xref: /vim-8.2.3635/src/option.c (revision 2df6dcc5) 
1 /* vi:set ts=8 sts=4 sw=4:
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/help.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_BOTH is added: global option which also has a local value.
42  */
43 #define PV_BOTH 0x1000
44 #define OPT_BOTH(x) (idopt_T)(PV_BOTH + (int)(x))
45 
46 typedef enum
47 {
48     PV_NONE = 0
49     , PV_AI
50     , PV_AR
51     , PV_ARAB
52     , PV_BH
53     , PV_BIN
54     , PV_BL
55     , PV_BOMB
56     , PV_BT
57     , PV_CI
58     , PV_CIN
59     , PV_CINK
60     , PV_CINO
61     , PV_CINW
62     , PV_CMS
63     , PV_COM
64     , PV_CPT
65     , PV_CFU
66     , PV_DEF
67     , PV_DICT
68     , PV_DIFF
69     , PV_EFM
70     , PV_EOL
71     , PV_EP
72     , PV_ET
73     , PV_FDC
74     , PV_FDE
75     , PV_FDI
76     , PV_FDL
77     , PV_FDM
78     , PV_FDN
79     , PV_FDT
80     , PV_FEN
81     , PV_FENC
82     , PV_FF
83     , PV_FML
84     , PV_FMR
85     , PV_FO
86     , PV_FT
87     , PV_GP
88     , PV_IMI
89     , PV_IMS
90     , PV_INC
91     , PV_INDE
92     , PV_INDK
93     , PV_INEX
94     , PV_INF
95     , PV_ISK
96     , PV_KEY
97     , PV_KMAP
98     , PV_KP
99     , PV_LBR
100     , PV_LISP
101     , PV_LIST
102     , PV_MA
103     , PV_ML
104     , PV_MOD
105     , PV_MP
106     , PV_MPS
107     , PV_NF
108     , PV_NU
109     , PV_NUW
110     , PV_OFT
111     , PV_PATH
112     , PV_PI
113     , PV_PVW
114     , PV_QE
115     , PV_RL
116     , PV_RLC
117     , PV_RO
118     , PV_SCBIND
119     , PV_SCROLL
120     , PV_SI
121     , PV_SN
122     , PV_STS
123     , PV_SUA
124     , PV_SW
125     , PV_SWF
126     , PV_SYN
127     , PV_TAGS
128     , PV_TS
129     , PV_TSR
130     , PV_TW
131     , PV_TX
132     , PV_WFH
133     , PV_WM
134     , PV_WRAP
135 } idopt_T;
136 
137 /*
138  * Options local to a window have a value local to a buffer and global to all
139  * buffers.  Indicate this by setting "var" to VAR_WIN.
140  */
141 #define VAR_WIN ((char_u *)-1)
142 
143 /*
144  * These the global values for options which are also local to a buffer.
145  * Only to be used in option.c!
146  */
147 static int	p_ai;
148 static int	p_bin;
149 #ifdef FEAT_MBYTE
150 static int	p_bomb;
151 #endif
152 #if defined(FEAT_QUICKFIX)
153 static char_u	*p_bh;
154 static char_u	*p_bt;
155 #endif
156 static int	p_bl;
157 static int	p_ci;
158 #ifdef FEAT_CINDENT
159 static int	p_cin;
160 static char_u	*p_cink;
161 static char_u	*p_cino;
162 #endif
163 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
164 static char_u	*p_cinw;
165 #endif
166 #ifdef FEAT_COMMENTS
167 static char_u	*p_com;
168 #endif
169 #ifdef FEAT_FOLDING
170 static char_u	*p_cms;
171 #endif
172 #ifdef FEAT_INS_EXPAND
173 static char_u	*p_cpt;
174 #endif
175 #ifdef FEAT_COMPL_FUNC
176 static char_u	*p_cfu;
177 #endif
178 static int	p_eol;
179 static int	p_et;
180 #ifdef FEAT_MBYTE
181 static char_u	*p_fenc;
182 #endif
183 static char_u	*p_ff;
184 static char_u	*p_fo;
185 #ifdef FEAT_AUTOCMD
186 static char_u	*p_ft;
187 #endif
188 static long	p_iminsert;
189 static long	p_imsearch;
190 #if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
191 static char_u	*p_inex;
192 #endif
193 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
194 static char_u	*p_inde;
195 static char_u	*p_indk;
196 #endif
197 static int	p_inf;
198 static char_u	*p_isk;
199 #ifdef FEAT_CRYPT
200 static char_u	*p_key;
201 #endif
202 #ifdef FEAT_LISP
203 static int	p_lisp;
204 #endif
205 static int	p_ml;
206 static int	p_ma;
207 static int	p_mod;
208 static char_u	*p_mps;
209 static char_u	*p_nf;
210 #ifdef FEAT_OSFILETYPE
211 static char_u	*p_oft;
212 #endif
213 static int	p_pi;
214 #ifdef FEAT_TEXTOBJ
215 static char_u	*p_qe;
216 #endif
217 static int	p_ro;
218 #ifdef FEAT_SMARTINDENT
219 static int	p_si;
220 #endif
221 #ifndef SHORT_FNAME
222 static int	p_sn;
223 #endif
224 static long	p_sts;
225 #if defined(FEAT_SEARCHPATH)
226 static char_u	*p_sua;
227 #endif
228 static long	p_sw;
229 static int	p_swf;
230 #ifdef FEAT_SYN_HL
231 static char_u	*p_syn;
232 #endif
233 static long	p_ts;
234 static long	p_tw;
235 static int	p_tx;
236 static long	p_wm;
237 #ifdef FEAT_KEYMAP
238 static char_u	*p_keymap;
239 #endif
240 
241 /* Saved values for when 'bin' is set. */
242 static int	p_et_nobin;
243 static int	p_ml_nobin;
244 static long	p_tw_nobin;
245 static long	p_wm_nobin;
246 
247 /* Saved values for when 'paste' is set */
248 static long	p_tw_nopaste;
249 static long	p_wm_nopaste;
250 static long	p_sts_nopaste;
251 static int	p_ai_nopaste;
252 
253 struct vimoption
254 {
255     char	*fullname;	/* full option name */
256     char	*shortname;	/* permissible abbreviation */
257     long_u	flags;		/* see below */
258     char_u	*var;		/* global option: pointer to variable;
259 				 * window-local option: VAR_WIN;
260 				 * buffer-local option: global value */
261     idopt_T	indir;		/* global option: PV_NONE;
262 				 * local option: indirect option index */
263     char_u	*def_val[2];	/* default values for variable (vi and vim) */
264 #ifdef FEAT_EVAL
265     scid_T	scriptID;	/* script in which the option was last set */
266 #endif
267 };
268 
269 #define VI_DEFAULT  0	    /* def_val[VI_DEFAULT] is Vi default value */
270 #define VIM_DEFAULT 1	    /* def_val[VIM_DEFAULT] is Vim default value */
271 
272 /*
273  * Flags
274  */
275 #define P_BOOL		0x01	/* the option is boolean */
276 #define P_NUM		0x02	/* the option is numeric */
277 #define P_STRING	0x04	/* the option is a string */
278 #define P_ALLOCED	0x08	/* the string option is in allocated memory,
279 				    must use vim_free() when assigning new
280 				    value. Not set if default is the same. */
281 #define P_EXPAND	0x10	/* environment expansion.  NOTE: P_EXPAND can
282 				   never be used for local or hidden options! */
283 #define P_NODEFAULT	0x40	/* don't set to default value */
284 #define P_DEF_ALLOCED	0x80	/* default value is in allocated memory, must
285 				    use vim_free() when assigning new value */
286 #define P_WAS_SET	0x100	/* option has been set/reset */
287 #define P_NO_MKRC	0x200	/* don't include in :mkvimrc output */
288 #define P_VI_DEF	0x400	/* Use Vi default for Vim */
289 #define P_VIM		0x800	/* Vim option, reset when 'cp' set */
290 
291 				/* when option changed, what to display: */
292 #define P_RSTAT		0x1000	/* redraw status lines */
293 #define P_RWIN		0x2000	/* redraw current window */
294 #define P_RBUF		0x4000	/* redraw current buffer */
295 #define P_RALL		0x6000	/* redraw all windows */
296 #define P_RCLR		0x7000	/* clear and redraw all */
297 
298 #define P_COMMA		0x8000	/* comma separated list */
299 #define P_NODUP		0x10000L/* don't allow duplicate strings */
300 #define P_FLAGLIST	0x20000L/* list of single-char flags */
301 
302 #define P_SECURE	0x40000L/* cannot change in modeline or secure mode */
303 #define P_GETTEXT	0x80000L/* expand default value with _() */
304 #define P_NOGLOB       0x100000L/* do not use local value for global vimrc */
305 
306 /*
307  * options[] is initialized here.
308  * The order of the options MUST be alphabetic for ":set all" and findoption().
309  * All option names MUST start with a lowercase letter (for findoption()).
310  * Exception: "t_" options are at the end.
311  * The options with a NULL variable are 'hidden': a set command for them is
312  * ignored and they are not printed.
