w_p_cc)
6193 	errmsg = check_colorcolumn(curwin);
6194 #endif
6195 
6196 #ifdef FEAT_MULTI_LANG
6197     /* 'helplang' */
6198     else if (varp == &p_hlg)
6199     {
6200 	/* Check for "", "ab", "ab,cd", etc. */
6201 	for (s = p_hlg; *s != NUL; s += 3)
6202 	{
6203 	    if (s[1] == NUL || ((s[2] != ',' || s[3] == NUL) && s[2] != NUL))
6204 	    {
6205 		errmsg = e_invarg;
6206 		break;
6207 	    }
6208 	    if (s[2] == NUL)
6209 		break;
6210 	}
6211     }
6212 #endif
6213 
6214     /* 'highlight' */
6215     else if (varp == &p_hl)
6216     {
6217 	if (highlight_changed() == FAIL)
6218 	    errmsg = e_invarg;	/* invalid flags */
6219     }
6220 
6221     /* 'nrformats' */
6222     else if (gvarp == &p_nf)
6223     {
6224 	if (check_opt_strings(*varp, p_nf_values, TRUE) != OK)
6225 	    errmsg = e_invarg;
6226     }
6227 
6228 #ifdef FEAT_SESSION
6229     /* 'sessionoptions' */
6230     else if (varp == &p_ssop)
6231     {
6232 	if (opt_strings_flags(p_ssop, p_ssop_values, &ssop_flags, TRUE) != OK)
6233 	    errmsg = e_invarg;
6234 	if ((ssop_flags & SSOP_CURDIR) && (ssop_flags & SSOP_SESDIR))
6235 	{
6236 	    /* Don't allow both "sesdir" and "curdir". */
6237 	    (void)opt_strings_flags(oldval, p_ssop_values, &ssop_flags, TRUE);
6238 	    errmsg = e_invarg;
6239 	}
6240     }
6241     /* 'viewoptions' */
6242     else if (varp == &p_vop)
6243     {
6244 	if (opt_strings_flags(p_vop, p_ssop_values, &vop_flags, TRUE) != OK)
6245 	    errmsg = e_invarg;
6246     }
6247 #endif
6248 
6249     /* 'scrollopt' */
6250     else if (varp == &p_sbo)
6251     {
6252 	if (check_opt_strings(p_sbo, p_scbopt_values, TRUE) != OK)
6253 	    errmsg = e_invarg;
6254     }
6255 
6256     /* 'ambiwidth' */
6257     else if (varp == &p_ambw || varp == &p_emoji)
6258     {
6259 	if (check_opt_strings(p_ambw, p_ambw_values, FALSE) != OK)
6260 	    errmsg = e_invarg;
6261 	else if (set_chars_option(&p_lcs) != NULL)
6262 	    errmsg = _("E834: Conflicts with value of 'listchars'");
6263 	else if (set_chars_option(&p_fcs) != NULL)
6264 	    errmsg = _("E835: Conflicts with value of 'fillchars'");
6265     }
6266 
6267     /* 'background' */
6268     else if (varp == &p_bg)
6269     {
6270 	if (check_opt_strings(p_bg, p_bg_values, FALSE) == OK)
6271 	{
6272 #ifdef FEAT_EVAL
6273 	    int dark = (*p_bg == 'd');
6274 #endif
6275 
6276 	    init_highlight(FALSE, FALSE);
6277 
6278 #ifdef FEAT_EVAL
6279 	    if (dark != (*p_bg == 'd')
6280 			  && get_var_value((char_u *)"g:colors_name") != NULL)
6281 	    {
6282 		/* The color scheme must have set 'background' back to another
6283 		 * value, that's not what we want here.  Disable the color
6284 		 * scheme and set the colors again. */
6285 		do_unlet((char_u *)"g:colors_name", TRUE);
6286 		free_string_option(p_bg);
6287 		p_bg = vim_strsave((char_u *)(dark ? "dark" : "light"));
6288 		check_string_option(&p_bg);
6289 		init_highlight(FALSE, FALSE);
6290 	    }
6291 #endif
6292 	}
6293 	else
6294 	    errmsg = e_invarg;
6295     }
6296 
6297     /* 'wildmode' */
6298     else if (varp == &p_wim)
6299     {
6300 	if (check_opt_wim() == FAIL)
6301 	    errmsg = e_invarg;
6302     }
6303 
6304 #ifdef FEAT_CMDL_COMPL
6305     /* 'wildoptions' */
6306     else if (varp == &p_wop)
6307     {
6308 	if (check_opt_strings(p_wop, p_wop_values, TRUE) != OK)
6309 	    errmsg = e_invarg;
6310     }
6311 #endif
6312 
6313 #ifdef FEAT_WAK
6314     /* 'winaltkeys' */
6315     else if (varp == &p_wak)
6316     {
6317 	if (*p_wak == NUL
6318 		|| check_opt_strings(p_wak, p_wak_values, FALSE) != OK)
6319 	    errmsg = e_invarg;
6320 # ifdef FEAT_MENU
6321 #  ifdef FEAT_GUI_MOTIF
6322 	else if (gui.in_use)
6323 	    gui_motif_set_mnemonics(p_wak[0] == 'y' || p_wak[0] == 'm');
6324 #  else
6325 #   ifdef FEAT_GUI_GTK
6326 	else if (gui.in_use)
6327 	    gui_gtk_set_mnemonics(p_wak[0] == 'y' || p_wak[0] == 'm');
6328 #   endif
6329 #  endif
6330 # endif
6331     }
6332 #endif
6333 
6334     /* 'eventignore' */
6335     else if (varp == &p_ei)
6336     {
6337 	if (check_ei() == FAIL)
6338 	    errmsg = e_invarg;
6339     }
6340 
6341     /* 'encoding', 'fileencoding', 'termencoding' and 'makeencoding' */
6342     else if (varp == &p_enc || gvarp == &p_fenc || varp == &p_tenc
6343 							   || gvarp == &p_menc)
6344     {
6345 	if (gvarp == &p_fenc)
6346 	{
6347 	    if (!curbuf->b_p_ma && opt_flags != OPT_GLOBAL)
6348 		errmsg = e_modifiable;
6349 	    else if (vim_strchr(*varp, ',') != NULL)
6350 		/* No comma allowed in 'fileencoding'; catches confusing it
6351 		 * with 'fileencodings'. */
6352 		errmsg = e_invarg;
6353 	    else
6354 	    {
6355 #ifdef FEAT_TITLE
6356 		/* May show a "+" in the title now. */
6357 		redraw_titles();
6358 #endif
6359 		/* Add 'fileencoding' to the swap file. */
6360 		ml_setflags(curbuf);
6361 	    }
6362 	}
6363 	if (errmsg == NULL)
6364 	{
6365 	    /* canonize the value, so that STRCMP() can be used on it */
6366 	    p = enc_canonize(*varp);
6367 	    if (p != NULL)
6368 	    {
6369 		vim_free(*varp);
6370 		*varp = p;
6371 	    }
6372 	    if (varp == &p_enc)
6373 	    {
6374 		errmsg = mb_init();
6375 #ifdef FEAT_TITLE
6376 		redraw_titles();
6377 #endif
6378 	    }
6379 	}
6380 
6381 #if defined(FEAT_GUI_GTK)
6382 	if (errmsg == NULL && varp == &p_tenc && gui.in_use)
6383 	{
6384 	    /* GTK+ 2 uses only a single encoding, and that is UTF-8. */
6385 	    if (STRCMP(p_tenc, "utf-8") != 0)
6386 		errmsg = N_("E617: Cannot be changed in the GTK+ 2 GUI");
6387 	}
6388 #endif
6389 
6390 	if (errmsg == NULL)
6391 	{
6392 #ifdef FEAT_KEYMAP
6393 	    /* When 'keymap' is used and 'encoding' changes, reload the keymap
6394 	     * (with another encoding). */
6395 	    if (varp == &p_enc && *curbuf->b_p_keymap != NUL)
6396 		(void)keymap_init();
6397 #endif
6398 
6399 	    /* When 'termencoding' is not empty and 'encoding' changes or when
6400 	     * 'termencoding' changes, need to setup for keyboard input and
6401 	     * display output conversion. */
6402 	    if (((varp == &p_enc && *p_tenc != NUL) || varp == &p_tenc))
6403 	    {
6404 		if (convert_setup(&input_conv, p_tenc, p_enc) == FAIL
6405 			|| convert_setup(&output_conv, p_enc, p_tenc) == FAIL)
6406 		{
6407 		    semsg(_("E950: Cannot convert between %s and %s"),
6408 			    p_tenc, p_enc);
6409 		    errmsg = e_invarg;
6410 		}
6411 	    }
6412 
6413 #if defined(WIN3264)
6414 	    /* $HOME may have characters in active code page. */
6415 	    if (varp == &p_enc)
6416 		init_homedir();
6417 #endif
6418 	}
6419     }
6420 
6421 #if defined(FEAT_POSTSCRIPT)
6422     else if (varp == &p_penc)
6423     {
6424 	/* Canonize printencoding if VIM standard one */
6425 	p = enc_canonize(p_penc);
6426 	if (p != NULL)
6427 	{
6428 	    vim_free(p_penc);
6429 	    p_penc = p;
6430 	}
6431 	else
6432 	{
6433 	    /* Ensure lower case and '-' for '_' */
6434 	    for (s = p_penc; *s != NUL; s++)
6435 	    {
6436 		if (*s == '_')
6437 		    *s = '-';
6438 		else
6439 		    *s = TOLOWER_ASC(*s);
6440 	    }
6441 	}
6442     }
6443 #endif
6444 
6445 #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
6446     else if (varp == &p_imak)
6447     {
6448 	if (!im_xim_isvalid_imactivate())
6449 	    errmsg = e_invarg;
6450     }
6451 #endif
6452 
6453 #ifdef FEAT_KEYMAP
6454     else if (varp == &curbuf->b_p_keymap)
6455     {
6456 	if (!valid_filetype(*varp))
6457 	    errmsg = e_invarg;
6458 	else
6459 	{
6460 	    int	    secure_save = secure;
6461 
6462 	    // Reset the secure flag, since the value of 'keymap' has
6463 	    // been checked to be safe.
6464 	    secure = 0;
6465 
6466 	    // load or unload key mapping tables
6467 	    errmsg = keymap_init();
6468 
6469 	    secure = secure_save;
6470 
6471 	    // Since we check the value, there is no need to set P_INSECURE,
6472 	    // even when the value comes from a modeline.
6473 	    *value_checked = TRUE;
6474 	}
6475 
6476 	if (errmsg == NULL)
6477 	{
6478 	    if (*curbuf->b_p_keymap != NUL)
6479 	    {
6480 		/* Installed a new keymap, switch on using it. */
6481 		curbuf->b_p_iminsert = B_IMODE_LMAP;
6482 		if (curbuf->b_p_imsearch != B_IMODE_USE_INSERT)
6483 		    curbuf->b_p_imsearch = B_IMODE_LMAP;
6484 	    }
6485 	    else
6486 	    {
6487 		/* Cleared the keymap, may reset 'iminsert' and 'imsearch'. */
6488 		if (curbuf->b_p_iminsert == B_IMODE_LMAP)
6489 		    curbuf->b_p_iminsert = B_IMODE_NONE;
6490 		if (curbuf->b_p_imsearch == B_IMODE_LMAP)
6491 		    curbuf->b_p_imsearch = B_IMODE_USE_INSERT;
6492 	    }
6493 	    if ((opt_flags & OPT_LOCAL) == 0)
6494 	    {
6495 		set_iminsert_global();
6496 		set_imsearch_global();
6497 	    }
6498 	    status_redraw_curbuf();
6499 	}
6500     }
6501 #endif
6502 
6503     /* 'fileformat' */
6504     else if (gvarp == &p_ff)
6505     {
6506 	if (!curbuf->b_p_ma && !(opt_flags & OPT_GLOBAL))
6507 	    errmsg = e_modifiable;
6508 	else if (check_opt_strings(*varp, p_ff_values, FALSE) != OK)
6509 	    errmsg = e_invarg;
6510 	else
6511 	{
6512 	    /* may also change 'textmode' */
6513 	    if (get_fileformat(curbuf) == EOL_DOS)
6514 		curbuf->b_p_tx = TRUE;
6515 	    else
6516 		curbuf->b_p_tx = FALSE;
6517 #ifdef FEAT_TITLE
6518 	    redraw_titles();
6519 #endif
6520 	    /* update flag in swap file */
6521 	    ml_setflags(curbuf);
6522 	    /* Redraw needed when switching to/from "mac": a CR in the text
6523 	     * will be displayed differently. */
6524 	    if (get_fileformat(curbuf) == EOL_MAC || *oldval == 'm')
6525 		redraw_curbuf_later(NOT_VALID);
6526 	}
6527     }
6528 
6529     /* 'fileformats' */
6530     else if (varp == &p_ffs)
6531     {
6532 	if (check_opt_strings(p_ffs, p_ff_values, TRUE) != OK)
6533 	    errmsg = e_invarg;
6534 	else
6535 	{
6536 	    /* also change 'textauto' */
6537 	    if (*p_ffs == NUL)
6538 		p_ta = FALSE;
6539 	    else
6540 		p_ta = TRUE;
6541 	}
6542     }
6543 
6544 #if defined(FEAT_CRYPT)
6545     /* 'cryptkey' */
6546     else if (gvarp == &p_key)
6547     {
6548 # if defined(FEAT_CMDHIST)
6549 	/* Make sure the ":set" command doesn't show the new value in the
6550 	 * history. */
6551 	remove_key_from_history();
6552 # endif
6553 	if (STRCMP(curbuf->b_p_key, oldval) != 0)
6554 	    /* Need to update the swapfile. */
6555 	    ml_set_crypt_key(curbuf, oldval,
6556 			      *curbuf->b_p_cm == NUL ? p_cm : curbuf->b_p_cm);
6557     }
6558 
6559     else if (gvarp == &p_cm)
6560     {
6561 	if (opt_flags & OPT_LOCAL)
6562 	    p = curbuf->b_p_cm;
6563 	else
6564 	    p = p_cm;
6565 	if (check_opt_strings(p, p_cm_values, TRUE) != OK)
6566 	    errmsg = e_invarg;
6567 	else if (crypt_self_test() == FAIL)
6568 	    errmsg = e_invarg;
6569 	else
6570 	{
6571 	    /* When setting the global value to empty, make it "zip". */
6572 	    if (*p_cm == NUL)
6573 	    {
6574 		if (new_value_alloced)
6575 		    free_string_option(p_cm);
6576 		p_cm = vim_strsave((char_u *)"zip");
6577 		new_value_alloced = TRUE;
6578 	    }
6579 	    /* When using ":set cm=name" the local value is going to be empty.
6580 	     * Do that here, otherwise the crypt functions will still use the
6581 	     * local value. */
6582 	    if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0)
6583 	    {
6584 		free_string_option(curbuf->b_p_cm);
6585 		curbuf->b_p_cm = empty_option;
6586 	    }
6587 
6588 	    /* Need to update the swapfile when the effective method changed.
6589 	     * Set "s" to the effective old value, "p" to the effective new
6590 	     * method and compare. */
6591 	    if ((opt_flags & OPT_LOCAL) && *oldval == NUL)
6592 		s = p_cm;  /* was previously using the global value */
6593 	    else
6594 		s = oldval;
6595 	    if (*curbuf->b_p_cm == NUL)
6596 		p = p_cm;  /* is now using the global value */
6597 	    else
6598 		p = curbuf->b_p_cm;
6599 	    if (STRCMP(s, p) != 0)
6600 		ml_set_crypt_key(curbuf, curbuf->b_p_key, s);
6601 
6602 	    /* If the global value changes need to update the swapfile for all
6603 	     * buffers using that value. */
6604 	    if ((opt_flags & OPT_GLOBAL) && STRCMP(p_cm, oldval) != 0)
6605 	    {
6606 		buf_T	*buf;
6607 
6608 		FOR_ALL_BUFFERS(buf)
6609 		    if (buf != curbuf && *buf->b_p_cm == NUL)
6610 			ml_set_crypt_key(buf, buf->b_p_key, oldval);
6611 	    }
6612 	}
6613     }
6614 #endif
6615 
6616     /* 'matchpairs' */
6617     else if (gvarp == &p_mps)
6618     {
6619 	if (has_mbyte)
6620 	{
6621 	    for (p = *varp; *p != NUL; ++p)
6622 	    {
6623 		int x2 = -1;
6624 		int x3 = -1;
6625 
6626 		if (*p != NUL)
6627 		    p += mb_ptr2len(p);
6628 		if (*p != NUL)
6629 		    x2 = *p++;
6630 		if (*p != NUL)
6631 		{
6632 		    x3 = mb_ptr2char(p);
6633 		    p += mb_ptr2len(p);
6634 		}
6635 		if (x2 != ':' || x3 == -1 || (*p != NUL && *p != ','))
6636 		{
6637 		    errmsg = e_invarg;
6638 		    break;
6639 		}
6640 		if (*p == NUL)
6641 		    break;
6642 	    }
6643 	}
6644 	else
6645 	{
6646 	    /* Check for "x:y,x:y" */
6647 	    for (p = *varp; *p != NUL; p += 4)
6648 	    {
6649 		if (p[1] != ':' || p[2] == NUL || (p[3] != NUL && p[3] != ','))
6650 		{
6651 		    errmsg = e_invarg;
6652 		    break;
6653 		}
6654 		if (p[3] == NUL)
6655 		    break;
6656 	    }
6657 	}
6658     }
6659 
6660 #ifdef FEAT_COMMENTS
6661     /* 'comments' */
6662     else if (gvarp == &p_com)
6663     {
6664 	for (s = *varp; *s; )
6665 	{
6666 	    while (*s && *s != ':')
6667 	    {
6668 		if (vim_strchr((char_u *)COM_ALL, *s) == NULL
6669 					     && !VIM_ISDIGIT(*s) && *s != '-')
6670 		{
6671 		    errmsg = illegal_char(errbuf, *s);
6672 		    break;
6673 		}
6674 		++s;
6675 	    }
6676 	    if (*s++ == NUL)
6677 		errmsg = N_("E524: Missing colon");
6678 	    else if (*s == ',' || *s == NUL)
6679 		errmsg = N_("E525: Zero length string");
6680 	    if (errmsg != NULL)
6681 		break;
6682 	    while (*s && *s != ',')
6683 	    {
6684 		if (*s == '\\' && s[1] != NUL)
6685 		    ++s;
6686 		++s;
6687 	    }
6688 	    s = skip_to_option_part(s);
6689 	}
6690     }
6691 #endif
6692 
6693     /* 'listchars' */
6694     else if (varp == &p_lcs)
6695     {
6696 	errmsg = set_chars_option(varp);
6697     }
6698 
6699     /* 'fillchars' */
6700     else if (varp == &p_fcs)
6701     {
6702 	errmsg = set_chars_option(varp);
6703     }
6704 
6705 #ifdef FEAT_CMDWIN
6706     /* 'cedit' */
6707     else if (varp == &p_cedit)
6708     {
6709 	errmsg = check_cedit();
6710     }
6711 #endif
6712 
6713     /* 'verbosefile' */
6714     else if (varp == &p_vfile)
6715     {
6716 	verbose_stop();
6717 	if (*p_vfile != NUL && verbose_open() == FAIL)
6718 	    errmsg = e_invarg;
6719     }
6720 
6721 #ifdef FEAT_VIMINFO
6722     /* 'viminfo' */
6723     else if (varp == &p_viminfo)
6724     {
6725 	for (s = p_viminfo; *s;)
6726 	{
6727 	    /* Check it's a valid character */
6728 	    if (vim_strchr((char_u *)"!\"%'/:<@cfhnrs", *s) == NULL)
6729 	    {
6730 		errmsg = illegal_char(errbuf, *s);
6731 		break;
6732 	    }
6733 	    if (*s == 'n')	/* name is always last one */
6734 	    {
6735 		break;
6736 	    }
6737 	    else if (*s == 'r') /* skip until next ',' */
6738 	    {
6739 		while (*++s && *s != ',')
6740 		    ;
6741 	    }
6742 	    else if (*s == '%')
6743 	    {
6744 		/* optional number */
6745 		while (vim_isdigit(*++s))
6746 		    ;
6747 	    }
6748 	    else if (*s == '!' || *s == 'h' || *s == 'c')
6749 		++s;		/* no extra chars */
6750 	    else		/* must have a number */
6751 	    {
6752 		while (vim_isdigit(*++s))
6753 		    ;
6754 
6755 		if (!VIM_ISDIGIT(*(s - 1)))
6756 		{
6757 		    if (errbuf != NULL)
6758 		    {
6759 			sprintf(errbuf, _("E526: Missing number after <%s>"),
6760 						    transchar_byte(*(s - 1)));
6761 			errmsg = errbuf;
6762 		    }
6763 		    else
6764 			errmsg = "";
6765 		    break;
6766 		}
6767 	    }
6768 	    if (*s == ',')
6769 		++s;
6770 	    else if (*s)
6771 	    {
6772 		if (errbuf != NULL)
6773 		    errmsg = N_("E527: Missing comma");
6774 		else
6775 		    errmsg = "";
6776 		break;
6777 	    }
6778 	}
6779 	if (*p_viminfo && errmsg == NULL && get_viminfo_parameter('\'') < 0)
6780 	    errmsg = N_("E528: Must specify a ' value");
6781     }
6782 #endif /* FEAT_VIMINFO */
6783 
6784     /* terminal options */
6785     else if (istermoption(&options[opt_idx]) && full_screen)
6786     {
6787 	/* ":set t_Co=0" and ":set t_Co=1" do ":set t_Co=" */
6788 	if (varp == &T_CCO)
6789 	{
6790 	    int colors = atoi((char *)T_CCO);
6791 
6792 	    /* Only reinitialize colors if t_Co value has really changed to
6793 	     * avoid expensive reload of colorscheme if t_Co is set to the
6794 	     * same value multiple times. */
6795 	    if (colors != t_colors)
6796 	    {
6797 		t_colors = colors;
6798 		if (t_colors <= 1)
6799 		{
6800 		    if (new_value_alloced)
6801 			vim_free(T_CCO);
6802 		    T_CCO = empty_option;
6803 		}
6804 #if defined(FEAT_VTP) && defined(FEAT_TERMGUICOLORS)
6805 		if (is_term_win32())
6806 		{
6807 		    swap_tcap();
6808 		    did_swaptcap = TRUE;
6809 		}
6810 #endif
6811 		/* We now have a different color setup, initialize it again. */
6812 		init_highlight(TRUE, FALSE);
6813 	    }
6814 	}
6815 	ttest(FALSE);
6816 	if (varp == &T_ME)
6817 	{
6818 	    out_str(T_ME);
6819 	    redraw_later(CLEAR);
6820 #if defined(WIN3264) && !defined(FEAT_GUI_W32)
6821 	    /* Since t_me has been set, this probably means that the user
6822 	     * wants to use this as default colors.  Need to reset default
6823 	     * background/foreground colors. */
6824 	    mch_set_normal_colors();
6825 #endif
6826 	}
6827 	if (varp == &T_BE && termcap_active)
6828 	{
6829 	    if (*T_BE == NUL)
6830 		/* When clearing t_BE we assume the user no longer wants
6831 		 * bracketed paste, thus disable it by writing t_BD. */
6832 		out_str(T_BD);
6833 	    else
6834 		out_str(T_BE);
6835 	}
6836     }
6837 
6838 #ifdef FEAT_LINEBREAK
6839     /* 'showbreak' */
6840     else if (varp == &p_sbr)
6841     {
6842 	for (s = p_sbr; *s; )
6843 	{
6844 	    if (ptr2cells(s) != 1)
6845 		errmsg = N_("E595: contains unprintable or wide character");
6846 	    MB_PTR_ADV(s);
6847 	}
6848     }
6849 #endif
6850 
6851 #ifdef FEAT_GUI
6852     /* 'guifont' */
6853     else if (varp == &p_guifont)
6854     {
6855 	if (gui.in_use)
6856 	{
6857 	    p = p_guifont;
6858 # if defined(FEAT_GUI_GTK)
6859 	    /*
6860 	     * Put up a font dialog and let the user select a new value.
6861 	     * If this is cancelled go back to the old value but don't
6862 	     * give an error message.
6863 	     */
6864 	    if (STRCMP(p, "*") == 0)
6865 	    {
6866 		p = gui_mch_font_dialog(oldval);
6867 
6868 		if (new_value_alloced)
6869 		    free_string_option(p_guifont);
6870 
6871 		p_guifont = (p != NULL) ? p : vim_strsave(oldval);
6872 		new_value_alloced = TRUE;
6873 	    }
6874 # endif
6875 	    if (p != NULL && gui_init_font(p_guifont, FALSE) != OK)
6876 	    {
6877 # if defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_PHOTON)
6878 		if (STRCMP(p_guifont, "*") == 0)
6879 		{
6880 		    /* Dialog was cancelled: Keep the old value without giving
6881 		     * an error message. */
6882 		    if (new_value_alloced)
6883 			free_string_option(p_guifont);
6884 		    p_guifont = vim_strsave(oldval);
6885 		    new_value_alloced = TRUE;
6886 		}
6887 		else
6888 # endif
6889 		    errmsg = N_("E596: Invalid font(s)");
6890 	    }
6891 	}
6892 	redraw_gui_only = TRUE;
6893     }
6894 # ifdef FEAT_XFONTSET
6895     else if (varp == &p_guifontset)
6896     {
6897 	if (STRCMP(p_guifontset, "*") == 0)
6898 	    errmsg = N_("E597: can't select fontset");
6899 	else if (gui.in_use && gui_init_font(p_guifontset, TRUE) != OK)
6900 	    errmsg = N_("E598: Invalid fontset");
6901 	redraw_gui_only = TRUE;
6902     }
6903 # endif
6904     else if (varp == &p_guifontwide)
6905     {
6906 	if (STRCMP(p_guifontwide, "*") == 0)
6907 	    errmsg = N_("E533: can't select wide font");
6908 	else if (gui_get_wide_font() == FAIL)
6909 	    errmsg = N_("E534: Invalid wide font");
6910 	redraw_gui_only = TRUE;
6911     }
6912 #endif
6913 
6914 #ifdef CURSOR_SHAPE
6915     /* 'guicursor' */
6916     else if (varp == &p_guicursor)
6917 	errmsg = parse_shape_opt(SHAPE_CURSOR);
6918 #endif
6919 
6920 #ifdef FEAT_MOUSESHAPE
6921     /* 'mouseshape' */
6922     else if (varp == &p_mouseshape)
6923     {
6924 	errmsg = parse_shape_opt(SHAPE_MOUSE);
6925 	update_mouseshape(-1);
6926     }
6927 #endif
6928 
6929 #ifdef FEAT_PRINTER
6930     else if (varp == &p_popt)
6931 	errmsg = parse_printoptions();
6932 # if defined(FEAT_POSTSCRIPT)
6933     else if (varp == &p_pmfn)
6934 	errmsg = parse_printmbfont();
6935 # endif
6936 #endif
6937 
6938 #ifdef FEAT_LANGMAP
6939     /* 'langmap' */
6940     else if (varp == &p_langmap)
6941 	langmap_set();
6942 #endif
6943 
6944 #ifdef FEAT_LINEBREAK
6945     /* 'breakat' */
6946     else if (varp == &p_breakat)
6947 	fill_breakat_flags();
6948 #endif
6949 
6950 #ifdef FEAT_TITLE
6951     /* 'titlestring' and 'iconstring' */
6952     else if (varp == &p_titlestring || varp == &p_iconstring)
6953     {
6954 # ifdef FEAT_STL_OPT
6955 	int	flagval = (varp == &p_titlestring) ? STL_IN_TITLE : STL_IN_ICON;
6956 
6957 	/* NULL => statusline syntax */
6958 	if (vim_strchr(*varp, '%') && check_stl_option(*varp) == NULL)
6959 	    stl_syntax |= flagval;
6960 	else
6961 	    stl_syntax &= ~flagval;
6962 # endif
6963 	did_set_title();
6964     }
6965 #endif
6966 
6967 #ifdef FEAT_GUI
6968     /* 'guioptions' */
6969     else if (varp == &p_go)
6970     {
6971 	gui_init_which_components(oldval);
6972 	redraw_gui_only = TRUE;
6973     }
6974 #endif
6975 
6976 #if defined(FEAT_GUI_TABLINE)
6977     /* 'guitablabel' */
6978     else if (varp == &p_gtl)
6979     {
6980 	redraw_tabline = TRUE;
6981 	redraw_gui_only = TRUE;
6982     }
6983     /* 'guitabtooltip' */
6984     else if (varp == &p_gtt)
6985     {
6986 	redraw_gui_only = TRUE;
6987     }
6988 #endif
6989 
6990 #if defined(FEAT_MOUSE_TTY) && (defined(UNIX) || defined(VMS))
6991     /* 'ttymouse' */
6992     else if (varp == &p_ttym)
6993     {
6994 	/* Switch the mouse off before changing the escape sequences used for
6995 	 * that. */
6996 	mch_setmouse(FALSE);
6997 	if (opt_strings_flags(p_ttym, p_ttym_values, &ttym_flags, FALSE) != OK)
6998 	    errmsg = e_invarg;
6999 	else
7000 	    check_mouse_termcode();
7001 	if (termcap_active)
7002 	    setmouse();		/* may switch it on again */
7003     }
7004 #endif
7005 
7006     /* 'selection' */
7007     else if (varp == &p_sel)
7008     {
7009 	if (*p_sel == NUL
7010 		|| check_opt_strings(p_sel, p_sel_values, FALSE) != OK)
7011 	    errmsg = e_invarg;
7012     }
7013 
7014     /* 'selectmode' */
7015     else if (varp == &p_slm)
7016     {
7017 	if (check_opt_strings(p_slm, p_slm_values, TRUE) != OK)
7018 	    errmsg = e_invarg;
7019     }
7020 
7021 #ifdef FEAT_BROWSE
7022     /* 'browsedir' */
7023     else if (varp == &p_bsdir)
7024     {
7025 	if (check_opt_strings(p_bsdir, p_bsdir_values, FALSE) != OK
7026 		&& !mch_isdir(p_bsdir))
7027 	    errmsg = e_invarg;
7028     }
7029 #endif
7030 
7031     /* 'keymodel' */
7032     else if (varp == &p_km)
7033     {
7034 	if (check_opt_strings(p_km, p_km_values, TRUE) != OK)
7035 	    errmsg = e_invarg;
7036 	else
7037 	{
7038 	    km_stopsel = (vim_strchr(p_km, 'o') != NULL);
7039 	    km_startsel = (vim_strchr(p_km, 'a') != NULL);
7040 	}
7041     }
7042 
7043     /* 'mousemodel' */
7044     else if (varp == &p_mousem)
7045     {
7046 	if (check_opt_strings(p_mousem, p_mousem_values, FALSE) != OK)
7047 	    errmsg = e_invarg;
7048 #if defined(FEAT_GUI_MOTIF) && defined(FEAT_MENU) && (XmVersion <= 1002)
7049 	else if (*p_mousem != *oldval)
7050 	    /* Changed from "extend" to "popup" or "popup_setpos" or vv: need
7051 	     * to create or delete the popup menus. */
7052 	    gui_motif_update_mousemodel(root_menu);
7053 #endif
7054     }
7055 
7056     /* 'switchbuf' */
7057     else if (varp == &p_swb)
7058     {
7059 	if (opt_strings_flags(p_swb, p_swb_values, &swb_flags, TRUE) != OK)
7060 	    errmsg = e_invarg;
7061     }
7062 
7063     /* 'debug' */
7064     else if (varp == &p_debug)
7065     {
7066 	if (check_opt_strings(p_debug, p_debug_values, TRUE) != OK)
7067 	    errmsg = e_invarg;
7068     }
7069 
7070     /* 'display' */
7071     else if (varp == &p_dy)
7072     {
7073 	if (opt_strings_flags(p_dy, p_dy_values, &dy_flags, TRUE) != OK)
7074 	    errmsg = e_invarg;
7075 	else
7076 	    (void)init_chartab();
7077 
7078     }
7079 
7080     /* 'eadirection' */
7081     else if (varp == &p_ead)
7082     {
7083 	if (check_opt_strings(p_ead, p_ead_values, FALSE) != OK)
7084 	    errmsg = e_invarg;
7085     }
7086 
7087 #ifdef FEAT_CLIPBOARD
7088     /* 'clipboard' */
7089     else if (varp == &p_cb)
7090 	errmsg = check_clipboard_option();
7091 #endif
7092 
7093 #ifdef FEAT_SPELL
7094     /* When 'spelllang' or 'spellfile' is set and there is a window for this
7095      * buffer in which 'spell' is set load the wordlists. */
7096     else if (varp == &(curwin->w_s->b_p_spl)
7097 	    || varp == &(curwin->w_s->b_p_spf))
7098     {
7099 	errmsg = did_set_spell_option(varp == &(curwin->w_s->b_p_spf));
7100     }
7101     /* When 'spellcapcheck' is set compile the regexp program. */
7102     else if (varp == &(curwin->w_s->b_p_spc))
7103     {
7104 	errmsg = compile_cap_prog(curwin->w_s);
7105     }
7106     /* 'spellsuggest' */
7107     else if (varp == &p_sps)
7108     {
7109 	if (spell_check_sps() != OK)
7110 	    errmsg = e_invarg;
7111     }
7112     /* 'mkspellmem' */
7113     else if (varp == &p_msm)
7114     {
7115 	if (spell_check_msm() != OK)
7116 	    errmsg = e_invarg;
7117     }
7118 #endif
7119 
7120     /* When 'bufhidden' is set, check for valid value. */
7121     else if (gvarp == &p_bh)
7122     {
7123 	if (check_opt_strings(curbuf->b_p_bh, p_bufhidden_values, FALSE) != OK)
7124 	    errmsg = e_invarg;
7125     }
7126 
7127     /* When 'buftype' is set, check for valid value. */
7128     else if (gvarp == &p_bt)
7129     {
7130 	if (check_opt_strings(curbuf->b_p_bt, p_buftype_values, FALSE) != OK)
7131 	    errmsg = e_invarg;
7132 	else
7133 	{
7134 	    if (curwin->w_status_height)
7135 	    {
7136 		curwin->w_redr_status = TRUE;
7137 		redraw_later(VALID);
7138 	    }
7139 	    curbuf->b_help = (curbuf->b_p_bt[0] == 'h');
7140 #ifdef FEAT_TITLE
7141 	    redraw_titles();
7142 #endif
7143 	}
7144     }
7145 
7146 #ifdef FEAT_STL_OPT
7147     /* 'statusline' or 'rulerformat' */
7148     else if (gvarp == &p_stl || varp == &p_ruf)
7149     {
7150 	int wid;
7151 
7152 	if (varp == &p_ruf)	/* reset ru_wid first */
7153 	    ru_wid = 0;
7154 	s = *varp;
7155 	if (varp == &p_ruf && *s == '%')
7156 	{
7157 	    /* set ru_wid if 'ruf' starts with "%99(" */
7158 	    if (*++s == '-')	/* ignore a '-' */
7159 		s++;
7160 	    wid = getdigits(&s);
7161 	    if (wid && *s == '(' && (errmsg = check_stl_option(p_ruf)) == NULL)
7162 		ru_wid = wid;
7163 	    else
7164 		errmsg = check_stl_option(p_ruf);
7165 	}
7166 	/* check 'statusline' only if it doesn't start with "%!" */
7167 	else if (varp == &p_ruf || s[0] != '%' || s[1] != '!')