313  */
314 static struct vimoption
315 #ifdef FEAT_GUI_W16
316 	_far
317 #endif
318 	options[] =
319 {
320     {"aleph",	    "al",   P_NUM|P_VI_DEF,
321 #ifdef FEAT_RIGHTLEFT
322 			    (char_u *)&p_aleph, PV_NONE,
323 #else
324 			    (char_u *)NULL, PV_NONE,
325 #endif
326 			    {
327 #if (defined(MSDOS) || defined(WIN3264) || defined(OS2)) && !defined(FEAT_GUI_W32)
328 			    (char_u *)128L,
329 #else
330 			    (char_u *)224L,
331 #endif
332 					    (char_u *)0L}},
333     {"antialias",   "anti", P_BOOL|P_VI_DEF|P_VIM|P_RCLR,
334 #if defined(FEAT_GUI) && defined(MACOS_X)
335 			    (char_u *)&p_antialias, PV_NONE,
336 			    {(char_u *)FALSE, (char_u *)FALSE}
337 #else
338 			    (char_u *)NULL, PV_NONE,
339 			    {(char_u *)FALSE, (char_u *)FALSE}
340 #endif
341 			    },
342     {"arabic",	    "arab", P_BOOL|P_VI_DEF|P_VIM,
343 #ifdef FEAT_ARABIC
344 			    (char_u *)VAR_WIN, PV_ARAB,
345 #else
346 			    (char_u *)NULL, PV_NONE,
347 #endif
348 			    {(char_u *)FALSE, (char_u *)0L}},
349     {"arabicshape", "arshape", P_BOOL|P_VI_DEF|P_VIM|P_RCLR,
350 #ifdef FEAT_ARABIC
351 			    (char_u *)&p_arshape, PV_NONE,
352 #else
353 			    (char_u *)NULL, PV_NONE,
354 #endif
355 			    {(char_u *)TRUE, (char_u *)0L}},
356     {"allowrevins", "ari",  P_BOOL|P_VI_DEF|P_VIM,
357 #ifdef FEAT_RIGHTLEFT
358 			    (char_u *)&p_ari, PV_NONE,
359 #else
360 			    (char_u *)NULL, PV_NONE,
361 #endif
362 			    {(char_u *)FALSE, (char_u *)0L}},
363     {"altkeymap",   "akm",  P_BOOL|P_VI_DEF,
364 #ifdef FEAT_FKMAP
365 			    (char_u *)&p_altkeymap, PV_NONE,
366 #else
367 			    (char_u *)NULL, PV_NONE,
368 #endif
369 			    {(char_u *)FALSE, (char_u *)0L}},
370     {"ambiwidth",  "ambw",  P_STRING|P_VI_DEF|P_RCLR,
371 #if defined(FEAT_MBYTE)
372 			    (char_u *)&p_ambw, PV_NONE,
373 			    {(char_u *)"single", (char_u *)0L}
374 #else
375 			    (char_u *)NULL, PV_NONE,
376 			    {(char_u *)0L, (char_u *)0L}
377 #endif
378 			    },
379 #if defined(FEAT_NETBEANS_INTG) || defined(FEAT_SUN_WORKSHOP)
380     {"autochdir",  "acd",   P_BOOL|P_VI_DEF,
381 			    (char_u *)&p_acd, PV_NONE,
382 			    {(char_u *)FALSE, (char_u *)0L}},
383 #endif
384     {"autoindent",  "ai",   P_BOOL|P_VI_DEF,
385 			    (char_u *)&p_ai, PV_AI,
386 			    {(char_u *)FALSE, (char_u *)0L}},
387     {"autoprint",   "ap",   P_BOOL|P_VI_DEF,
388 			    (char_u *)NULL, PV_NONE,
389 			    {(char_u *)FALSE, (char_u *)0L}},
390     {"autoread",    "ar",   P_BOOL|P_VI_DEF,
391 			    (char_u *)&p_ar, OPT_BOTH(PV_AR),
392 			    {(char_u *)FALSE, (char_u *)0L}},
393     {"autowrite",   "aw",   P_BOOL|P_VI_DEF,
394 			    (char_u *)&p_aw, PV_NONE,
395 			    {(char_u *)FALSE, (char_u *)0L}},
396     {"autowriteall","awa",  P_BOOL|P_VI_DEF,
397 			    (char_u *)&p_awa, PV_NONE,
398 			    {(char_u *)FALSE, (char_u *)0L}},
399     {"background",  "bg",   P_STRING|P_VI_DEF|P_RCLR,
400 			    (char_u *)&p_bg, PV_NONE,
401 			    {
402 #if (defined(MSDOS) || defined(OS2) || defined(WIN3264)) && !defined(FEAT_GUI)
403 			    (char_u *)"dark",
404 #else
405 			    (char_u *)"light",
406 #endif
407 					    (char_u *)0L}},
408     {"backspace",   "bs",   P_STRING|P_VI_DEF|P_VIM|P_COMMA|P_NODUP,
409 			    (char_u *)&p_bs, PV_NONE,
410 			    {(char_u *)"", (char_u *)0L}},
411     {"backup",	    "bk",   P_BOOL|P_VI_DEF|P_VIM,
412 			    (char_u *)&p_bk, PV_NONE,
413 			    {(char_u *)FALSE, (char_u *)0L}},
414     {"backupcopy",  "bkc",  P_STRING|P_VIM|P_COMMA|P_NODUP,
415 			    (char_u *)&p_bkc, PV_NONE,
416 #ifdef UNIX
417 			    {(char_u *)"yes", (char_u *)"auto"}
418 #else
419 			    {(char_u *)"auto", (char_u *)"auto"}
420 #endif
421 			    },
422     {"backupdir",   "bdir", P_STRING|P_EXPAND|P_VI_DEF|P_COMMA|P_NODUP|P_SECURE,
423 			    (char_u *)&p_bdir, PV_NONE,
424 			    {(char_u *)DFLT_BDIR, (char_u *)0L}},
425     {"backupext",   "bex",  P_STRING|P_VI_DEF,
426 			    (char_u *)&p_bex, PV_NONE,
427 			    {
428 #ifdef VMS
429 			    (char_u *)"_",
430 #else
431 			    (char_u *)"~",
432 #endif
433 					    (char_u *)0L}},
434     {"backupskip",  "bsk",  P_STRING|P_VI_DEF|P_COMMA,
435 #ifdef FEAT_WILDIGN
436 			    (char_u *)&p_bsk, PV_NONE,
437 			    {(char_u *)"", (char_u *)0L}
438 #else
439 			    (char_u *)NULL, PV_NONE,
440 			    {(char_u *)0L, (char_u *)0L}
441 #endif
442 			    },
443 #ifdef FEAT_BEVAL
444     {"balloondelay","bdlay",P_NUM|P_VI_DEF,
445 			    (char_u *)&p_bdlay, PV_NONE,
446 			    {(char_u *)600L, (char_u *)0L}},
447 #endif
448 #if defined(FEAT_BEVAL) && (defined(FEAT_SUN_WORKSHOP) \
449 	|| defined(FEAT_NETBEANS_INTG))
450     {"ballooneval", "beval",P_BOOL|P_VI_DEF|P_NO_MKRC,
451 			    (char_u *)&p_beval, PV_NONE,
452 			    {(char_u*)FALSE, (char_u *)0L}},
453 #endif
454     {"beautify",    "bf",   P_BOOL|P_VI_DEF,
455 			    (char_u *)NULL, PV_NONE,
456 			    {(char_u *)FALSE, (char_u *)0L}},
457     {"binary",	    "bin",  P_BOOL|P_VI_DEF|P_RSTAT,
458 			    (char_u *)&p_bin, PV_BIN,
459 			    {(char_u *)FALSE, (char_u *)0L}},
460     {"bioskey",	    "biosk",P_BOOL|P_VI_DEF,
461 #ifdef MSDOS
462 			    (char_u *)&p_biosk, PV_NONE,
463 #else
464 			    (char_u *)NULL, PV_NONE,
465 #endif
466 			    {(char_u *)TRUE, (char_u *)0L}},
467     {"bomb",	    NULL,   P_BOOL|P_NO_MKRC|P_VI_DEF|P_RSTAT,
468 #ifdef FEAT_MBYTE
469 			    (char_u *)&p_bomb, PV_BOMB,
470 #else
471 			    (char_u *)NULL, PV_NONE,
472 #endif
473 			    {(char_u *)FALSE, (char_u *)0L}},
474     {"breakat",	    "brk",  P_STRING|P_VI_DEF|P_RALL|P_FLAGLIST,
475 #ifdef FEAT_LINEBREAK
476 			    (char_u *)&p_breakat, PV_NONE,
477 			    {(char_u *)" \t!@*-+;:,./?", (char_u *)0L}
478 #else
479 			    (char_u *)NULL, PV_NONE,
480 			    {(char_u *)0L, (char_u *)0L}
481 #endif
482 			    },
483     {"browsedir",   "bsdir",P_STRING|P_VI_DEF,
484 #ifdef FEAT_BROWSE
485 			    (char_u *)&p_bsdir, PV_NONE,
486 			    {(char_u *)"last", (char_u *)0L}
487 #else
488 			    (char_u *)NULL, PV_NONE,
489 			    {(char_u *)0L, (char_u *)0L}
490 #endif
491 			    },
492     {"bufhidden",   "bh",   P_STRING|P_ALLOCED|P_VI_DEF|P_NOGLOB,
493 #if defined(FEAT_QUICKFIX)
494 			    (char_u *)&p_bh, PV_BH,
495 			    {(char_u *)"", (char_u *)0L}
496 #else
497 			    (char_u *)NULL, PV_NONE,
498 			    {(char_u *)0L, (char_u *)0L}
499 #endif
500 			    },
501     {"buflisted",   "bl",   P_BOOL|P_VI_DEF|P_NOGLOB,
502 			    (char_u *)&p_bl, PV_BL,
503 			    {(char_u *)1L, (char_u *)0L}
504 			    },
505     {"buftype",	    "bt",   P_STRING|P_ALLOCED|P_VI_DEF|P_NOGLOB,
506 #if defined(FEAT_QUICKFIX)
507 			    (char_u *)&p_bt, PV_BT,
508 			    {(char_u *)"", (char_u *)0L}
509 #else
510 			    (char_u *)NULL, PV_NONE,
511 			    {(char_u *)0L, (char_u *)0L}
512 #endif
513 			    },
514     {"casemap",	    "cmp",   P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
515 			    (char_u *)&p_cmp, PV_NONE,
516 			    {(char_u *)"internal,keepascii", (char_u *)0L}
517 			    },
518     {"cdpath",	    "cd",   P_STRING|P_EXPAND|P_VI_DEF|P_COMMA|P_NODUP,
519 #ifdef FEAT_SEARCHPATH
520 			    (char_u *)&p_cdpath, PV_NONE,
521 			    {(char_u *)",,", (char_u *)0L}
522 #else
523 			    (char_u *)NULL, PV_NONE,
524 			    {(char_u *)0L, (char_u *)0L}
525 #endif
526 			    },
527     {"cedit",	    NULL,   P_STRING,
528 #ifdef FEAT_CMDWIN
529 			    (char_u *)&p_cedit, PV_NONE,
530 			    {(char_u *)"", (char_u *)CTRL_F_STR}
531 #else
532 			    (char_u *)NULL, PV_NONE,
533 			    {(char_u *)0L, (char_u *)0L}
534 #endif
535 			    },
536     {"charconvert",  "ccv", P_STRING|P_VI_DEF|P_SECURE,
537 #if defined(FEAT_MBYTE) && defined(FEAT_EVAL)
538 			    (char_u *)&p_ccv, PV_NONE,
539 			    {(char_u *)"", (char_u *)0L}
540 #else
541 			    (char_u *)NULL, PV_NONE,
542 			    {(char_u *)0L, (char_u *)0L}
543 #endif
544 			    },
545     {"cindent",	    "cin",  P_BOOL|P_VI_DEF|P_VIM,
546 #ifdef FEAT_CINDENT
547 			    (char_u *)&p_cin, PV_CIN,
548 #else
549 			    (char_u *)NULL, PV_NONE,
550 #endif
551 			    {(char_u *)FALSE, (char_u *)0L}},
552     {"cinkeys",	    "cink", P_STRING|P_ALLOCED|P_VI_DEF|P_COMMA|P_NODUP,
553 #ifdef FEAT_CINDENT
554 			    (char_u *)&p_cink, PV_CINK,
555 			    {(char_u *)"0{,0},0),:,0#,!^F,o,O,e", (char_u *)0L}
556 #else
557 			    (char_u *)NULL, PV_NONE,
558 			    {(char_u *)0L, (char_u *)0L}
559 #endif
560 			    },
561     {"cinoptions",  "cino", P_STRING|P_ALLOCED|P_VI_DEF|P_COMMA|P_NODUP,
562 #ifdef FEAT_CINDENT
563 			    (char_u *)&p_cino, PV_CINO,
564 #else
565 			    (char_u *)NULL, PV_NONE,
566 #endif
567 			    {(char_u *)"", (char_u *)0L}},
568     {"cinwords",    "cinw", P_STRING|P_ALLOCED|P_VI_DEF|P_COMMA|P_NODUP,
569 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
570 			    (char_u *)&p_cinw, PV_CINW,
571 			    {(char_u *)"if,else,while,do,for,switch",
572 				(char_u *)0L}
573 #else
574 			    (char_u *)NULL, PV_NONE,
575 			    {(char_u *)0L, (char_u *)0L}
576 #endif
577 			    },
578     {"clipboard",   "cb",   P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
579 #ifdef FEAT_CLIPBOARD
580 			    (char_u *)&p_cb, PV_NONE,
581 # ifdef FEAT_XCLIPBOARD
582 			    {(char_u *)"autoselect,exclude:cons\\|linux",
583 							       (char_u *)0L}
584 # else
585 			    {(char_u *)"", (char_u *)0L}
586 # endif
587 #else
588 			    (char_u *)NULL, PV_NONE,
589 			    {(char_u *)"", (char_u *)0L}
590 #endif
591 			    },
592     {"cmdheight",   "ch",   P_NUM|P_VI_DEF|P_RALL,
593 			    (char_u *)&p_ch, PV_NONE,
594 			    {(char_u *)1L, (char_u *)0L}},
595     {"cmdwinheight", "cwh", P_NUM|P_VI_DEF,
596 #ifdef FEAT_CMDWIN
597 			    (char_u *)&p_cwh, PV_NONE,
598 #else
599 			    (char_u *)NULL, PV_NONE,
600 #endif
601 			    {(char_u *)7L, (char_u *)0L}},
602     {"columns",	    "co",   P_NUM|P_NODEFAULT|P_NO_MKRC|P_VI_DEF|P_RCLR,
603 			    (char_u *)&Columns, PV_NONE,
604 			    {(char_u *)80L, (char_u *)0L}},
605     {"comments",    "com",  P_STRING|P_ALLOCED|P_VI_DEF|P_COMMA|P_NODUP,
606 #ifdef FEAT_COMMENTS
607 			    (char_u *)&p_com, PV_COM,
608 			    {(char_u *)"s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-",
609 				(char_u *)0L}
610 #else
611 			    (char_u *)NULL, PV_NONE,
612 			    {(char_u *)0L, (char_u *)0L}
613 #endif
614 			    },
615     {"commentstring", "cms", P_STRING|P_ALLOCED|P_VI_DEF,
616 #ifdef FEAT_FOLDING
617 			    (char_u *)&p_cms, PV_CMS,
618 			    {(char_u *)"/*%s*/", (char_u *)0L}
619 #else
620 			    (char_u *)NULL, PV_NONE,
621 			    {(char_u *)0L, (char_u *)0L}
622 #endif
623 			    },
624     {"compatible",  "cp",   P_BOOL|P_RALL,
625 			    (char_u *)&p_cp, PV_NONE,
626 			    {(char_u *)TRUE, (char_u *)FALSE}},
627     {"complete",    "cpt",  P_STRING|P_ALLOCED|P_VI_DEF|P_COMMA|P_NODUP,
628 #ifdef FEAT_INS_EXPAND
629 			    (char_u *)&p_cpt, PV_CPT,
630 			    {(char_u *)".,w,b,u,t,i", (char_u *)0L}
631 #else
632 			    (char_u *)NULL, PV_NONE,
633 			    {(char_u *)0L, (char_u *)0L}
634 #endif
635 			    },
636     {"completefunc", "cfu", P_STRING|P_ALLOCED|P_VI_DEF|P_SECURE,
637 #ifdef FEAT_COMPL_FUNC
638 			    (char_u *)&p_cfu, PV_CFU,
639 			    {(char_u *)"", (char_u *)0L}
640 #else
641 			    (char_u *)NULL, PV_NONE,
642 			    {(char_u *)0L, (char_u *)0L}
643 #endif
644 			    },
645     {"confirm",     "cf",   P_BOOL|P_VI_DEF,
646 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
647 			    (char_u *)&p_confirm, PV_NONE,
648 #else
649 			    (char_u *)NULL, PV_NONE,
650 #endif
651 			    {(char_u *)FALSE, (char_u *)0L}},
652     {"conskey",	    "consk",P_BOOL|P_VI_DEF,
653 #ifdef MSDOS
654 			    (char_u *)&p_consk, PV_NONE,
655 #else
656 			    (char_u *)NULL, PV_NONE,
657 #endif
658 			    {(char_u *)FALSE, (char_u *)0L}},
659     {"copyindent",  "ci",   P_BOOL|P_VI_DEF|P_VIM,
660 			    (char_u *)&p_ci, PV_CI,
661 			    {(char_u *)FALSE, (char_u *)0L}},
662     {"cpoptions",   "cpo",  P_STRING|P_VIM|P_RALL|P_FLAGLIST,
663 			    (char_u *)&p_cpo, PV_NONE,
664 			    {(char_u *)CPO_ALL, (char_u *)CPO_DEFAULT}},
665     {"cscopepathcomp", "cspc", P_NUM|P_VI_DEF|P_VIM,
666 #ifdef FEAT_CSCOPE
667 			    (char_u *)&p_cspc, PV_NONE,
668 #else
669 			    (char_u *)NULL, PV_NONE,
670 #endif
671 			    {(char_u *)0L, (char_u *)0L}},
672     {"cscopeprg",   "csprg", P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
673 #ifdef FEAT_CSCOPE
674 			    (char_u *)&p_csprg, PV_NONE,
675 			    {(char_u *)"cscope", (char_u *)0L}
676 #else
677 			    (char_u *)NULL, PV_NONE,
678 			    {(char_u *)0L, (char_u *)0L}
679 #endif
680 			    },
681     {"cscopequickfix", "csqf", P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
682 #if defined(FEAT_CSCOPE) && defined(FEAT_QUICKFIX)
683 			    (char_u *)&p_csqf, PV_NONE,
684 			    {(char_u *)"", (char_u *)0L}
685 #else
686 			    (char_u *)NULL, PV_NONE,
687 			    {(char_u *)0L, (char_u *)0L}
688 #endif
689 			    },
690     {"cscopetag",   "cst",  P_BOOL|P_VI_DEF|P_VIM,
691 #ifdef FEAT_CSCOPE
692 			    (char_u *)&p_cst, PV_NONE,
693 #else
694 			    (char_u *)NULL, PV_NONE,
695 #endif
696 			    {(char_u *)0L, (char_u *)0L}},
697     {"cscopetagorder", "csto", P_NUM|P_VI_DEF|P_VIM,
698 #ifdef FEAT_CSCOPE
699 			    (char_u *)&p_csto, PV_NONE,
700 #else
701 			    (char_u *)NULL, PV_NONE,
702 #endif
703 			    {(char_u *)0L, (char_u *)0L}},
704     {"cscopeverbose", "csverb", P_BOOL|P_VI_DEF|P_VIM,
705 #ifdef FEAT_CSCOPE
706 			    (char_u *)&p_csverbose, PV_NONE,
707 #else
708 			    (char_u *)NULL, PV_NONE,
709 #endif
710 			    {(char_u *)0L, (char_u *)0L}},
711     {"debug",	    NULL,   P_STRING|P_VI_DEF,
712 			    (char_u *)&p_debug, PV_NONE,
713 			    {(char_u *)"", (char_u *)0L}},
714     {"define",	    "def",  P_STRING|P_ALLOCED|P_VI_DEF,
715 #ifdef FEAT_FIND_ID