7168 	    errmsg = check_stl_option(s);
7169 	if (varp == &p_ruf && errmsg == NULL)
7170 	    comp_col();
7171     }
7172 #endif
7173 
7174 #ifdef FEAT_INS_EXPAND
7175     /* check if it is a valid value for 'complete' -- Acevedo */
7176     else if (gvarp == &p_cpt)
7177     {
7178 	for (s = *varp; *s;)
7179 	{
7180 	    while (*s == ',' || *s == ' ')
7181 		s++;
7182 	    if (!*s)
7183 		break;
7184 	    if (vim_strchr((char_u *)".wbuksid]tU", *s) == NULL)
7185 	    {
7186 		errmsg = illegal_char(errbuf, *s);
7187 		break;
7188 	    }
7189 	    if (*++s != NUL && *s != ',' && *s != ' ')
7190 	    {
7191 		if (s[-1] == 'k' || s[-1] == 's')
7192 		{
7193 		    /* skip optional filename after 'k' and 's' */
7194 		    while (*s && *s != ',' && *s != ' ')
7195 		    {
7196 			if (*s == '\\' && s[1] != NUL)
7197 			    ++s;
7198 			++s;
7199 		    }
7200 		}
7201 		else
7202 		{
7203 		    if (errbuf != NULL)
7204 		    {
7205 			sprintf((char *)errbuf,
7206 				     _("E535: Illegal character after <%c>"),
7207 				     *--s);
7208 			errmsg = errbuf;
7209 		    }
7210 		    else
7211 			errmsg = "";
7212 		    break;
7213 		}
7214 	    }
7215 	}
7216     }
7217 
7218     /* 'completeopt' */
7219     else if (varp == &p_cot)
7220     {
7221 	if (check_opt_strings(p_cot, p_cot_values, TRUE) != OK)
7222 	    errmsg = e_invarg;
7223 	else
7224 	    completeopt_was_set();
7225     }
7226 #endif /* FEAT_INS_EXPAND */
7227 
7228 #ifdef FEAT_SIGNS
7229     /* 'signcolumn' */
7230     else if (varp == &curwin->w_p_scl)
7231     {
7232 	if (check_opt_strings(*varp, p_scl_values, FALSE) != OK)
7233 	    errmsg = e_invarg;
7234     }
7235 #endif
7236 
7237 
7238 #if defined(FEAT_TOOLBAR) && !defined(FEAT_GUI_W32)
7239     /* 'toolbar' */
7240     else if (varp == &p_toolbar)
7241     {
7242 	if (opt_strings_flags(p_toolbar, p_toolbar_values,
7243 			      &toolbar_flags, TRUE) != OK)
7244 	    errmsg = e_invarg;
7245 	else
7246 	{
7247 	    out_flush();
7248 	    gui_mch_show_toolbar((toolbar_flags &
7249 				  (TOOLBAR_TEXT | TOOLBAR_ICONS)) != 0);
7250 	}
7251     }
7252 #endif
7253 
7254 #if defined(FEAT_TOOLBAR) && defined(FEAT_GUI_GTK)
7255     /* 'toolbariconsize': GTK+ 2 only */
7256     else if (varp == &p_tbis)
7257     {
7258 	if (opt_strings_flags(p_tbis, p_tbis_values, &tbis_flags, FALSE) != OK)
7259 	    errmsg = e_invarg;
7260 	else
7261 	{
7262 	    out_flush();
7263 	    gui_mch_show_toolbar((toolbar_flags &
7264 				  (TOOLBAR_TEXT | TOOLBAR_ICONS)) != 0);
7265 	}
7266     }
7267 #endif
7268 
7269     /* 'pastetoggle': translate key codes like in a mapping */
7270     else if (varp == &p_pt)
7271     {
7272 	if (*p_pt)
7273 	{
7274 	    (void)replace_termcodes(p_pt, &p, TRUE, TRUE, FALSE);
7275 	    if (p != NULL)
7276 	    {
7277 		if (new_value_alloced)
7278 		    free_string_option(p_pt);
7279 		p_pt = p;
7280 		new_value_alloced = TRUE;
7281 	    }
7282 	}
7283     }
7284 
7285     /* 'backspace' */
7286     else if (varp == &p_bs)
7287     {
7288 	if (VIM_ISDIGIT(*p_bs))
7289 	{
7290 	    if (*p_bs > '2' || p_bs[1] != NUL)
7291 		errmsg = e_invarg;
7292 	}
7293 	else if (check_opt_strings(p_bs, p_bs_values, TRUE) != OK)
7294 	    errmsg = e_invarg;
7295     }
7296     else if (varp == &p_bo)
7297     {
7298 	if (opt_strings_flags(p_bo, p_bo_values, &bo_flags, TRUE) != OK)
7299 	    errmsg = e_invarg;
7300     }
7301 
7302     /* 'tagcase' */
7303     else if (gvarp == &p_tc)
7304     {
7305 	unsigned int	*flags;
7306 
7307 	if (opt_flags & OPT_LOCAL)
7308 	{
7309 	    p = curbuf->b_p_tc;
7310 	    flags = &curbuf->b_tc_flags;
7311 	}
7312 	else
7313 	{
7314 	    p = p_tc;
7315 	    flags = &tc_flags;
7316 	}
7317 
7318 	if ((opt_flags & OPT_LOCAL) && *p == NUL)
7319 	    /* make the local value empty: use the global value */
7320 	    *flags = 0;
7321 	else if (*p == NUL
7322 		|| opt_strings_flags(p, p_tc_values, flags, FALSE) != OK)
7323 	    errmsg = e_invarg;
7324     }
7325 
7326     /* 'casemap' */
7327     else if (varp == &p_cmp)
7328     {
7329 	if (opt_strings_flags(p_cmp, p_cmp_values, &cmp_flags, TRUE) != OK)
7330 	    errmsg = e_invarg;
7331     }
7332 
7333 #ifdef FEAT_DIFF
7334     /* 'diffopt' */
7335     else if (varp == &p_dip)
7336     {
7337 	if (diffopt_changed() == FAIL)
7338 	    errmsg = e_invarg;
7339     }
7340 #endif
7341 
7342 #ifdef FEAT_FOLDING
7343     /* 'foldmethod' */
7344     else if (gvarp == &curwin->w_allbuf_opt.wo_fdm)
7345     {
7346 	if (check_opt_strings(*varp, p_fdm_values, FALSE) != OK
7347 		|| *curwin->w_p_fdm == NUL)
7348 	    errmsg = e_invarg;
7349 	else
7350 	{
7351 	    foldUpdateAll(curwin);
7352 	    if (foldmethodIsDiff(curwin))
7353 		newFoldLevel();
7354 	}
7355     }
7356 # ifdef FEAT_EVAL
7357     /* 'foldexpr' */
7358     else if (varp == &curwin->w_p_fde)
7359     {
7360 	if (foldmethodIsExpr(curwin))
7361 	    foldUpdateAll(curwin);
7362     }
7363 # endif
7364     /* 'foldmarker' */
7365     else if (gvarp == &curwin->w_allbuf_opt.wo_fmr)
7366     {
7367 	p = vim_strchr(*varp, ',');
7368 	if (p == NULL)
7369 	    errmsg = N_("E536: comma required");
7370 	else if (p == *varp || p[1] == NUL)
7371 	    errmsg = e_invarg;
7372 	else if (foldmethodIsMarker(curwin))
7373 	    foldUpdateAll(curwin);
7374     }
7375     /* 'commentstring' */
7376     else if (gvarp == &p_cms)
7377     {
7378 	if (**varp != NUL && strstr((char *)*varp, "%s") == NULL)
7379 	    errmsg = N_("E537: 'commentstring' must be empty or contain %s");
7380     }
7381     /* 'foldopen' */
7382     else if (varp == &p_fdo)
7383     {
7384 	if (opt_strings_flags(p_fdo, p_fdo_values, &fdo_flags, TRUE) != OK)
7385 	    errmsg = e_invarg;
7386     }
7387     /* 'foldclose' */
7388     else if (varp == &p_fcl)
7389     {
7390 	if (check_opt_strings(p_fcl, p_fcl_values, TRUE) != OK)
7391 	    errmsg = e_invarg;
7392     }
7393     /* 'foldignore' */
7394     else if (gvarp == &curwin->w_allbuf_opt.wo_fdi)
7395     {
7396 	if (foldmethodIsIndent(curwin))
7397 	    foldUpdateAll(curwin);
7398     }
7399 #endif
7400 
7401     /* 'virtualedit' */
7402     else if (varp == &p_ve)
7403     {
7404 	if (opt_strings_flags(p_ve, p_ve_values, &ve_flags, TRUE) != OK)
7405 	    errmsg = e_invarg;
7406 	else if (STRCMP(p_ve, oldval) != 0)
7407 	{
7408 	    /* Recompute cursor position in case the new 've' setting
7409 	     * changes something. */
7410 	    validate_virtcol();
7411 	    coladvance(curwin->w_virtcol);
7412 	}
7413     }
7414 
7415 #if defined(FEAT_CSCOPE) && defined(FEAT_QUICKFIX)
7416     else if (varp == &p_csqf)
7417     {
7418 	if (p_csqf != NULL)
7419 	{
7420 	    p = p_csqf;
7421 	    while (*p != NUL)
7422 	    {
7423 		if (vim_strchr((char_u *)CSQF_CMDS, *p) == NULL
7424 			|| p[1] == NUL
7425 			|| vim_strchr((char_u *)CSQF_FLAGS, p[1]) == NULL
7426 			|| (p[2] != NUL && p[2] != ','))
7427 		{
7428 		    errmsg = e_invarg;
7429 		    break;
7430 		}
7431 		else if (p[2] == NUL)
7432 		    break;
7433 		else
7434 		    p += 3;
7435 	    }
7436 	}
7437     }
7438 #endif
7439 
7440 #ifdef FEAT_CINDENT
7441     /* 'cinoptions' */
7442     else if (gvarp == &p_cino)
7443     {
7444 	/* TODO: recognize errors */
7445 	parse_cino(curbuf);
7446     }
7447 #endif
7448 
7449 #if defined(FEAT_RENDER_OPTIONS)
7450     /* 'renderoptions' */
7451     else if (varp == &p_rop)
7452     {
7453 	if (!gui_mch_set_rendering_options(p_rop))
7454 	    errmsg = e_invarg;
7455     }
7456 #endif
7457 
7458     else if (gvarp == &p_ft)
7459     {
7460 	if (!valid_filetype(*varp))
7461 	    errmsg = e_invarg;
7462 	else
7463 	{
7464 	    value_changed = STRCMP(oldval, *varp) != 0;
7465 
7466 	    // Since we check the value, there is no need to set P_INSECURE,
7467 	    // even when the value comes from a modeline.
7468 	    *value_checked = TRUE;
7469 	}
7470     }
7471 
7472 #ifdef FEAT_SYN_HL
7473     else if (gvarp == &p_syn)
7474     {
7475 	if (!valid_filetype(*varp))
7476 	    errmsg = e_invarg;
7477 	else
7478 	{
7479 	    value_changed = STRCMP(oldval, *varp) != 0;
7480 
7481 	    // Since we check the value, there is no need to set P_INSECURE,
7482 	    // even when the value comes from a modeline.
7483 	    *value_checked = TRUE;
7484 	}
7485     }
7486 #endif
7487 
7488 #ifdef FEAT_TERMINAL
7489     // 'termwinkey'
7490     else if (varp == &curwin->w_p_twk)
7491     {
7492 	if (*curwin->w_p_twk != NUL
7493 				  && string_to_key(curwin->w_p_twk, TRUE) == 0)
7494 	    errmsg = e_invarg;
7495     }
7496     // 'termwinsize'
7497     else if (varp == &curwin->w_p_tws)
7498     {
7499 	if (*curwin->w_p_tws != NUL)
7500 	{
7501 	    p = skipdigits(curwin->w_p_tws);
7502 	    if (p == curwin->w_p_tws
7503 		    || (*p != 'x' && *p != '*')
7504 		    || *skipdigits(p + 1) != NUL)
7505 		errmsg = e_invarg;
7506 	}
7507     }
7508     // 'termmode'
7509     else if (varp == &curwin->w_p_tmod)
7510     {
7511 	if (check_opt_strings(*varp, p_tmod_values, FALSE) != OK)
7512 	    errmsg = e_invarg;
7513     }
7514 #endif
7515 
7516 #ifdef FEAT_VARTABS
7517     /* 'varsofttabstop' */
7518     else if (varp == &(curbuf->b_p_vsts))
7519     {
7520 	char_u *cp;
7521 
7522 	if (!(*varp)[0] || ((*varp)[0] == '0' && !(*varp)[1]))
7523 	{
7524 	    if (curbuf->b_p_vsts_array)
7525 	    {
7526 		vim_free(curbuf->b_p_vsts_array);
7527 		curbuf->b_p_vsts_array = 0;
7528 	    }
7529 	}
7530 	else
7531 	{
7532 	    for (cp = *varp; *cp; ++cp)
7533 	    {
7534 		if (vim_isdigit(*cp))
7535 		    continue;
7536 		if (*cp == ',' && cp > *varp && *(cp-1) != ',')
7537 		    continue;
7538 		errmsg = e_invarg;
7539 		break;
7540 	    }
7541 	    if (errmsg == NULL)
7542 	    {
7543 		int *oldarray = curbuf->b_p_vsts_array;
7544 		if (tabstop_set(*varp, &(curbuf->b_p_vsts_array)))
7545 		{
7546 		    if (oldarray)
7547 			vim_free(oldarray);
7548 		}
7549 		else
7550 		    errmsg = e_invarg;
7551 	    }
7552 	}
7553     }
7554 
7555     /* 'vartabstop' */
7556     else if (varp == &(curbuf->b_p_vts))
7557     {
7558 	char_u *cp;
7559 
7560 	if (!(*varp)[0] || ((*varp)[0] == '0' && !(*varp)[1]))
7561 	{
7562 	    if (curbuf->b_p_vts_array)
7563 	    {
7564 		vim_free(curbuf->b_p_vts_array);
7565 		curbuf->b_p_vts_array = NULL;
7566 	    }
7567 	}
7568 	else
7569 	{
7570 	    for (cp = *varp; *cp; ++cp)
7571 	    {
7572 		if (vim_isdigit(*cp))
7573 		    continue;
7574 		if (*cp == ',' && cp > *varp && *(cp-1) != ',')
7575 		    continue;
7576 		errmsg = e_invarg;
7577 		break;
7578 	    }
7579 	    if (errmsg == NULL)
7580 	    {
7581 		int *oldarray = curbuf->b_p_vts_array;
7582 		if (tabstop_set(*varp, &(curbuf->b_p_vts_array)))
7583 		{
7584 		    if (oldarray)
7585 			vim_free(oldarray);
7586 #ifdef FEAT_FOLDING
7587 		    if (foldmethodIsIndent(curwin))
7588 			foldUpdateAll(curwin);
7589 #endif /* FEAT_FOLDING */
7590 		}
7591 		else
7592 		    errmsg = e_invarg;
7593 	    }
7594 	}
7595     }
7596 #endif
7597 
7598     /* Options that are a list of flags. */
7599     else
7600     {
7601 	p = NULL;
7602 	if (varp == &p_ww) /* 'whichwrap' */
7603 	    p = (char_u *)WW_ALL;
7604 	if (varp == &p_shm) /* 'shortmess' */
7605 	    p = (char_u *)SHM_ALL;
7606 	else if (varp == &(p_cpo)) /* 'cpoptions' */
7607 	    p = (char_u *)CPO_ALL;
7608 	else if (varp == &(curbuf->b_p_fo)) /* 'formatoptions' */
7609 	    p = (char_u *)FO_ALL;
7610 #ifdef FEAT_CONCEAL
7611 	else if (varp == &curwin->w_p_cocu) /* 'concealcursor' */
7612 	    p = (char_u *)COCU_ALL;
7613 #endif
7614 	else if (varp == &p_mouse) /* 'mouse' */
7615 	{
7616 #ifdef FEAT_MOUSE
7617 	    p = (char_u *)MOUSE_ALL;
7618 #else
7619 	    if (*p_mouse != NUL)
7620 		errmsg = N_("E538: No mouse support");
7621 #endif
7622 	}
7623 #if defined(FEAT_GUI)
7624 	else if (varp == &p_go) /* 'guioptions' */
7625 	    p = (char_u *)GO_ALL;
7626 #endif
7627 	if (p != NULL)
7628 	{
7629 	    for (s = *varp; *s; ++s)
7630 		if (vim_strchr(p, *s) == NULL)
7631 		{
7632 		    errmsg = illegal_char(errbuf, *s);
7633 		    break;
7634 		}
7635 	}
7636     }
7637 
7638     /*
7639      * If error detected, restore the previous value.
7640      */
7641     if (errmsg != NULL)
7642     {
7643 	if (new_value_alloced)
7644 	    free_string_option(*varp);
7645 	*varp = oldval;
7646 	/*
7647 	 * When resetting some values, need to act on it.
7648 	 */
7649 	if (did_chartab)
7650 	    (void)init_chartab();
7651 	if (varp == &p_hl)
7652 	    (void)highlight_changed();
7653     }
7654     else
7655     {
7656 #ifdef FEAT_EVAL
7657 	/* Remember where the option was set. */
7658 	set_option_sctx_idx(opt_idx, opt_flags, current_sctx);
7659 #endif
7660 	/*
7661 	 * Free string options that are in allocated memory.
7662 	 * Use "free_oldval", because recursiveness may change the flags under
7663 	 * our fingers (esp. init_highlight()).
7664 	 */
7665 	if (free_oldval)
7666 	    free_string_option(oldval);
7667 	if (new_value_alloced)
7668 	    options[opt_idx].flags |= P_ALLOCED;
7669 	else
7670 	    options[opt_idx].flags &= ~P_ALLOCED;
7671 
7672 	if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0
7673 		&& ((int)options[opt_idx].indir & PV_BOTH))
7674 	{
7675 	    /* global option with local value set to use global value; free
7676 	     * the local value and make it empty */
7677 	    p = get_varp_scope(&(options[opt_idx]), OPT_LOCAL);
7678 	    free_string_option(*(char_u **)p);
7679 	    *(char_u **)p = empty_option;
7680 	}
7681 
7682 	/* May set global value for local option. */
7683 	else if (!(opt_flags & OPT_LOCAL) && opt_flags != OPT_GLOBAL)
7684 	    set_string_option_global(opt_idx, varp);
7685 
7686 	/*
7687 	 * Trigger the autocommand only after setting the flags.
7688 	 */
7689 #ifdef FEAT_SYN_HL
7690 	/* When 'syntax' is set, load the syntax of that name */
7691 	if (varp == &(curbuf->b_p_syn))
7692 	{
7693 	    static int syn_recursive = 0;
7694 
7695 	    ++syn_recursive;
7696 	    // Only pass TRUE for "force" when the value changed or not used
7697 	    // recursively, to avoid endless recurrence.
7698 	    apply_autocmds(EVENT_SYNTAX, curbuf->b_p_syn, curbuf->b_fname,
7699 		    value_changed || syn_recursive == 1, curbuf);
7700 	    --syn_recursive;
7701 	}
7702 #endif
7703 	else if (varp == &(curbuf->b_p_ft))
7704 	{
7705 	    /* 'filetype' is set, trigger the FileType autocommand.
7706 	     * Skip this when called from a modeline and the filetype was
7707 	     * already set to this value. */
7708 	    if (!(opt_flags & OPT_MODELINE) || value_changed)
7709 	    {
7710 		static int  ft_recursive = 0;
7711 		int	    secure_save = secure;
7712 
7713 		// Reset the secure flag, since the value of 'filetype' has
7714 		// been checked to be safe.
7715 		secure = 0;
7716 
7717 		++ft_recursive;
7718 		did_filetype = TRUE;
7719 		// Only pass TRUE for "force" when the value changed or not
7720 		// used recursively, to avoid endless recurrence.
7721 		apply_autocmds(EVENT_FILETYPE, curbuf->b_p_ft, curbuf->b_fname,
7722 				   value_changed || ft_recursive == 1, curbuf);
7723 		--ft_recursive;
7724 		/* Just in case the old "curbuf" is now invalid. */
7725 		if (varp != &(curbuf->b_p_ft))
7726 		    varp = NULL;
7727 
7728 		secure = secure_save;
7729 	    }
7730 	}
7731 #ifdef FEAT_SPELL
7732 	if (varp == &(curwin->w_s->b_p_spl))
7733 	{
7734 	    char_u	fname[200];
7735 	    char_u	*q = curwin->w_s->b_p_spl;
7736 
7737 	    /* Skip the first name if it is "cjk". */
7738 	    if (STRNCMP(q, "cjk,", 4) == 0)
7739 		q += 4;
7740 
7741 	    /*
7742 	     * Source the spell/LANG.vim in 'runtimepath'.
7743 	     * They could set 'spellcapcheck' depending on the language.
7744 	     * Use the first name in 'spelllang' up to '_region' or
7745 	     * '.encoding'.
7746 	     */
7747 	    for (p = q; *p != NUL; ++p)
7748 		if (!ASCII_ISALNUM(*p) && *p != '-')
7749 		    break;
7750 	    if (p > q)
7751 	    {
7752 		vim_snprintf((char *)fname, 200, "spell/%.*s.vim", (int)(p - q), q);
7753 		source_runtime(fname, DIP_ALL);
7754 	    }
7755 	}
7756 #endif
7757     }
7758 
7759 #ifdef FEAT_MOUSE
7760     if (varp == &p_mouse)
7761     {
7762 # ifdef FEAT_MOUSE_TTY
7763 	if (*p_mouse == NUL)
7764 	    mch_setmouse(FALSE);    /* switch mouse off */
7765 	else
7766 # endif
7767 	    setmouse();		    /* in case 'mouse' changed */
7768     }
7769 #endif
7770 
7771     if (curwin->w_curswant != MAXCOL
7772 		     && (options[opt_idx].flags & (P_CURSWANT | P_RALL)) != 0)
7773 	curwin->w_set_curswant = TRUE;
7774 
7775 #ifdef FEAT_GUI
7776     /* check redraw when it's not a GUI option or the GUI is active. */
7777     if (!redraw_gui_only || gui.in_use)
7778 #endif
7779 	check_redraw(options[opt_idx].flags);
7780 
7781 #if defined(FEAT_VTP) && defined(FEAT_TERMGUICOLORS)
7782     if (did_swaptcap)
7783     {
7784 	set_termname((char_u *)"win32");
7785 	init_highlight(TRUE, FALSE);
7786     }
7787 #endif
7788 
7789     return errmsg;
7790 }
7791 
7792 #if defined(FEAT_SYN_HL) || defined(PROTO)
7793 /*
7794  * Simple int comparison function for use with qsort()
7795  */
7796     static int
7797 int_cmp(const void *a, const void *b)
7798 {
7799     return *(const int *)a - *(const int *)b;
7800 }
7801 
7802 /*
7803  * Handle setting 'colorcolumn' or 'textwidth' in window "wp".
7804  * Returns error message, NULL if it's OK.
7805  */
7806     char *
7807 check_colorcolumn(win_T *wp)
7808 {
7809     char_u	*s;
7810     int		col;
7811     int		count = 0;
7812     int		color_cols[256];
7813     int		i;
7814     int		j = 0;
7815 
7816     if (wp->w_buffer == NULL)
7817 	return NULL;  /* buffer was closed */
7818 
7819     for (s = wp->w_p_cc; *s != NUL && count < 255;)
7820     {
7821 	if (*s == '-' || *s == '+')
7822 	{
7823 	    /* -N and +N: add to 'textwidth' */
7824 	    col = (*s == '-') ? -1 : 1;
7825 	    ++s;
7826 	    if (!VIM_ISDIGIT(*s))
7827 		return e_invarg;
7828 	    col = col * getdigits(&s);
7829 	    if (wp->w_buffer->b_p_tw == 0)
7830 		goto skip;  /* 'textwidth' not set, skip this item */
7831 	    col += wp->w_buffer->b_p_tw;
7832 	    if (col < 0)
7833 		goto skip;
7834 	}
7835 	else if (VIM_ISDIGIT(*s))
7836 	    col = getdigits(&s);
7837 	else
7838 	    return e_invarg;
7839 	color_cols[count++] = col - 1;  /* 1-based to 0-based */
7840 skip:
7841 	if (*s == NUL)
7842 	    break;
7843 	if (*s != ',')
7844 	    return e_invarg;
7845 	if (*++s == NUL)
7846 	    return e_invarg;  /* illegal trailing comma as in "set cc=80," */
7847     }
7848 
7849     vim_free(wp->w_p_cc_cols);
7850     if (count == 0)
7851 	wp->w_p_cc_cols = NULL;
7852     else
7853     {
7854 	wp->w_p_cc_cols = (int *)alloc((unsigned)sizeof(int) * (count + 1));
7855 	if (wp->w_p_cc_cols != NULL)
7856 	{
7857 	    /* sort the columns for faster usage on screen redraw inside
7858 	     * win_line() */
7859 	    qsort(color_cols, count, sizeof(int), int_cmp);
7860 
7861 	    for (i = 0; i < count; ++i)
7862 		/* skip duplicates */
7863 		if (j == 0 || wp->w_p_cc_cols[j - 1] != color_cols[i])
7864 		    wp->w_p_cc_cols[j++] = color_cols[i];
7865 	    wp->w_p_cc_cols[j] = -1;  /* end marker */
7866 	}
7867     }
7868 
7869     return NULL;  /* no error */
7870 }
7871 #endif
7872 
7873 /*
7874  * Handle setting 'listchars' or 'fillchars'.
7875  * Returns error message, NULL if it's OK.
7876  */
7877     static char *
7878 set_chars_option(char_u **varp)
7879 {
7880     int		round, i, len, entries;
7881     char_u	*p, *s;
7882     int		c1 = 0, c2 = 0, c3 = 0;
7883     struct charstab
7884     {
7885 	int	*cp;
7886 	char	*name;
7887     };
7888     static struct charstab filltab[] =
7889     {
7890 	{&fill_stl,	"stl"},
7891 	{&fill_stlnc,	"stlnc"},
7892 	{&fill_vert,	"vert"},
7893 	{&fill_fold,	"fold"},
7894 	{&fill_diff,	"diff"},
7895     };
7896     static struct charstab lcstab[] =
7897     {
7898 	{&lcs_eol,	"eol"},
7899 	{&lcs_ext,	"extends"},
7900 	{&lcs_nbsp,	"nbsp"},
7901 	{&lcs_prec,	"precedes"},
7902 	{&lcs_space,	"space"},
7903 	{&lcs_tab2,	"tab"},
7904 	{&lcs_trail,	"trail"},
7905 #ifdef FEAT_CONCEAL
7906 	{&lcs_conceal,	"conceal"},
7907 #else
7908 	{NULL,		"conceal"},
7909 #endif
7910     };
7911     struct charstab *tab;
7912 
7913     if (varp == &p_lcs)
7914     {
7915 	tab = lcstab;
7916 	entries = sizeof(lcstab) / sizeof(struct charstab);
7917     }
7918     else
7919     {
7920 	tab = filltab;
7921 	entries = sizeof(filltab) / sizeof(struct charstab);
7922     }
7923 
7924     /* first round: check for valid value, second round: assign values */
7925     for (round = 0; round <= 1; ++round)
7926     {
7927 	if (round > 0)
7928 	{
7929 	    /* After checking that the value is valid: set defaults: space for
7930 	     * 'fillchars', NUL for 'listchars' */
7931 	    for (i = 0; i < entries; ++i)
7932 		if (tab[i].cp != NULL)
7933 		    *(tab[i].cp) = (varp == &p_lcs ? NUL : ' ');
7934 
7935 	    if (varp == &p_lcs)
7936 	    {
7937 		lcs_tab1 = NUL;
7938 		lcs_tab3 = NUL;
7939 	    }
7940 	    else
7941 		fill_diff = '-';
7942 	}
7943 	p = *varp;
7944 	while (*p)
7945 	{
7946 	    for (i = 0; i < entries; ++i)
7947 	    {
7948 		len = (int)STRLEN(tab[i].name);
7949 		if (STRNCMP(p, tab[i].name, len) == 0
7950 			&& p[len] == ':'
7951 			&& p[len + 1] != NUL)
7952 		{
7953 		    c1 = c2 = c3 = 0;
7954 		    s = p + len + 1;
7955 		    c1 = mb_ptr2char_adv(&s);
7956 		    if (mb_char2cells(c1) > 1)
7957 			continue;
7958 		    if (tab[i].cp == &lcs_tab2)
7959 		    {
7960 			if (*s == NUL)
7961 			    continue;
7962 			c2 = mb_ptr2char_adv(&s);
7963 			if (mb_char2cells(c2) > 1)
7964 			    continue;
7965 			if (!(*s == ',' || *s == NUL))
7966 			{
7967 			    c3 = mb_ptr2char_adv(&s);
7968 			    if (mb_char2cells(c3) > 1)
7969 				continue;
7970 			}
7971 		    }
7972 
7973 		    if (*s == ',' || *s == NUL)
7974 		    {
7975 			if (round)
7976 			{
7977 			    if (tab[i].cp == &lcs_tab2)
7978 			    {
7979 				lcs_tab1 = c1;
7980 				lcs_tab2 = c2;
7981 				lcs_tab3 = c3;
7982 			    }
7983 			    else if (tab[i].cp != NULL)
7984 				*(tab[i].cp) = c1;
7985 
7986 			}
7987 			p = s;
7988 			break;
7989 		    }
7990 		}
7991 	    }
7992 
7993 	    if (i == entries)
7994 		return e_invarg;
7995 	    if (*p == ',')
7996 		++p;
7997 	}
7998     }
7999 
8000     return NULL;	/* no error */
8001 }
8002 
8003 #ifdef FEAT_STL_OPT
8004 /*
8005  * Check validity of options with the 'statusline' format.
8006  * Return error message or NULL.