716 			    (char_u *)&p_def, OPT_BOTH(PV_DEF),
717 			    {(char_u *)"^\\s#\\s*define", (char_u *)0L}
718 #else
719 			    (char_u *)NULL, PV_NONE,
720 			    {(char_u *)NULL, (char_u *)0L}
721 #endif
722 			    },
723     {"delcombine", "deco",  P_BOOL|P_VI_DEF|P_VIM,
724 #ifdef FEAT_MBYTE
725 			    (char_u *)&p_deco, PV_NONE,
726 #else
727 			    (char_u *)NULL, PV_NONE,
728 #endif
729 			    {(char_u *)FALSE, (char_u *)0L}
730 			    },
731     {"dictionary",  "dict", P_STRING|P_EXPAND|P_VI_DEF|P_COMMA|P_NODUP,
732 #ifdef FEAT_INS_EXPAND
733 			    (char_u *)&p_dict, OPT_BOTH(PV_DICT),
734 #else
735 			    (char_u *)NULL, PV_NONE,
736 #endif
737 			    {(char_u *)"", (char_u *)0L}},
738     {"diff",	    NULL,   P_BOOL|P_VI_DEF|P_RWIN|P_NOGLOB,
739 #ifdef FEAT_DIFF
740 			    (char_u *)VAR_WIN, PV_DIFF,
741 #else
742 			    (char_u *)NULL, PV_NONE,
743 #endif
744 			    {(char_u *)FALSE, (char_u *)0L}},
745     {"diffexpr",    "dex",  P_STRING|P_VI_DEF|P_SECURE,
746 #if defined(FEAT_DIFF) && defined(FEAT_EVAL)
747 			    (char_u *)&p_dex, PV_NONE,
748 			    {(char_u *)"", (char_u *)0L}
749 #else
750 			    (char_u *)NULL, PV_NONE,
751 			    {(char_u *)0L, (char_u *)0L}
752 #endif
753 			    },
754     {"diffopt",	    "dip",  P_STRING|P_ALLOCED|P_VI_DEF|P_RWIN|P_COMMA|P_NODUP,
755 #ifdef FEAT_DIFF
756 			    (char_u *)&p_dip, PV_NONE,
757 			    {(char_u *)"filler", (char_u *)NULL}
758 #else
759 			    (char_u *)NULL, PV_NONE,
760 			    {(char_u *)"", (char_u *)NULL}
761 #endif
762 			    },
763     {"digraph",	    "dg",   P_BOOL|P_VI_DEF|P_VIM,
764 #ifdef FEAT_DIGRAPHS
765 			    (char_u *)&p_dg, PV_NONE,
766 #else
767 			    (char_u *)NULL, PV_NONE,
768 #endif
769 			    {(char_u *)FALSE, (char_u *)0L}},
770     {"directory",   "dir",  P_STRING|P_EXPAND|P_VI_DEF|P_COMMA|P_NODUP|P_SECURE,
771 			    (char_u *)&p_dir, PV_NONE,
772 			    {(char_u *)DFLT_DIR, (char_u *)0L}},
773     {"display",	    "dy",   P_STRING|P_VI_DEF|P_COMMA|P_RALL|P_NODUP,
774 			    (char_u *)&p_dy, PV_NONE,
775 			    {(char_u *)"", (char_u *)0L}},
776     {"eadirection", "ead",  P_STRING|P_VI_DEF,
777 #ifdef FEAT_VERTSPLIT
778 			    (char_u *)&p_ead, PV_NONE,
779 			    {(char_u *)"both", (char_u *)0L}
780 #else
781 			    (char_u *)NULL, PV_NONE,
782 			    {(char_u *)NULL, (char_u *)0L}
783 #endif
784 			    },
785     {"edcompatible","ed",   P_BOOL|P_VI_DEF,
786 			    (char_u *)&p_ed, PV_NONE,
787 			    {(char_u *)FALSE, (char_u *)0L}},
788     {"encoding",    "enc",  P_STRING|P_VI_DEF|P_RCLR,
789 #ifdef FEAT_MBYTE
790 			    (char_u *)&p_enc, PV_NONE,
791 			    {(char_u *)ENC_DFLT, (char_u *)0L}
792 #else
793 			    (char_u *)NULL, PV_NONE,
794 			    {(char_u *)0L, (char_u *)0L}
795 #endif
796 			    },
797     {"endofline",   "eol",  P_BOOL|P_NO_MKRC|P_VI_DEF|P_RSTAT,
798 			    (char_u *)&p_eol, PV_EOL,
799 			    {(char_u *)TRUE, (char_u *)0L}},
800     {"equalalways", "ea",   P_BOOL|P_VI_DEF|P_RALL,
801 			    (char_u *)&p_ea, PV_NONE,
802 			    {(char_u *)TRUE, (char_u *)0L}},
803     {"equalprg",    "ep",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
804 			    (char_u *)&p_ep, OPT_BOTH(PV_EP),
805 			    {(char_u *)"", (char_u *)0L}},
806     {"errorbells",  "eb",   P_BOOL|P_VI_DEF,
807 			    (char_u *)&p_eb, PV_NONE,
808 			    {(char_u *)FALSE, (char_u *)0L}},
809     {"errorfile",   "ef",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
810 #ifdef FEAT_QUICKFIX
811 			    (char_u *)&p_ef, PV_NONE,
812 			    {(char_u *)DFLT_ERRORFILE, (char_u *)0L}
813 #else
814 			    (char_u *)NULL, PV_NONE,
815 			    {(char_u *)NULL, (char_u *)0L}
816 #endif
817 			    },
818     {"errorformat", "efm",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
819 #ifdef FEAT_QUICKFIX
820 			    (char_u *)&p_efm, OPT_BOTH(PV_EFM),
821 			    {(char_u *)DFLT_EFM, (char_u *)0L},
822 #else
823 			    (char_u *)NULL, PV_NONE,
824 			    {(char_u *)NULL, (char_u *)0L}
825 #endif
826 			    },
827     {"esckeys",	    "ek",   P_BOOL|P_VIM,
828 			    (char_u *)&p_ek, PV_NONE,
829 			    {(char_u *)FALSE, (char_u *)TRUE}},
830     {"eventignore", "ei",   P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
831 #ifdef FEAT_AUTOCMD
832 			    (char_u *)&p_ei, PV_NONE,
833 #else
834 			    (char_u *)NULL, PV_NONE,
835 #endif
836 			    {(char_u *)"", (char_u *)0L}},
837     {"expandtab",   "et",   P_BOOL|P_VI_DEF|P_VIM,
838 			    (char_u *)&p_et, PV_ET,
839 			    {(char_u *)FALSE, (char_u *)0L}},
840     {"exrc",	    "ex",   P_BOOL|P_VI_DEF|P_SECURE,
841 			    (char_u *)&p_exrc, PV_NONE,
842 			    {(char_u *)FALSE, (char_u *)0L}},
843     {"fileencoding","fenc", P_STRING|P_ALLOCED|P_VI_DEF|P_RSTAT|P_RBUF|P_NO_MKRC,
844 #ifdef FEAT_MBYTE
845 			    (char_u *)&p_fenc, PV_FENC,
846 			    {(char_u *)"", (char_u *)0L}
847 #else
848 			    (char_u *)NULL, PV_NONE,
849 			    {(char_u *)0L, (char_u *)0L}
850 #endif
851 			    },
852     {"fileencodings","fencs", P_STRING|P_VI_DEF|P_COMMA,
853 #ifdef FEAT_MBYTE
854 			    (char_u *)&p_fencs, PV_NONE,
855 			    {(char_u *)"ucs-bom", (char_u *)0L}
856 #else
857 			    (char_u *)NULL, PV_NONE,
858 			    {(char_u *)0L, (char_u *)0L}
859 #endif
860 			    },
861     {"fileformat",  "ff",   P_STRING|P_ALLOCED|P_VI_DEF|P_RSTAT|P_NO_MKRC,
862 			    (char_u *)&p_ff, PV_FF,
863 			    {(char_u *)DFLT_FF, (char_u *)0L}},
864     {"fileformats", "ffs",  P_STRING|P_VIM|P_COMMA|P_NODUP,
865 			    (char_u *)&p_ffs, PV_NONE,
866 			    {(char_u *)DFLT_FFS_VI, (char_u *)DFLT_FFS_VIM}},
867     {"filetype",    "ft",   P_STRING|P_ALLOCED|P_VI_DEF|P_NOGLOB,
868 #ifdef FEAT_AUTOCMD
869 			    (char_u *)&p_ft, PV_FT,
870 			    {(char_u *)"", (char_u *)0L}
871 #else
872 			    (char_u *)NULL, PV_NONE,
873 			    {(char_u *)0L, (char_u *)0L}
874 #endif
875 			    },
876     {"fillchars",   "fcs",  P_STRING|P_VI_DEF|P_RALL|P_COMMA|P_NODUP,
877 #if defined(FEAT_WINDOWS) || defined(FEAT_FOLDING)
878 			    (char_u *)&p_fcs, PV_NONE,
879 			    {(char_u *)"vert:|,fold:-", (char_u *)0L}
880 #else
881 			    (char_u *)NULL, PV_NONE,
882 			    {(char_u *)"", (char_u *)0L}
883 #endif
884 			    },
885     {"fkmap",	    "fk",   P_BOOL|P_VI_DEF,
886 #ifdef FEAT_FKMAP
887 			    (char_u *)&p_fkmap, PV_NONE,
888 #else
889 			    (char_u *)NULL, PV_NONE,
890 #endif
891 			    {(char_u *)FALSE, (char_u *)0L}},
892     {"flash",	    "fl",   P_BOOL|P_VI_DEF,
893 			    (char_u *)NULL, PV_NONE,
894 			    {(char_u *)FALSE, (char_u *)0L}},
895 #ifdef FEAT_FOLDING
896     {"foldclose",   "fcl",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP|P_RWIN,
897 			    (char_u *)&p_fcl, PV_NONE,
898 			    {(char_u *)"", (char_u *)0L}},
899     {"foldcolumn",  "fdc",  P_NUM|P_VI_DEF|P_RWIN,
900 			    (char_u *)VAR_WIN, PV_FDC,
901 			    {(char_u *)FALSE, (char_u *)0L}},
902     {"foldenable",  "fen",  P_BOOL|P_VI_DEF|P_RWIN,
903 			    (char_u *)VAR_WIN, PV_FEN,
904 			    {(char_u *)TRUE, (char_u *)0L}},
905     {"foldexpr",    "fde",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|P_RWIN,
906 # ifdef FEAT_EVAL
907 			    (char_u *)VAR_WIN, PV_FDE,
908 			    {(char_u *)"0", (char_u *)NULL}
909 # else
910 			    (char_u *)NULL, PV_NONE,
911 			    {(char_u *)NULL, (char_u *)0L}
912 # endif
913 			    },
914     {"foldignore",  "fdi",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|P_RWIN,
915 			    (char_u *)VAR_WIN, PV_FDI,
916 			    {(char_u *)"#", (char_u *)NULL}},
917     {"foldlevel",   "fdl",  P_NUM|P_VI_DEF|P_RWIN,
918 			    (char_u *)VAR_WIN, PV_FDL,
919 			    {(char_u *)0L, (char_u *)0L}},
920     {"foldlevelstart","fdls", P_NUM|P_VI_DEF,
921 			    (char_u *)&p_fdls, PV_NONE,
922 			    {(char_u *)-1L, (char_u *)0L}},
923     {"foldmarker",  "fmr",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|
924 						       P_RWIN|P_COMMA|P_NODUP,
925 			    (char_u *)VAR_WIN, PV_FMR,
926 			    {(char_u *)"{{{,}}}", (char_u *)NULL}},
927     {"foldmethod",  "fdm",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|P_RWIN,
928 			    (char_u *)VAR_WIN, PV_FDM,
929 			    {(char_u *)"manual", (char_u *)NULL}},
930     {"foldminlines","fml",  P_NUM|P_VI_DEF|P_RWIN,
931 			    (char_u *)VAR_WIN, PV_FML,
932 			    {(char_u *)1L, (char_u *)0L}},
933     {"foldnestmax", "fdn",  P_NUM|P_VI_DEF|P_RWIN,
934 			    (char_u *)VAR_WIN, PV_FDN,
935 			    {(char_u *)20L, (char_u *)0L}},
936     {"foldopen",    "fdo",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
937 			    (char_u *)&p_fdo, PV_NONE,
938 		 {(char_u *)"block,hor,mark,percent,quickfix,search,tag,undo",
939 							       (char_u *)0L}},
940     {"foldtext",    "fdt",  P_STRING|P_ALLOCED|P_VIM|P_VI_DEF|P_RWIN,
941 # ifdef FEAT_EVAL
942 			    (char_u *)VAR_WIN, PV_FDT,
943 			    {(char_u *)"foldtext()", (char_u *)NULL}
944 #else
945 			    (char_u *)NULL, PV_NONE,
946 			    {(char_u *)NULL, (char_u *)0L}
947 #endif
948 			    },
949 #endif
950     {"formatoptions","fo",  P_STRING|P_ALLOCED|P_VIM|P_FLAGLIST,
951 			    (char_u *)&p_fo, PV_FO,
952 			    {(char_u *)DFLT_FO_VI, (char_u *)DFLT_FO_VIM}},
953     {"formatprg",   "fp",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
954 			    (char_u *)&p_fp, PV_NONE,
955 			    {(char_u *)"", (char_u *)0L}},
956     {"gdefault",    "gd",   P_BOOL|P_VI_DEF|P_VIM,
957 			    (char_u *)&p_gd, PV_NONE,
958 			    {(char_u *)FALSE, (char_u *)0L}},
959     {"graphic",	    "gr",   P_BOOL|P_VI_DEF,
960 			    (char_u *)NULL, PV_NONE,
961 			    {(char_u *)FALSE, (char_u *)0L}},
962     {"grepformat",  "gfm",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
963 #ifdef FEAT_QUICKFIX
964 			    (char_u *)&p_gefm, PV_NONE,
965 			    {(char_u *)DFLT_GREPFORMAT, (char_u *)0L},
966 #else
967 			    (char_u *)NULL, PV_NONE,
968 			    {(char_u *)NULL, (char_u *)0L}
969 #endif
970 			    },
971     {"grepprg",	    "gp",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
972 #ifdef FEAT_QUICKFIX
973 			    (char_u *)&p_gp, OPT_BOTH(PV_GP),
974 			    {
975 # ifdef WIN3264
976 			    /* may be changed to "grep -n" in os_win32.c */
977 			    (char_u *)"findstr /n",
978 # else
979 #  ifdef UNIX
980 			    /* Add an extra file name so that grep will always
981 			     * insert a file name in the match line. */
982 			    (char_u *)"grep -n $* /dev/null",
983 #  else
984 #   ifdef VMS
985 			    (char_u *)"SEARCH/NUMBERS ",
986 #   else
987 			    (char_u *)"grep -n ",
988 #endif
989 #endif
990 # endif
991 			    (char_u *)0L},
992 #else
993 			    (char_u *)NULL, PV_NONE,
994 			    {(char_u *)NULL, (char_u *)0L}
995 #endif
996 			    },
997     {"guicursor",    "gcr",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
998 #ifdef CURSOR_SHAPE
999 			    (char_u *)&p_guicursor, PV_NONE,
1000 			    {
1001 # ifdef FEAT_GUI
1002 				(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",
1003 # else	/* MSDOS or Win32 console */
1004 				(char_u *)"n-v-c:block,o:hor50,i-ci:hor15,r-cr:hor30,sm:block",
1005 # endif
1006 				    (char_u *)0L}
1007 #else
1008 			    (char_u *)NULL, PV_NONE,
1009 			    {(char_u *)NULL, (char_u *)0L}
1010 #endif
1011 				    },
1012     {"guifont",	    "gfn",  P_STRING|P_VI_DEF|P_RCLR|P_COMMA|P_NODUP,
1013 #ifdef FEAT_GUI
1014 			    (char_u *)&p_guifont, PV_NONE,
1015 			    {(char_u *)"", (char_u *)0L}
1016 #else
1017 			    (char_u *)NULL, PV_NONE,
1018 			    {(char_u *)NULL, (char_u *)0L}
1019 #endif
1020 				    },
1021     {"guifontset",  "gfs",  P_STRING|P_VI_DEF|P_RCLR|P_COMMA,
1022 #if defined(FEAT_GUI) && defined(FEAT_XFONTSET)
1023 			    (char_u *)&p_guifontset, PV_NONE,
1024 			    {(char_u *)"", (char_u *)0L}
1025 #else
1026 			    (char_u *)NULL, PV_NONE,
1027 			    {(char_u *)NULL, (char_u *)0L}
1028 #endif
1029 				    },
1030     {"guifontwide", "gfw",  P_STRING|P_VI_DEF|P_RCLR|P_COMMA|P_NODUP,
1031 #if defined(FEAT_GUI) && defined(FEAT_MBYTE)
1032 			    (char_u *)&p_guifontwide, PV_NONE,
1033 			    {(char_u *)"", (char_u *)0L}
1034 #else
1035 			    (char_u *)NULL, PV_NONE,
1036 			    {(char_u *)NULL, (char_u *)0L}
1037 #endif
1038 				    },
1039     {"guiheadroom", "ghr",  P_NUM|P_VI_DEF,
1040 #if defined(FEAT_GUI_GTK) || defined(FEAT_GUI_X11) || defined(FEAT_GUI_KDE)
1041 			    (char_u *)&p_ghr, PV_NONE,
1042 #else
1043 			    (char_u *)NULL, PV_NONE,
1044 #endif
1045 			    {(char_u *)50L, (char_u *)0L}},
1046     {"guioptions",  "go",   P_STRING|P_VI_DEF|P_RALL|P_FLAGLIST,
1047 #if defined(FEAT_GUI) || defined(FEAT_GUI_KDE)
1048 			    (char_u *)&p_go, PV_NONE,
1049 # if defined(UNIX) && !defined(MACOS)
1050 			    {(char_u *)"agimrLtT", (char_u *)0L}
1051 # else
1052 			    {(char_u *)"gmrLtT", (char_u *)0L}
1053 # endif
1054 #else
1055 			    (char_u *)NULL, PV_NONE,
1056 			    {(char_u *)NULL, (char_u *)0L}
1057 #endif
1058 				    },
1059     {"guipty",	    NULL,   P_BOOL|P_VI_DEF,
1060 #if defined(FEAT_GUI)
1061 			    (char_u *)&p_guipty, PV_NONE,
1062 #else
1063 			    (char_u *)NULL, PV_NONE,
1064 #endif
1065 			    {(char_u *)TRUE, (char_u *)0L}},
1066     {"hardtabs",    "ht",   P_NUM|P_VI_DEF,
1067 			    (char_u *)NULL, PV_NONE,
1068 			    {(char_u *)0L, (char_u *)0L}},
1069     {"helpfile",    "hf",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1070 			    (char_u *)&p_hf, PV_NONE,
1071 			    {(char_u *)DFLT_HELPFILE, (char_u *)0L}},
1072     {"helpheight",  "hh",   P_NUM|P_VI_DEF,
1073 #ifdef FEAT_WINDOWS
1074 			    (char_u *)&p_hh, PV_NONE,
1075 #else
1076 			    (char_u *)NULL, PV_NONE,
1077 #endif
1078 			    {(char_u *)20L, (char_u *)0L}},
1079     {"helplang",    "hlg",  P_STRING|P_VI_DEF|P_COMMA,
1080 #ifdef FEAT_MULTI_LANG
1081 			    (char_u *)&p_hlg, PV_NONE,
1082 			    {(char_u *)"", (char_u *)0L}
1083 #else
1084 			    (char_u *)NULL, PV_NONE,
1085 			    {(char_u *)0L, (char_u *)0L}