8007  */
8008     char *
8009 check_stl_option(char_u *s)
8010 {
8011     int		itemcnt = 0;
8012     int		groupdepth = 0;
8013     static char errbuf[80];
8014 
8015     while (*s && itemcnt < STL_MAX_ITEM)
8016     {
8017 	/* Check for valid keys after % sequences */
8018 	while (*s && *s != '%')
8019 	    s++;
8020 	if (!*s)
8021 	    break;
8022 	s++;
8023 	if (*s != '%' && *s != ')')
8024 	    ++itemcnt;
8025 	if (*s == '%' || *s == STL_TRUNCMARK || *s == STL_MIDDLEMARK)
8026 	{
8027 	    s++;
8028 	    continue;
8029 	}
8030 	if (*s == ')')
8031 	{
8032 	    s++;
8033 	    if (--groupdepth < 0)
8034 		break;
8035 	    continue;
8036 	}
8037 	if (*s == '-')
8038 	    s++;
8039 	while (VIM_ISDIGIT(*s))
8040 	    s++;
8041 	if (*s == STL_USER_HL)
8042 	    continue;
8043 	if (*s == '.')
8044 	{
8045 	    s++;
8046 	    while (*s && VIM_ISDIGIT(*s))
8047 		s++;
8048 	}
8049 	if (*s == '(')
8050 	{
8051 	    groupdepth++;
8052 	    continue;
8053 	}
8054 	if (vim_strchr(STL_ALL, *s) == NULL)
8055 	{
8056 	    return illegal_char(errbuf, *s);
8057 	}
8058 	if (*s == '{')
8059 	{
8060 	    s++;
8061 	    while (*s != '}' && *s)
8062 		s++;
8063 	    if (*s != '}')
8064 		return N_("E540: Unclosed expression sequence");
8065 	}
8066     }
8067     if (itemcnt >= STL_MAX_ITEM)
8068 	return N_("E541: too many items");
8069     if (groupdepth != 0)
8070 	return N_("E542: unbalanced groups");
8071     return NULL;
8072 }
8073 #endif
8074 
8075 #ifdef FEAT_CLIPBOARD
8076 /*
8077  * Extract the items in the 'clipboard' option and set global values.
8078  * Return an error message or NULL for success.
8079  */
8080     static char *
8081 check_clipboard_option(void)
8082 {
8083     int		new_unnamed = 0;
8084     int		new_autoselect_star = FALSE;
8085     int		new_autoselect_plus = FALSE;
8086     int		new_autoselectml = FALSE;
8087     int		new_html = FALSE;
8088     regprog_T	*new_exclude_prog = NULL;
8089     char	*errmsg = NULL;
8090     char_u	*p;
8091 
8092     for (p = p_cb; *p != NUL; )
8093     {
8094 	if (STRNCMP(p, "unnamed", 7) == 0 && (p[7] == ',' || p[7] == NUL))
8095 	{
8096 	    new_unnamed |= CLIP_UNNAMED;
8097 	    p += 7;
8098 	}
8099 	else if (STRNCMP(p, "unnamedplus", 11) == 0
8100 					    && (p[11] == ',' || p[11] == NUL))
8101 	{
8102 	    new_unnamed |= CLIP_UNNAMED_PLUS;
8103 	    p += 11;
8104 	}
8105 	else if (STRNCMP(p, "autoselect", 10) == 0
8106 					    && (p[10] == ',' || p[10] == NUL))
8107 	{
8108 	    new_autoselect_star = TRUE;
8109 	    p += 10;
8110 	}
8111 	else if (STRNCMP(p, "autoselectplus", 14) == 0
8112 					    && (p[14] == ',' || p[14] == NUL))
8113 	{
8114 	    new_autoselect_plus = TRUE;
8115 	    p += 14;
8116 	}
8117 	else if (STRNCMP(p, "autoselectml", 12) == 0
8118 					    && (p[12] == ',' || p[12] == NUL))
8119 	{
8120 	    new_autoselectml = TRUE;
8121 	    p += 12;
8122 	}
8123 	else if (STRNCMP(p, "html", 4) == 0 && (p[4] == ',' || p[4] == NUL))
8124 	{
8125 	    new_html = TRUE;
8126 	    p += 4;
8127 	}
8128 	else if (STRNCMP(p, "exclude:", 8) == 0 && new_exclude_prog == NULL)
8129 	{
8130 	    p += 8;
8131 	    new_exclude_prog = vim_regcomp(p, RE_MAGIC);
8132 	    if (new_exclude_prog == NULL)
8133 		errmsg = e_invarg;
8134 	    break;
8135 	}
8136 	else
8137 	{
8138 	    errmsg = e_invarg;
8139 	    break;
8140 	}
8141 	if (*p == ',')
8142 	    ++p;
8143     }
8144     if (errmsg == NULL)
8145     {
8146 	clip_unnamed = new_unnamed;
8147 	clip_autoselect_star = new_autoselect_star;
8148 	clip_autoselect_plus = new_autoselect_plus;
8149 	clip_autoselectml = new_autoselectml;
8150 	clip_html = new_html;
8151 	vim_regfree(clip_exclude_prog);
8152 	clip_exclude_prog = new_exclude_prog;
8153 #ifdef FEAT_GUI_GTK
8154 	if (gui.in_use)
8155 	{
8156 	    gui_gtk_set_selection_targets();
8157 	    gui_gtk_set_dnd_targets();
8158 	}
8159 #endif
8160     }
8161     else
8162 	vim_regfree(new_exclude_prog);
8163 
8164     return errmsg;
8165 }
8166 #endif
8167 
8168 #ifdef FEAT_SPELL
8169 /*
8170  * Handle side effects of setting 'spell'.
8171  * Return an error message or NULL for success.
8172  */
8173     static char *
8174 did_set_spell_option(int is_spellfile)
8175 {
8176     char    *errmsg = NULL;
8177     win_T   *wp;
8178     int	    l;
8179 
8180     if (is_spellfile)
8181     {
8182 	l = (int)STRLEN(curwin->w_s->b_p_spf);
8183 	if (l > 0 && (l < 4
8184 			|| STRCMP(curwin->w_s->b_p_spf + l - 4, ".add") != 0))
8185 	    errmsg = e_invarg;
8186     }
8187 
8188     if (errmsg == NULL)
8189     {
8190 	FOR_ALL_WINDOWS(wp)
8191 	    if (wp->w_buffer == curbuf && wp->w_p_spell)
8192 	    {
8193 		errmsg = did_set_spelllang(wp);
8194 		break;
8195 	    }
8196     }
8197     return errmsg;
8198 }
8199 
8200 /*
8201  * Set curbuf->b_cap_prog to the regexp program for 'spellcapcheck'.
8202  * Return error message when failed, NULL when OK.
8203  */
8204     static char *
8205 compile_cap_prog(synblock_T *synblock)
8206 {
8207     regprog_T   *rp = synblock->b_cap_prog;
8208     char_u	*re;
8209 
8210     if (*synblock->b_p_spc == NUL)
8211 	synblock->b_cap_prog = NULL;
8212     else
8213     {
8214 	/* Prepend a ^ so that we only match at one column */
8215 	re = concat_str((char_u *)"^", synblock->b_p_spc);
8216 	if (re != NULL)
8217 	{
8218 	    synblock->b_cap_prog = vim_regcomp(re, RE_MAGIC);
8219 	    vim_free(re);
8220 	    if (synblock->b_cap_prog == NULL)
8221 	    {
8222 		synblock->b_cap_prog = rp; /* restore the previous program */
8223 		return e_invarg;
8224 	    }
8225 	}
8226     }
8227 
8228     vim_regfree(rp);
8229     return NULL;
8230 }
8231 #endif
8232 
8233 #if defined(FEAT_EVAL) || defined(PROTO)
8234 /*
8235  * Set the script_ctx for an option, taking care of setting the buffer- or
8236  * window-local value.
8237  */
8238     static void
8239 set_option_sctx_idx(int opt_idx, int opt_flags, sctx_T script_ctx)
8240 {
8241     int		both = (opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0;
8242     int		indir = (int)options[opt_idx].indir;
8243     sctx_T	new_script_ctx = script_ctx;
8244 
8245     new_script_ctx.sc_lnum += sourcing_lnum;
8246 
8247     /* Remember where the option was set.  For local options need to do that
8248      * in the buffer or window structure. */
8249     if (both || (opt_flags & OPT_GLOBAL) || (indir & (PV_BUF|PV_WIN)) == 0)
8250 	options[opt_idx].script_ctx = new_script_ctx;
8251     if (both || (opt_flags & OPT_LOCAL))
8252     {
8253 	if (indir & PV_BUF)
8254 	    curbuf->b_p_script_ctx[indir & PV_MASK] = new_script_ctx;
8255 	else if (indir & PV_WIN)
8256 	    curwin->w_p_script_ctx[indir & PV_MASK] = new_script_ctx;
8257     }
8258 }
8259 
8260 /*
8261  * Set the script_ctx for a termcap option.
8262  * "name" must be the two character code, e.g. "RV".
8263  * When "name" is NULL use "opt_idx".
8264  */
8265     void
8266 set_term_option_sctx_idx(char *name, int opt_idx)
8267 {
8268     char_u  buf[5];
8269     int	    idx;
8270 
8271     if (name == NULL)
8272 	idx = opt_idx;
8273     else
8274     {
8275 	buf[0] = 't';
8276 	buf[1] = '_';
8277 	buf[2] = name[0];
8278 	buf[3] = name[1];
8279 	buf[4] = 0;
8280 	idx = findoption(buf);
8281     }
8282     if (idx >= 0)
8283 	set_option_sctx_idx(idx, OPT_GLOBAL, current_sctx);
8284 }
8285 #endif
8286 
8287 /*
8288  * Set the value of a boolean option, and take care of side effects.
8289  * Returns NULL for success, or an error message for an error.
8290  */
8291     static char *
8292 set_bool_option(
8293     int		opt_idx,		/* index in options[] table */
8294     char_u	*varp,			/* pointer to the option variable */
8295     int		value,			/* new value */
8296     int		opt_flags)		/* OPT_LOCAL and/or OPT_GLOBAL */
8297 {
8298     int		old_value = *(int *)varp;
8299 
8300     /* Disallow changing some options from secure mode */
8301     if ((secure
8302 #ifdef HAVE_SANDBOX
8303 		|| sandbox != 0
8304 #endif
8305 		) && (options[opt_idx].flags & P_SECURE))
8306 	return e_secure;
8307 
8308     *(int *)varp = value;	    /* set the new value */
8309 #ifdef FEAT_EVAL
8310     /* Remember where the option was set. */
8311     set_option_sctx_idx(opt_idx, opt_flags, current_sctx);
8312 #endif
8313 
8314 #ifdef FEAT_GUI
8315     need_mouse_correct = TRUE;
8316 #endif
8317 
8318     /* May set global value for local option. */
8319     if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0)
8320 	*(int *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) = value;
8321 
8322     /*
8323      * Handle side effects of changing a bool option.
8324      */
8325 
8326     /* 'compatible' */
8327     if ((int *)varp == &p_cp)
8328     {
8329 	compatible_set();
8330     }
8331 
8332 #ifdef FEAT_LANGMAP
8333     if ((int *)varp == &p_lrm)
8334 	/* 'langremap' -> !'langnoremap' */
8335 	p_lnr = !p_lrm;
8336     else if ((int *)varp == &p_lnr)
8337 	/* 'langnoremap' -> !'langremap' */
8338 	p_lrm = !p_lnr;
8339 #endif
8340 
8341 #ifdef FEAT_SYN_HL
8342     else if ((int *)varp == &curwin->w_p_cul && !value && old_value)
8343 	reset_cursorline();
8344 #endif
8345 
8346 #ifdef FEAT_PERSISTENT_UNDO
8347     /* 'undofile' */
8348     else if ((int *)varp == &curbuf->b_p_udf || (int *)varp == &p_udf)
8349     {
8350 	/* Only take action when the option was set. When reset we do not
8351 	 * delete the undo file, the option may be set again without making
8352 	 * any changes in between. */
8353 	if (curbuf->b_p_udf || p_udf)
8354 	{
8355 	    char_u	hash[UNDO_HASH_SIZE];
8356 	    buf_T	*save_curbuf = curbuf;
8357 
8358 	    FOR_ALL_BUFFERS(curbuf)
8359 	    {
8360 		/* When 'undofile' is set globally: for every buffer, otherwise
8361 		 * only for the current buffer: Try to read in the undofile,
8362 		 * if one exists, the buffer wasn't changed and the buffer was
8363 		 * loaded */
8364 		if ((curbuf == save_curbuf
8365 				|| (opt_flags & OPT_GLOBAL) || opt_flags == 0)
8366 			&& !curbufIsChanged() && curbuf->b_ml.ml_mfp != NULL)
8367 		{
8368 		    u_compute_hash(hash);
8369 		    u_read_undo(NULL, hash, curbuf->b_fname);
8370 		}
8371 	    }
8372 	    curbuf = save_curbuf;
8373 	}
8374     }
8375 #endif
8376 
8377     else if ((int *)varp == &curbuf->b_p_ro)
8378     {
8379 	/* when 'readonly' is reset globally, also reset readonlymode */
8380 	if (!curbuf->b_p_ro && (opt_flags & OPT_LOCAL) == 0)
8381 	    readonlymode = FALSE;
8382 
8383 	/* when 'readonly' is set may give W10 again */
8384 	if (curbuf->b_p_ro)
8385 	    curbuf->b_did_warn = FALSE;
8386 
8387 #ifdef FEAT_TITLE
8388 	redraw_titles();
8389 #endif
8390     }
8391 
8392 #ifdef FEAT_GUI
8393     else if ((int *)varp == &p_mh)
8394     {
8395 	if (!p_mh)
8396 	    gui_mch_mousehide(FALSE);
8397     }
8398 #endif
8399 
8400     /* when 'modifiable' is changed, redraw the window title */
8401     else if ((int *)varp == &curbuf->b_p_ma)
8402     {
8403 # ifdef FEAT_TERMINAL
8404 	/* Cannot set 'modifiable' when in Terminal mode. */
8405 	if (curbuf->b_p_ma && (term_in_normal_mode() || (bt_terminal(curbuf)
8406 		      && curbuf->b_term != NULL && !term_is_finished(curbuf))))
8407 	{
8408 	    curbuf->b_p_ma = FALSE;
8409 	    return N_("E946: Cannot make a terminal with running job modifiable");
8410 	}
8411 # endif
8412 # ifdef FEAT_TITLE
8413 	redraw_titles();
8414 # endif
8415     }
8416 #ifdef FEAT_TITLE
8417     /* when 'endofline' is changed, redraw the window title */
8418     else if ((int *)varp == &curbuf->b_p_eol)
8419     {
8420 	redraw_titles();
8421     }
8422     /* when 'fixeol' is changed, redraw the window title */
8423     else if ((int *)varp == &curbuf->b_p_fixeol)
8424     {
8425 	redraw_titles();
8426     }
8427     /* when 'bomb' is changed, redraw the window title and tab page text */
8428     else if ((int *)varp == &curbuf->b_p_bomb)
8429     {
8430 	redraw_titles();
8431     }
8432 #endif
8433 
8434     /* when 'bin' is set also set some other options */
8435     else if ((int *)varp == &curbuf->b_p_bin)
8436     {
8437 	set_options_bin(old_value, curbuf->b_p_bin, opt_flags);
8438 #ifdef FEAT_TITLE
8439 	redraw_titles();
8440 #endif
8441     }
8442 
8443     /* when 'buflisted' changes, trigger autocommands */
8444     else if ((int *)varp == &curbuf->b_p_bl && old_value != curbuf->b_p_bl)
8445     {
8446 	apply_autocmds(curbuf->b_p_bl ? EVENT_BUFADD : EVENT_BUFDELETE,
8447 						    NULL, NULL, TRUE, curbuf);
8448     }
8449 
8450     /* when 'swf' is set, create swapfile, when reset remove swapfile */
8451     else if ((int *)varp == &curbuf->b_p_swf)
8452     {
8453 	if (curbuf->b_p_swf && p_uc)
8454 	    ml_open_file(curbuf);		/* create the swap file */
8455 	else
8456 	    /* no need to reset curbuf->b_may_swap, ml_open_file() will check
8457 	     * buf->b_p_swf */
8458 	    mf_close_file(curbuf, TRUE);	/* remove the swap file */
8459     }
8460 
8461     /* when 'terse' is set change 'shortmess' */
8462     else if ((int *)varp == &p_terse)
8463     {
8464 	char_u	*p;
8465 
8466 	p = vim_strchr(p_shm, SHM_SEARCH);
8467 
8468 	/* insert 's' in p_shm */
8469 	if (p_terse && p == NULL)
8470 	{
8471 	    STRCPY(IObuff, p_shm);
8472 	    STRCAT(IObuff, "s");
8473 	    set_string_option_direct((char_u *)"shm", -1, IObuff, OPT_FREE, 0);
8474 	}
8475 	/* remove 's' from p_shm */
8476 	else if (!p_terse && p != NULL)
8477 	    STRMOVE(p, p + 1);
8478     }
8479 
8480     /* when 'paste' is set or reset also change other options */
8481     else if ((int *)varp == &p_paste)
8482     {
8483 	paste_option_changed();
8484     }
8485 
8486     /* when 'insertmode' is set from an autocommand need to do work here */
8487     else if ((int *)varp == &p_im)
8488     {
8489 	if (p_im)
8490 	{
8491 	    if ((State & INSERT) == 0)
8492 		need_start_insertmode = TRUE;
8493 	    stop_insert_mode = FALSE;
8494 	}
8495 	/* only reset if it was set previously */
8496 	else if (old_value)
8497 	{
8498 	    need_start_insertmode = FALSE;
8499 	    stop_insert_mode = TRUE;
8500 	    if (restart_edit != 0 && mode_displayed)
8501 		clear_cmdline = TRUE;	/* remove "(insert)" */
8502 	    restart_edit = 0;
8503 	}
8504     }
8505 
8506     /* when 'ignorecase' is set or reset and 'hlsearch' is set, redraw */
8507     else if ((int *)varp == &p_ic && p_hls)
8508     {
8509 	redraw_all_later(SOME_VALID);
8510     }
8511 
8512 #ifdef FEAT_SEARCH_EXTRA
8513     /* when 'hlsearch' is set or reset: reset no_hlsearch */
8514     else if ((int *)varp == &p_hls)
8515     {
8516 	set_no_hlsearch(FALSE);
8517     }
8518 #endif
8519 
8520     /* when 'scrollbind' is set: snapshot the current position to avoid a jump
8521      * at the end of normal_cmd() */
8522     else if ((int *)varp == &curwin->w_p_scb)
8523     {
8524 	if (curwin->w_p_scb)
8525 	{
8526 	    do_check_scrollbind(FALSE);
8527 	    curwin->w_scbind_pos = curwin->w_topline;
8528 	}
8529     }
8530 
8531 #if defined(FEAT_QUICKFIX)
8532     /* There can be only one window with 'previewwindow' set. */
8533     else if ((int *)varp == &curwin->w_p_pvw)
8534     {
8535 	if (curwin->w_p_pvw)
8536 	{
8537 	    win_T	*win;
8538 
8539 	    FOR_ALL_WINDOWS(win)
8540 		if (win->w_p_pvw && win != curwin)
8541 		{
8542 		    curwin->w_p_pvw = FALSE;
8543 		    return N_("E590: A preview window already exists");
8544 		}
8545 	}
8546     }
8547 #endif
8548 
8549     /* when 'textmode' is set or reset also change 'fileformat' */
8550     else if ((int *)varp == &curbuf->b_p_tx)
8551     {
8552 	set_fileformat(curbuf->b_p_tx ? EOL_DOS : EOL_UNIX, opt_flags);
8553     }
8554 
8555     /* when 'textauto' is set or reset also change 'fileformats' */
8556     else if ((int *)varp == &p_ta)
8557 	set_string_option_direct((char_u *)"ffs", -1,
8558 				 p_ta ? (char_u *)DFLT_FFS_VIM : (char_u *)"",
8559 						     OPT_FREE | opt_flags, 0);
8560 
8561     /*
8562      * When 'lisp' option changes include/exclude '-' in
8563      * keyword characters.
8564      */
8565 #ifdef FEAT_LISP
8566     else if (varp == (char_u *)&(curbuf->b_p_lisp))
8567     {
8568 	(void)buf_init_chartab(curbuf, FALSE);	    /* ignore errors */
8569     }
8570 #endif
8571 
8572 #ifdef FEAT_TITLE
8573     /* when 'title' changed, may need to change the title; same for 'icon' */
8574     else if ((int *)varp == &p_title || (int *)varp == &p_icon)
8575     {
8576 	did_set_title();
8577     }
8578 #endif
8579 
8580     else if ((int *)varp == &curbuf->b_changed)
8581     {
8582 	if (!value)
8583 	    save_file_ff(curbuf);	/* Buffer is unchanged */
8584 #ifdef FEAT_TITLE
8585 	redraw_titles();
8586 #endif
8587 	modified_was_set = value;
8588     }
8589 
8590 #ifdef BACKSLASH_IN_FILENAME
8591     else if ((int *)varp == &p_ssl)
8592     {
8593 	if (p_ssl)
8594 	{
8595 	    psepc = '/';
8596 	    psepcN = '\\';
8597 	    pseps[0] = '/';
8598 	}
8599 	else
8600 	{
8601 	    psepc = '\\';
8602 	    psepcN = '/';
8603 	    pseps[0] = '\\';
8604 	}
8605 
8606 	/* need to adjust the file name arguments and buffer names. */
8607 	buflist_slash_adjust();
8608 	alist_slash_adjust();
8609 # ifdef FEAT_EVAL
8610 	scriptnames_slash_adjust();
8611 # endif
8612     }
8613 #endif
8614 
8615     /* If 'wrap' is set, set w_leftcol to zero. */
8616     else if ((int *)varp == &curwin->w_p_wrap)
8617     {
8618 	if (curwin->w_p_wrap)
8619 	    curwin->w_leftcol = 0;
8620     }
8621 
8622     else if ((int *)varp == &p_ea)
8623     {
8624 	if (p_ea && !old_value)
8625 	    win_equal(curwin, FALSE, 0);
8626     }
8627 
8628     else if ((int *)varp == &p_wiv)
8629     {
8630 	/*
8631 	 * When 'weirdinvert' changed, set/reset 't_xs'.
8632 	 * Then set 'weirdinvert' according to value of 't_xs'.
8633 	 */
8634 	if (p_wiv && !old_value)
8635 	    T_XS = (char_u *)"y";
8636 	else if (!p_wiv && old_value)
8637 	    T_XS = empty_option;
8638 	p_wiv = (*T_XS != NUL);
8639     }
8640 
8641 #ifdef FEAT_BEVAL_GUI
8642     else if ((int *)varp == &p_beval)
8643     {
8644 	if (!balloonEvalForTerm)
8645 	{
8646 	    if (p_beval && !old_value)
8647 		gui_mch_enable_beval_area(balloonEval);
8648 	    else if (!p_beval && old_value)
8649 		gui_mch_disable_beval_area(balloonEval);
8650 	}
8651     }
8652 #endif
8653 #ifdef FEAT_BEVAL_TERM
8654     else if ((int *)varp == &p_bevalterm)
8655     {
8656 	mch_bevalterm_changed();
8657     }
8658 #endif
8659 
8660 #ifdef FEAT_AUTOCHDIR
8661     else if ((int *)varp == &p_acd)
8662     {
8663 	/* Change directories when the 'acd' option is set now. */
8664 	DO_AUTOCHDIR;
8665     }
8666 #endif
8667 
8668 #ifdef FEAT_DIFF
8669     /* 'diff' */
8670     else if ((int *)varp == &curwin->w_p_diff)
8671     {
8672 	/* May add or remove the buffer from the list of diff buffers. */
8673 	diff_buf_adjust(curwin);
8674 # ifdef FEAT_FOLDING
8675 	if (foldmethodIsDiff(curwin))
8676 	    foldUpdateAll(curwin);
8677 # endif
8678     }
8679 #endif
8680 
8681 #ifdef HAVE_INPUT_METHOD
8682     /* 'imdisable' */
8683     else if ((int *)varp == &p_imdisable)
8684     {
8685 	/* Only de-activate it here, it will be enabled when changing mode. */
8686 	if (p_imdisable)
8687 	    im_set_active(FALSE);
8688 	else if (State & INSERT)
8689 	    /* When the option is set from an autocommand, it may need to take
8690 	     * effect right away. */
8691 	    im_set_active(curbuf->b_p_iminsert == B_IMODE_IM);
8692     }
8693 #endif
8694 
8695 #ifdef FEAT_SPELL
8696     /* 'spell' */
8697     else if ((int *)varp == &curwin->w_p_spell)
8698     {
8699 	if (curwin->w_p_spell)
8700 	{
8701 	    char	*errmsg = did_set_spelllang(curwin);
8702 
8703 	    if (errmsg != NULL)
8704 		emsg(_(errmsg));
8705 	}
8706     }
8707 #endif
8708 
8709 #ifdef FEAT_FKMAP
8710     else if ((int *)varp == &p_altkeymap)
8711     {
8712 	if (old_value != p_altkeymap)
8713 	{
8714 	    if (!p_altkeymap)
8715 	    {
8716 		p_hkmap = p_fkmap;
8717 		p_fkmap = 0;
8718 	    }
8719 	    else
8720 	    {
8721 		p_fkmap = p_hkmap;
8722 		p_hkmap = 0;
8723 	    }
8724 	    (void)init_chartab();
8725 	}
8726     }
8727 
8728     /*
8729      * In case some second language keymapping options have changed, check
8730      * and correct the setting in a consistent way.
8731      */
8732 
8733     /*
8734      * If hkmap or fkmap are set, reset Arabic keymapping.
8735      */
8736     if ((p_hkmap || p_fkmap) && p_altkeymap)
8737     {
8738 	p_altkeymap = p_fkmap;
8739 # ifdef FEAT_ARABIC
8740 	curwin->w_p_arab = FALSE;
8741 # endif
8742 	(void)init_chartab();
8743     }
8744 
8745     /*
8746      * If hkmap set, reset Farsi keymapping.
8747      */
8748     if (p_hkmap && p_altkeymap)
8749     {
8750 	p_altkeymap = 0;
8751 	p_fkmap = 0;
8752 # ifdef FEAT_ARABIC
8753 	curwin->w_p_arab = FALSE;
8754 # endif
8755 	(void)init_chartab();
8756     }
8757 
8758     /*
8759      * If fkmap set, reset Hebrew keymapping.
8760      */
8761     if (p_fkmap && !p_altkeymap)
8762     {
8763 	p_altkeymap = 1;
8764 	p_hkmap = 0;
8765 # ifdef FEAT_ARABIC
8766 	curwin->w_p_arab = FALSE;
8767 # endif
8768 	(void)init_chartab();
8769     }
8770 #endif
8771 
8772 #ifdef FEAT_ARABIC
8773     if ((int *)varp == &curwin->w_p_arab)
8774     {
8775 	if (curwin->w_p_arab)
8776 	{
8777 	    /*
8778 	     * 'arabic' is set, handle various sub-settings.
8779 	     */
8780 	    if (!p_tbidi)
8781 	    {
8782 		/* set rightleft mode */
8783 		if (!curwin->w_p_rl)
8784 		{
8785 		    curwin->w_p_rl = TRUE;
8786 		    changed_window_setting();
8787 		}
8788 
8789 		/* Enable Arabic shaping (major part of what Arabic requires) */
8790 		if (!p_arshape)
8791 		{
8792 		    p_arshape = TRUE;
8793 		    redraw_later_clear();
8794 		}
8795 	    }
8796 
8797 	    /* Arabic requires a utf-8 encoding, inform the user if its not
8798 	     * set. */
8799 	    if (STRCMP(p_enc, "utf-8") != 0)
8800 	    {
8801 		static char *w_arabic = N_("W17: Arabic requires UTF-8, do ':set encoding=utf-8'");
8802 
8803 		msg_source(HL_ATTR(HLF_W));
8804 		msg_attr(_(w_arabic), HL_ATTR(HLF_W));
8805 #ifdef FEAT_EVAL
8806 		set_vim_var_string(VV_WARNINGMSG, (char_u *)_(w_arabic), -1);
8807 #endif
8808 	    }
8809 
8810 	    /* set 'delcombine' */
8811 	    p_deco = TRUE;
8812 
8813 # ifdef FEAT_KEYMAP
8814 	    /* Force-set the necessary keymap for arabic */
8815 	    set_option_value((char_u *)"keymap", 0L, (char_u *)"arabic",
8816 								   OPT_LOCAL);
8817 # endif
8818 # ifdef FEAT_FKMAP
8819 	    p_altkeymap = 0;
8820 	    p_hkmap = 0;
8821 	    p_fkmap = 0;
8822 	    (void)init_chartab();
8823 # endif
8824 	}
8825 	else
8826 	{
8827 	    /*
8828 	     * 'arabic' is reset, handle various sub-settings.
8829 	     */
8830 	    if (!p_tbidi)
8831 	    {
8832 		/* reset rightleft mode */
8833 		if (curwin->w_p_rl)
8834 		{
8835 		    curwin->w_p_rl = FALSE;
8836 		    changed_window_setting();
8837 		}
8838 
8839 		/* 'arabicshape' isn't reset, it is a global option and
8840 		 * another window may still need it "on". */
8841 	    }
8842 
8843 	    /* 'delcombine' isn't reset, it is a global option and another
8844 	     * window may still want it "on". */
8845 
8846 # ifdef FEAT_KEYMAP
8847 	    /* Revert to the default keymap */
8848 	    curbuf->b_p_iminsert = B_IMODE_NONE;
8849 	    curbuf->b_p_imsearch = B_IMODE_USE_INSERT;
8850 # endif
8851 	}
8852     }
8853 
8854 #endif
8855 
8856 #ifdef FEAT_TERMGUICOLORS
8857     /* 'termguicolors' */
8858     else if ((int *)varp == &p_tgc)
8859     {
8860 # ifdef FEAT_VTP
8861 	/* Do not turn on 'tgc' when 24-bit colors are not supported. */
8862 	if (!has_vtp_working())
8863 	{
8864 	    p_tgc = 0;
8865 	    return N_("E954: 24-bit colors are not supported on this environment");
8866 	}
8867 	if (is_term_win32())
8868 	    swap_tcap();
8869 # endif
8870 # ifdef FEAT_GUI
8871 	if (!gui.in_use && !gui.starting)
8872 # endif
8873 	    highlight_gui_started();
8874 # ifdef FEAT_VTP
8875 	/* reset t_Co */
8876 	if (is_term_win32())
8877 	{
8878 	    control_console_color_rgb();
8879 	    set_termname(T_NAME);
8880 	    init_highlight(TRUE, FALSE);
8881 	}
8882 # endif
8883     }
8884 #endif
8885 
8886     /*
8887      * End of handling side effects for bool options.
8888      */
8889 
8890     /* after handling side effects, call autocommand */
8891 
8892     options[opt_idx].flags |= P_WAS_SET;
8893 
8894 #if defined(FEAT_EVAL)
8895     // Don't do this while starting up or recursively.
8896     if (!starting && *get_vim_var_str(VV_OPTION_TYPE) == NUL)
8897     {
8898 	char_u buf_old[2], buf_new[2], buf_type[7];
8899 
8900 	vim_snprintf((char *)buf_old, 2, "%d", old_value ? TRUE: FALSE);
8901 	vim_snprintf((char *)buf_new, 2, "%d", value ? TRUE: FALSE);
8902 	vim_snprintf((char *)buf_type, 7, "%s", (opt_flags & OPT_LOCAL) ? "local" : "global");
8903 	set_vim_var_string(VV_OPTION_NEW, buf_new, -1);
8904 	set_vim_var_string(VV_OPTION_OLD, buf_old, -1);
8905 	set_vim_var_string(VV_OPTION_TYPE, buf_type, -1);
8906 	apply_autocmds(EVENT_OPTIONSET, (char_u *) options[opt_idx].fullname, NULL, FALSE, NULL);
8907 	reset_v_option_vars();
8908     }
8909 #endif
8910 
8911     comp_col();			    /* in case 'ruler' or 'showcmd' changed */
8912     if (curwin->w_curswant != MAXCOL
8913 		     && (options[opt_idx].flags & (P_CURSWANT | P_RALL)) != 0)
8914 	curwin->w_set_curswant = TRUE;
8915     check_redraw(options[opt_idx].flags);
8916 
8917     return NULL;
8918 }
8919 
8920 /*
8921  * Set the value of a number option, and take care of side effects.
8922  * Returns NULL for success, or an error message for an error.
8923  */
8924     static char *
8925 set_num_option(
8926     int		opt_idx,		/* index in options[] table */
8927     char_u	*varp,			/* pointer to the option variable */
8928     long	value,			/* new value */
8929     char	*errbuf,		/* buffer for error messages */
8930     size_t	errbuflen,		/* length of "errbuf" */
8931     int		opt_flags)		/* OPT_LOCAL, OPT_GLOBAL and
8932 					   OPT_MODELINE */
8933 {
8934     char	*errmsg = NULL;
8935     long	old_value = *(long *)varp;
8936     long	old_Rows = Rows;	/* remember old Rows */
8937     long	old_Columns = Columns;	/* remember old Columns */
8938     long	*pp = (long *)varp;
8939 
8940     /* Disallow changing some options from secure mode. */
8941     if ((secure
8942 #ifdef HAVE_SANDBOX
8943 		|| sandbox != 0
8944 #endif
8945 		) && (options[opt_idx].flags & P_SECURE))
8946 	return e_secure;
8947 
8948     *pp = value;
8949 #ifdef FEAT_EVAL
8950     /* Remember where the option was set. */
8951     set_option_sctx_idx(opt_idx, opt_flags, current_sctx);
8952 #endif
8953 #ifdef FEAT_GUI
8954     need_mouse_correct = TRUE;
8955 #endif
8956 
8957     if (curbuf->b_p_sw < 0)
8958     {
8959 	errmsg = e_positive;
8960 #ifdef FEAT_VARTABS
8961 	// Use the first 'vartabstop' value, or 'tabstop' if vts isn't in use.
8962 	curbuf->b_p_sw = tabstop_count(curbuf->b_p_vts_array) > 0
8963 	               ? tabstop_first(curbuf->b_p_vts_array)
8964 		       : curbuf->b_p_ts;
8965 #else
8966 	curbuf->b_p_sw = curbuf->b_p_ts;
8967 #endif
8968     }
8969 
8970     /*
8971      * Number options that need some action when changed
8972      */
8973     if (pp == &p_wh || pp == &p_hh)
8974     {
8975 	// 'winheight' and 'helpheight'
8976 	if (p_wh < 1)
8977 	{
8978 	    errmsg = e_positive;
8979 	    p_wh = 1;
8980 	}
8981 	if (p_wmh > p_wh)
8982 	{
8983 	    errmsg = e_winheight;
8984 	    p_wh = p_wmh;
8985 	}
8986 	if (p_hh < 0)
8987 	{
8988 	    errmsg = e_positive;
8989 	    p_hh = 0;
8990 	}
8991 
8992 	/* Change window height NOW */
8993 	if (!ONE_WINDOW)
8994 	{
8995 	    if (pp == &p_wh && curwin->w_height < p_wh)
8996 		win_setheight((int)p_wh);
8997 	    if (pp == &p_hh && curbuf->b_help && curwin->w_height < p_hh)
8998 		win_setheight((int)p_hh);
8999 	}
9000     }
9001     else if (pp == &p_wmh)
9002     {
9003 	// 'winminheight'
9004 	if (p_wmh < 0)
9005 	{
9006 	    errmsg = e_positive;
9007 	    p_wmh = 0;
9008 	}
9009 	if (p_wmh > p_wh)
9010 	{
9011 	    errmsg = e_winheight;
9012 	    p_wmh = p_wh;
9013 	}
9014 	win_setminheight();
9015     }
9016     else if (pp == &p_wiw)
9017     {
9018 	// 'winwidth'
9019 	if (p_wiw < 1)
9020 	{
9021 	    errmsg = e_positive;
9022 	    p_wiw = 1;
9023 	}
9024 	if (p_wmw > p_wiw)
9025 	{
9026 	    errmsg = e_winwidth;
9027 	    p_wiw = p_wmw;
9028 	}
9029 
9030 	/* Change window width NOW */
9031 	if (!ONE_WINDOW && curwin->w_width < p_wiw)
9032 	    win_setwidth((int)p_wiw);
9033     }
9034     else if (pp == &p_wmw)
9035     {
9036 	// 'winminwidth'
9037 	if (p_wmw < 0)
9038 	{
9039 	    errmsg = e_positive;
9040 	    p_wmw = 0;
9041 	}
9042 	if (p_wmw > p_wiw)
9043 	{
9044 	    errmsg = e_winwidth;
9045 	    p_wmw = p_wiw;
9046 	}
9047 	win_setminwidth();
9048     }
9049 
9050     /* (re)set last window status line */
9051     else if (pp == &p_ls)
9052     {
9053 	last_status(FALSE);
9054     }
9055 
9056     /* (re)set tab page line */
9057     else if (pp == &p_stal)
9058     {
9059 	shell_new_rows();	/* recompute window positions and heights */
9060     }
9061 
9062 #ifdef FEAT_GUI
9063     else if (pp == &p_linespace)
9064     {
9065 	/* Recompute gui.char_height and resize the Vim window to keep the
9066 	 * same number of lines. */
9067 	if (gui.in_use && gui_mch_adjust_charheight() == OK)
9068 	    gui_set_shellsize(FALSE, FALSE, RESIZE_VERT);
9069     }
9070 #endif
9071 
9072 #ifdef FEAT_FOLDING
9073     /* 'foldlevel' */
9074     else if (pp == &curwin->w_p_fdl)
9075     {
9076 	if (curwin->w_p_fdl < 0)
9077 	    curwin->w_p_fdl = 0;
9078 	newFoldLevel();
9079     }
9080 
9081     /* 'foldminlines' */
9082     else if (pp == &curwin->w_p_fml)
9083     {
9084 	foldUpdateAll(curwin);
9085     }
9086 
9087     /* 'foldnestmax' */
9088     else if (pp == &curwin->w_p_fdn)
9089     {
9090 	if (foldmethodIsSyntax(curwin) || foldmethodIsIndent(curwin))
9091 	    foldUpdateAll(curwin);
9092     }
9093 
9094     /* 'foldcolumn' */
9095     else if (pp == &curwin->w_p_fdc)
9096     {
9097 	if (curwin->w_p_fdc < 0)
9098 	{
9099 	    errmsg = e_positive;
9100 	    curwin->w_p_fdc = 0;
9101 	}
9102 	else if (curwin->w_p_fdc > 12)
9103 	{
9104 	    errmsg = e_invarg;
9105 	    curwin->w_p_fdc = 12;
9106 	}
9107     }
9108 #endif /* FEAT_FOLDING */
9109 
9110 #if defined(FEAT_FOLDING) || defined(FEAT_CINDENT)
9111     /* 'shiftwidth' or 'tabstop' */
9112     else if (pp == &curbuf->b_p_sw || pp == &curbuf->b_p_ts)
9113     {
9114 # ifdef FEAT_FOLDING
9115 	if (foldmethodIsIndent(curwin))
9116 	    foldUpdateAll(curwin);
9117 # endif
9118 # ifdef FEAT_CINDENT
9119 	/* When 'shiftwidth' changes, or it's zero and 'tabstop' changes:
9120 	 * parse 'cinoptions'. */
9121 	if (pp == &curbuf->b_p_sw || curbuf->b_p_sw == 0)
9122 	    parse_cino(curbuf);
9123 # endif
9124     }
9125 #endif
9126 
9127     /* 'maxcombine' */
9128     else if (pp == &p_mco)
9129     {
9130 	if (p_mco > MAX_MCO)
9131 	    p_mco = MAX_MCO;
9132 	else if (p_mco < 0)
9133 	    p_mco = 0;
9134 	screenclear();	    /* will re-allocate the screen */
9135     }
9136 
9137     else if (pp == &curbuf->b_p_iminsert)
9138     {
9139 	if (curbuf->b_p_iminsert < 0 || curbuf->b_p_iminsert > B_IMODE_LAST)
9140 	{
9141 	    errmsg = e_invarg;
9142 	    curbuf->b_p_iminsert = B_IMODE_NONE;
9143 	}
9144 	p_iminsert = curbuf->b_p_iminsert;
9145 	if (termcap_active)	/* don't do this in the alternate screen */
9146 	    showmode();
9147 #if defined(FEAT_KEYMAP)
9148 	/* Show/unshow value of 'keymap' in status lines. */
9149 	status_redraw_curbuf();
9150 #endif
9151     }
9152 
9153 #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
9154     /* 'imstyle' */
9155     else if (pp == &p_imst)
9156     {
9157 	if (p_imst != IM_ON_THE_SPOT && p_imst != IM_OVER_THE_SPOT)
9158 	    errmsg = e_invarg;
9159     }
9160 #endif
9161 
9162     else if (pp == &p_window)
9163     {
9164 	if (p_window < 1)
9165 	    p_window = 1;
9166 	else if (p_window >= Rows)
9167 	    p_window = Rows - 1;
9168     }
9169 
9170     else if (pp == &curbuf->b_p_imsearch)
9171     {
9172 	if (curbuf->b_p_imsearch < -1 || curbuf->b_p_imsearch > B_IMODE_LAST)
9173 	{
9174 	    errmsg = e_invarg;
9175 	    curbuf->b_p_imsearch = B_IMODE_NONE;
9176 	}
9177 	p_imsearch = curbuf->b_p_imsearch;
9178     }
9179 
9180 #ifdef FEAT_TITLE
9181     /* if 'titlelen' has changed, redraw the title */
9182     else if (pp == &p_titlelen)
9183     {
9184 	if (p_titlelen < 0)
9185 	{
9186 	    errmsg = e_positive;
9187 	    p_titlelen = 85;
9188 	}
9189 	if (starting != NO_SCREEN && old_value != p_titlelen)
9190 	    need_maketitle = TRUE;
9191     }
9192 #endif
9193 
9194     /* if p_ch changed value, change the command line height */
9195     else if (pp == &p_ch)
9196     {
9197 	if (p_ch < 1)
9198 	{
9199 	    errmsg = e_positive;
9200 	    p_ch = 1;
9201 	}
9202 	if (p_ch > Rows - min_rows() + 1)
9203 	    p_ch = Rows - min_rows() + 1;
9204 
9205 	/* Only compute the new window layout when startup has been
9206 	 * completed. Otherwise the frame sizes may be wrong. */
9207 	if (p_ch != old_value && full_screen
9208 #ifdef FEAT_GUI
9209 		&& !gui.starting
9210 #endif
9211 	   )
9212 	    command_height();
9213     }
9214 
9215     /* when 'updatecount' changes from zero to non-zero, open swap files */
9216     else if (pp == &p_uc)
9217     {
9218 	if (p_uc < 0)
9219 	{
9220 	    errmsg = e_positive;
9221 	    p_uc = 100;
9222 	}
9223 	if (p_uc && !old_value)
9224 	    ml_open_files();
9225     }
9226 #ifdef FEAT_CONCEAL
9227     else if (pp == &curwin->w_p_cole)
9228     {
9229 	if (curwin->w_p_cole < 0)
9230 	{
9231 	    errmsg = e_positive;
9232 	    curwin->w_p_cole = 0;
9233 	}
9234 	else if (curwin->w_p_cole > 3)
9235 	{
9236 	    errmsg = e_invarg;
9237 	    curwin->w_p_cole = 3;
9238 	}
9239     }
9240 #endif
9241 #ifdef MZSCHEME_GUI_THREADS
9242     else if (pp == &p_mzq)
9243 	mzvim_reset_timer();
9244 #endif
9245 
9246 #if defined(FEAT_PYTHON) || defined(FEAT_PYTHON3)
9247     /* 'pyxversion' */
9248     else if (pp == &p_pyx)
9249     {
9250 	if (p_pyx != 0 && p_pyx != 2 && p_pyx != 3)
9251 	    errmsg = e_invarg;
9252     }
9253 #endif
9254 
9255     /* sync undo before 'undolevels' changes */
9256     else if (pp == &p_ul)
9257     {
9258 	/* use the old value, otherwise u_sync() may not work properly */
9259 	p_ul = old_value;
9260 	u_sync(TRUE);
9261 	p_ul = value;
9262     }
9263     else if (pp == &curbuf->b_p_ul)
9264     {
9265 	/* use the old value, otherwise u_sync() may not work properly */
9266 	curbuf->b_p_ul = old_value;
9267 	u_sync(TRUE);
9268 	curbuf->b_p_ul = value;
9269     }
9270 
9271 #ifdef FEAT_LINEBREAK
9272     /* 'numberwidth' must be positive */
9273     else if (pp == &curwin->w_p_nuw)
9274     {
9275 	if (curwin->w_p_nuw < 1)
9276 	{
9277 	    errmsg = e_positive;
9278 	    curwin->w_p_nuw = 1;
9279 	}
9280 	if (curwin->w_p_nuw > 10)
9281 	{
9282 	    errmsg = e_invarg;
9283 	    curwin->w_p_nuw = 10;
9284 	}
9285 	curwin->w_nrwidth_line_count = 0; /* trigger a redraw */
9286     }
9287 #endif
9288 
9289     else if (pp == &curbuf->b_p_tw)
9290     {
9291 	if (curbuf->b_p_tw < 0)
9292 	{
9293 	    errmsg = e_positive;
9294 	    curbuf->b_p_tw = 0;
9295 	}
9296 #ifdef FEAT_SYN_HL
9297 	{
9298 	    win_T	*wp;
9299 	    tabpage_T	*tp;
9300 
9301 	    FOR_ALL_TAB_WINDOWS(tp, wp)
9302 		check_colorcolumn(wp);
9303 	}
9304 #endif
9305     }
9306 
9307     /*
9308      * Check the bounds for numeric options here
9309      */
9310     if (Rows < min_rows() && full_screen)
9311     {
9312 	if (errbuf != NULL)
9313 	{
9314 	    vim_snprintf((char *)errbuf, errbuflen,
9315 			       _("E593: Need at least %d lines"), min_rows());
9316 	    errmsg = errbuf;
9317 	}
9318 	Rows = min_rows();
9319     }
9320     if (Columns < MIN_COLUMNS && full_screen)
9321     {
9322 	if (errbuf != NULL)
9323 	{
9324 	    vim_snprintf((char *)errbuf, errbuflen,
9325 			    _("E594: Need at least %d columns"), MIN_COLUMNS);
9326 	    errmsg = errbuf;
9327 	}
9328 	Columns = MIN_COLUMNS;
9329     }
9330     limit_screen_size();
9331 
9332     /*
9333      * If the screen (shell) height has been changed, assume it is the
9334      * physical screenheight.
9335      */
9336     if (old_Rows != Rows || old_Columns != Columns)
9337     {
9338 	/* Changing the screen size is not allowed while updating the screen. */
9339 	if (updating_screen)
9340 	    *pp = old_value;
9341 	else if (full_screen
9342 #ifdef FEAT_GUI
9343 		&& !gui.starting
9344 #endif
9345 	    )
9346 	    set_shellsize((int)Columns, (int)Rows, TRUE);
9347 	else
9348 	{
9349 	    /* Postpone the resizing; check the size and cmdline position for
9350 	     * messages. */
9351 	    check_shellsize();
9352 	    if (cmdline_row > Rows - p_ch && Rows > p_ch)
9353 		cmdline_row = Rows - p_ch;
9354 	}
9355 	if (p_window >= Rows || !option_was_set((char_u *)"window"))
9356 	    p_window = Rows - 1;
9357     }
9358 
9359     if (curbuf->b_p_ts <= 0)
9360     {
9361 	errmsg = e_positive;
9362 	curbuf->b_p_ts = 8;
9363     }
9364     if (p_tm < 0)
9365     {
9366 	errmsg = e_positive;
9367 	p_tm = 0;
9368     }
9369     if ((curwin->w_p_scr <= 0
9370 		|| (curwin->w_p_scr > curwin->w_height
9371 		    && curwin->w_height > 0))
9372 	    && full_screen)
9373     {
9374 	if (pp == &(curwin->w_p_scr))
9375 	{
9376 	    if (curwin->w_p_scr != 0)
9377 		errmsg = e_scroll;
9378 	    win_comp_scroll(curwin);
9379 	}
9380 	/* If 'scroll' became invalid because of a side effect silently adjust
9381 	 * it. */
9382 	else if (curwin->w_p_scr <= 0)
9383 	    curwin->w_p_scr = 1;
9384 	else /* curwin->w_p_scr > curwin->w_height */
9385 	    curwin->w_p_scr = curwin->w_height;
9386     }
9387     if (p_hi < 0)
9388     {
9389 	errmsg = e_positive;
9390 	p_hi = 0;
9391     }
9392     else if (p_hi > 10000)
9393     {
9394 	errmsg = e_invarg;
9395 	p_hi = 10000;
9396     }
9397     if (p_re < 0 || p_re > 2)
9398     {
9399 	errmsg = e_invarg;
9400 	p_re = 0;
9401     }
9402     if (p_report < 0)
9403     {
9404 	errmsg = e_positive;
9405 	p_report = 1;
9406     }
9407     if ((p_sj < -100 || p_sj >= Rows) && full_screen)
9408     {
9409 	if (Rows != old_Rows)	/* Rows changed, just adjust p_sj */
9410 	    p_sj = Rows / 2;
9411 	else
9412 	{
9413 	    errmsg = e_scroll;
9414 	    p_sj = 1;
9415 	}
9416     }
9417     if (p_so < 0 && full_screen)
9418     {
9419 	errmsg = e_positive;
9420 	p_so = 0;
9421     }
9422     if (p_siso < 0 && full_screen)
9423     {
9424 	errmsg = e_positive;
9425 	p_siso = 0;
9426     }
9427 #ifdef FEAT_CMDWIN
9428     if (p_cwh < 1)
9429     {
9430 	errmsg = e_positive;
9431 	p_cwh = 1;
9432     }
9433 #endif
9434     if (p_ut < 0)
9435     {
9436 	errmsg = e_positive;
9437 	p_ut = 2000;
9438     }
9439     if (p_ss < 0)
9440     {
9441 	errmsg = e_positive;
9442 	p_ss = 0;
9443     }
9444 
9445     /* May set global value for local option. */
9446     if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0)
9447 	*(long *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) = *pp;
9448 
9449     options[opt_idx].flags |= P_WAS_SET;
9450 
9451 #if defined(FEAT_EVAL)
9452     // Don't do this while starting up, failure or recursively.
9453     if (!starting && errmsg == NULL && *get_vim_var_str(VV_OPTION_TYPE) == NUL)
9454     {
9455 	char_u buf_old[11], buf_new[11], buf_type[7];
9456 	vim_snprintf((char *)buf_old, 10, "%ld", old_value);
9457 	vim_snprintf((char *)buf_new, 10, "%ld", value);
9458 	vim_snprintf((char *)buf_type, 7, "%s", (opt_flags & OPT_LOCAL) ? "local" : "global");
9459 	set_vim_var_string(VV_OPTION_NEW, buf_new, -1);
9460 	set_vim_var_string(VV_OPTION_OLD, buf_old, -1);
9461 	set_vim_var_string(VV_OPTION_TYPE, buf_type, -1);
9462 	apply_autocmds(EVENT_OPTIONSET, (char_u *) options[opt_idx].fullname, NULL, FALSE, NULL);
9463 	reset_v_option_vars();
9464     }
9465 #endif
9466 
9467     comp_col();			    /* in case 'columns' or 'ls' changed */
9468     if (curwin->w_curswant != MAXCOL
9469 		     && (options[opt_idx].flags & (P_CURSWANT | P_RALL)) != 0)
9470 	curwin->w_set_curswant = TRUE;
9471     check_redraw(options[opt_idx].flags);
9472 
9473     return errmsg;
9474 }
9475 
9476 /*
9477  * Called after an option changed: check if something needs to be redrawn.
9478  */
9479     static void
9480 check_redraw(long_u flags)
9481 {
9482     /* Careful: P_RCLR and P_RALL are a combination of other P_ flags */
9483     int		doclear = (flags & P_RCLR) == P_RCLR;
9484     int		all = ((flags & P_RALL) == P_RALL || doclear);
9485 
9486     if ((flags & P_RSTAT) || all)	/* mark all status lines dirty */
9487 	status_redraw_all();
9488 
9489     if ((flags & P_RBUF) || (flags & P_RWIN) || all)
9490 	changed_window_setting();
9491     if (flags & P_RBUF)
9492 	redraw_curbuf_later(NOT_VALID);
9493     if (flags & P_RWINONLY)
9494 	redraw_later(NOT_VALID);
9495     if (doclear)
9496 	redraw_all_later(CLEAR);
9497     else if (all)
9498 	redraw_all_later(NOT_VALID);
9499 }
9500 
9501 /*
9502  * Find index for option 'arg'.
9503  * Return -1 if not found.
9504  */
9505     static int
9506 findoption(char_u *arg)
9507 {
9508     int		    opt_idx;
9509     char	    *s, *p;
9510     static short    quick_tab[27] = {0, 0};	/* quick access table */
9511     int		    is_term_opt;
9512 
9513     /*
9514      * For first call: Initialize the quick-access table.
9515      * It contains the index for the first option that starts with a certain
9516      * letter.  There are 26 letters, plus the first "t_" option.
9517      */
9518     if (quick_tab[1] == 0)
9519     {
9520 	p = options[0].fullname;
9521 	for (opt_idx = 1; (s = options[opt_idx].fullname) != NULL; opt_idx++)
9522 	{
9523 	    if (s[0] != p[0])
9524 	    {
9525 		if (s[0] == 't' && s[1] == '_')
9526 		    quick_tab[26] = opt_idx;
9527 		else
9528 		    quick_tab[CharOrdLow(s[0])] = opt_idx;
9529 	    }
9530 	    p = s;
9531 	}
9532     }
9533 
9534     /*
9535      * Check for name starting with an illegal character.
9536      */
9537 #ifdef EBCDIC
9538     if (!islower(arg[0]))
9539 #else
9540     if (arg[0] < 'a' || arg[0] > 'z')
9541 #endif
9542 	return -1;
9543 
9544     is_term_opt = (arg[0] == 't' && arg[1] == '_');
9545     if (is_term_opt)
9546 	opt_idx = quick_tab[26];
9547     else
9548 	opt_idx = quick_tab[CharOrdLow(arg[0])];
9549     for ( ; (s = options[opt_idx].fullname) != NULL; opt_idx++)
9550     {
9551 	if (STRCMP(arg, s) == 0)		    /* match full name */
9552 	    break;
9553     }
9554     if (s == NULL && !is_term_opt)
9555     {
9556 	opt_idx = quick_tab[CharOrdLow(arg[0])];
9557 	for ( ; options[opt_idx].fullname != NULL; opt_idx++)
9558 	{
9559 	    s = options[opt_idx].shortname;
9560 	    if (s != NULL && STRCMP(arg, s) == 0)   /* match short name */
9561 		break;
9562 	    s = NULL;
9563 	}
9564     }
9565     if (s == NULL)
9566 	opt_idx = -1;
9567     return opt_idx;
9568 }
9569 
9570 #if defined(FEAT_EVAL) || defined(FEAT_TCL) || defined(FEAT_MZSCHEME)
9571 /*
9572  * Get the value for an option.
9573  *
9574  * Returns:
9575  * Number or Toggle option: 1, *numval gets value.
9576  *	     String option: 0, *stringval gets allocated string.
9577  * Hidden Number or Toggle option: -1.
9578  *	     hidden String option: -2.
9579  *		   unknown option: -3.
9580  */
9581     int
9582 get_option_value(
9583     char_u	*name,
9584     long	*numval,
9585     char_u	**stringval,	    /* NULL when only checking existence */
9586     int		opt_flags)
9587 {
9588     int		opt_idx;
9589     char_u	*varp;
9590 
9591     opt_idx = findoption(name);
9592     if (opt_idx < 0)		    /* unknown option */
9593     {
9594 	int key;
9595 
9596 	if (STRLEN(name) == 4 && name[0] == 't' && name[1] == '_'
9597 		&& (key = find_key_option(name, FALSE)) != 0)
9598 	{
9599 	    char_u key_name[2];
9600 	    char_u *p;
9601 
9602 	    if (key < 0)
9603 	    {
9604 		key_name[0] = KEY2TERMCAP0(key);
9605 		key_name[1] = KEY2TERMCAP1(key);
9606 	    }
9607 	    else
9608 	    {
9609 		key_name[0] = KS_KEY;
9610 		key_name[1] = (key & 0xff);
9611 	    }
9612 	    p = find_termcode(key_name);
9613 	    if (p != NULL)
9614 	    {
9615 		if (stringval != NULL)
9616 		    *stringval = vim_strsave(p);
9617 		return 0;
9618 	    }
9619 	}
9620 	return -3;
9621     }
9622 
9623     varp = get_varp_scope(&(options[opt_idx]), opt_flags);
9624 
9625     if (options[opt_idx].flags & P_STRING)
9626     {
9627 	if (varp == NULL)		    /* hidden option */
9628 	    return -2;
9629 	if (stringval != NULL)
9630 	{
9631 #ifdef FEAT_CRYPT
9632 	    /* never return the value of the crypt key */
9633 	    if ((char_u **)varp == &curbuf->b_p_key
9634 						&& **(char_u **)(varp) != NUL)
9635 		*stringval = vim_strsave((char_u *)"*****");
9636 	    else
9637 #endif
9638 		*stringval = vim_strsave(*(char_u **)(varp));
9639 	}
9640 	return 0;
9641     }
9642 
9643     if (varp == NULL)		    /* hidden option */
9644 	return -1;
9645     if (options[opt_idx].flags & P_NUM)
9646 	*numval = *(long *)varp;
9647     else
9648     {
9649 	/* Special case: 'modified' is b_changed, but we also want to consider
9650 	 * it set when 'ff' or 'fenc' changed. */
9651 	if ((int *)varp == &curbuf->b_changed)
9652 	    *numval = curbufIsChanged();
9653 	else
9654 	    *numval = (long) *(int *)varp;
9655     }
9656     return 1;
9657 }
9658 #endif
9659 
9660 #if defined(FEAT_PYTHON) || defined(FEAT_PYTHON3) || defined(PROTO)
9661 /*
9662  * Returns the option attributes and its value. Unlike the above function it
9663  * will return either global value or local value of the option depending on
9664  * what was requested, but it will never return global value if it was
9665  * requested to return local one and vice versa. Neither it will return
9666  * buffer-local value if it was requested to return window-local one.
9667  *
9668  * Pretends that option is absent if it is not present in the requested scope
9669  * (i.e. has no global, window-local or buffer-local value depending on
9670  * opt_type). Uses
9671  *
9672  * Returned flags:
9673  *       0 hidden or unknown option, also option that does not have requested
9674  *	   type (see SREQ_* in vim.h)
9675  *  see SOPT_* in vim.h for other flags
9676  *
9677  * Possible opt_type values: see SREQ_* in vim.h
9678  */
9679     int
9680 get_option_value_strict(
9681     char_u	*name,
9682     long	*numval,
9683     char_u	**stringval,	    /* NULL when only obtaining attributes */
9684     int		opt_type,
9685     void	*from)
9686 {
9687     int		opt_idx;
9688     char_u	*varp = NULL;
9689     struct vimoption *p;
9690     int		r = 0;
9691 
9692     opt_idx = findoption(name);
9693     if (opt_idx < 0)
9694 	return 0;
9695 
9696     p = &(options[opt_idx]);
9697 
9698     /* Hidden option */
9699     if (p->var == NULL)
9700 	return 0;
9701 
9702     if (p->flags & P_BOOL)
9703 	r |= SOPT_BOOL;
9704     else if (p->flags & P_NUM)
9705 	r |= SOPT_NUM;
9706     else if (p->flags & P_STRING)
9707 	r |= SOPT_STRING;
9708 
9709     if (p->indir == PV_NONE)
9710     {
9711 	if (opt_type == SREQ_GLOBAL)
9712 	    r |= SOPT_GLOBAL;
9713 	else
9714 	    return 0; /* Did not request global-only option */
9715     }
9716     else
9717     {
9718 	if (p->indir & PV_BOTH)
9719 	    r |= SOPT_GLOBAL;
9720 	else if (opt_type == SREQ_GLOBAL)
9721 	    return 0; /* Requested global option */
9722 
9723 	if (p->indir & PV_WIN)
9724 	{
9725 	    if (opt_type == SREQ_BUF)
9726 		return 0; /* Did not request window-local option */
9727 	    else
9728 		r |= SOPT_WIN;
9729 	}
9730 	else if (p->indir & PV_BUF)
9731 	{
9732 	    if (opt_type == SREQ_WIN)
9733 		return 0; /* Did not request buffer-local option */
9734 	    else
9735 		r |= SOPT_BUF;
9736 	}
9737     }
9738 
9739     if (stringval == NULL)
9740 	return r;
9741 
9742     if (opt_type == SREQ_GLOBAL)
9743 	varp = p->var;
9744     else
9745     {
9746 	if (opt_type == SREQ_BUF)
9747 	{
9748 	    /* Special case: 'modified' is b_changed, but we also want to
9749 	     * consider it set when 'ff' or 'fenc' changed. */
9750 	    if (p->indir == PV_MOD)
9751 	    {
9752 		*numval = bufIsChanged((buf_T *)from);
9753 		varp = NULL;
9754 	    }
9755 #ifdef FEAT_CRYPT
9756 	    else if (p->indir == PV_KEY)
9757 	    {
9758 		/* never return the value of the crypt key */
9759 		*stringval = NULL;
9760 		varp = NULL;
9761 	    }
9762 #endif
9763 	    else
9764 	    {
9765 		buf_T *save_curbuf = curbuf;
9766 
9767 		// only getting a pointer, no need to use aucmd_prepbuf()
9768 		curbuf = (buf_T *)from;
9769 		curwin->w_buffer = curbuf;
9770 		varp = get_varp(p);
9771 		curbuf = save_curbuf;
9772 		curwin->w_buffer = curbuf;
9773 	    }
9774 	}
9775 	else if (opt_type == SREQ_WIN)
9776 	{
9777 	    win_T	*save_curwin = curwin;
9778 
9779 	    curwin = (win_T *)from;
9780 	    curbuf = curwin->w_buffer;
9781 	    varp = get_varp(p);
9782 	    curwin = save_curwin;
9783 	    curbuf = curwin->w_buffer;
9784 	}
9785 	if (varp == p->var)
9786 	    return (r | SOPT_UNSET);
9787     }
9788 
9789     if (varp != NULL)
9790     {
9791 	if (p->flags & P_STRING)
9792 	    *stringval = vim_strsave(*(char_u **)(varp));
9793 	else if (p->flags & P_NUM)
9794 	    *numval = *(long *) varp;
9795 	else
9796 	    *numval = *(int *)varp;
9797     }
9798 
9799     return r;
9800 }
9801 
9802 /*
9803  * Iterate over options. First argument is a pointer to a pointer to a
9804  * structure inside options[] array, second is option type like in the above
9805  * function.
9806  *
9807  * If first argument points to NULL it is assumed that iteration just started
9808  * and caller needs the very first value.
9809  * If first argument points to the end marker function returns NULL and sets
9810  * first argument to NULL.
9811  *
9812  * Returns full option name for current option on each call.
9813  */
9814     char_u *
9815 option_iter_next(void **option, int opt_type)
9816 {
9817     struct vimoption	*ret = NULL;
9818     do
9819     {
9820 	if (*option == NULL)
9821 	    *option = (void *) options;
9822 	else if (((struct vimoption *) (*option))->fullname == NULL)
9823 	{
9824 	    *option = NULL;
9825 	    return NULL;
9826 	}
9827 	else
9828 	    *option = (void *) (((struct vimoption *) (*option)) + 1);
9829 
9830 	ret = ((struct vimoption *) (*option));
9831 
9832 	/* Hidden option */
9833 	if (ret->var == NULL)
9834 	{
9835 	    ret = NULL;
9836 	    continue;
9837 	}
9838 
9839 	switch (opt_type)
9840 	{
9841 	    case SREQ_GLOBAL:
9842 		if (!(ret->indir == PV_NONE || ret->indir & PV_BOTH))
9843 		    ret = NULL;
9844 		break;
9845 	    case SREQ_BUF:
9846 		if (!(ret->indir & PV_BUF))
9847 		    ret = NULL;
9848 		break;
9849 	    case SREQ_WIN:
9850 		if (!(ret->indir & PV_WIN))
9851 		    ret = NULL;
9852 		break;
9853 	    default:
9854 		internal_error("option_iter_next()");
9855 		return NULL;
9856 	}
9857     }
9858     while (ret == NULL);
9859 
9860     return (char_u *)ret->fullname;
9861 }
9862 #endif
9863 
9864 /*
9865  * Set the value of option "name".
9866  * Use "string" for string options, use "number" for other options.
9867  *
9868  * Returns NULL on success or error message on error.