1086 #endif
1087     },
1088     {"hidden",	    "hid",  P_BOOL|P_VI_DEF,
1089 			    (char_u *)&p_hid, PV_NONE,
1090 			    {(char_u *)FALSE, (char_u *)0L}},
1091     {"highlight",   "hl",   P_STRING|P_VI_DEF|P_RCLR|P_COMMA|P_NODUP,
1092 			    (char_u *)&p_hl, PV_NONE,
1093 			    {(char_u *)"8:SpecialKey,@:NonText,d:Directory,e:ErrorMsg,i:IncSearch,l:Search,m:MoreMsg,M:ModeMsg,n:LineNr,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",
1094 				(char_u *)0L}},
1095     {"history",	    "hi",   P_NUM|P_VIM,
1096 			    (char_u *)&p_hi, PV_NONE,
1097 			    {(char_u *)0L, (char_u *)20L}},
1098     {"hkmap",	    "hk",   P_BOOL|P_VI_DEF|P_VIM,
1099 #ifdef FEAT_RIGHTLEFT
1100 			    (char_u *)&p_hkmap, PV_NONE,
1101 #else
1102 			    (char_u *)NULL, PV_NONE,
1103 #endif
1104 			    {(char_u *)FALSE, (char_u *)0L}},
1105     {"hkmapp",	    "hkp",  P_BOOL|P_VI_DEF|P_VIM,
1106 #ifdef FEAT_RIGHTLEFT
1107 			    (char_u *)&p_hkmapp, PV_NONE,
1108 #else
1109 			    (char_u *)NULL, PV_NONE,
1110 #endif
1111 			    {(char_u *)FALSE, (char_u *)0L}},
1112     {"hlsearch",    "hls",  P_BOOL|P_VI_DEF|P_VIM|P_RALL,
1113 			    (char_u *)&p_hls, PV_NONE,
1114 			    {(char_u *)FALSE, (char_u *)0L}},
1115     {"icon",	    NULL,   P_BOOL|P_VI_DEF,
1116 #ifdef FEAT_TITLE
1117 			    (char_u *)&p_icon, PV_NONE,
1118 #else
1119 			    (char_u *)NULL, PV_NONE,
1120 #endif
1121 			    {(char_u *)FALSE, (char_u *)0L}},
1122     {"iconstring",  NULL,   P_STRING|P_VI_DEF,
1123 #ifdef FEAT_TITLE
1124 			    (char_u *)&p_iconstring, PV_NONE,
1125 #else
1126 			    (char_u *)NULL, PV_NONE,
1127 #endif
1128 			    {(char_u *)"", (char_u *)0L}},
1129     {"ignorecase",  "ic",   P_BOOL|P_VI_DEF,
1130 			    (char_u *)&p_ic, PV_NONE,
1131 			    {(char_u *)FALSE, (char_u *)0L}},
1132     {"imactivatekey","imak",P_STRING|P_VI_DEF,
1133 #if defined(FEAT_XIM) && (defined(FEAT_GUI_GTK) || defined(FEAT_GUI_KDE))
1134 			    (char_u *)&p_imak, PV_NONE,
1135 #else
1136 			    (char_u *)NULL, PV_NONE,
1137 #endif
1138 			    {(char_u *)"", (char_u *)0L}},
1139     {"imcmdline",   "imc",  P_BOOL|P_VI_DEF,
1140 #ifdef USE_IM_CONTROL
1141 			    (char_u *)&p_imcmdline, PV_NONE,
1142 #else
1143 			    (char_u *)NULL, PV_NONE,
1144 #endif
1145 			    {(char_u *)FALSE, (char_u *)0L}},
1146     {"imdisable",   "imd",  P_BOOL|P_VI_DEF,
1147 #ifdef USE_IM_CONTROL
1148 			    (char_u *)&p_imdisable, PV_NONE,
1149 #else
1150 			    (char_u *)NULL, PV_NONE,
1151 #endif
1152 #ifdef __sgi
1153 			    {(char_u *)TRUE, (char_u *)0L}
1154 #else
1155 			    {(char_u *)FALSE, (char_u *)0L}
1156 #endif
1157 			    },
1158     {"iminsert",    "imi",  P_NUM|P_VI_DEF,
1159 			    (char_u *)&p_iminsert, PV_IMI,
1160 #ifdef B_IMODE_IM
1161 			    {(char_u *)B_IMODE_IM, (char_u *)0L}
1162 #else
1163 			    {(char_u *)B_IMODE_NONE, (char_u *)0L}
1164 #endif
1165 			    },
1166     {"imsearch",    "ims",  P_NUM|P_VI_DEF,
1167 			    (char_u *)&p_imsearch, PV_IMS,
1168 #ifdef B_IMODE_IM
1169 			    {(char_u *)B_IMODE_IM, (char_u *)0L}
1170 #else
1171 			    {(char_u *)B_IMODE_NONE, (char_u *)0L}
1172 #endif
1173 			    },
1174     {"include",	    "inc",  P_STRING|P_ALLOCED|P_VI_DEF,
1175 #ifdef FEAT_FIND_ID
1176 			    (char_u *)&p_inc, OPT_BOTH(PV_INC),
1177 			    {(char_u *)"^\\s*#\\s*include", (char_u *)0L}
1178 #else
1179 			    (char_u *)NULL, PV_NONE,
1180 			    {(char_u *)0L, (char_u *)0L}
1181 #endif
1182 			    },
1183     {"includeexpr", "inex", P_STRING|P_ALLOCED|P_VI_DEF,
1184 #if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
1185 			    (char_u *)&p_inex, PV_INEX,
1186 			    {(char_u *)"", (char_u *)0L}
1187 #else
1188 			    (char_u *)NULL, PV_NONE,
1189 			    {(char_u *)0L, (char_u *)0L}
1190 #endif
1191 			    },
1192     {"incsearch",   "is",   P_BOOL|P_VI_DEF|P_VIM,
1193 			    (char_u *)&p_is, PV_NONE,
1194 			    {(char_u *)FALSE, (char_u *)0L}},
1195     {"indentexpr", "inde",  P_STRING|P_ALLOCED|P_VI_DEF|P_VIM,
1196 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
1197 			    (char_u *)&p_inde, PV_INDE,
1198 			    {(char_u *)"", (char_u *)0L}
1199 #else
1200 			    (char_u *)NULL, PV_NONE,
1201 			    {(char_u *)0L, (char_u *)0L}
1202 #endif
1203 			    },
1204     {"indentkeys", "indk",  P_STRING|P_ALLOCED|P_VI_DEF|P_COMMA|P_NODUP,
1205 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
1206 			    (char_u *)&p_indk, PV_INDK,
1207 			    {(char_u *)"0{,0},:,0#,!^F,o,O,e", (char_u *)0L}
1208 #else
1209 			    (char_u *)NULL, PV_NONE,
1210 			    {(char_u *)0L, (char_u *)0L}
1211 #endif
1212 			    },
1213     {"infercase",   "inf",  P_BOOL|P_VI_DEF,
1214 			    (char_u *)&p_inf, PV_INF,
1215 			    {(char_u *)FALSE, (char_u *)0L}},
1216     {"insertmode",  "im",   P_BOOL|P_VI_DEF|P_VIM,
1217 			    (char_u *)&p_im, PV_NONE,
1218 			    {(char_u *)FALSE, (char_u *)0L}},
1219     {"isfname",	    "isf",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1220 			    (char_u *)&p_isf, PV_NONE,
1221 			    {
1222 #ifdef BACKSLASH_IN_FILENAME
1223 				/* Excluded are: & and ^ are special in cmd.exe
1224 				 * ( and ) are used in text separating fnames */
1225 			    (char_u *)"@,48-57,/,\\,.,-,_,+,,,#,$,%,{,},[,],:,@-@,!,~,=",
1226 #else
1227 # ifdef AMIGA
1228 			    (char_u *)"@,48-57,/,.,-,_,+,,,$,:",
1229 # else
1230 #  ifdef VMS
1231 			    (char_u *)"@,48-57,/,.,-,_,+,,,#,$,%,<,>,[,],:,;,~",
1232 #  else /* UNIX et al. */
1233 #   ifdef EBCDIC
1234 			    (char_u *)"@,240-249,/,.,-,_,+,,,#,$,%,~,=",
1235 #   else
1236 			    (char_u *)"@,48-57,/,.,-,_,+,,,#,$,%,~,=",
1237 #   endif
1238 #  endif
1239 # endif
1240 #endif
1241 				(char_u *)0L}},
1242     {"isident",	    "isi",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1243 			    (char_u *)&p_isi, PV_NONE,
1244 			    {
1245 #if defined(MSDOS) || defined(MSWIN) || defined(OS2)
1246 			    (char_u *)"@,48-57,_,128-167,224-235",
1247 #else
1248 # ifdef EBCDIC
1249 			    /* TODO: EBCDIC Check this! @ == isalpha()*/
1250 			    (char_u *)"@,240-249,_,66-73,81-89,98-105,"
1251 				    "112-120,128,140-142,156,158,172,"
1252 				    "174,186,191,203-207,219-225,235-239,"
1253 				    "251-254",
1254 # else
1255 			    (char_u *)"@,48-57,_,192-255",
1256 # endif
1257 #endif
1258 				(char_u *)0L}},
1259     {"iskeyword",   "isk",  P_STRING|P_ALLOCED|P_VIM|P_COMMA|P_NODUP,
1260 			    (char_u *)&p_isk, PV_ISK,
1261 			    {
1262 #ifdef EBCDIC
1263 			     (char_u *)"@,240-249,_",
1264 			     /* TODO: EBCDIC Check this! @ == isalpha()*/
1265 			     (char_u *)"@,240-249,_,66-73,81-89,98-105,"
1266 				    "112-120,128,140-142,156,158,172,"
1267 				    "174,186,191,203-207,219-225,235-239,"
1268 				    "251-254",
1269 #else
1270 				(char_u *)"@,48-57,_",
1271 # if defined(MSDOS) || defined(MSWIN) || defined(OS2)
1272 				(char_u *)"@,48-57,_,128-167,224-235"
1273 # else
1274 				(char_u *)"@,48-57,_,192-255"