9869  */
9870     char *
9871 set_option_value(
9872     char_u	*name,
9873     long	number,
9874     char_u	*string,
9875     int		opt_flags)	/* OPT_LOCAL or 0 (both) */
9876 {
9877     int		opt_idx;
9878     char_u	*varp;
9879     long_u	flags;
9880 
9881     opt_idx = findoption(name);
9882     if (opt_idx < 0)
9883     {
9884 	int key;
9885 
9886 	if (STRLEN(name) == 4 && name[0] == 't' && name[1] == '_'
9887 		&& (key = find_key_option(name, FALSE)) != 0)
9888 	{
9889 	    char_u key_name[2];
9890 
9891 	    if (key < 0)
9892 	    {
9893 		key_name[0] = KEY2TERMCAP0(key);
9894 		key_name[1] = KEY2TERMCAP1(key);
9895 	    }
9896 	    else
9897 	    {
9898 		key_name[0] = KS_KEY;
9899 		key_name[1] = (key & 0xff);
9900 	    }
9901 	    add_termcode(key_name, string, FALSE);
9902 	    if (full_screen)
9903 		ttest(FALSE);
9904 	    redraw_all_later(CLEAR);
9905 	    return NULL;
9906 	}
9907 
9908 	semsg(_("E355: Unknown option: %s"), name);
9909     }
9910     else
9911     {
9912 	flags = options[opt_idx].flags;
9913 #ifdef HAVE_SANDBOX
9914 	/* Disallow changing some options in the sandbox */
9915 	if (sandbox > 0 && (flags & P_SECURE))
9916 	{
9917 	    emsg(_(e_sandbox));
9918 	    return NULL;
9919 	}
9920 #endif
9921 	if (flags & P_STRING)
9922 	    return set_string_option(opt_idx, string, opt_flags);
9923 	else
9924 	{
9925 	    varp = get_varp_scope(&(options[opt_idx]), opt_flags);
9926 	    if (varp != NULL)	/* hidden option is not changed */
9927 	    {
9928 		if (number == 0 && string != NULL)
9929 		{
9930 		    int idx;
9931 
9932 		    /* Either we are given a string or we are setting option
9933 		     * to zero. */
9934 		    for (idx = 0; string[idx] == '0'; ++idx)
9935 			;
9936 		    if (string[idx] != NUL || idx == 0)
9937 		    {
9938 			/* There's another character after zeros or the string
9939 			 * is empty.  In both cases, we are trying to set a
9940 			 * num option using a string. */
9941 			semsg(_("E521: Number required: &%s = '%s'"),
9942 								name, string);
9943 			return NULL;     /* do nothing as we hit an error */
9944 
9945 		    }
9946 		}
9947 		if (flags & P_NUM)
9948 		    return set_num_option(opt_idx, varp, number,
9949 							  NULL, 0, opt_flags);
9950 		else
9951 		    return set_bool_option(opt_idx, varp, (int)number,
9952 								   opt_flags);
9953 	    }
9954 	}
9955     }
9956     return NULL;
9957 }
9958 
9959 /*
9960  * Get the terminal code for a terminal option.
9961  * Returns NULL when not found.
9962  */
9963     char_u *
9964 get_term_code(char_u *tname)
9965 {
9966     int	    opt_idx;
9967     char_u  *varp;
9968 
9969     if (tname[0] != 't' || tname[1] != '_' ||
9970 	    tname[2] == NUL || tname[3] == NUL)
9971 	return NULL;
9972     if ((opt_idx = findoption(tname)) >= 0)
9973     {
9974 	varp = get_varp(&(options[opt_idx]));
9975 	if (varp != NULL)
9976 	    varp = *(char_u **)(varp);
9977 	return varp;
9978     }
9979     return find_termcode(tname + 2);
9980 }
9981 
9982     char_u *
9983 get_highlight_default(void)
9984 {
9985     int i;
9986 
9987     i = findoption((char_u *)"hl");
9988     if (i >= 0)
9989 	return options[i].def_val[VI_DEFAULT];
9990     return (char_u *)NULL;
9991 }
9992 
9993     char_u *
9994 get_encoding_default(void)
9995 {
9996     int i;
9997 
9998     i = findoption((char_u *)"enc");
9999     if (i >= 0)
10000 	return options[i].def_val[VI_DEFAULT];
10001     return (char_u *)NULL;
10002 }
10003 
10004 /*
10005  * Translate a string like "t_xx", "<t_xx>" or "<S-Tab>" to a key number.
10006  * When "has_lt" is true there is a '<' before "*arg_arg".
10007  * Returns 0 when the key is not recognized.
10008  */
10009     static int
10010 find_key_option(char_u *arg_arg, int has_lt)
10011 {
10012     int		key = 0;
10013     int		modifiers;
10014     char_u	*arg = arg_arg;
10015 
10016     /*
10017      * Don't use get_special_key_code() for t_xx, we don't want it to call
10018      * add_termcap_entry().
10019      */
10020     if (arg[0] == 't' && arg[1] == '_' && arg[2] && arg[3])
10021 	key = TERMCAP2KEY(arg[2], arg[3]);
10022     else if (has_lt)
10023     {
10024 	--arg;			    /* put arg at the '<' */
10025 	modifiers = 0;
10026 	key = find_special_key(&arg, &modifiers, TRUE, TRUE, FALSE);
10027 	if (modifiers)		    /* can't handle modifiers here */
10028 	    key = 0;
10029     }
10030     return key;
10031 }
10032 
10033 /*
10034  * if 'all' == 0: show changed options
10035  * if 'all' == 1: show all normal options
10036  * if 'all' == 2: show all terminal options
10037  */
10038     static void
10039 showoptions(
10040     int		all,
10041     int		opt_flags)	/* OPT_LOCAL and/or OPT_GLOBAL */
10042 {
10043     struct vimoption	*p;
10044     int			col;
10045     int			isterm;
10046     char_u		*varp;
10047     struct vimoption	**items;
10048     int			item_count;
10049     int			run;
10050     int			row, rows;
10051     int			cols;
10052     int			i;
10053     int			len;
10054 
10055 #define INC 20
10056 #define GAP 3
10057 
10058     items = (struct vimoption **)alloc((unsigned)(sizeof(struct vimoption *) *
10059 								PARAM_COUNT));
10060     if (items == NULL)
10061 	return;
10062 
10063     /* Highlight title */
10064     if (all == 2)
10065 	msg_puts_title(_("\n--- Terminal codes ---"));
10066     else if (opt_flags & OPT_GLOBAL)
10067 	msg_puts_title(_("\n--- Global option values ---"));
10068     else if (opt_flags & OPT_LOCAL)
10069 	msg_puts_title(_("\n--- Local option values ---"));
10070     else
10071 	msg_puts_title(_("\n--- Options ---"));
10072 
10073     /*
10074      * do the loop two times:
10075      * 1. display the short items
10076      * 2. display the long items (only strings and numbers)
10077      */
10078     for (run = 1; run <= 2 && !got_int; ++run)
10079     {
10080 	/*
10081 	 * collect the items in items[]
10082 	 */
10083 	item_count = 0;
10084 	for (p = &options[0]; p->fullname != NULL; p++)
10085 	{
10086 	    // apply :filter /pat/
10087 	    if (message_filtered((char_u *) p->fullname))
10088 		continue;
10089 
10090 	    varp = NULL;
10091 	    isterm = istermoption(p);
10092 	    if (opt_flags != 0)
10093 	    {
10094 		if (p->indir != PV_NONE && !isterm)
10095 		    varp = get_varp_scope(p, opt_flags);
10096 	    }
10097 	    else
10098 		varp = get_varp(p);
10099 	    if (varp != NULL
10100 		    && ((all == 2 && isterm)
10101 			|| (all == 1 && !isterm)
10102 			|| (all == 0 && !optval_default(p, varp))))
10103 	    {
10104 		if (p->flags & P_BOOL)
10105 		    len = 1;		/* a toggle option fits always */
10106 		else
10107 		{
10108 		    option_value2string(p, opt_flags);
10109 		    len = (int)STRLEN(p->fullname) + vim_strsize(NameBuff) + 1;
10110 		}
10111 		if ((len <= INC - GAP && run == 1) ||
10112 						(len > INC - GAP && run == 2))
10113 		    items[item_count++] = p;
10114 	    }
10115 	}
10116 
10117 	/*
10118 	 * display the items
10119 	 */
10120 	if (run == 1)
10121 	{
10122 	    cols = (Columns + GAP - 3) / INC;
10123 	    if (cols == 0)
10124 		cols = 1;
10125 	    rows = (item_count + cols - 1) / cols;
10126 	}
10127 	else	/* run == 2 */
10128 	    rows = item_count;
10129 	for (row = 0; row < rows && !got_int; ++row)
10130 	{
10131 	    msg_putchar('\n');			/* go to next line */
10132 	    if (got_int)			/* 'q' typed in more */
10133 		break;
10134 	    col = 0;
10135 	    for (i = row; i < item_count; i += rows)
10136 	    {
10137 		msg_col = col;			/* make columns */
10138 		showoneopt(items[i], opt_flags);
10139 		col += INC;
10140 	    }
10141 	    out_flush();
10142 	    ui_breakcheck();
10143 	}
10144     }
10145     vim_free(items);
10146 }
10147 
10148 /*
10149  * Return TRUE if option "p" has its default value.
10150  */
10151     static int
10152 optval_default(struct vimoption *p, char_u *varp)
10153 {
10154     int		dvi;
10155 
10156     if (varp == NULL)
10157 	return TRUE;	    /* hidden option is always at default */
10158     dvi = ((p->flags & P_VI_DEF) || p_cp) ? VI_DEFAULT : VIM_DEFAULT;
10159     if (p->flags & P_NUM)
10160 	return (*(long *)varp == (long)(long_i)p->def_val[dvi]);
10161     if (p->flags & P_BOOL)
10162 			/* the cast to long is required for Manx C, long_i is
10163 			 * needed for MSVC */
10164 	return (*(int *)varp == (int)(long)(long_i)p->def_val[dvi]);
10165     /* P_STRING */
10166     return (STRCMP(*(char_u **)varp, p->def_val[dvi]) == 0);
10167 }
10168 
10169 /*
10170  * showoneopt: show the value of one option
10171  * must not be called with a hidden option!
10172  */
10173     static void
10174 showoneopt(
10175     struct vimoption	*p,
10176     int			opt_flags)	/* OPT_LOCAL or OPT_GLOBAL */
10177 {
10178     char_u	*varp;
10179     int		save_silent = silent_mode;
10180 
10181     silent_mode = FALSE;
10182     info_message = TRUE;	/* use mch_msg(), not mch_errmsg() */
10183 
10184     varp = get_varp_scope(p, opt_flags);
10185 
10186     /* for 'modified' we also need to check if 'ff' or 'fenc' changed. */
10187     if ((p->flags & P_BOOL) && ((int *)varp == &curbuf->b_changed
10188 					? !curbufIsChanged() : !*(int *)varp))
10189 	msg_puts("no");
10190     else if ((p->flags & P_BOOL) && *(int *)varp < 0)
10191 	msg_puts("--");
10192     else
10193 	msg_puts("  ");
10194     msg_puts(p->fullname);
10195     if (!(p->flags & P_BOOL))
10196     {
10197 	msg_putchar('=');
10198 	/* put value string in NameBuff */
10199 	option_value2string(p, opt_flags);
10200 	msg_outtrans(NameBuff);
10201     }
10202 
10203     silent_mode = save_silent;
10204     info_message = FALSE;
10205 }
10206 
10207 /*
10208  * Write modified options as ":set" commands to a file.
10209  *
10210  * There are three values for "opt_flags":
10211  * OPT_GLOBAL:		   Write global option values and fresh values of
10212  *			   buffer-local options (used for start of a session
10213  *			   file).
10214  * OPT_GLOBAL + OPT_LOCAL: Idem, add fresh values of window-local options for
10215  *			   curwin (used for a vimrc file).
10216  * OPT_LOCAL:		   Write buffer-local option values for curbuf, fresh
10217  *			   and local values for window-local options of
10218  *			   curwin.  Local values are also written when at the
10219  *			   default value, because a modeline or autocommand
10220  *			   may have set them when doing ":edit file" and the
10221  *			   user has set them back at the default or fresh
10222  *			   value.
10223  *			   When "local_only" is TRUE, don't write fresh
10224  *			   values, only local values (for ":mkview").
10225  * (fresh value = value used for a new buffer or window for a local option).
10226  *
10227  * Return FAIL on error, OK otherwise.
10228  */
10229     int
10230 makeset(FILE *fd, int opt_flags, int local_only)
10231 {
10232     struct vimoption	*p;
10233     char_u		*varp;			/* currently used value */
10234     char_u		*varp_fresh;		/* local value */
10235     char_u		*varp_local = NULL;	/* fresh value */
10236     char		*cmd;
10237     int			round;
10238     int			pri;
10239 
10240     /*
10241      * The options that don't have a default (terminal name, columns, lines)
10242      * are never written.  Terminal options are also not written.
10243      * Do the loop over "options[]" twice: once for options with the
10244      * P_PRI_MKRC flag and once without.
10245      */
10246     for (pri = 1; pri >= 0; --pri)
10247     {
10248       for (p = &options[0]; !istermoption(p); p++)
10249 	if (!(p->flags & P_NO_MKRC)
10250 		&& !istermoption(p)
10251 		&& ((pri == 1) == ((p->flags & P_PRI_MKRC) != 0)))
10252 	{
10253 	    /* skip global option when only doing locals */
10254 	    if (p->indir == PV_NONE && !(opt_flags & OPT_GLOBAL))
10255 		continue;
10256 
10257 	    /* Do not store options like 'bufhidden' and 'syntax' in a vimrc
10258 	     * file, they are always buffer-specific. */
10259 	    if ((opt_flags & OPT_GLOBAL) && (p->flags & P_NOGLOB))
10260 		continue;
10261 
10262 	    /* Global values are only written when not at the default value. */
10263 	    varp = get_varp_scope(p, opt_flags);
10264 	    if ((opt_flags & OPT_GLOBAL) && optval_default(p, varp))
10265 		continue;
10266 
10267 	    round = 2;
10268 	    if (p->indir != PV_NONE)
10269 	    {
10270 		if (p->var == VAR_WIN)
10271 		{
10272 		    /* skip window-local option when only doing globals */
10273 		    if (!(opt_flags & OPT_LOCAL))
10274 			continue;
10275 		    /* When fresh value of window-local option is not at the
10276 		     * default, need to write it too. */
10277 		    if (!(opt_flags & OPT_GLOBAL) && !local_only)
10278 		    {
10279 			varp_fresh = get_varp_scope(p, OPT_GLOBAL);
10280 			if (!optval_default(p, varp_fresh))
10281 			{
10282 			    round = 1;
10283 			    varp_local = varp;
10284 			    varp = varp_fresh;
10285 			}
10286 		    }
10287 		}
10288 	    }
10289 
10290 	    /* Round 1: fresh value for window-local options.
10291 	     * Round 2: other values */
10292 	    for ( ; round <= 2; varp = varp_local, ++round)
10293 	    {
10294 		if (round == 1 || (opt_flags & OPT_GLOBAL))
10295 		    cmd = "set";
10296 		else
10297 		    cmd = "setlocal";
10298 
10299 		if (p->flags & P_BOOL)
10300 		{
10301 		    if (put_setbool(fd, cmd, p->fullname, *(int *)varp) == FAIL)
10302 			return FAIL;
10303 		}
10304 		else if (p->flags & P_NUM)
10305 		{
10306 		    if (put_setnum(fd, cmd, p->fullname, (long *)varp) == FAIL)
10307 			return FAIL;
10308 		}
10309 		else    /* P_STRING */
10310 		{
10311 		    int		do_endif = FALSE;
10312 
10313 		    /* Don't set 'syntax' and 'filetype' again if the value is
10314 		     * already right, avoids reloading the syntax file. */
10315 		    if (
10316 #if defined(FEAT_SYN_HL)
10317 			    p->indir == PV_SYN ||
10318 #endif
10319 			    p->indir == PV_FT)
10320 		    {
10321 			if (fprintf(fd, "if &%s != '%s'", p->fullname,
10322 						       *(char_u **)(varp)) < 0
10323 				|| put_eol(fd) < 0)
10324 			    return FAIL;
10325 			do_endif = TRUE;
10326 		    }
10327 		    if (put_setstring(fd, cmd, p->fullname, (char_u **)varp,
10328 							     p->flags) == FAIL)
10329 			return FAIL;
10330 		    if (do_endif)
10331 		    {
10332 			if (put_line(fd, "endif") == FAIL)
10333 			    return FAIL;
10334 		    }
10335 		}
10336 	    }
10337 	}
10338     }
10339     return OK;
10340 }
10341 
10342 #if defined(FEAT_FOLDING) || defined(PROTO)
10343 /*
10344  * Generate set commands for the local fold options only.  Used when
10345  * 'sessionoptions' or 'viewoptions' contains "folds" but not "options".
10346  */
10347     int
10348 makefoldset(FILE *fd)
10349 {
10350     if (put_setstring(fd, "setlocal", "fdm", &curwin->w_p_fdm, 0) == FAIL
10351 # ifdef FEAT_EVAL
10352 	    || put_setstring(fd, "setlocal", "fde", &curwin->w_p_fde, 0)
10353 								       == FAIL
10354 # endif
10355 	    || put_setstring(fd, "setlocal", "fmr", &curwin->w_p_fmr, 0)
10356 								       == FAIL
10357 	    || put_setstring(fd, "setlocal", "fdi", &curwin->w_p_fdi, 0)
10358 								       == FAIL
10359 	    || put_setnum(fd, "setlocal", "fdl", &curwin->w_p_fdl) == FAIL
10360 	    || put_setnum(fd, "setlocal", "fml", &curwin->w_p_fml) == FAIL
10361 	    || put_setnum(fd, "setlocal", "fdn", &curwin->w_p_fdn) == FAIL
10362 	    || put_setbool(fd, "setlocal", "fen", curwin->w_p_fen) == FAIL
10363 	    )
10364 	return FAIL;
10365 
10366     return OK;
10367 }
10368 #endif
10369 
10370     static int
10371 put_setstring(
10372     FILE	*fd,
10373     char	*cmd,
10374     char	*name,
10375     char_u	**valuep,
10376     long_u	flags)
10377 {
10378     char_u	*s;
10379     char_u	*buf = NULL;
10380     char_u	*part = NULL;
10381     char_u	*p;
10382 
10383     if (fprintf(fd, "%s %s=", cmd, name) < 0)
10384 	return FAIL;
10385     if (*valuep != NULL)
10386     {
10387 	/* Output 'pastetoggle' as key names.  For other
10388 	 * options some characters have to be escaped with
10389 	 * CTRL-V or backslash */
10390 	if (valuep == &p_pt)
10391 	{
10392 	    s = *valuep;
10393 	    while (*s != NUL)
10394 		if (put_escstr(fd, str2special(&s, FALSE), 2) == FAIL)
10395 		    return FAIL;
10396 	}
10397 	// expand the option value, replace $HOME by ~
10398 	else if ((flags & P_EXPAND) != 0)
10399 	{
10400 	    int  size = (int)STRLEN(*valuep) + 1;
10401 
10402 	    // replace home directory in the whole option value into "buf"
10403 	    buf = alloc(size);
10404 	    if (buf == NULL)
10405 		goto fail;
10406 	    home_replace(NULL, *valuep, buf, size, FALSE);
10407 
10408 	    // If the option value is longer than MAXPATHL, we need to append
10409 	    // earch comma separated part of the option separately, so that it
10410 	    // can be expanded when read back.
10411 	    if (size >= MAXPATHL && (flags & P_COMMA) != 0
10412 					   && vim_strchr(*valuep, ',') != NULL)
10413 	    {
10414 		part = alloc(size);
10415 		if (part == NULL)
10416 		    goto fail;
10417 
10418 		// write line break to clear the option, e.g. ':set rtp='
10419 		if (put_eol(fd) == FAIL)
10420 		    goto fail;
10421 
10422 		p = buf;
10423 		while (*p != NUL)
10424 		{
10425 		    // for each comma separated option part, append value to
10426 		    // the option, :set rtp+=value
10427 		    if (fprintf(fd, "%s %s+=", cmd, name) < 0)
10428 			goto fail;
10429 		    (void)copy_option_part(&p, part, size,  ",");
10430 		    if (put_escstr(fd, part, 2) == FAIL || put_eol(fd) == FAIL)
10431 			goto fail;
10432 		}
10433 		vim_free(buf);
10434 		vim_free(part);
10435 		return OK;
10436 	    }
10437 	    if (put_escstr(fd, buf, 2) == FAIL)
10438 	    {
10439 		vim_free(buf);
10440 		return FAIL;
10441 	    }
10442 	    vim_free(buf);
10443 	}
10444 	else if (put_escstr(fd, *valuep, 2) == FAIL)
10445 	    return FAIL;
10446     }
10447     if (put_eol(fd) < 0)
10448 	return FAIL;
10449     return OK;
10450 fail:
10451     vim_free(buf);
10452     vim_free(part);
10453     return FAIL;
10454 }
10455 
10456     static int
10457 put_setnum(
10458     FILE	*fd,
10459     char	*cmd,
10460     char	*name,
10461     long	*valuep)
10462 {
10463     long	wc;
10464 
10465     if (fprintf(fd, "%s %s=", cmd, name) < 0)
10466 	return FAIL;
10467     if (wc_use_keyname((char_u *)valuep, &wc))
10468     {
10469 	/* print 'wildchar' and 'wildcharm' as a key name */
10470 	if (fputs((char *)get_special_key_name((int)wc, 0), fd) < 0)
10471 	    return FAIL;
10472     }
10473     else if (fprintf(fd, "%ld", *valuep) < 0)
10474 	return FAIL;
10475     if (put_eol(fd) < 0)
10476 	return FAIL;
10477     return OK;
10478 }
10479 
10480     static int
10481 put_setbool(
10482     FILE	*fd,
10483     char	*cmd,
10484     char	*name,
10485     int		value)
10486 {
10487     if (value < 0)	/* global/local option using global value */
10488 	return OK;
10489     if (fprintf(fd, "%s %s%s", cmd, value ? "" : "no", name) < 0
10490 	    || put_eol(fd) < 0)
10491 	return FAIL;
10492     return OK;
10493 }
10494 
10495 /*
10496  * Clear all the terminal options.
10497  * If the option has been allocated, free the memory.
10498  * Terminal options are never hidden or indirect.
10499  */
10500     void
10501 clear_termoptions(void)
10502 {
10503     /*
10504      * Reset a few things before clearing the old options. This may cause
10505      * outputting a few things that the terminal doesn't understand, but the
10506      * screen will be cleared later, so this is OK.
10507      */
10508 #ifdef FEAT_MOUSE_TTY
10509     mch_setmouse(FALSE);	    /* switch mouse off */
10510 #endif
10511 #ifdef FEAT_TITLE
10512     mch_restore_title(SAVE_RESTORE_BOTH);    /* restore window titles */
10513 #endif
10514 #if defined(FEAT_XCLIPBOARD) && defined(FEAT_GUI)
10515     /* When starting the GUI close the display opened for the clipboard.
10516      * After restoring the title, because that will need the display. */
10517     if (gui.starting)
10518 	clear_xterm_clip();
10519 #endif
10520     stoptermcap();			/* stop termcap mode */
10521 
10522     free_termoptions();
10523 }
10524 
10525     void
10526 free_termoptions(void)
10527 {
10528     struct vimoption   *p;
10529 
10530     for (p = options; p->fullname != NULL; p++)
10531 	if (istermoption(p))
10532 	{
10533 	    if (p->flags & P_ALLOCED)
10534 		free_string_option(*(char_u **)(p->var));
10535 	    if (p->flags & P_DEF_ALLOCED)
10536 		free_string_option(p->def_val[VI_DEFAULT]);
10537 	    *(char_u **)(p->var) = empty_option;
10538 	    p->def_val[VI_DEFAULT] = empty_option;
10539 	    p->flags &= ~(P_ALLOCED|P_DEF_ALLOCED);
10540 #ifdef FEAT_EVAL
10541 	    // remember where the option was cleared
10542 	    set_option_sctx_idx((int)(p - options), OPT_GLOBAL, current_sctx);
10543 #endif
10544 	}
10545     clear_termcodes();
10546 }
10547 
10548 /*
10549  * Free the string for one term option, if it was allocated.
10550  * Set the string to empty_option and clear allocated flag.
10551  * "var" points to the option value.
10552  */
10553     void
10554 free_one_termoption(char_u *var)
10555 {
10556     struct vimoption   *p;
10557 
10558     for (p = &options[0]; p->fullname != NULL; p++)
10559 	if (p->var == var)
10560 	{
10561 	    if (p->flags & P_ALLOCED)
10562 		free_string_option(*(char_u **)(p->var));
10563 	    *(char_u **)(p->var) = empty_option;
10564 	    p->flags &= ~P_ALLOCED;
10565 	    break;
10566 	}
10567 }
10568 
10569 /*
10570  * Set the terminal option defaults to the current value.
10571  * Used after setting the terminal name.
10572  */
10573     void
10574 set_term_defaults(void)
10575 {
10576     struct vimoption   *p;
10577 
10578     for (p = &options[0]; p->fullname != NULL; p++)
10579     {
10580 	if (istermoption(p) && p->def_val[VI_DEFAULT] != *(char_u **)(p->var))
10581 	{
10582 	    if (p->flags & P_DEF_ALLOCED)
10583 	    {
10584 		free_string_option(p->def_val[VI_DEFAULT]);
10585 		p->flags &= ~P_DEF_ALLOCED;
10586 	    }
10587 	    p->def_val[VI_DEFAULT] = *(char_u **)(p->var);
10588 	    if (p->flags & P_ALLOCED)
10589 	    {
10590 		p->flags |= P_DEF_ALLOCED;
10591 		p->flags &= ~P_ALLOCED;	 /* don't free the value now */
10592 	    }
10593 	}
10594     }
10595 }
10596 
10597 /*
10598  * return TRUE if 'p' starts with 't_'
10599  */
10600     static int
10601 istermoption(struct vimoption *p)
10602 {
10603     return (p->fullname[0] == 't' && p->fullname[1] == '_');
10604 }
10605 
10606 /*
10607  * Compute columns for ruler and shown command. 'sc_col' is also used to
10608  * decide what the maximum length of a message on the status line can be.
10609  * If there is a status line for the last window, 'sc_col' is independent
10610  * of 'ru_col'.
10611  */
10612 
10613 #define COL_RULER 17	    /* columns needed by standard ruler */
10614 
10615     void
10616 comp_col(void)
10617 {
10618 #if defined(FEAT_CMDL_INFO)
10619     int last_has_status = (p_ls == 2 || (p_ls == 1 && !ONE_WINDOW));
10620 
10621     sc_col = 0;
10622     ru_col = 0;
10623     if (p_ru)
10624     {
10625 # ifdef FEAT_STL_OPT
10626 	ru_col = (ru_wid ? ru_wid : COL_RULER) + 1;
10627 # else
10628 	ru_col = COL_RULER + 1;
10629 # endif
10630 	/* no last status line, adjust sc_col */
10631 	if (!last_has_status)
10632 	    sc_col = ru_col;
10633     }
10634     if (p_sc)
10635     {
10636 	sc_col += SHOWCMD_COLS;
10637 	if (!p_ru || last_has_status)	    /* no need for separating space */
10638 	    ++sc_col;
10639     }
10640     sc_col = Columns - sc_col;
10641     ru_col = Columns - ru_col;
10642     if (sc_col <= 0)		/* screen too narrow, will become a mess */
10643 	sc_col = 1;
10644     if (ru_col <= 0)
10645 	ru_col = 1;
10646 #else
10647     sc_col = Columns;
10648     ru_col = Columns;
10649 #endif
10650 }
10651 
10652 #if defined(FEAT_PYTHON) || defined(FEAT_PYTHON3) || defined(PROTO)
10653 /*
10654  * Unset local option value, similar to ":set opt<".
10655  */
10656     void
10657 unset_global_local_option(char_u *name, void *from)
10658 {
10659     struct vimoption *p;
10660     int		opt_idx;
10661     buf_T	*buf = (buf_T *)from;
10662 
10663     opt_idx = findoption(name);
10664     if (opt_idx < 0)
10665 	return;
10666     p = &(options[opt_idx]);
10667 
10668     switch ((int)p->indir)
10669     {
10670 	/* global option with local value: use local value if it's been set */
10671 	case PV_EP:
10672 	    clear_string_option(&buf->b_p_ep);
10673 	    break;
10674 	case PV_KP:
10675 	    clear_string_option(&buf->b_p_kp);
10676 	    break;
10677 	case PV_PATH:
10678 	    clear_string_option(&buf->b_p_path);
10679 	    break;
10680 	case PV_AR:
10681 	    buf->b_p_ar = -1;
10682 	    break;
10683 	case PV_BKC:
10684 	    clear_string_option(&buf->b_p_bkc);
10685 	    buf->b_bkc_flags = 0;
10686 	    break;
10687 	case PV_TAGS:
10688 	    clear_string_option(&buf->b_p_tags);
10689 	    break;
10690 	case PV_TC:
10691 	    clear_string_option(&buf->b_p_tc);
10692 	    buf->b_tc_flags = 0;
10693 	    break;
10694         case PV_SISO:
10695             curwin->w_p_siso = -1;
10696             break;
10697         case PV_SO:
10698             curwin->w_p_so = -1;
10699             break;
10700 #ifdef FEAT_FIND_ID
10701 	case PV_DEF:
10702 	    clear_string_option(&buf->b_p_def);
10703 	    break;
10704 	case PV_INC:
10705 	    clear_string_option(&buf->b_p_inc);
10706 	    break;
10707 #endif
10708 #ifdef FEAT_INS_EXPAND
10709 	case PV_DICT:
10710 	    clear_string_option(&buf->b_p_dict);
10711 	    break;
10712 	case PV_TSR:
10713 	    clear_string_option(&buf->b_p_tsr);
10714 	    break;
10715 #endif
10716 	case PV_FP:
10717 	    clear_string_option(&buf->b_p_fp);
10718 	    break;
10719 #ifdef FEAT_QUICKFIX
10720 	case PV_EFM:
10721 	    clear_string_option(&buf->b_p_efm);
10722 	    break;
10723 	case PV_GP:
10724 	    clear_string_option(&buf->b_p_gp);
10725 	    break;
10726 	case PV_MP:
10727 	    clear_string_option(&buf->b_p_mp);
10728 	    break;
10729 #endif
10730 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
10731 	case PV_BEXPR:
10732 	    clear_string_option(&buf->b_p_bexpr);
10733 	    break;
10734 #endif
10735 #if defined(FEAT_CRYPT)
10736 	case PV_CM:
10737 	    clear_string_option(&buf->b_p_cm);
10738 	    break;
10739 #endif
10740 #ifdef FEAT_STL_OPT
10741 	case PV_STL:
10742 	    clear_string_option(&((win_T *)from)->w_p_stl);
10743 	    break;
10744 #endif
10745 	case PV_UL:
10746 	    buf->b_p_ul = NO_LOCAL_UNDOLEVEL;
10747 	    break;
10748 #ifdef FEAT_LISP
10749 	case PV_LW:
10750 	    clear_string_option(&buf->b_p_lw);
10751 	    break;
10752 #endif
10753 	case PV_MENC:
10754 	    clear_string_option(&buf->b_p_menc);
10755 	    break;
10756     }
10757 }
10758 #endif
10759 
10760 /*
10761  * Get pointer to option variable, depending on local or global scope.
10762  */
10763     static char_u *
10764 get_varp_scope(struct vimoption *p, int opt_flags)
10765 {
10766     if ((opt_flags & OPT_GLOBAL) && p->indir != PV_NONE)
10767     {
10768 	if (p->var == VAR_WIN)
10769 	    return (char_u *)GLOBAL_WO(get_varp(p));
10770 	return p->var;
10771     }
10772     if ((opt_flags & OPT_LOCAL) && ((int)p->indir & PV_BOTH))
10773     {
10774 	switch ((int)p->indir)
10775 	{
10776 	    case PV_FP:   return (char_u *)&(curbuf->b_p_fp);
10777 #ifdef FEAT_QUICKFIX
10778 	    case PV_EFM:  return (char_u *)&(curbuf->b_p_efm);
10779 	    case PV_GP:   return (char_u *)&(curbuf->b_p_gp);
10780 	    case PV_MP:   return (char_u *)&(curbuf->b_p_mp);
10781 #endif
10782 	    case PV_EP:   return (char_u *)&(curbuf->b_p_ep);
10783 	    case PV_KP:   return (char_u *)&(curbuf->b_p_kp);
10784 	    case PV_PATH: return (char_u *)&(curbuf->b_p_path);
10785 	    case PV_AR:   return (char_u *)&(curbuf->b_p_ar);
10786 	    case PV_TAGS: return (char_u *)&(curbuf->b_p_tags);
10787 	    case PV_TC:   return (char_u *)&(curbuf->b_p_tc);
10788             case PV_SISO: return (char_u *)&(curwin->w_p_siso);
10789             case PV_SO:   return (char_u *)&(curwin->w_p_so);
10790 #ifdef FEAT_FIND_ID
10791 	    case PV_DEF:  return (char_u *)&(curbuf->b_p_def);
10792 	    case PV_INC:  return (char_u *)&(curbuf->b_p_inc);
10793 #endif
10794 #ifdef FEAT_INS_EXPAND
10795 	    case PV_DICT: return (char_u *)&(curbuf->b_p_dict);
10796 	    case PV_TSR:  return (char_u *)&(curbuf->b_p_tsr);
10797 #endif
10798 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
10799 	    case PV_BEXPR: return (char_u *)&(curbuf->b_p_bexpr);
10800 #endif
10801 #if defined(FEAT_CRYPT)
10802 	    case PV_CM:	  return (char_u *)&(curbuf->b_p_cm);
10803 #endif
10804 #ifdef FEAT_STL_OPT
10805 	    case PV_STL:  return (char_u *)&(curwin->w_p_stl);
10806 #endif
10807 	    case PV_UL:   return (char_u *)&(curbuf->b_p_ul);
10808 #ifdef FEAT_LISP
10809 	    case PV_LW:   return (char_u *)&(curbuf->b_p_lw);
10810 #endif
10811 	    case PV_BKC:  return (char_u *)&(curbuf->b_p_bkc);
10812 	    case PV_MENC: return (char_u *)&(curbuf->b_p_menc);
10813 	}
10814 	return NULL; /* "cannot happen" */
10815     }
10816     return get_varp(p);
10817 }
10818 
10819 /*
10820  * Get pointer to option variable.
10821  */
10822     static char_u *
10823 get_varp(struct vimoption *p)
10824 {
10825     /* hidden option, always return NULL */
10826     if (p->var == NULL)
10827 	return NULL;
10828 
10829     switch ((int)p->indir)
10830     {
10831 	case PV_NONE:	return p->var;
10832 
10833 	/* global option with local value: use local value if it's been set */
10834 	case PV_EP:	return *curbuf->b_p_ep != NUL
10835 				    ? (char_u *)&curbuf->b_p_ep : p->var;
10836 	case PV_KP:	return *curbuf->b_p_kp != NUL
10837 				    ? (char_u *)&curbuf->b_p_kp : p->var;
10838 	case PV_PATH:	return *curbuf->b_p_path != NUL
10839 				    ? (char_u *)&(curbuf->b_p_path) : p->var;
10840 	case PV_AR:	return curbuf->b_p_ar >= 0
10841 				    ? (char_u *)&(curbuf->b_p_ar) : p->var;
10842 	case PV_TAGS:	return *curbuf->b_p_tags != NUL
10843 				    ? (char_u *)&(curbuf->b_p_tags) : p->var;
10844 	case PV_TC:	return *curbuf->b_p_tc != NUL
10845 				    ? (char_u *)&(curbuf->b_p_tc) : p->var;
10846 	case PV_BKC:	return *curbuf->b_p_bkc != NUL
10847 				    ? (char_u *)&(curbuf->b_p_bkc) : p->var;
10848 	case PV_SISO:	return curwin->w_p_siso >= 0
10849 				    ? (char_u *)&(curwin->w_p_siso) : p->var;
10850 	case PV_SO:	return curwin->w_p_so >= 0
10851 				    ? (char_u *)&(curwin->w_p_so) : p->var;
10852 #ifdef FEAT_FIND_ID
10853 	case PV_DEF:	return *curbuf->b_p_def != NUL
10854 				    ? (char_u *)&(curbuf->b_p_def) : p->var;
10855 	case PV_INC:	return *curbuf->b_p_inc != NUL
10856 				    ? (char_u *)&(curbuf->b_p_inc) : p->var;
10857 #endif
10858 #ifdef FEAT_INS_EXPAND
10859 	case PV_DICT:	return *curbuf->b_p_dict != NUL
10860 				    ? (char_u *)&(curbuf->b_p_dict) : p->var;
10861 	case PV_TSR:	return *curbuf->b_p_tsr != NUL
10862 				    ? (char_u *)&(curbuf->b_p_tsr) : p->var;
10863 #endif
10864 	case PV_FP:	return *curbuf->b_p_fp != NUL
10865 				    ? (char_u *)&(curbuf->b_p_fp) : p->var;
10866 #ifdef FEAT_QUICKFIX
10867 	case PV_EFM:	return *curbuf->b_p_efm != NUL
10868 				    ? (char_u *)&(curbuf->b_p_efm) : p->var;
10869 	case PV_GP:	return *curbuf->b_p_gp != NUL
10870 				    ? (char_u *)&(curbuf->b_p_gp) : p->var;
10871 	case PV_MP:	return *curbuf->b_p_mp != NUL
10872 				    ? (char_u *)&(curbuf->b_p_mp) : p->var;
10873 #endif
10874 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
10875 	case PV_BEXPR:	return *curbuf->b_p_bexpr != NUL
10876 				    ? (char_u *)&(curbuf->b_p_bexpr) : p->var;
10877 #endif
10878 #if defined(FEAT_CRYPT)
10879 	case PV_CM:	return *curbuf->b_p_cm != NUL
10880 				    ? (char_u *)&(curbuf->b_p_cm) : p->var;
10881 #endif
10882 #ifdef FEAT_STL_OPT
10883 	case PV_STL:	return *curwin->w_p_stl != NUL
10884 				    ? (char_u *)&(curwin->w_p_stl) : p->var;
10885 #endif
10886 	case PV_UL:	return curbuf->b_p_ul != NO_LOCAL_UNDOLEVEL
10887 				    ? (char_u *)&(curbuf->b_p_ul) : p->var;
10888 #ifdef FEAT_LISP
10889 	case PV_LW:	return *curbuf->b_p_lw != NUL
10890 				    ? (char_u *)&(curbuf->b_p_lw) : p->var;
10891 #endif
10892 	case PV_MENC:	return *curbuf->b_p_menc != NUL
10893 				    ? (char_u *)&(curbuf->b_p_menc) : p->var;
10894 
10895 #ifdef FEAT_ARABIC
10896 	case PV_ARAB:	return (char_u *)&(curwin->w_p_arab);
10897 #endif
10898 	case PV_LIST:	return (char_u *)&(curwin->w_p_list);
10899 #ifdef FEAT_SPELL
10900 	case PV_SPELL:	return (char_u *)&(curwin->w_p_spell);
10901 #endif
10902 #ifdef FEAT_SYN_HL
10903 	case PV_CUC:	return (char_u *)&(curwin->w_p_cuc);
10904 	case PV_CUL:	return (char_u *)&(curwin->w_p_cul);
10905 	case PV_CC:	return (char_u *)&(curwin->w_p_cc);
10906 #endif
10907 #ifdef FEAT_DIFF
10908 	case PV_DIFF:	return (char_u *)&(curwin->w_p_diff);
10909 #endif
10910 #ifdef FEAT_FOLDING
10911 	case PV_FDC:	return (char_u *)&(curwin->w_p_fdc);
10912 	case PV_FEN:	return (char_u *)&(curwin->w_p_fen);
10913 	case PV_FDI:	return (char_u *)&(curwin->w_p_fdi);
10914 	case PV_FDL:	return (char_u *)&(curwin->w_p_fdl);
10915 	case PV_FDM:	return (char_u *)&(curwin->w_p_fdm);
10916 	case PV_FML:	return (char_u *)&(curwin->w_p_fml);
10917 	case PV_FDN:	return (char_u *)&(curwin->w_p_fdn);
10918 # ifdef FEAT_EVAL
10919 	case PV_FDE:	return (char_u *)&(curwin->w_p_fde);
10920 	case PV_FDT:	return (char_u *)&(curwin->w_p_fdt);
10921 # endif
10922 	case PV_FMR:	return (char_u *)&(curwin->w_p_fmr);
10923 #endif
10924 	case PV_NU:	return (char_u *)&(curwin->w_p_nu);
10925 	case PV_RNU:	return (char_u *)&(curwin->w_p_rnu);
10926 #ifdef FEAT_LINEBREAK
10927 	case PV_NUW:	return (char_u *)&(curwin->w_p_nuw);
10928 #endif
10929 	case PV_WFH:	return (char_u *)&(curwin->w_p_wfh);
10930 	case PV_WFW:	return (char_u *)&(curwin->w_p_wfw);
10931 #if defined(FEAT_QUICKFIX)
10932 	case PV_PVW:	return (char_u *)&(curwin->w_p_pvw);
10933 #endif
10934 #ifdef FEAT_RIGHTLEFT
10935 	case PV_RL:	return (char_u *)&(curwin->w_p_rl);
10936 	case PV_RLC:	return (char_u *)&(curwin->w_p_rlc);
10937 #endif
10938 	case PV_SCROLL:	return (char_u *)&(curwin->w_p_scr);
10939 	case PV_WRAP:	return (char_u *)&(curwin->w_p_wrap);
10940 #ifdef FEAT_LINEBREAK
10941 	case PV_LBR:	return (char_u *)&(curwin->w_p_lbr);
10942 	case PV_BRI:	return (char_u *)&(curwin->w_p_bri);
10943 	case PV_BRIOPT: return (char_u *)&(curwin->w_p_briopt);
10944 #endif
10945 	case PV_SCBIND: return (char_u *)&(curwin->w_p_scb);
10946 	case PV_CRBIND: return (char_u *)&(curwin->w_p_crb);
10947 #ifdef FEAT_CONCEAL
10948 	case PV_COCU:   return (char_u *)&(curwin->w_p_cocu);
10949 	case PV_COLE:   return (char_u *)&(curwin->w_p_cole);
10950 #endif
10951 #ifdef FEAT_TERMINAL
10952 	case PV_TWK:    return (char_u *)&(curwin->w_p_twk);
10953 	case PV_TWS:    return (char_u *)&(curwin->w_p_tws);
10954 	case PV_TWSL:	return (char_u *)&(curbuf->b_p_twsl);
10955 	case PV_TMOD:	return (char_u *)&(curwin->w_p_tmod);
10956 #endif
10957 
10958 	case PV_AI:	return (char_u *)&(curbuf->b_p_ai);
10959 	case PV_BIN:	return (char_u *)&(curbuf->b_p_bin);
10960 	case PV_BOMB:	return (char_u *)&(curbuf->b_p_bomb);
10961 	case PV_BH:	return (char_u *)&(curbuf->b_p_bh);
10962 	case PV_BT:	return (char_u *)&(curbuf->b_p_bt);
10963 	case PV_BL:	return (char_u *)&(curbuf->b_p_bl);
10964 	case PV_CI:	return (char_u *)&(curbuf->b_p_ci);
10965 #ifdef FEAT_CINDENT
10966 	case PV_CIN:	return (char_u *)&(curbuf->b_p_cin);
10967 	case PV_CINK:	return (char_u *)&(curbuf->b_p_cink);
10968 	case PV_CINO:	return (char_u *)&(curbuf->b_p_cino);
10969 #endif
10970 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
10971 	case PV_CINW:	return (char_u *)&(curbuf->b_p_cinw);
10972 #endif
10973 #ifdef FEAT_COMMENTS
10974 	case PV_COM:	return (char_u *)&(curbuf->b_p_com);
10975 #endif
10976 #ifdef FEAT_FOLDING
10977 	case PV_CMS:	return (char_u *)&(curbuf->b_p_cms);
10978 #endif
10979 #ifdef FEAT_INS_EXPAND
10980 	case PV_CPT:	return (char_u *)&(curbuf->b_p_cpt);
10981 #endif
10982 #ifdef FEAT_COMPL_FUNC
10983 	case PV_CFU:	return (char_u *)&(curbuf->b_p_cfu);
10984 	case PV_OFU:	return (char_u *)&(curbuf->b_p_ofu);
10985 #endif
10986 	case PV_EOL:	return (char_u *)&(curbuf->b_p_eol);
10987 	case PV_FIXEOL:	return (char_u *)&(curbuf->b_p_fixeol);
10988 	case PV_ET:	return (char_u *)&(curbuf->b_p_et);
10989 	case PV_FENC:	return (char_u *)&(curbuf->b_p_fenc);
10990 	case PV_FF:	return (char_u *)&(curbuf->b_p_ff);
10991 	case PV_FT:	return (char_u *)&(curbuf->b_p_ft);
10992 	case PV_FO:	return (char_u *)&(curbuf->b_p_fo);
10993 	case PV_FLP:	return (char_u *)&(curbuf->b_p_flp);
10994 	case PV_IMI:	return (char_u *)&(curbuf->b_p_iminsert);
10995 	case PV_IMS:	return (char_u *)&(curbuf->b_p_imsearch);
10996 	case PV_INF:	return (char_u *)&(curbuf->b_p_inf);
10997 	case PV_ISK:	return (char_u *)&(curbuf->b_p_isk);
10998 #ifdef FEAT_FIND_ID
10999 # ifdef FEAT_EVAL
11000 	case PV_INEX:	return (char_u *)&(curbuf->b_p_inex);
11001 # endif
11002 #endif
11003 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
11004 	case PV_INDE:	return (char_u *)&(curbuf->b_p_inde);
11005 	case PV_INDK:	return (char_u *)&(curbuf->b_p_indk);
11006 #endif
11007 #ifdef FEAT_EVAL
11008 	case PV_FEX:	return (char_u *)&(curbuf->b_p_fex);
11009 #endif
11010 #ifdef FEAT_CRYPT
11011 	case PV_KEY:	return (char_u *)&(curbuf->b_p_key);
11012 #endif
11013 #ifdef FEAT_LISP
11014 	case PV_LISP:	return (char_u *)&(curbuf->b_p_lisp);
11015 #endif
11016 	case PV_ML:	return (char_u *)&(curbuf->b_p_ml);
11017 	case PV_MPS:	return (char_u *)&(curbuf->b_p_mps);
11018 	case PV_MA:	return (char_u *)&(curbuf->b_p_ma);
11019 	case PV_MOD:	return (char_u *)&(curbuf->b_changed);
11020 	case PV_NF:	return (char_u *)&(curbuf->b_p_nf);
11021 	case PV_PI:	return (char_u *)&(curbuf->b_p_pi);
11022 #ifdef FEAT_TEXTOBJ
11023 	case PV_QE:	return (char_u *)&(curbuf->b_p_qe);
11024 #endif
11025 	case PV_RO:	return (char_u *)&(curbuf->b_p_ro);
11026 #ifdef FEAT_SMARTINDENT
11027 	case PV_SI:	return (char_u *)&(curbuf->b_p_si);
11028 #endif
11029 	case PV_SN:	return (char_u *)&(curbuf->b_p_sn);
11030 	case PV_STS:	return (char_u *)&(curbuf->b_p_sts);
11031 #ifdef FEAT_SEARCHPATH
11032 	case PV_SUA:	return (char_u *)&(curbuf->b_p_sua);
11033 #endif
11034 	case PV_SWF:	return (char_u *)&(curbuf->b_p_swf);
11035 #ifdef FEAT_SYN_HL
11036 	case PV_SMC:	return (char_u *)&(curbuf->b_p_smc);
11037 	case PV_SYN:	return (char_u *)&(curbuf->b_p_syn);
11038 #endif
11039 #ifdef FEAT_SPELL
11040 	case PV_SPC:	return (char_u *)&(curwin->w_s->b_p_spc);
11041 	case PV_SPF:	return (char_u *)&(curwin->w_s->b_p_spf);
11042 	case PV_SPL:	return (char_u *)&(curwin->w_s->b_p_spl);
11043 #endif
11044 	case PV_SW:	return (char_u *)&(curbuf->b_p_sw);
11045 	case PV_TS:	return (char_u *)&(curbuf->b_p_ts);
11046 	case PV_TW:	return (char_u *)&(curbuf->b_p_tw);
11047 	case PV_TX:	return (char_u *)&(curbuf->b_p_tx);
11048 #ifdef FEAT_PERSISTENT_UNDO
11049 	case PV_UDF:	return (char_u *)&(curbuf->b_p_udf);
11050 #endif
11051 	case PV_WM:	return (char_u *)&(curbuf->b_p_wm);
11052 #ifdef FEAT_KEYMAP
11053 	case PV_KMAP:	return (char_u *)&(curbuf->b_p_keymap);
11054 #endif
11055 #ifdef FEAT_SIGNS
11056 	case PV_SCL:	return (char_u *)&(curwin->w_p_scl);
11057 #endif
11058 #ifdef FEAT_VARTABS
11059 	case PV_VSTS:	return (char_u *)&(curbuf->b_p_vsts);
11060 	case PV_VTS:	return (char_u *)&(curbuf->b_p_vts);
11061 #endif
11062 	default:	iemsg(_("E356: get_varp ERROR"));
11063     }
11064     /* always return a valid pointer to avoid a crash! */
11065     return (char_u *)&(curbuf->b_p_wm);
11066 }
11067 
11068 /*
11069  * Get the value of 'equalprg', either the buffer-local one or the global one.
11070  */
11071     char_u *
11072 get_equalprg(void)
11073 {
11074     if (*curbuf->b_p_ep == NUL)
11075 	return p_ep;
11076     return curbuf->b_p_ep;
11077 }
11078 
11079 /*
11080  * Copy options from one window to another.
11081  * Used when splitting a window.
11082  */
11083     void
11084 win_copy_options(win_T *wp_from, win_T *wp_to)
11085 {
11086     copy_winopt(&wp_from->w_onebuf_opt, &wp_to->w_onebuf_opt);
11087     copy_winopt(&wp_from->w_allbuf_opt, &wp_to->w_allbuf_opt);
11088 # ifdef FEAT_RIGHTLEFT
11089 #  ifdef FEAT_FKMAP
11090     /* Is this right? */
11091     wp_to->w_farsi = wp_from->w_farsi;
11092 #  endif
11093 # endif
11094 #if defined(FEAT_LINEBREAK)
11095     briopt_check(wp_to);
11096 #endif
11097 }
11098 
11099 /*
11100  * Copy the options from one winopt_T to another.
11101  * Doesn't free the old option values in "to", use clear_winopt() for that.
11102  * The 'scroll' option is not copied, because it depends on the window height.
11103  * The 'previewwindow' option is reset, there can be only one preview window.
11104  */
11105     void
11106 copy_winopt(winopt_T *from, winopt_T *to)
11107 {
11108 #ifdef FEAT_ARABIC
11109     to->wo_arab = from->wo_arab;
11110 #endif
11111     to->wo_list = from->wo_list;
11112     to->wo_nu = from->wo_nu;
11113     to->wo_rnu = from->wo_rnu;
11114 #ifdef FEAT_LINEBREAK
11115     to->wo_nuw = from->wo_nuw;
11116 #endif
11117 #ifdef FEAT_RIGHTLEFT
11118     to->wo_rl  = from->wo_rl;
11119     to->wo_rlc = vim_strsave(from->wo_rlc);
11120 #endif
11121 #ifdef FEAT_STL_OPT
11122     to->wo_stl = vim_strsave(from->wo_stl);
11123 #endif
11124     to->wo_wrap = from->wo_wrap;
11125 #ifdef FEAT_DIFF
11126     to->wo_wrap_save = from->wo_wrap_save;
11127 #endif
11128 #ifdef FEAT_LINEBREAK
11129     to->wo_lbr = from->wo_lbr;
11130     to->wo_bri = from->wo_bri;
11131     to->wo_briopt = vim_strsave(from->wo_briopt);
11132 #endif
11133     to->wo_scb = from->wo_scb;
11134     to->wo_scb_save = from->wo_scb_save;
11135     to->wo_crb = from->wo_crb;
11136     to->wo_crb_save = from->wo_crb_save;
11137 #ifdef FEAT_SPELL
11138     to->wo_spell = from->wo_spell;
11139 #endif
11140 #ifdef FEAT_SYN_HL
11141     to->wo_cuc = from->wo_cuc;
11142     to->wo_cul = from->wo_cul;
11143     to->wo_cc = vim_strsave(from->wo_cc);
11144 #endif
11145 #ifdef FEAT_DIFF
11146     to->wo_diff = from->wo_diff;
11147     to->wo_diff_saved = from->wo_diff_saved;
11148 #endif
11149 #ifdef FEAT_CONCEAL
11150     to->wo_cocu = vim_strsave(from->wo_cocu);
11151     to->wo_cole = from->wo_cole;
11152 #endif
11153 #ifdef FEAT_TERMINAL
11154     to->wo_twk = vim_strsave(from->wo_twk);
11155     to->wo_tws = vim_strsave(from->wo_tws);
11156     to->wo_tmod = vim_strsave(from->wo_tmod);
11157 #endif
11158 #ifdef FEAT_FOLDING
11159     to->wo_fdc = from->wo_fdc;
11160     to->wo_fdc_save = from->wo_fdc_save;
11161     to->wo_fen = from->wo_fen;
11162     to->wo_fen_save = from->wo_fen_save;
11163     to->wo_fdi = vim_strsave(from->wo_fdi);
11164     to->wo_fml = from->wo_fml;
11165     to->wo_fdl = from->wo_fdl;
11166     to->wo_fdl_save = from->wo_fdl_save;
11167     to->wo_fdm = vim_strsave(from->wo_fdm);
11168     to->wo_fdm_save = from->wo_diff_saved
11169 			      ? vim_strsave(from->wo_fdm_save) : empty_option;
11170     to->wo_fdn = from->wo_fdn;
11171 # ifdef FEAT_EVAL
11172     to->wo_fde = vim_strsave(from->wo_fde);
11173     to->wo_fdt = vim_strsave(from->wo_fdt);
11174 # endif
11175     to->wo_fmr = vim_strsave(from->wo_fmr);
11176 #endif
11177 #ifdef FEAT_SIGNS
11178     to->wo_scl = vim_strsave(from->wo_scl);
11179 #endif
11180     check_winopt(to);		/* don't want NULL pointers */
11181 }
11182 
11183 /*
11184  * Check string options in a window for a NULL value.
11185  */
11186     void
11187 check_win_options(win_T *win)
11188 {
11189     check_winopt(&win->w_onebuf_opt);
11190     check_winopt(&win->w_allbuf_opt);
11191 }
11192 
11193 /*
11194  * Check for NULL pointers in a winopt_T and replace them with empty_option.
11195  */
11196     static void
11197 check_winopt(winopt_T *wop UNUSED)
11198 {
11199 #ifdef FEAT_FOLDING
11200     check_string_option(&wop->wo_fdi);
11201     check_string_option(&wop->wo_fdm);
11202     check_string_option(&wop->wo_fdm_save);
11203 # ifdef FEAT_EVAL
11204     check_string_option(&wop->wo_fde);
11205     check_string_option(&wop->wo_fdt);
11206 # endif
11207     check_string_option(&wop->wo_fmr);
11208 #endif
11209 #ifdef FEAT_SIGNS
11210     check_string_option(&wop->wo_scl);
11211 #endif
11212 #ifdef FEAT_RIGHTLEFT
11213     check_string_option(&wop->wo_rlc);
11214 #endif
11215 #ifdef FEAT_STL_OPT
11216     check_string_option(&wop->wo_stl);
11217 #endif
11218 #ifdef FEAT_SYN_HL
11219     check_string_option(&wop->wo_cc);
11220 #endif
11221 #ifdef FEAT_CONCEAL
11222     check_string_option(&wop->wo_cocu);
11223 #endif
11224 #ifdef FEAT_TERMINAL
11225     check_string_option(&wop->wo_twk);
11226     check_string_option(&wop->wo_tws);
11227     check_string_option(&wop->wo_tmod);
11228 #endif
11229 #ifdef FEAT_LINEBREAK
11230     check_string_option(&wop->wo_briopt);
11231 #endif
11232 }
11233 
11234 /*
11235  * Free the allocated memory inside a winopt_T.
11236  */
11237     void
11238 clear_winopt(winopt_T *wop UNUSED)
11239 {
11240 #ifdef FEAT_FOLDING
11241     clear_string_option(&wop->wo_fdi);
11242     clear_string_option(&wop->wo_fdm);
11243     clear_string_option(&wop->wo_fdm_save);
11244 # ifdef FEAT_EVAL
11245     clear_string_option(&wop->wo_fde);
11246     clear_string_option(&wop->wo_fdt);
11247 # endif
11248     clear_string_option(&wop->wo_fmr);
11249 #endif
11250 #ifdef FEAT_SIGNS
11251     clear_string_option(&wop->wo_scl);
11252 #endif
11253 #ifdef FEAT_LINEBREAK
11254     clear_string_option(&wop->wo_briopt);
11255 #endif
11256 #ifdef FEAT_RIGHTLEFT
11257     clear_string_option(&wop->wo_rlc);
11258 #endif
11259 #ifdef FEAT_STL_OPT
11260     clear_string_option(&wop->wo_stl);
11261 #endif
11262 #ifdef FEAT_SYN_HL
11263     clear_string_option(&wop->wo_cc);
11264 #endif
11265 #ifdef FEAT_CONCEAL
11266     clear_string_option(&wop->wo_cocu);
11267 #endif
11268 #ifdef FEAT_TERMINAL
11269     clear_string_option(&wop->wo_twk);
11270     clear_string_option(&wop->wo_tws);
11271     clear_string_option(&wop->wo_tmod);
11272 #endif
11273 }
11274 
11275 /*
11276  * Copy global option values to local options for one buffer.
11277  * Used when creating a new buffer and sometimes when entering a buffer.
11278  * flags:
11279  * BCO_ENTER	We will enter the buf buffer.
11280  * BCO_ALWAYS	Always copy the options, but only set b_p_initialized when
11281  *		appropriate.
11282  * BCO_NOHELP	Don't copy the values to a help buffer.
11283  */
11284     void
11285 buf_copy_options(buf_T *buf, int flags)
11286 {
11287     int		should_copy = TRUE;
11288     char_u	*save_p_isk = NULL;	    /* init for GCC */
11289     int		dont_do_help;
11290     int		did_isk = FALSE;
11291 
11292     /*
11293      * Skip this when the option defaults have not been set yet.  Happens when
11294      * main() allocates the first buffer.
11295      */
11296     if (p_cpo != NULL)
11297     {
11298 	/*
11299 	 * Always copy when entering and 'cpo' contains 'S'.
11300 	 * Don't copy when already initialized.
11301 	 * Don't copy when 'cpo' contains 's' and not entering.
11302 	 * 'S'	BCO_ENTER  initialized	's'  should_copy
11303 	 * yes	  yes	       X	 X	TRUE
11304 	 * yes	  no	      yes	 X	FALSE
11305 	 * no	   X	      yes	 X	FALSE
11306 	 *  X	  no	      no	yes	FALSE
11307 	 *  X	  no	      no	no	TRUE
11308 	 * no	  yes	      no	 X	TRUE
11309 	 */
11310 	if ((vim_strchr(p_cpo, CPO_BUFOPTGLOB) == NULL || !(flags & BCO_ENTER))
11311 		&& (buf->b_p_initialized
11312 		    || (!(flags & BCO_ENTER)
11313 			&& vim_strchr(p_cpo, CPO_BUFOPT) != NULL)))
11314 	    should_copy = FALSE;
11315 
11316 	if (should_copy || (flags & BCO_ALWAYS))
11317 	{
11318 	    /* Don't copy the options specific to a help buffer when
11319 	     * BCO_NOHELP is given or the options were initialized already
11320 	     * (jumping back to a help file with CTRL-T or CTRL-O) */
11321 	    dont_do_help = ((flags & BCO_NOHELP) && buf->b_help)
11322 						       || buf->b_p_initialized;
11323 	    if (dont_do_help)		/* don't free b_p_isk */
11324 	    {
11325 		save_p_isk = buf->b_p_isk;
11326 		buf->b_p_isk = NULL;
11327 	    }
11328 	    /*
11329 	     * Always free the allocated strings.  If not already initialized,
11330 	     * reset 'readonly' and copy 'fileformat'.
11331 	     */
11332 	    if (!buf->b_p_initialized)
11333 	    {
11334 		free_buf_options(buf, TRUE);
11335 		buf->b_p_ro = FALSE;		/* don't copy readonly */
11336 		buf->b_p_tx = p_tx;
11337 		buf->b_p_fenc = vim_strsave(p_fenc);
11338 		switch (*p_ffs)
11339 		{
11340 		    case 'm':
11341 			buf->b_p_ff = vim_strsave((char_u *)FF_MAC); break;
11342 		    case 'd':
11343 			buf->b_p_ff = vim_strsave((char_u *)FF_DOS); break;
11344 		    case 'u':
11345 			buf->b_p_ff = vim_strsave((char_u *)FF_UNIX); break;
11346 		    default:
11347 			buf->b_p_ff = vim_strsave(p_ff);
11348 		}
11349 		if (buf->b_p_ff != NULL)
11350 		    buf->b_start_ffc = *buf->b_p_ff;
11351 		buf->b_p_bh = empty_option;
11352 		buf->b_p_bt = empty_option;
11353 	    }
11354 	    else
11355 		free_buf_options(buf, FALSE);
11356 
11357 	    buf->b_p_ai = p_ai;
11358 	    buf->b_p_ai_nopaste = p_ai_nopaste;
11359 	    buf->b_p_sw = p_sw;
11360 	    buf->b_p_tw = p_tw;
11361 	    buf->b_p_tw_nopaste = p_tw_nopaste;
11362 	    buf->b_p_tw_nobin = p_tw_nobin;
11363 	    buf->b_p_wm = p_wm;
11364 	    buf->b_p_wm_nopaste = p_wm_nopaste;
11365 	    buf->b_p_wm_nobin = p_wm_nobin;
11366 	    buf->b_p_bin = p_bin;
11367 	    buf->b_p_bomb = p_bomb;
11368 	    buf->b_p_fixeol = p_fixeol;
11369 	    buf->b_p_et = p_et;
11370 	    buf->b_p_et_nobin = p_et_nobin;
11371 	    buf->b_p_et_nopaste = p_et_nopaste;
11372 	    buf->b_p_ml = p_ml;
11373 	    buf->b_p_ml_nobin = p_ml_nobin;
11374 	    buf->b_p_inf = p_inf;
11375 	    buf->b_p_swf = cmdmod.noswapfile ? FALSE : p_swf;
11376 #ifdef FEAT_INS_EXPAND
11377 	    buf->b_p_cpt = vim_strsave(p_cpt);
11378 #endif
11379 #ifdef FEAT_COMPL_FUNC
11380 	    buf->b_p_cfu = vim_strsave(p_cfu);
11381 	    buf->b_p_ofu = vim_strsave(p_ofu);
11382 #endif
11383 	    buf->b_p_sts = p_sts;
11384 	    buf->b_p_sts_nopaste = p_sts_nopaste;
11385 #ifdef FEAT_VARTABS
11386 	    buf->b_p_vsts = vim_strsave(p_vsts);
11387 	    if (p_vsts && p_vsts != empty_option)
11388 		tabstop_set(p_vsts, &buf->b_p_vsts_array);
11389 	    else
11390 		buf->b_p_vsts_array = 0;
11391 	    buf->b_p_vsts_nopaste = p_vsts_nopaste
11392 				 ? vim_strsave(p_vsts_nopaste) : NULL;
11393 #endif
11394 	    buf->b_p_sn = p_sn;
11395 #ifdef FEAT_COMMENTS
11396 	    buf->b_p_com = vim_strsave(p_com);
11397 #endif
11398 #ifdef FEAT_FOLDING
11399 	    buf->b_p_cms = vim_strsave(p_cms);
11400 #endif
11401 	    buf->b_p_fo = vim_strsave(p_fo);
11402 	    buf->b_p_flp = vim_strsave(p_flp);
11403 	    buf->b_p_nf = vim_strsave(p_nf);
11404 	    buf->b_p_mps = vim_strsave(p_mps);
11405 #ifdef FEAT_SMARTINDENT
11406 	    buf->b_p_si = p_si;
11407 #endif
11408 	    buf->b_p_ci = p_ci;
11409 #ifdef FEAT_CINDENT
11410 	    buf->b_p_cin = p_cin;
11411 	    buf->b_p_cink = vim_strsave(p_cink);
11412 	    buf->b_p_cino = vim_strsave(p_cino);
11413 #endif
11414 	    /* Don't copy 'filetype', it must be detected */
11415 	    buf->b_p_ft = empty_option;
11416 	    buf->b_p_pi = p_pi;
11417 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
11418 	    buf->b_p_cinw = vim_strsave(p_cinw);
11419 #endif
11420 #ifdef FEAT_LISP
11421 	    buf->b_p_lisp = p_lisp;
11422 #endif
11423 #ifdef FEAT_SYN_HL
11424 	    /* Don't copy 'syntax', it must be set */
11425 	    buf->b_p_syn = empty_option;
11426 	    buf->b_p_smc = p_smc;
11427 	    buf->b_s.b_syn_isk = empty_option;
11428 #endif
11429 #ifdef FEAT_SPELL
11430 	    buf->b_s.b_p_spc = vim_strsave(p_spc);
11431 	    (void)compile_cap_prog(&buf->b_s);
11432 	    buf->b_s.b_p_spf = vim_strsave(p_spf);
11433 	    buf->b_s.b_p_spl = vim_strsave(p_spl);
11434 #endif
11435 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
11436 	    buf->b_p_inde = vim_strsave(p_inde);
11437 	    buf->b_p_indk = vim_strsave(p_indk);
11438 #endif
11439 	    buf->b_p_fp = empty_option;
11440 #if defined(FEAT_EVAL)
11441 	    buf->b_p_fex = vim_strsave(p_fex);
11442 #endif
11443 #ifdef FEAT_CRYPT
11444 	    buf->b_p_key = vim_strsave(p_key);
11445 #endif
11446 #ifdef FEAT_SEARCHPATH
11447 	    buf->b_p_sua = vim_strsave(p_sua);
11448 #endif
11449 #ifdef FEAT_KEYMAP
11450 	    buf->b_p_keymap = vim_strsave(p_keymap);
11451 	    buf->b_kmap_state |= KEYMAP_INIT;
11452 #endif
11453 #ifdef FEAT_TERMINAL
11454 	    buf->b_p_twsl = p_twsl;
11455 #endif
11456 	    /* This isn't really an option, but copying the langmap and IME
11457 	     * state from the current buffer is better than resetting it. */
11458 	    buf->b_p_iminsert = p_iminsert;
11459 	    buf->b_p_imsearch = p_imsearch;
11460 
11461 	    /* options that are normally global but also have a local value
11462 	     * are not copied, start using the global value */
11463 	    buf->b_p_ar = -1;
11464 	    buf->b_p_ul = NO_LOCAL_UNDOLEVEL;
11465 	    buf->b_p_bkc = empty_option;
11466 	    buf->b_bkc_flags = 0;
11467 #ifdef FEAT_QUICKFIX
11468 	    buf->b_p_gp = empty_option;
11469 	    buf->b_p_mp = empty_option;
11470 	    buf->b_p_efm = empty_option;
11471 #endif
11472 	    buf->b_p_ep = empty_option;
11473 	    buf->b_p_kp = empty_option;
11474 	    buf->b_p_path = empty_option;
11475 	    buf->b_p_tags = empty_option;
11476 	    buf->b_p_tc = empty_option;
11477 	    buf->b_tc_flags = 0;
11478 #ifdef FEAT_FIND_ID
11479 	    buf->b_p_def = empty_option;
11480 	    buf->b_p_inc = empty_option;
11481 # ifdef FEAT_EVAL
11482 	    buf->b_p_inex = vim_strsave(p_inex);
11483 # endif
11484 #endif
11485 #ifdef FEAT_INS_EXPAND
11486 	    buf->b_p_dict = empty_option;
11487 	    buf->b_p_tsr = empty_option;
11488 #endif
11489 #ifdef FEAT_TEXTOBJ
11490 	    buf->b_p_qe = vim_strsave(p_qe);
11491 #endif
11492 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
11493 	    buf->b_p_bexpr = empty_option;
11494 #endif
11495 #if defined(FEAT_CRYPT)
11496 	    buf->b_p_cm = empty_option;
11497 #endif
11498 #ifdef FEAT_PERSISTENT_UNDO
11499 	    buf->b_p_udf = p_udf;
11500 #endif
11501 #ifdef FEAT_LISP
11502 	    buf->b_p_lw = empty_option;
11503 #endif
11504 	    buf->b_p_menc = empty_option;
11505 
11506 	    /*
11507 	     * Don't copy the options set by ex_help(), use the saved values,
11508 	     * when going from a help buffer to a non-help buffer.