1275 # endif
1276 #endif
1277 				}},
1278     {"isprint",	    "isp",  P_STRING|P_VI_DEF|P_RALL|P_COMMA|P_NODUP,
1279 			    (char_u *)&p_isp, PV_NONE,
1280 			    {
1281 #if defined(MSDOS) || defined(MSWIN) || defined(OS2) || defined(MACOS) \
1282 		|| defined(VMS)
1283 			    (char_u *)"@,~-255",
1284 #else
1285 # ifdef EBCDIC
1286 			    /* all chars above 63 are printable */
1287 			    (char_u *)"63-255",
1288 # else
1289 			    (char_u *)"@,161-255",
1290 # endif
1291 #endif
1292 				(char_u *)0L}},
1293     {"joinspaces",  "js",   P_BOOL|P_VI_DEF|P_VIM,
1294 			    (char_u *)&p_js, PV_NONE,
1295 			    {(char_u *)TRUE, (char_u *)0L}},
1296     {"key",	    NULL,   P_STRING|P_ALLOCED|P_VI_DEF|P_NO_MKRC,
1297 #ifdef FEAT_CRYPT
1298 			    (char_u *)&p_key, PV_KEY,
1299 			    {(char_u *)"", (char_u *)0L}
1300 #else
1301 			    (char_u *)NULL, PV_NONE,
1302 			    {(char_u *)0L, (char_u *)0L}
1303 #endif
1304 			    },
1305     {"keymap",	    "kmp",  P_STRING|P_ALLOCED|P_VI_DEF|P_RBUF|P_RSTAT,
1306 #ifdef FEAT_KEYMAP
1307 			    (char_u *)&p_keymap, PV_KMAP,
1308 			    {(char_u *)"", (char_u *)0L}
1309 #else
1310 			    (char_u *)NULL, PV_NONE,
1311 			    {(char_u *)"", (char_u *)0L}
1312 #endif
1313 	},
1314     {"keymodel",    "km",   P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1315 #ifdef FEAT_VISUAL
1316 			    (char_u *)&p_km, PV_NONE,
1317 #else
1318 			    (char_u *)NULL, PV_NONE,
1319 #endif
1320 			    {(char_u *)"", (char_u *)0L}},
1321     {"keywordprg",  "kp",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1322 			    (char_u *)&p_kp, OPT_BOTH(PV_KP),
1323 			    {
1324 #if defined(MSDOS) || defined(MSWIN)
1325 			    (char_u *)":help",
1326 #else
1327 #ifdef VMS
1328 			    (char_u *)"help",
1329 #else
1330 # if defined(OS2)
1331 			    (char_u *)"view /",
1332 # else
1333 #  ifdef USEMAN_S
1334 			    (char_u *)"man -s",
1335 #  else
1336 			    (char_u *)"man",
1337 #  endif
1338 # endif
1339 #endif
1340 #endif
1341 				(char_u *)0L}},
1342     {"langmap",     "lmap", P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1343 #ifdef FEAT_LANGMAP
1344 			    (char_u *)&p_langmap, PV_NONE,
1345 			    {(char_u *)"",	/* unmatched } */
1346 #else
1347 			    (char_u *)NULL, PV_NONE,
1348 			    {(char_u *)NULL,
1349 #endif
1350 				(char_u *)0L}},
1351     {"langmenu",    "lm",   P_STRING|P_VI_DEF,
1352 #if defined(FEAT_MENU) && defined(FEAT_MULTI_LANG)
1353 			    (char_u *)&p_lm, PV_NONE,
1354 #else
1355 			    (char_u *)NULL, PV_NONE,
1356 #endif
1357 			    {(char_u *)"", (char_u *)0L}},
1358     {"laststatus",  "ls",   P_NUM|P_VI_DEF|P_RALL,
1359 #ifdef FEAT_WINDOWS
1360 			    (char_u *)&p_ls, PV_NONE,
1361 #else
1362 			    (char_u *)NULL, PV_NONE,
1363 #endif
1364 			    {(char_u *)1L, (char_u *)0L}},
1365     {"lazyredraw",  "lz",   P_BOOL|P_VI_DEF,
1366 			    (char_u *)&p_lz, PV_NONE,
1367 			    {(char_u *)FALSE, (char_u *)0L}},
1368     {"linebreak",   "lbr",  P_BOOL|P_VI_DEF|P_RWIN,
1369 #ifdef FEAT_LINEBREAK
1370 			    (char_u *)VAR_WIN, PV_LBR,
1371 #else
1372 			    (char_u *)NULL, PV_NONE,
1373 #endif
1374 			    {(char_u *)FALSE, (char_u *)0L}},
1375     {"lines",	    NULL,   P_NUM|P_NODEFAULT|P_NO_MKRC|P_VI_DEF|P_RCLR,
1376 			    (char_u *)&Rows, PV_NONE,
1377 			    {
1378 #if defined(MSDOS) || defined(WIN3264) || defined(OS2)
1379 			    (char_u *)25L,
1380 #else
1381 			    (char_u *)24L,
1382 #endif
1383 					    (char_u *)0L}},
1384     {"linespace",   "lsp",  P_NUM|P_VI_DEF|P_RCLR,
1385 #ifdef FEAT_GUI
1386 			    (char_u *)&p_linespace, PV_NONE,
1387 #else
1388 			    (char_u *)NULL, PV_NONE,
1389 #endif
1390 #ifdef FEAT_GUI_W32
1391 			    {(char_u *)1L, (char_u *)0L}
1392 #else
1393 			    {(char_u *)0L, (char_u *)0L}
1394 #endif
1395 			    },
1396     {"lisp",	    NULL,   P_BOOL|P_VI_DEF,
1397 #ifdef FEAT_LISP
1398 			    (char_u *)&p_lisp, PV_LISP,
1399 #else
1400 			    (char_u *)NULL, PV_NONE,
1401 #endif
1402 			    {(char_u *)FALSE, (char_u *)0L}},
1403     {"lispwords",   "lw",   P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1404 #ifdef FEAT_LISP
1405 			    (char_u *)&p_lispwords, PV_NONE,
1406 			    {(char_u *)LISPWORD_VALUE, (char_u *)0L}
1407 #else
1408 			    (char_u *)NULL, PV_NONE,
1409 			    {(char_u *)"", (char_u *)0L}
1410 #endif
1411 			    },
1412     {"list",	    NULL,   P_BOOL|P_VI_DEF|P_RWIN,
1413 			    (char_u *)VAR_WIN, PV_LIST,
1414 			    {(char_u *)FALSE, (char_u *)0L}},
1415     {"listchars",   "lcs",  P_STRING|P_VI_DEF|P_RALL|P_COMMA|P_NODUP,
1416 			    (char_u *)&p_lcs, PV_NONE,
1417 			    {(char_u *)"eol:$", (char_u *)0L}},
1418     {"loadplugins", "lpl",  P_BOOL|P_VI_DEF,
1419 			    (char_u *)&p_lpl, PV_NONE,
1420 			    {(char_u *)TRUE, (char_u *)0L}},
1421     {"magic",	    NULL,   P_BOOL|P_VI_DEF,
1422 			    (char_u *)&p_magic, PV_NONE,
1423 			    {(char_u *)TRUE, (char_u *)0L}},
1424     {"makeef",	    "mef",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1425 #ifdef FEAT_QUICKFIX
1426 			    (char_u *)&p_mef, PV_NONE,
1427 			    {(char_u *)"", (char_u *)0L}
1428 #else
1429 			    (char_u *)NULL, PV_NONE,
1430 			    {(char_u *)NULL, (char_u *)0L}
1431 #endif
1432 			    },
1433     {"makeprg",	    "mp",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1434 #ifdef FEAT_QUICKFIX
1435 			    (char_u *)&p_mp, OPT_BOTH(PV_MP),
1436 # ifdef VMS
1437 			    {(char_u *)"MMS", (char_u *)0L}
1438 # else
1439 			    {(char_u *)"make", (char_u *)0L}
1440 # endif
1441 #else
1442 			    (char_u *)NULL, PV_NONE,
1443 			    {(char_u *)NULL, (char_u *)0L}
1444 #endif
1445 			    },
1446     {"matchpairs",  "mps",  P_STRING|P_ALLOCED|P_VI_DEF|P_COMMA|P_NODUP,
1447 			    (char_u *)&p_mps, PV_MPS,
1448 			    {(char_u *)"(:),{:},[:]", (char_u *)0L}},
1449     {"matchtime",   "mat",  P_NUM|P_VI_DEF,
1450 			    (char_u *)&p_mat, PV_NONE,
1451 			    {(char_u *)5L, (char_u *)0L}},
1452     {"maxfuncdepth", "mfd", P_NUM|P_VI_DEF,
1453 #ifdef FEAT_EVAL
1454 			    (char_u *)&p_mfd, PV_NONE,
1455 #else
1456 			    (char_u *)NULL, PV_NONE,
1457 #endif
1458 			    {(char_u *)100L, (char_u *)0L}},
1459     {"maxmapdepth", "mmd",  P_NUM|P_VI_DEF,
1460 			    (char_u *)&p_mmd, PV_NONE,
1461 			    {(char_u *)1000L, (char_u *)0L}},
1462     {"maxmem",	    "mm",   P_NUM|P_VI_DEF,
1463 			    (char_u *)&p_mm, PV_NONE,
1464 			    {(char_u *)DFLT_MAXMEM, (char_u *)0L}},
1465     {"maxmemtot",   "mmt",  P_NUM|P_VI_DEF,
1466 			    (char_u *)&p_mmt, PV_NONE,
1467 			    {(char_u *)DFLT_MAXMEMTOT, (char_u *)0L}},
1468     {"menuitems",   "mis",  P_NUM|P_VI_DEF,
1469 #ifdef FEAT_MENU
1470 			    (char_u *)&p_mis, PV_NONE,
1471 #else
1472 			    (char_u *)NULL, PV_NONE,
1473 #endif
1474 			    {(char_u *)25L, (char_u *)0L}},
1475     {"mesg",	    NULL,   P_BOOL|P_VI_DEF,
1476 			    (char_u *)NULL, PV_NONE,
1477 			    {(char_u *)FALSE, (char_u *)0L}},