11509 	     * Don't touch these at all when BCO_NOHELP is used and going from
11510 	     * or to a help buffer.
11511 	     */
11512 	    if (dont_do_help)
11513 	    {
11514 		buf->b_p_isk = save_p_isk;
11515 #ifdef FEAT_VARTABS
11516 		if (p_vts && p_vts != empty_option && !buf->b_p_vts_array)
11517 		    tabstop_set(p_vts, &buf->b_p_vts_array);
11518 		else
11519 		    buf->b_p_vts_array = NULL;
11520 #endif
11521 	    }
11522 	    else
11523 	    {
11524 		buf->b_p_isk = vim_strsave(p_isk);
11525 		did_isk = TRUE;
11526 		buf->b_p_ts = p_ts;
11527 #ifdef FEAT_VARTABS
11528 		buf->b_p_vts = vim_strsave(p_vts);
11529 		if (p_vts && p_vts != empty_option && !buf->b_p_vts_array)
11530 		    tabstop_set(p_vts, &buf->b_p_vts_array);
11531 		else
11532 		    buf->b_p_vts_array = NULL;
11533 #endif
11534 		buf->b_help = FALSE;
11535 		if (buf->b_p_bt[0] == 'h')
11536 		    clear_string_option(&buf->b_p_bt);
11537 		buf->b_p_ma = p_ma;
11538 	    }
11539 	}
11540 
11541 	/*
11542 	 * When the options should be copied (ignoring BCO_ALWAYS), set the
11543 	 * flag that indicates that the options have been initialized.
11544 	 */
11545 	if (should_copy)
11546 	    buf->b_p_initialized = TRUE;
11547     }
11548 
11549     check_buf_options(buf);	    /* make sure we don't have NULLs */
11550     if (did_isk)
11551 	(void)buf_init_chartab(buf, FALSE);
11552 }
11553 
11554 /*
11555  * Reset the 'modifiable' option and its default value.
11556  */
11557     void
11558 reset_modifiable(void)
11559 {
11560     int		opt_idx;
11561 
11562     curbuf->b_p_ma = FALSE;
11563     p_ma = FALSE;
11564     opt_idx = findoption((char_u *)"ma");
11565     if (opt_idx >= 0)
11566 	options[opt_idx].def_val[VI_DEFAULT] = FALSE;
11567 }
11568 
11569 /*
11570  * Set the global value for 'iminsert' to the local value.
11571  */
11572     void
11573 set_iminsert_global(void)
11574 {
11575     p_iminsert = curbuf->b_p_iminsert;
11576 }
11577 
11578 /*
11579  * Set the global value for 'imsearch' to the local value.
11580  */
11581     void
11582 set_imsearch_global(void)
11583 {
11584     p_imsearch = curbuf->b_p_imsearch;
11585 }
11586 
11587 #if defined(FEAT_CMDL_COMPL) || defined(PROTO)
11588 static int expand_option_idx = -1;
11589 static char_u expand_option_name[5] = {'t', '_', NUL, NUL, NUL};
11590 static int expand_option_flags = 0;
11591 
11592     void
11593 set_context_in_set_cmd(
11594     expand_T	*xp,
11595     char_u	*arg,
11596     int		opt_flags)	/* OPT_GLOBAL and/or OPT_LOCAL */
11597 {
11598     int		nextchar;
11599     long_u	flags = 0;	/* init for GCC */
11600     int		opt_idx = 0;	/* init for GCC */
11601     char_u	*p;
11602     char_u	*s;
11603     int		is_term_option = FALSE;
11604     int		key;
11605 
11606     expand_option_flags = opt_flags;
11607 
11608     xp->xp_context = EXPAND_SETTINGS;
11609     if (*arg == NUL)
11610     {
11611 	xp->xp_pattern = arg;
11612 	return;
11613     }
11614     p = arg + STRLEN(arg) - 1;
11615     if (*p == ' ' && *(p - 1) != '\\')
11616     {
11617 	xp->xp_pattern = p + 1;
11618 	return;
11619     }
11620     while (p > arg)
11621     {
11622 	s = p;
11623 	/* count number of backslashes before ' ' or ',' */
11624 	if (*p == ' ' || *p == ',')
11625 	{
11626 	    while (s > arg && *(s - 1) == '\\')
11627 		--s;
11628 	}
11629 	/* break at a space with an even number of backslashes */
11630 	if (*p == ' ' && ((p - s) & 1) == 0)
11631 	{
11632 	    ++p;
11633 	    break;
11634 	}
11635 	--p;
11636     }
11637     if (STRNCMP(p, "no", 2) == 0 && STRNCMP(p, "novice", 6) != 0)
11638     {
11639 	xp->xp_context = EXPAND_BOOL_SETTINGS;
11640 	p += 2;
11641     }
11642     if (STRNCMP(p, "inv", 3) == 0)
11643     {
11644 	xp->xp_context = EXPAND_BOOL_SETTINGS;
11645 	p += 3;
11646     }
11647     xp->xp_pattern = arg = p;
11648     if (*arg == '<')
11649     {
11650 	while (*p != '>')
11651 	    if (*p++ == NUL)	    /* expand terminal option name */
11652 		return;
11653 	key = get_special_key_code(arg + 1);
11654 	if (key == 0)		    /* unknown name */
11655 	{
11656 	    xp->xp_context = EXPAND_NOTHING;
11657 	    return;
11658 	}
11659 	nextchar = *++p;
11660 	is_term_option = TRUE;
11661 	expand_option_name[2] = KEY2TERMCAP0(key);
11662 	expand_option_name[3] = KEY2TERMCAP1(key);
11663     }
11664     else
11665     {
11666 	if (p[0] == 't' && p[1] == '_')
11667 	{
11668 	    p += 2;
11669 	    if (*p != NUL)
11670 		++p;
11671 	    if (*p == NUL)
11672 		return;		/* expand option name */
11673 	    nextchar = *++p;
11674 	    is_term_option = TRUE;
11675 	    expand_option_name[2] = p[-2];
11676 	    expand_option_name[3] = p[-1];
11677 	}
11678 	else
11679 	{
11680 		/* Allow * wildcard */
11681 	    while (ASCII_ISALNUM(*p) || *p == '_' || *p == '*')
11682 		p++;
11683 	    if (*p == NUL)
11684 		return;
11685 	    nextchar = *p;
11686 	    *p = NUL;
11687 	    opt_idx = findoption(arg);
11688 	    *p = nextchar;
11689 	    if (opt_idx == -1 || options[opt_idx].var == NULL)
11690 	    {
11691 		xp->xp_context = EXPAND_NOTHING;
11692 		return;
11693 	    }
11694 	    flags = options[opt_idx].flags;
11695 	    if (flags & P_BOOL)
11696 	    {
11697 		xp->xp_context = EXPAND_NOTHING;
11698 		return;
11699 	    }
11700 	}
11701     }
11702     /* handle "-=" and "+=" */
11703     if ((nextchar == '-' || nextchar == '+' || nextchar == '^') && p[1] == '=')
11704     {
11705 	++p;
11706 	nextchar = '=';
11707     }
11708     if ((nextchar != '=' && nextchar != ':')
11709 				    || xp->xp_context == EXPAND_BOOL_SETTINGS)
11710     {
11711 	xp->xp_context = EXPAND_UNSUCCESSFUL;
11712 	return;
11713     }
11714     if (xp->xp_context != EXPAND_BOOL_SETTINGS && p[1] == NUL)
11715     {
11716 	xp->xp_context = EXPAND_OLD_SETTING;
11717 	if (is_term_option)
11718 	    expand_option_idx = -1;
11719 	else
11720 	    expand_option_idx = opt_idx;
11721 	xp->xp_pattern = p + 1;
11722 	return;
11723     }
11724     xp->xp_context = EXPAND_NOTHING;
11725     if (is_term_option || (flags & P_NUM))
11726 	return;
11727 
11728     xp->xp_pattern = p + 1;
11729 
11730     if (flags & P_EXPAND)
11731     {
11732 	p = options[opt_idx].var;
11733 	if (p == (char_u *)&p_bdir
11734 		|| p == (char_u *)&p_dir
11735 		|| p == (char_u *)&p_path
11736 		|| p == (char_u *)&p_pp
11737 		|| p == (char_u *)&p_rtp
11738 #ifdef FEAT_SEARCHPATH
11739 		|| p == (char_u *)&p_cdpath
11740 #endif
11741 #ifdef FEAT_SESSION
11742 		|| p == (char_u *)&p_vdir
11743 #endif
11744 		)
11745 	{
11746 	    xp->xp_context = EXPAND_DIRECTORIES;
11747 	    if (p == (char_u *)&p_path
11748 #ifdef FEAT_SEARCHPATH
11749 		    || p == (char_u *)&p_cdpath
11750 #endif
11751 		   )
11752 		xp->xp_backslash = XP_BS_THREE;
11753 	    else
11754 		xp->xp_backslash = XP_BS_ONE;
11755 	}
11756 	else
11757 	{
11758 	    xp->xp_context = EXPAND_FILES;
11759 	    /* for 'tags' need three backslashes for a space */
11760 	    if (p == (char_u *)&p_tags)
11761 		xp->xp_backslash = XP_BS_THREE;
11762 	    else
11763 		xp->xp_backslash = XP_BS_ONE;
11764 	}
11765     }
11766 
11767     /* For an option that is a list of file names, find the start of the
11768      * last file name. */
11769     for (p = arg + STRLEN(arg) - 1; p > xp->xp_pattern; --p)
11770     {
11771 	/* count number of backslashes before ' ' or ',' */
11772 	if (*p == ' ' || *p == ',')
11773 	{
11774 	    s = p;
11775 	    while (s > xp->xp_pattern && *(s - 1) == '\\')
11776 		--s;
11777 	    if ((*p == ' ' && (xp->xp_backslash == XP_BS_THREE && (p - s) < 3))
11778 		    || (*p == ',' && (flags & P_COMMA) && ((p - s) & 1) == 0))
11779 	    {
11780 		xp->xp_pattern = p + 1;
11781 		break;
11782 	    }
11783 	}
11784 
11785 #ifdef FEAT_SPELL
11786 	/* for 'spellsuggest' start at "file:" */
11787 	if (options[opt_idx].var == (char_u *)&p_sps
11788 					       && STRNCMP(p, "file:", 5) == 0)
11789 	{
11790 	    xp->xp_pattern = p + 5;
11791 	    break;
11792 	}
11793 #endif
11794     }
11795 
11796     return;
11797 }
11798 
11799     int
11800 ExpandSettings(
11801     expand_T	*xp,
11802     regmatch_T	*regmatch,
11803     int		*num_file,
11804     char_u	***file)
11805 {
11806     int		num_normal = 0;	    /* Nr of matching non-term-code settings */
11807     int		num_term = 0;	    /* Nr of matching terminal code settings */
11808     int		opt_idx;
11809     int		match;
11810     int		count = 0;
11811     char_u	*str;
11812     int		loop;
11813     int		is_term_opt;
11814     char_u	name_buf[MAX_KEY_NAME_LEN];
11815     static char *(names[]) = {"all", "termcap"};
11816     int		ic = regmatch->rm_ic;	/* remember the ignore-case flag */
11817 
11818     /* do this loop twice:
11819      * loop == 0: count the number of matching options
11820      * loop == 1: copy the matching options into allocated memory
11821      */
11822     for (loop = 0; loop <= 1; ++loop)
11823     {
11824 	regmatch->rm_ic = ic;
11825 	if (xp->xp_context != EXPAND_BOOL_SETTINGS)
11826 	{
11827 	    for (match = 0; match < (int)(sizeof(names) / sizeof(char *));
11828 								      ++match)
11829 		if (vim_regexec(regmatch, (char_u *)names[match], (colnr_T)0))
11830 		{
11831 		    if (loop == 0)
11832 			num_normal++;
11833 		    else
11834 			(*file)[count++] = vim_strsave((char_u *)names[match]);
11835 		}
11836 	}
11837 	for (opt_idx = 0; (str = (char_u *)options[opt_idx].fullname) != NULL;
11838 								    opt_idx++)
11839 	{
11840 	    if (options[opt_idx].var == NULL)
11841 		continue;
11842 	    if (xp->xp_context == EXPAND_BOOL_SETTINGS
11843 	      && !(options[opt_idx].flags & P_BOOL))
11844 		continue;
11845 	    is_term_opt = istermoption(&options[opt_idx]);
11846 	    if (is_term_opt && num_normal > 0)
11847 		continue;
11848 	    match = FALSE;
11849 	    if (vim_regexec(regmatch, str, (colnr_T)0)
11850 		    || (options[opt_idx].shortname != NULL
11851 			&& vim_regexec(regmatch,
11852 			   (char_u *)options[opt_idx].shortname, (colnr_T)0)))
11853 		match = TRUE;
11854 	    else if (is_term_opt)
11855 	    {
11856 		name_buf[0] = '<';
11857 		name_buf[1] = 't';
11858 		name_buf[2] = '_';
11859 		name_buf[3] = str[2];
11860 		name_buf[4] = str[3];
11861 		name_buf[5] = '>';
11862 		name_buf[6] = NUL;
11863 		if (vim_regexec(regmatch, name_buf, (colnr_T)0))
11864 		{
11865 		    match = TRUE;
11866 		    str = name_buf;
11867 		}
11868 	    }
11869 	    if (match)
11870 	    {
11871 		if (loop == 0)
11872 		{
11873 		    if (is_term_opt)
11874 			num_term++;
11875 		    else
11876 			num_normal++;
11877 		}
11878 		else
11879 		    (*file)[count++] = vim_strsave(str);
11880 	    }
11881 	}
11882 	/*
11883 	 * Check terminal key codes, these are not in the option table
11884 	 */
11885 	if (xp->xp_context != EXPAND_BOOL_SETTINGS  && num_normal == 0)
11886 	{
11887 	    for (opt_idx = 0; (str = get_termcode(opt_idx)) != NULL; opt_idx++)
11888 	    {
11889 		if (!isprint(str[0]) || !isprint(str[1]))
11890 		    continue;
11891 
11892 		name_buf[0] = 't';
11893 		name_buf[1] = '_';
11894 		name_buf[2] = str[0];
11895 		name_buf[3] = str[1];
11896 		name_buf[4] = NUL;
11897 
11898 		match = FALSE;
11899 		if (vim_regexec(regmatch, name_buf, (colnr_T)0))
11900 		    match = TRUE;
11901 		else
11902 		{
11903 		    name_buf[0] = '<';
11904 		    name_buf[1] = 't';
11905 		    name_buf[2] = '_';
11906 		    name_buf[3] = str[0];
11907 		    name_buf[4] = str[1];
11908 		    name_buf[5] = '>';
11909 		    name_buf[6] = NUL;
11910 
11911 		    if (vim_regexec(regmatch, name_buf, (colnr_T)0))
11912 			match = TRUE;
11913 		}
11914 		if (match)
11915 		{
11916 		    if (loop == 0)
11917 			num_term++;
11918 		    else
11919 			(*file)[count++] = vim_strsave(name_buf);
11920 		}
11921 	    }
11922 
11923 	    /*
11924 	     * Check special key names.
11925 	     */
11926 	    regmatch->rm_ic = TRUE;		/* ignore case here */
11927 	    for (opt_idx = 0; (str = get_key_name(opt_idx)) != NULL; opt_idx++)
11928 	    {
11929 		name_buf[0] = '<';
11930 		STRCPY(name_buf + 1, str);
11931 		STRCAT(name_buf, ">");
11932 
11933 		if (vim_regexec(regmatch, name_buf, (colnr_T)0))
11934 		{
11935 		    if (loop == 0)
11936 			num_term++;
11937 		    else
11938 			(*file)[count++] = vim_strsave(name_buf);
11939 		}
11940 	    }
11941 	}
11942 	if (loop == 0)
11943 	{
11944 	    if (num_normal > 0)
11945 		*num_file = num_normal;
11946 	    else if (num_term > 0)
11947 		*num_file = num_term;
11948 	    else
11949 		return OK;
11950 	    *file = (char_u **)alloc((unsigned)(*num_file * sizeof(char_u *)));
11951 	    if (*file == NULL)
11952 	    {
11953 		*file = (char_u **)"";
11954 		return FAIL;
11955 	    }
11956 	}
11957     }
11958     return OK;
11959 }
11960 
11961     int
11962 ExpandOldSetting(int *num_file, char_u ***file)
11963 {
11964     char_u  *var = NULL;	/* init for GCC */
11965     char_u  *buf;
11966 
11967     *num_file = 0;
11968     *file = (char_u **)alloc((unsigned)sizeof(char_u *));
11969     if (*file == NULL)
11970 	return FAIL;
11971 
11972     /*
11973      * For a terminal key code expand_option_idx is < 0.
11974      */
11975     if (expand_option_idx < 0)
11976     {
11977 	var = find_termcode(expand_option_name + 2);
11978 	if (var == NULL)
11979 	    expand_option_idx = findoption(expand_option_name);
11980     }
11981 
11982     if (expand_option_idx >= 0)
11983     {
11984 	/* put string of option value in NameBuff */
11985 	option_value2string(&options[expand_option_idx], expand_option_flags);
11986 	var = NameBuff;
11987     }
11988     else if (var == NULL)
11989 	var = (char_u *)"";
11990 
11991     /* A backslash is required before some characters.  This is the reverse of
11992      * what happens in do_set(). */
11993     buf = vim_strsave_escaped(var, escape_chars);
11994 
11995     if (buf == NULL)
11996     {
11997 	VIM_CLEAR(*file);
11998 	return FAIL;
11999     }
12000 
12001 #ifdef BACKSLASH_IN_FILENAME
12002     /* For MS-Windows et al. we don't double backslashes at the start and
12003      * before a file name character. */
12004     for (var = buf; *var != NUL; MB_PTR_ADV(var))
12005 	if (var[0] == '\\' && var[1] == '\\'
12006 		&& expand_option_idx >= 0
12007 		&& (options[expand_option_idx].flags & P_EXPAND)
12008 		&& vim_isfilec(var[2])
12009 		&& (var[2] != '\\' || (var == buf && var[4] != '\\')))
12010 	    STRMOVE(var, var + 1);
12011 #endif
12012 
12013     *file[0] = buf;
12014     *num_file = 1;
12015     return OK;
12016 }
12017 #endif
12018 
12019 /*
12020  * Get the value for the numeric or string option *opp in a nice format into
12021  * NameBuff[].  Must not be called with a hidden option!
12022  */
12023     static void
12024 option_value2string(
12025     struct vimoption	*opp,
12026     int			opt_flags)	/* OPT_GLOBAL and/or OPT_LOCAL */
12027 {
12028     char_u	*varp;
12029 
12030     varp = get_varp_scope(opp, opt_flags);
12031 
12032     if (opp->flags & P_NUM)
12033     {
12034 	long wc = 0;
12035 
12036 	if (wc_use_keyname(varp, &wc))
12037 	    STRCPY(NameBuff, get_special_key_name((int)wc, 0));
12038 	else if (wc != 0)
12039 	    STRCPY(NameBuff, transchar((int)wc));
12040 	else
12041 	    sprintf((char *)NameBuff, "%ld", *(long *)varp);
12042     }
12043     else    /* P_STRING */
12044     {
12045 	varp = *(char_u **)(varp);
12046 	if (varp == NULL)		    /* just in case */
12047 	    NameBuff[0] = NUL;
12048 #ifdef FEAT_CRYPT
12049 	/* don't show the actual value of 'key', only that it's set */
12050 	else if (opp->var == (char_u *)&p_key && *varp)
12051 	    STRCPY(NameBuff, "*****");
12052 #endif
12053 	else if (opp->flags & P_EXPAND)
12054 	    home_replace(NULL, varp, NameBuff, MAXPATHL, FALSE);
12055 	/* Translate 'pastetoggle' into special key names */
12056 	else if ((char_u **)opp->var == &p_pt)
12057 	    str2specialbuf(p_pt, NameBuff, MAXPATHL);
12058 	else
12059 	    vim_strncpy(NameBuff, varp, MAXPATHL - 1);
12060     }
12061 }
12062 
12063 /*
12064  * Return TRUE if "varp" points to 'wildchar' or 'wildcharm' and it can be
12065  * printed as a keyname.
12066  * "*wcp" is set to the value of the option if it's 'wildchar' or 'wildcharm'.
12067  */
12068     static int
12069 wc_use_keyname(char_u *varp, long *wcp)
12070 {
12071     if (((long *)varp == &p_wc) || ((long *)varp == &p_wcm))
12072     {
12073 	*wcp = *(long *)varp;
12074 	if (IS_SPECIAL(*wcp) || find_special_key_in_table((int)*wcp) >= 0)
12075 	    return TRUE;
12076     }
12077     return FALSE;
12078 }
12079 
12080 #if defined(FEAT_LANGMAP) || defined(PROTO)
12081 /*
12082  * Any character has an equivalent 'langmap' character.  This is used for
12083  * keyboards that have a special language mode that sends characters above
12084  * 128 (although other characters can be translated too).  The "to" field is a
12085  * Vim command character.  This avoids having to switch the keyboard back to
12086  * ASCII mode when leaving Insert mode.
12087  *
12088  * langmap_mapchar[] maps any of 256 chars to an ASCII char used for Vim
12089  * commands.
12090  * langmap_mapga.ga_data is a sorted table of langmap_entry_T.  This does the
12091  * same as langmap_mapchar[] for characters >= 256.
12092  *
12093  * Use growarray for 'langmap' chars >= 256
12094  */
12095 typedef struct
12096 {
12097     int	    from;
12098     int     to;
12099 } langmap_entry_T;
12100 
12101 static garray_T langmap_mapga;
12102 
12103 /*
12104  * Search for an entry in "langmap_mapga" for "from".  If found set the "to"
12105  * field.  If not found insert a new entry at the appropriate location.
12106  */
12107     static void
12108 langmap_set_entry(int from, int to)
12109 {
12110     langmap_entry_T *entries = (langmap_entry_T *)(langmap_mapga.ga_data);
12111     int		    a = 0;
12112     int		    b = langmap_mapga.ga_len;
12113 
12114     /* Do a binary search for an existing entry. */
12115     while (a != b)
12116     {
12117 	int i = (a + b) / 2;
12118 	int d = entries[i].from - from;
12119 
12120 	if (d == 0)
12121 	{
12122 	    entries[i].to = to;
12123 	    return;
12124 	}
12125 	if (d < 0)
12126 	    a = i + 1;
12127 	else
12128 	    b = i;
12129     }
12130 
12131     if (ga_grow(&langmap_mapga, 1) != OK)
12132 	return;  /* out of memory */
12133 
12134     /* insert new entry at position "a" */
12135     entries = (langmap_entry_T *)(langmap_mapga.ga_data) + a;
12136     mch_memmove(entries + 1, entries,
12137 			(langmap_mapga.ga_len - a) * sizeof(langmap_entry_T));
12138     ++langmap_mapga.ga_len;
12139     entries[0].from = from;
12140     entries[0].to = to;
12141 }
12142 
12143 /*
12144  * Apply 'langmap' to multi-byte character "c" and return the result.
12145  */
12146     int
12147 langmap_adjust_mb(int c)
12148 {
12149     langmap_entry_T *entries = (langmap_entry_T *)(langmap_mapga.ga_data);
12150     int a = 0;
12151     int b = langmap_mapga.ga_len;
12152 
12153     while (a != b)
12154     {
12155 	int i = (a + b) / 2;
12156 	int d = entries[i].from - c;
12157 
12158 	if (d == 0)
12159 	    return entries[i].to;  /* found matching entry */
12160 	if (d < 0)
12161 	    a = i + 1;
12162 	else
12163 	    b = i;
12164     }
12165     return c;  /* no entry found, return "c" unmodified */
12166 }
12167 
12168     static void
12169 langmap_init(void)
12170 {
12171     int i;
12172 
12173     for (i = 0; i < 256; i++)
12174 	langmap_mapchar[i] = i;	 /* we init with a one-to-one map */
12175     ga_init2(&langmap_mapga, sizeof(langmap_entry_T), 8);
12176 }
12177 
12178 /*
12179  * Called when langmap option is set; the language map can be
12180  * changed at any time!
12181  */
12182     static void
12183 langmap_set(void)
12184 {
12185     char_u  *p;
12186     char_u  *p2;
12187     int	    from, to;
12188 
12189     ga_clear(&langmap_mapga);		    /* clear the previous map first */
12190     langmap_init();			    /* back to one-to-one map */
12191 
12192     for (p = p_langmap; p[0] != NUL; )
12193     {
12194 	for (p2 = p; p2[0] != NUL && p2[0] != ',' && p2[0] != ';';
12195 							       MB_PTR_ADV(p2))
12196 	{
12197 	    if (p2[0] == '\\' && p2[1] != NUL)
12198 		++p2;
12199 	}
12200 	if (p2[0] == ';')
12201 	    ++p2;	    /* abcd;ABCD form, p2 points to A */
12202 	else
12203 	    p2 = NULL;	    /* aAbBcCdD form, p2 is NULL */
12204 	while (p[0])
12205 	{
12206 	    if (p[0] == ',')
12207 	    {
12208 		++p;
12209 		break;
12210 	    }
12211 	    if (p[0] == '\\' && p[1] != NUL)
12212 		++p;
12213 	    from = (*mb_ptr2char)(p);
12214 	    to = NUL;
12215 	    if (p2 == NULL)
12216 	    {
12217 		MB_PTR_ADV(p);
12218 		if (p[0] != ',')
12219 		{
12220 		    if (p[0] == '\\')
12221 			++p;
12222 		    to = (*mb_ptr2char)(p);
12223 		}
12224 	    }
12225 	    else
12226 	    {
12227 		if (p2[0] != ',')
12228 		{
12229 		    if (p2[0] == '\\')
12230 			++p2;
12231 		    to = (*mb_ptr2char)(p2);
12232 		}
12233 	    }
12234 	    if (to == NUL)
12235 	    {
12236 		semsg(_("E357: 'langmap': Matching character missing for %s"),
12237 							     transchar(from));
12238 		return;
12239 	    }
12240 
12241 	    if (from >= 256)
12242 		langmap_set_entry(from, to);
12243 	    else
12244 		langmap_mapchar[from & 255] = to;
12245 
12246 	    /* Advance to next pair */
12247 	    MB_PTR_ADV(p);
12248 	    if (p2 != NULL)
12249 	    {
12250 		MB_PTR_ADV(p2);
12251 		if (*p == ';')
12252 		{
12253 		    p = p2;
12254 		    if (p[0] != NUL)
12255 		    {
12256 			if (p[0] != ',')
12257 			{
12258 			    semsg(_("E358: 'langmap': Extra characters after semicolon: %s"), p);
12259 			    return;
12260 			}
12261 			++p;
12262 		    }
12263 		    break;
12264 		}
12265 	    }
12266 	}
12267     }
12268 }
12269 #endif
12270 
12271 /*
12272  * Return TRUE if format option 'x' is in effect.
12273  * Take care of no formatting when 'paste' is set.
12274  */
12275     int
12276 has_format_option(int x)
12277 {
12278     if (p_paste)
12279 	return FALSE;
12280     return (vim_strchr(curbuf->b_p_fo, x) != NULL);
12281 }
12282 
12283 /*
12284  * Return TRUE if "x" is present in 'shortmess' option, or
12285  * 'shortmess' contains 'a' and "x" is present in SHM_A.
12286  */
12287     int
12288 shortmess(int x)
12289 {
12290     return p_shm != NULL &&
12291 	    (   vim_strchr(p_shm, x) != NULL
12292 	    || (vim_strchr(p_shm, 'a') != NULL
12293 		&& vim_strchr((char_u *)SHM_A, x) != NULL));
12294 }
12295 
12296 /*
12297  * paste_option_changed() - Called after p_paste was set or reset.
12298  */
12299     static void
12300 paste_option_changed(void)
12301 {
12302     static int	old_p_paste = FALSE;
12303     static int	save_sm = 0;
12304     static int	save_sta = 0;
12305 #ifdef FEAT_CMDL_INFO
12306     static int	save_ru = 0;
12307 #endif
12308 #ifdef FEAT_RIGHTLEFT
12309     static int	save_ri = 0;
12310     static int	save_hkmap = 0;
12311 #endif
12312     buf_T	*buf;
12313 
12314     if (p_paste)
12315     {
12316 	/*
12317 	 * Paste switched from off to on.
12318 	 * Save the current values, so they can be restored later.
12319 	 */
12320 	if (!old_p_paste)
12321 	{
12322 	    /* save options for each buffer */
12323 	    FOR_ALL_BUFFERS(buf)
12324 	    {
12325 		buf->b_p_tw_nopaste = buf->b_p_tw;
12326 		buf->b_p_wm_nopaste = buf->b_p_wm;
12327 		buf->b_p_sts_nopaste = buf->b_p_sts;
12328 		buf->b_p_ai_nopaste = buf->b_p_ai;
12329 		buf->b_p_et_nopaste = buf->b_p_et;
12330 #ifdef FEAT_VARTABS
12331 		if (buf->b_p_vsts_nopaste)
12332 		    vim_free(buf->b_p_vsts_nopaste);
12333 		buf->b_p_vsts_nopaste = buf->b_p_vsts && buf->b_p_vsts != empty_option
12334 				     ? vim_strsave(buf->b_p_vsts) : NULL;
12335 #endif
12336 	    }
12337 
12338 	    /* save global options */
12339 	    save_sm = p_sm;
12340 	    save_sta = p_sta;
12341 #ifdef FEAT_CMDL_INFO
12342 	    save_ru = p_ru;
12343 #endif
12344 #ifdef FEAT_RIGHTLEFT
12345 	    save_ri = p_ri;
12346 	    save_hkmap = p_hkmap;
12347 #endif
12348 	    /* save global values for local buffer options */
12349 	    p_ai_nopaste = p_ai;
12350 	    p_et_nopaste = p_et;
12351 	    p_sts_nopaste = p_sts;
12352 	    p_tw_nopaste = p_tw;
12353 	    p_wm_nopaste = p_wm;
12354 #ifdef FEAT_VARTABS
12355 	    if (p_vsts_nopaste)
12356 		vim_free(p_vsts_nopaste);
12357 	    p_vsts_nopaste = p_vsts && p_vsts != empty_option ? vim_strsave(p_vsts) : NULL;
12358 #endif
12359 	}
12360 
12361 	/*
12362 	 * Always set the option values, also when 'paste' is set when it is
12363 	 * already on.
12364 	 */
12365 	/* set options for each buffer */
12366 	FOR_ALL_BUFFERS(buf)
12367 	{
12368 	    buf->b_p_tw = 0;	    /* textwidth is 0 */
12369 	    buf->b_p_wm = 0;	    /* wrapmargin is 0 */
12370 	    buf->b_p_sts = 0;	    /* softtabstop is 0 */
12371 	    buf->b_p_ai = 0;	    /* no auto-indent */
12372 	    buf->b_p_et = 0;	    /* no expandtab */
12373 #ifdef FEAT_VARTABS
12374 	    if (buf->b_p_vsts)
12375 		free_string_option(buf->b_p_vsts);
12376 	    buf->b_p_vsts = empty_option;
12377 	    if (buf->b_p_vsts_array)
12378 		vim_free(buf->b_p_vsts_array);
12379 	    buf->b_p_vsts_array = 0;
12380 #endif
12381 	}
12382 
12383 	/* set global options */
12384 	p_sm = 0;		    /* no showmatch */
12385 	p_sta = 0;		    /* no smarttab */
12386 #ifdef FEAT_CMDL_INFO
12387 	if (p_ru)
12388 	    status_redraw_all();    /* redraw to remove the ruler */
12389 	p_ru = 0;		    /* no ruler */
12390 #endif
12391 #ifdef FEAT_RIGHTLEFT
12392 	p_ri = 0;		    /* no reverse insert */
12393 	p_hkmap = 0;		    /* no Hebrew keyboard */
12394 #endif
12395 	/* set global values for local buffer options */
12396 	p_tw = 0;
12397 	p_wm = 0;
12398 	p_sts = 0;
12399 	p_ai = 0;
12400 #ifdef FEAT_VARTABS
12401 	if (p_vsts)
12402 	    free_string_option(p_vsts);
12403 	p_vsts = empty_option;
12404 #endif
12405     }
12406 
12407     /*
12408      * Paste switched from on to off: Restore saved values.
12409      */
12410     else if (old_p_paste)
12411     {
12412 	/* restore options for each buffer */
12413 	FOR_ALL_BUFFERS(buf)
12414 	{
12415 	    buf->b_p_tw = buf->b_p_tw_nopaste;
12416 	    buf->b_p_wm = buf->b_p_wm_nopaste;
12417 	    buf->b_p_sts = buf->b_p_sts_nopaste;
12418 	    buf->b_p_ai = buf->b_p_ai_nopaste;
12419 	    buf->b_p_et = buf->b_p_et_nopaste;
12420 #ifdef FEAT_VARTABS
12421 	    if (buf->b_p_vsts)
12422 		free_string_option(buf->b_p_vsts);
12423 	    buf->b_p_vsts = buf->b_p_vsts_nopaste
12424 			 ? vim_strsave(buf->b_p_vsts_nopaste) : empty_option;
12425 	    if (buf->b_p_vsts_array)
12426 		vim_free(buf->b_p_vsts_array);
12427 	    if (buf->b_p_vsts && buf->b_p_vsts != empty_option)
12428 		tabstop_set(buf->b_p_vsts, &buf->b_p_vsts_array);
12429 	    else
12430 		buf->b_p_vsts_array = 0;
12431 #endif
12432 	}
12433 
12434 	/* restore global options */
12435 	p_sm = save_sm;
12436 	p_sta = save_sta;
12437 #ifdef FEAT_CMDL_INFO
12438 	if (p_ru != save_ru)
12439 	    status_redraw_all();    /* redraw to draw the ruler */
12440 	p_ru = save_ru;
12441 #endif
12442 #ifdef FEAT_RIGHTLEFT
12443 	p_ri = save_ri;
12444 	p_hkmap = save_hkmap;
12445 #endif
12446 	/* set global values for local buffer options */
12447 	p_ai = p_ai_nopaste;
12448 	p_et = p_et_nopaste;
12449 	p_sts = p_sts_nopaste;
12450 	p_tw = p_tw_nopaste;
12451 	p_wm = p_wm_nopaste;
12452 #ifdef FEAT_VARTABS
12453 	if (p_vsts)
12454 	    free_string_option(p_vsts);
12455 	p_vsts = p_vsts_nopaste ? vim_strsave(p_vsts_nopaste) : empty_option;
12456 #endif
12457     }
12458 
12459     old_p_paste = p_paste;
12460 }
12461 
12462 /*
12463  * vimrc_found() - Called when a ".vimrc" or "VIMINIT" has been found.
12464  *
12465  * Reset 'compatible' and set the values for options that didn't get set yet
12466  * to the Vim defaults.
12467  * Don't do this if the 'compatible' option has been set or reset before.
12468  * When "fname" is not NULL, use it to set $"envname" when it wasn't set yet.
12469  */
12470     void
12471 vimrc_found(char_u *fname, char_u *envname)
12472 {
12473     int		opt_idx;
12474     int		dofree = FALSE;
12475     char_u	*p;
12476 
12477     if (!option_was_set((char_u *)"cp"))
12478     {
12479 	p_cp = FALSE;
12480 	for (opt_idx = 0; !istermoption(&options[opt_idx]); opt_idx++)
12481 	    if (!(options[opt_idx].flags & (P_WAS_SET|P_VI_DEF)))
12482 		set_option_default(opt_idx, OPT_FREE, FALSE);
12483 	didset_options();
12484 	didset_options2();
12485     }
12486 
12487     if (fname != NULL)
12488     {
12489 	p = vim_getenv(envname, &dofree);
12490 	if (p == NULL)
12491 	{
12492 	    /* Set $MYVIMRC to the first vimrc file found. */
12493 	    p = FullName_save(fname, FALSE);
12494 	    if (p != NULL)
12495 	    {
12496 		vim_setenv(envname, p);
12497 		vim_free(p);
12498 	    }
12499 	}
12500 	else if (dofree)
12501 	    vim_free(p);
12502     }
12503 }
12504 
12505 /*
12506  * Set 'compatible' on or off.  Called for "-C" and "-N" command line arg.
12507  */
12508     void
12509 change_compatible(int on)
12510 {
12511     int	    opt_idx;
12512 
12513     if (p_cp != on)
12514     {
12515 	p_cp = on;
12516 	compatible_set();
12517     }
12518     opt_idx = findoption((char_u *)"cp");
12519     if (opt_idx >= 0)
12520 	options[opt_idx].flags |= P_WAS_SET;
12521 }
12522 
12523 /*
12524  * Return TRUE when option "name" has been set.
12525  * Only works correctly for global options.
12526  */
12527     int
12528 option_was_set(char_u *name)
12529 {
12530     int idx;
12531 
12532     idx = findoption(name);
12533     if (idx < 0)	/* unknown option */
12534 	return FALSE;
12535     if (options[idx].flags & P_WAS_SET)
12536 	return TRUE;
12537     return FALSE;
12538 }
12539 
12540 /*
12541  * Reset the flag indicating option "name" was set.
12542  */
12543     int
12544 reset_option_was_set(char_u *name)
12545 {
12546     int idx = findoption(name);
12547 
12548     if (idx >= 0)
12549     {
12550 	options[idx].flags &= ~P_WAS_SET;
12551 	return OK;
12552     }
12553     return FAIL;
12554 }
12555 
12556 /*
12557  * compatible_set() - Called when 'compatible' has been set or unset.
12558  *
12559  * When 'compatible' set: Set all relevant options (those that have the P_VIM)
12560  * flag) to a Vi compatible value.
12561  * When 'compatible' is unset: Set all options that have a different default
12562  * for Vim (without the P_VI_DEF flag) to that default.
12563  */
12564     static void
12565 compatible_set(void)
12566 {
12567     int	    opt_idx;
12568 
12569     for (opt_idx = 0; !istermoption(&options[opt_idx]); opt_idx++)
12570 	if (	   ((options[opt_idx].flags & P_VIM) && p_cp)
12571 		|| (!(options[opt_idx].flags & P_VI_DEF) && !p_cp))
12572 	    set_option_default(opt_idx, OPT_FREE, p_cp);
12573     didset_options();
12574     didset_options2();
12575 }
12576 
12577 #ifdef FEAT_LINEBREAK
12578 
12579 # if defined(__BORLANDC__) && (__BORLANDC__ < 0x500)
12580    /* Borland C++ screws up loop optimisation here (negri) */
12581   #pragma option -O-l
12582 # endif
12583 
12584 /*
12585  * fill_breakat_flags() -- called when 'breakat' changes value.
12586  */
12587     static void
12588 fill_breakat_flags(void)
12589 {
12590     char_u	*p;
12591     int		i;
12592 
12593     for (i = 0; i < 256; i++)
12594 	breakat_flags[i] = FALSE;
12595 
12596     if (p_breakat != NULL)
12597 	for (p = p_breakat; *p; p++)
12598 	    breakat_flags[*p] = TRUE;
12599 }
12600 
12601 # if defined(__BORLANDC__) && (__BORLANDC__ < 0x500)
12602   #pragma option -O.l
12603 # endif
12604 
12605 #endif
12606 
12607 /*
12608  * Check an option that can be a range of string values.
12609  *
12610  * Return OK for correct value, FAIL otherwise.
12611  * Empty is always OK.
12612  */
12613     static int
12614 check_opt_strings(
12615     char_u	*val,
12616     char	**values,
12617     int		list)	    /* when TRUE: accept a list of values */
12618 {
12619     return opt_strings_flags(val, values, NULL, list);
12620 }
12621 
12622 /*
12623  * Handle an option that can be a range of string values.
12624  * Set a flag in "*flagp" for each string present.
12625  *
12626  * Return OK for correct value, FAIL otherwise.
12627  * Empty is always OK.
12628  */
12629     static int
12630 opt_strings_flags(
12631     char_u	*val,		/* new value */
12632     char	**values,	/* array of valid string values */
12633     unsigned	*flagp,
12634     int		list)		/* when TRUE: accept a list of values */
12635 {
12636     int		i;
12637     int		len;
12638     unsigned	new_flags = 0;
12639 
12640     while (*val)
12641     {
12642 	for (i = 0; ; ++i)
12643 	{
12644 	    if (values[i] == NULL)	/* val not found in values[] */
12645 		return FAIL;
12646 
12647 	    len = (int)STRLEN(values[i]);
12648 	    if (STRNCMP(values[i], val, len) == 0
12649 		    && ((list && val[len] == ',') || val[len] == NUL))
12650 	    {
12651 		val += len + (val[len] == ',');
12652 		new_flags |= (1 << i);
12653 		break;		/* check next item in val list */
12654 	    }
12655 	}
12656     }
12657     if (flagp != NULL)
12658 	*flagp = new_flags;
12659 
12660     return OK;
12661 }
12662 
12663 /*
12664  * Read the 'wildmode' option, fill wim_flags[].
12665  */
12666     static int
12667 check_opt_wim(void)
12668 {
12669     char_u	new_wim_flags[4];
12670     char_u	*p;
12671     int		i;
12672     int		idx = 0;
12673 
12674     for (i = 0; i < 4; ++i)
12675 	new_wim_flags[i] = 0;
12676 
12677     for (p = p_wim; *p; ++p)
12678     {
12679 	for (i = 0; ASCII_ISALPHA(p[i]); ++i)
12680 	    ;
12681 	if (p[i] != NUL && p[i] != ',' && p[i] != ':')
12682 	    return FAIL;
12683 	if (i == 7 && STRNCMP(p, "longest", 7) == 0)
12684 	    new_wim_flags[idx] |= WIM_LONGEST;
12685 	else if (i == 4 && STRNCMP(p, "full", 4) == 0)
12686 	    new_wim_flags[idx] |= WIM_FULL;
12687 	else if (i == 4 && STRNCMP(p, "list", 4) == 0)
12688 	    new_wim_flags[idx] |= WIM_LIST;
12689 	else
12690 	    return FAIL;
12691 	p += i;
12692 	if (*p == NUL)
12693 	    break;
12694 	if (*p == ',')
12695 	{
12696 	    if (idx == 3)
12697 		return FAIL;
12698 	    ++idx;
12699 	}
12700     }
12701 
12702     /* fill remaining entries with last flag */
12703     while (idx < 3)
12704     {
12705 	new_wim_flags[idx + 1] = new_wim_flags[idx];
12706 	++idx;
12707     }
12708 
12709     /* only when there are no errors, wim_flags[] is changed */
12710     for (i = 0; i < 4; ++i)
12711 	wim_flags[i] = new_wim_flags[i];
12712     return OK;
12713 }
12714 
12715 /*
12716  * Check if backspacing over something is allowed.
12717  */
12718     int
12719 can_bs(
12720     int		what)	    /* BS_INDENT, BS_EOL or BS_START */
12721 {
12722 #ifdef FEAT_JOB_CHANNEL
12723     if (what == BS_START && bt_prompt(curbuf))
12724 	return FALSE;
12725 #endif
12726     switch (*p_bs)
12727     {
12728 	case '2':	return TRUE;
12729 	case '1':	return (what != BS_START);
12730 	case '0':	return FALSE;
12731     }
12732     return vim_strchr(p_bs, what) != NULL;
12733 }
12734 
12735 /*
12736  * Save the current values of 'fileformat' and 'fileencoding', so that we know
12737  * the file must be considered changed when the value is different.
12738  */
12739     void
12740 save_file_ff(buf_T *buf)
12741 {
12742     buf->b_start_ffc = *buf->b_p_ff;
12743     buf->b_start_eol = buf->b_p_eol;
12744     buf->b_start_bomb = buf->b_p_bomb;
12745 
12746     /* Only use free/alloc when necessary, they take time. */
12747     if (buf->b_start_fenc == NULL
12748 			     || STRCMP(buf->b_start_fenc, buf->b_p_fenc) != 0)
12749     {
12750 	vim_free(buf->b_start_fenc);
12751 	buf->b_start_fenc = vim_strsave(buf->b_p_fenc);
12752     }
12753 }
12754 
12755 /*
12756  * Return TRUE if 'fileformat' and/or 'fileencoding' has a different value
12757  * from when editing started (save_file_ff() called).
12758  * Also when 'endofline' was changed and 'binary' is set, or when 'bomb' was
12759  * changed and 'binary' is not set.
12760  * Also when 'endofline' was changed and 'fixeol' is not set.
12761  * When "ignore_empty" is true don't consider a new, empty buffer to be
12762  * changed.
12763  */
12764     int
12765 file_ff_differs(buf_T *buf, int ignore_empty)
12766 {
12767     /* In a buffer that was never loaded the options are not valid. */
12768     if (buf->b_flags & BF_NEVERLOADED)
12769 	return FALSE;
12770     if (ignore_empty
12771 	    && (buf->b_flags & BF_NEW)
12772 	    && buf->b_ml.ml_line_count == 1
12773 	    && *ml_get_buf(buf, (linenr_T)1, FALSE) == NUL)
12774 	return FALSE;
12775     if (buf->b_start_ffc != *buf->b_p_ff)
12776 	return TRUE;
12777     if ((buf->b_p_bin || !buf->b_p_fixeol) && buf->b_start_eol != buf->b_p_eol)
12778 	return TRUE;
12779     if (!buf->b_p_bin && buf->b_start_bomb != buf->b_p_bomb)
12780 	return TRUE;
12781     if (buf->b_start_fenc == NULL)
12782 	return (*buf->b_p_fenc != NUL);
12783     return (STRCMP(buf->b_start_fenc, buf->b_p_fenc) != 0);
12784 }
12785 
12786 /*
12787  * return OK if "p" is a valid fileformat name, FAIL otherwise.
12788  */
12789     int
12790 check_ff_value(char_u *p)
12791 {
12792     return check_opt_strings(p, p_ff_values, FALSE);
12793 }
12794 
12795 #ifdef FEAT_VARTABS
12796 
12797 /*
12798  * Set the integer values corresponding to the string setting of 'vartabstop'.
12799  */
12800     int
12801 tabstop_set(char_u *var, int **array)
12802 {
12803     int valcount = 1;
12804     int t;
12805     char_u *cp;
12806 
12807     if (var[0] == NUL || (var[0] == '0' && var[1] == NUL))
12808     {
12809 	*array = NULL;
12810 	return TRUE;
12811     }
12812 
12813     for (cp = var; *cp != NUL; ++cp)
12814     {
12815 	if (cp == var || cp[-1] == ',')
12816 	{
12817 	    char_u *end;
12818 
12819 	    if (strtol((char *)cp, (char **)&end, 10) <= 0)
12820 	    {
12821 		if (cp != end)
12822 		    emsg(_(e_positive));
12823 		else
12824 		    emsg(_(e_invarg));
12825 		return FALSE;
12826 	    }
12827 	}
12828 
12829 	if (VIM_ISDIGIT(*cp))
12830 	    continue;
12831 	if (cp[0] == ',' && cp > var && cp[-1] != ',' && cp[1] != NUL)
12832 	{
12833 	    ++valcount;
12834 	    continue;
12835 	}
12836 	emsg(_(e_invarg));
12837 	return FALSE;
12838     }
12839 
12840     *array = (int *)alloc((unsigned) ((valcount + 1) * sizeof(int)));
12841     (*array)[0] = valcount;
12842 
12843     t = 1;
12844     for (cp = var; *cp != NUL;)
12845     {
12846 	(*array)[t++] = atoi((char *)cp);
12847 	while (*cp  != NUL && *cp != ',')
12848 	    ++cp;
12849 	if (*cp != NUL)
12850 	    ++cp;
12851     }
12852 
12853     return TRUE;
12854 }
12855 
12856 /*
12857  * Calculate the number of screen spaces a tab will occupy.
12858  * If "vts" is set then the tab widths are taken from that array,
12859  * otherwise the value of ts is used.
12860  */
12861     int
12862 tabstop_padding(colnr_T col, int ts_arg, int *vts)
12863 {
12864     int		ts = ts_arg == 0 ? 8 : ts_arg;
12865     int		tabcount;
12866     colnr_T	tabcol = 0;
12867     int		t;
12868     int		padding = 0;
12869 
12870     if (vts == NULL || vts[0] == 0)
12871 	return ts - (col % ts);
12872 
12873     tabcount = vts[0];
12874 
12875     for (t = 1; t <= tabcount; ++t)
12876     {
12877 	tabcol += vts[t];
12878 	if (tabcol > col)
12879 	{
12880 	    padding = (int)(tabcol - col);
12881 	    break;
12882 	}
12883     }
12884     if (t > tabcount)
12885 	padding = vts[tabcount] - (int)((col - tabcol) % vts[tabcount]);
12886 
12887     return padding;
12888 }
12889 
12890 /*
12891  * Find the size of the tab that covers a particular column.
12892  */
12893     int
12894 tabstop_at(colnr_T col, int ts, int *vts)
12895 {
12896     int		tabcount;
12897     colnr_T	tabcol = 0;
12898     int		t;
12899     int		tab_size = 0;
12900 
12901     if (vts == 0 || vts[0] == 0)
12902 	return ts;
12903 
12904     tabcount = vts[0];
12905     for (t = 1; t <= tabcount; ++t)
12906     {
12907 	tabcol += vts[t];
12908 	if (tabcol > col)
12909 	{
12910 	    tab_size = vts[t];
12911 	    break;
12912 	}
12913     }
12914     if (t > tabcount)
12915 	tab_size = vts[tabcount];
12916 
12917     return tab_size;
12918 }
12919 
12920 /*
12921  * Find the column on which a tab starts.
12922  */
12923     colnr_T
12924 tabstop_start(colnr_T col, int ts, int *vts)
12925 {
12926     int		tabcount;
12927     colnr_T	tabcol = 0;
12928     int		t;
12929     int         excess;
12930 
12931     if (vts == NULL || vts[0] == 0)
12932 	return (col / ts) * ts;
12933 
12934     tabcount = vts[0];
12935     for (t = 1; t <= tabcount; ++t)
12936     {
12937 	tabcol += vts[t];
12938 	if (tabcol > col)
12939 	    return tabcol - vts[t];
12940     }
12941 
12942     excess = tabcol % vts[tabcount];
12943     return excess + ((col - excess) / vts[tabcount]) * vts[tabcount];
12944 }
12945 
12946 /*
12947  * Find the number of tabs and spaces necessary to get from one column
12948  * to another.
12949  */
12950     void
12951 tabstop_fromto(
12952 	colnr_T start_col,
12953 	colnr_T end_col,
12954 	int	ts_arg,
12955 	int	*vts,
12956 	int	*ntabs,
12957 	int	*nspcs)
12958 {
12959     int		spaces = end_col - start_col;
12960     colnr_T	tabcol = 0;
12961     int		padding = 0;
12962     int		tabcount;
12963     int		t;
12964     int		ts = ts_arg == 0 ? curbuf->b_p_ts : ts_arg;
12965 
12966     if (vts == NULL || vts[0] == 0)
12967     {
12968 	int tabs = 0;
12969 	int initspc = 0;
12970 
12971 	initspc = ts - (start_col % ts);
12972 	if (spaces >= initspc)
12973 	{
12974 	    spaces -= initspc;
12975 	    tabs++;
12976 	}
12977 	tabs += spaces / ts;
12978 	spaces -= (spaces / ts) * ts;
12979 
12980 	*ntabs = tabs;
12981 	*nspcs = spaces;
12982 	return;
12983     }
12984 
12985     /* Find the padding needed to reach the next tabstop. */
12986     tabcount = vts[0];
12987     for (t = 1; t <= tabcount; ++t)
12988     {
12989 	tabcol += vts[t];
12990 	if (tabcol > start_col)
12991 	{
12992 	    padding = (int)(tabcol - start_col);
12993 	    break;
12994 	}
12995     }
12996     if (t > tabcount)
12997 	padding = vts[tabcount] - (int)((start_col - tabcol) % vts[tabcount]);
12998 
12999     /* If the space needed is less than the padding no tabs can be used. */
13000     if (spaces < padding)
13001     {
13002 	*ntabs = 0;
13003 	*nspcs = spaces;
13004 	return;
13005     }
13006 
13007     *ntabs = 1;
13008     spaces -= padding;
13009 
13010     /* At least one tab has been used. See if any more will fit. */
13011     while (spaces != 0 && ++t <= tabcount)
13012     {
13013 	padding = vts[t];
13014 	if (spaces < padding)
13015 	{
13016 	    *nspcs = spaces;
13017 	    return;
13018 	}
13019 	++*ntabs;
13020 	spaces -= padding;
13021     }
13022 
13023     *ntabs += spaces / vts[tabcount];
13024     *nspcs =  spaces % vts[tabcount];
13025 }
13026 
13027 /*
13028  * See if two tabstop arrays contain the same values.
13029  */
13030     int
13031 tabstop_eq(int *ts1, int *ts2)
13032 {
13033     int		t;
13034 
13035     if ((ts1 == 0 && ts2) || (ts1 && ts2 == 0))
13036 	return FALSE;
13037     if (ts1 == ts2)
13038 	return TRUE;
13039     if (ts1[0] != ts2[0])
13040 	return FALSE;
13041 
13042     for (t = 1; t <= ts1[0]; ++t)
13043 	if (ts1[t] != ts2[t])
13044 	    return FALSE;
13045 
13046     return TRUE;
13047 }
13048 
13049 #if defined(FEAT_BEVAL) || defined(PROTO)
13050 /*
13051  * Copy a tabstop array, allocating space for the new array.
13052  */
13053     int *
13054 tabstop_copy(int *oldts)
13055 {
13056     int		*newts;
13057     int		t;
13058 
13059     if (oldts == 0)
13060 	return 0;
13061 
13062     newts = (int *) alloc((unsigned) ((oldts[0] + 1) * sizeof(int)));
13063     for (t = 0; t <= oldts[0]; ++t)
13064 	newts[t] = oldts[t];
13065 
13066     return newts;
13067 }
13068 #endif
13069 
13070 /*
13071  * Return a count of the number of tabstops.
13072  */
13073     int
13074 tabstop_count(int *ts)
13075 {
13076     return ts != NULL ? ts[0] : 0;
13077 }
13078 
13079 /*
13080  * Return the first tabstop, or 8 if there are no tabstops defined.
13081  */
13082     int
13083 tabstop_first(int *ts)
13084 {
13085     return ts != NULL ? ts[1] : 8;
13086 }
13087 
13088 #endif
13089 
13090 /*
13091  * Return the effective shiftwidth value for current buffer, using the
13092  * 'tabstop' value when 'shiftwidth' is zero.
13093  */
13094     long
13095 get_sw_value(buf_T *buf)
13096 {
13097     return get_sw_value_col(buf, 0);
13098 }
13099 
13100 /*
13101  * Idem, using the first non-black in the current line.
13102  */
13103     long
13104 get_sw_value_indent(buf_T *buf)
13105 {
13106     pos_T pos = curwin->w_cursor;
13107 
13108     pos.col = getwhitecols_curline();
13109     return get_sw_value_pos(buf, &pos);
13110 }
13111 
13112 /*
13113  * Idem, using "pos".
13114  */
13115     long
13116 get_sw_value_pos(buf_T *buf, pos_T *pos)
13117 {
13118     pos_T save_cursor = curwin->w_cursor;
13119     long sw_value;
13120 
13121     curwin->w_cursor = *pos;
13122     sw_value = get_sw_value_col(buf, get_nolist_virtcol());
13123     curwin->w_cursor = save_cursor;
13124     return sw_value;
13125 }
13126 
13127 /*
13128  * Idem, using virtual column "col".
13129  */
13130     long
13131 get_sw_value_col(buf_T *buf, colnr_T col UNUSED)
13132 {
13133     return buf->b_p_sw ? buf->b_p_sw :
13134  #ifdef FEAT_VARTABS
13135 	tabstop_at(col, buf->b_p_ts, buf->b_p_vts_array);
13136  #else
13137 	buf->b_p_ts;
13138  #endif
13139 }
13140 
13141 /*
13142  * Return the effective softtabstop value for the current buffer, using the
13143  * 'shiftwidth' value when 'softtabstop' is negative.
13144  */
13145     long
13146 get_sts_value(void)
13147 {
13148     return curbuf->b_p_sts < 0 ? get_sw_value(curbuf) : curbuf->b_p_sts;
13149 }
13150 
13151 /*
13152  * Return the effective 'scrolloff' value for the current window, using the
13153  * global value when appropriate.
13154  */
13155     long
13156 get_scrolloff_value(void)
13157 {
13158     return curwin->w_p_so < 0 ? p_so : curwin->w_p_so;
13159 }
13160 
13161 /*
13162  * Return the effective 'sidescrolloff' value for the current window, using the
13163  * global value when appropriate.
13164  */
13165     long
13166 get_sidescrolloff_value(void)
13167 {
13168     return curwin->w_p_siso < 0 ? p_siso : curwin->w_p_siso;
13169 }
13170 
13171 /*
13172  * Check matchpairs option for "*initc".
13173  * If there is a match set "*initc" to the matching character and "*findc" to
13174  * the opposite character.  Set "*backwards" to the direction.
13175  * When "switchit" is TRUE swap the direction.
13176  */
13177     void
13178 find_mps_values(
13179     int	    *initc,
13180     int	    *findc,
13181     int	    *backwards,
13182     int	    switchit)
13183 {
13184     char_u	*ptr;
13185 
13186     ptr = curbuf->b_p_mps;
13187     while (*ptr != NUL)
13188     {
13189 	if (has_mbyte)
13190 	{
13191 	    char_u *prev;
13192 
13193 	    if (mb_ptr2char(ptr) == *initc)
13194 	    {
13195 		if (switchit)
13196 		{
13197 		    *findc = *initc;
13198 		    *initc = mb_ptr2char(ptr + mb_ptr2len(ptr) + 1);
13199 		    *backwards = TRUE;
13200 		}
13201 		else
13202 		{
13203 		    *findc = mb_ptr2char(ptr + mb_ptr2len(ptr) + 1);
13204 		    *backwards = FALSE;
13205 		}
13206 		return;
13207 	    }
13208 	    prev = ptr;
13209 	    ptr += mb_ptr2len(ptr) + 1;
13210 	    if (mb_ptr2char(ptr) == *initc)
13211 	    {
13212 		if (switchit)
13213 		{
13214 		    *findc = *initc;
13215 		    *initc = mb_ptr2char(prev);
13216 		    *backwards = FALSE;
13217 		}
13218 		else
13219 		{
13220 		    *findc = mb_ptr2char(prev);
13221 		    *backwards = TRUE;
13222 		}
13223 		return;
13224 	    }
13225 	    ptr += mb_ptr2len(ptr);
13226 	}
13227 	else
13228 	{
13229 	    if (*ptr == *initc)
13230 	    {
13231 		if (switchit)
13232 		{
13233 		    *backwards = TRUE;
13234 		    *findc = *initc;
13235 		    *initc = ptr[2];
13236 		}
13237 		else
13238 		{
13239 		    *backwards = FALSE;
13240 		    *findc = ptr[2];
13241 		}
13242 		return;
13243 	    }
13244 	    ptr += 2;
13245 	    if (*ptr == *initc)
13246 	    {
13247 		if (switchit)
13248 		{
13249 		    *backwards = FALSE;
13250 		    *findc = *initc;
13251 		    *initc = ptr[-2];
13252 		}
13253 		else
13254 		{
13255 		    *backwards = TRUE;
13256 		    *findc =  ptr[-2];
13257 		}
13258 		return;
13259 	    }
13260 	    ++ptr;
13261 	}
13262 	if (*ptr == ',')
13263 	    ++ptr;
13264     }
13265 }
13266 
13267 #if defined(FEAT_LINEBREAK) || defined(PROTO)
13268 /*
13269  * This is called when 'breakindentopt' is changed and when a window is
13270  * initialized.
13271  */
13272     static int
13273 briopt_check(win_T *wp)
13274 {
13275     char_u	*p;
13276     int		bri_shift = 0;
13277     long	bri_min = 20;
13278     int		bri_sbr = FALSE;
13279 
13280     p = wp->w_p_briopt;
13281     while (*p != NUL)
13282     {
13283 	if (STRNCMP(p, "shift:", 6) == 0
13284 		 && ((p[6] == '-' && VIM_ISDIGIT(p[7])) || VIM_ISDIGIT(p[6])))
13285 	{
13286 	    p += 6;
13287 	    bri_shift = getdigits(&p);
13288 	}
13289 	else if (STRNCMP(p, "min:", 4) == 0 && VIM_ISDIGIT(p[4]))
13290 	{
13291 	    p += 4;
13292 	    bri_min = getdigits(&p);
13293 	}
13294 	else if (STRNCMP(p, "sbr", 3) == 0)
13295 	{
13296 	    p += 3;
13297 	    bri_sbr = TRUE;
13298 	}
13299 	if (*p != ',' && *p != NUL)
13300 	    return FAIL;
13301 	if (*p == ',')
13302 	    ++p;
13303     }
13304 
13305     wp->w_p_brishift = bri_shift;
13306     wp->w_p_brimin   = bri_min;
13307     wp->w_p_brisbr   = bri_sbr;
13308 
13309     return OK;
13310 }
13311 #endif
13312 
13313 /*
13314  * Get the local or global value of 'backupcopy'.
13315  */
13316     unsigned int
13317 get_bkc_value(buf_T *buf)
13318 {
13319     return buf->b_bkc_flags ? buf->b_bkc_flags : bkc_flags;
13320 }
13321 
13322 #if defined(FEAT_SIGNS) || defined(PROTO)
13323 /*
13324  * Return TRUE when window "wp" has a column to draw signs in.
13325  */
13326      int
13327 signcolumn_on(win_T *wp)
13328 {
13329     if (*wp->w_p_scl == 'n')
13330 	return FALSE;
13331     if (*wp->w_p_scl == 'y')
13332 	return TRUE;
13333     return (wp->w_buffer->b_signlist != NULL
13334 # ifdef FEAT_NETBEANS_INTG
13335 			|| wp->w_buffer->b_has_sign_column
13336 # endif
13337 		    );
13338 }
13339 #endif
13340 
13341 #if defined(FEAT_EVAL) || defined(PROTO)
13342 /*
13343  * Get window or buffer local options.
13344  */
13345     dict_T *
13346 get_winbuf_options(int bufopt)
13347 {
13348     dict_T	*d;
13349     int		opt_idx;
13350 
13351     d = dict_alloc();
13352     if (d == NULL)
13353 	return NULL;
13354 
13355     for (opt_idx = 0; !istermoption(&options[opt_idx]); opt_idx++)
13356     {
13357 	struct vimoption *opt = &options[opt_idx];
13358 
13359 	if ((bufopt && (opt->indir & PV_BUF))
13360 					 || (!bufopt && (opt->indir & PV_WIN)))
13361 	{
13362 	    char_u *varp = get_varp(opt);
13363 
13364 	    if (varp != NULL)
13365 	    {
13366 		if (opt->flags & P_STRING)
13367 		    dict_add_string(d, opt->fullname, *(char_u **)varp);
13368 		else if (opt->flags & P_NUM)
13369 		    dict_add_number(d, opt->fullname, *(long *)varp);
13370 		else
13371 		    dict_add_number(d, opt->fullname, *(int *)varp);
13372 	    }
13373 	}
13374     }
13375 
13376     return d;
13377 }
13378 #endif
13379