1478     {"modeline",    "ml",   P_BOOL|P_VIM,
1479 			    (char_u *)&p_ml, PV_ML,
1480 			    {(char_u *)FALSE, (char_u *)TRUE}},
1481     {"modelines",   "mls",  P_NUM|P_VI_DEF,
1482 			    (char_u *)&p_mls, PV_NONE,
1483 			    {(char_u *)5L, (char_u *)0L}},
1484     {"modifiable",  "ma",   P_BOOL|P_VI_DEF|P_NOGLOB,
1485 			    (char_u *)&p_ma, PV_MA,
1486 			    {(char_u *)TRUE, (char_u *)0L}},
1487     {"modified",    "mod",  P_BOOL|P_NO_MKRC|P_VI_DEF|P_RSTAT,
1488 			    (char_u *)&p_mod, PV_MOD,
1489 			    {(char_u *)FALSE, (char_u *)0L}},
1490     {"more",	    NULL,   P_BOOL|P_VIM,
1491 			    (char_u *)&p_more, PV_NONE,
1492 			    {(char_u *)FALSE, (char_u *)TRUE}},
1493     {"mouse",	    NULL,   P_STRING|P_VI_DEF|P_FLAGLIST,
1494 			    (char_u *)&p_mouse, PV_NONE,
1495 			    {
1496 #if defined(MSDOS) || defined(WIN3264)
1497 				(char_u *)"a",
1498 #else
1499 				(char_u *)"",
1500 #endif
1501 				(char_u *)0L}},
1502     {"mousefocus",   "mousef", P_BOOL|P_VI_DEF,
1503 #ifdef FEAT_GUI
1504 			    (char_u *)&p_mousef, PV_NONE,
1505 #else
1506 			    (char_u *)NULL, PV_NONE,
1507 #endif
1508 			    {(char_u *)FALSE, (char_u *)0L}},
1509     {"mousehide",   "mh",   P_BOOL|P_VI_DEF,
1510 #ifdef FEAT_GUI
1511 			    (char_u *)&p_mh, PV_NONE,
1512 #else
1513 			    (char_u *)NULL, PV_NONE,
1514 #endif
1515 			    {(char_u *)TRUE, (char_u *)0L}},
1516     {"mousemodel",  "mousem", P_STRING|P_VI_DEF,
1517 			    (char_u *)&p_mousem, PV_NONE,
1518 			    {
1519 #if defined(MSDOS) || defined(MSWIN)
1520 				(char_u *)"popup",
1521 #else
1522 # if defined(MACOS)
1523 				(char_u *)"popup_setpos",
1524 # else
1525 				(char_u *)"extend",
1526 # endif
1527 #endif
1528 				(char_u *)0L}},
1529     {"mouseshape",  "mouses",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1530 #ifdef FEAT_MOUSESHAPE
1531 			    (char_u *)&p_mouseshape, PV_NONE,
1532 			    {(char_u *)"i-r:beam,s:updown,sd:udsizing,vs:leftright,vd:lrsizing,m:no,ml:up-arrow,v:rightup-arrow", (char_u *)0L}
1533 #else
1534 			    (char_u *)NULL, PV_NONE,
1535 			    {(char_u *)NULL, (char_u *)0L}
1536 #endif
1537 			    },
1538     {"mousetime",   "mouset",	P_NUM|P_VI_DEF,
1539 			    (char_u *)&p_mouset, PV_NONE,
1540 			    {(char_u *)500L, (char_u *)0L}},
1541     {"mzquantum",  "mzq",   P_NUM,
1542 #ifdef FEAT_MZSCHEME
1543 			    (char_u *)&p_mzq, PV_NONE,
1544 #else
1545 			    (char_u *)NULL, PV_NONE,
1546 #endif
1547 			    {(char_u *)100L, (char_u *)100L}},
1548     {"novice",	    NULL,   P_BOOL|P_VI_DEF,
1549 			    (char_u *)NULL, PV_NONE,
1550 			    {(char_u *)FALSE, (char_u *)0L}},
1551     {"nrformats",   "nf",   P_STRING|P_ALLOCED|P_VI_DEF|P_COMMA|P_NODUP,
1552 			    (char_u *)&p_nf, PV_NF,
1553 			    {(char_u *)"octal,hex", (char_u *)0L}},
1554     {"number",	    "nu",   P_BOOL|P_VI_DEF|P_RWIN,
1555 			    (char_u *)VAR_WIN, PV_NU,
1556 			    {(char_u *)FALSE, (char_u *)0L}},
1557     {"numberwidth", "nuw",  P_NUM|P_RWIN|P_VIM,
1558 #ifdef FEAT_LINEBREAK
1559 			    (char_u *)VAR_WIN, PV_NUW,
1560 #else
1561 			    (char_u *)NULL, PV_NONE,
1562 #endif
1563 			    {(char_u *)8L, (char_u *)4L}},
1564     {"open",	    NULL,   P_BOOL|P_VI_DEF,
1565 			    (char_u *)NULL, PV_NONE,
1566 			    {(char_u *)FALSE, (char_u *)0L}},
1567     {"optimize",    "opt",  P_BOOL|P_VI_DEF,
1568 			    (char_u *)NULL, PV_NONE,
1569 			    {(char_u *)FALSE, (char_u *)0L}},
1570     {"osfiletype",  "oft",  P_STRING|P_ALLOCED|P_VI_DEF,
1571 #ifdef FEAT_OSFILETYPE
1572 			    (char_u *)&p_oft, PV_OFT,
1573 			    {(char_u *)DFLT_OFT, (char_u *)0L}
1574 #else
1575 			    (char_u *)NULL, PV_NONE,
1576 			    {(char_u *)0L, (char_u *)0L}
1577 #endif
1578 			    },
1579     {"paragraphs",  "para", P_STRING|P_VI_DEF,
1580 			    (char_u *)&p_para, PV_NONE,
1581 			    {(char_u *)"IPLPPPQPP LIpplpipbp", (char_u *)0L}},
1582     {"paste",	    NULL,   P_BOOL|P_VI_DEF,
1583 			    (char_u *)&p_paste, PV_NONE,
1584 			    {(char_u *)FALSE, (char_u *)0L}},
1585     {"pastetoggle", "pt",   P_STRING|P_VI_DEF,
1586 			    (char_u *)&p_pt, PV_NONE,
1587 			    {(char_u *)"", (char_u *)0L}},
1588     {"patchexpr",   "pex",  P_STRING|P_VI_DEF|P_SECURE,
1589 #if defined(FEAT_DIFF) && defined(FEAT_EVAL)
1590 			    (char_u *)&p_pex, PV_NONE,
1591 			    {(char_u *)"", (char_u *)0L}
1592 #else
1593 			    (char_u *)NULL, PV_NONE,
1594 			    {(char_u *)0L, (char_u *)0L}
1595 #endif
1596 			    },
1597     {"patchmode",   "pm",   P_STRING|P_VI_DEF,
1598 			    (char_u *)&p_pm, PV_NONE,
1599 			    {(char_u *)"", (char_u *)0L}},
1600     {"path",	    "pa",   P_STRING|P_EXPAND|P_VI_DEF|P_COMMA|P_NODUP,
1601 			    (char_u *)&p_path, OPT_BOTH(PV_PATH),
1602 			    {
1603 #if defined AMIGA || defined MSDOS || defined MSWIN
1604 			    (char_u *)".,,",
1605 #else
1606 # if defined(__EMX__)
1607 			    (char_u *)".,/emx/include,,",
1608 # else /* Unix, probably */
1609 			    (char_u *)".,/usr/include,,",
1610 # endif
1611 #endif
1612 				(char_u *)0L}},
1613     {"preserveindent", "pi", P_BOOL|P_VI_DEF|P_VIM,
1614 			    (char_u *)&p_pi, PV_PI,
1615 			    {(char_u *)FALSE, (char_u *)0L}},
1616     {"previewheight", "pvh", P_NUM|P_VI_DEF,
1617 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
1618 			    (char_u *)&p_pvh, PV_NONE,
1619 #else
1620 			    (char_u *)NULL, PV_NONE,
1621 #endif
1622 			    {(char_u *)12L, (char_u *)0L}},
1623     {"previewwindow", "pvw", P_BOOL|P_VI_DEF|P_RSTAT|P_NOGLOB,
1624 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
1625 			    (char_u *)VAR_WIN, PV_PVW,
1626 #else
1627 			    (char_u *)NULL, PV_NONE,
1628 #endif
1629 			    {(char_u *)FALSE, (char_u *)0L}},
1630     {"printdevice", "pdev", P_STRING|P_VI_DEF,
1631 #ifdef FEAT_PRINTER
1632 			    (char_u *)&p_pdev, PV_NONE,
1633 			    {(char_u *)"", (char_u *)0L}
1634 #else
1635 			    (char_u *)NULL, PV_NONE,
1636 			    {(char_u *)NULL, (char_u *)0L}
1637 #endif
1638 			    },
1639     {"printencoding", "penc", P_STRING|P_VI_DEF,
1640 #ifdef FEAT_POSTSCRIPT
1641 			    (char_u *)&p_penc, PV_NONE,
1642 			    {(char_u *)"", (char_u *)0L}
1643 #else
1644 			    (char_u *)NULL, PV_NONE,
1645 			    {(char_u *)NULL, (char_u *)0L}
1646 #endif
1647 			    },
1648     {"printexpr", "pexpr",  P_STRING|P_VI_DEF,
1649 #ifdef FEAT_POSTSCRIPT
1650 			    (char_u *)&p_pexpr, PV_NONE,
1651 			    {(char_u *)"", (char_u *)0L}
1652 #else
1653 			    (char_u *)NULL, PV_NONE,
1654 			    {(char_u *)NULL, (char_u *)0L}
1655 #endif
1656 			    },
1657     {"printfont", "pfn",    P_STRING|P_VI_DEF,
1658 #ifdef FEAT_PRINTER
1659 			    (char_u *)&p_pfn, PV_NONE,
1660 			    {
1661 # ifdef MSWIN
1662 				(char_u *)"Courier_New:h10",
1663 # else
1664 				(char_u *)"courier",
1665 # endif
1666 				(char_u *)0L}
1667 #else
1668 			    (char_u *)NULL, PV_NONE,
1669 			    {(char_u *)NULL, (char_u *)0L}
1670 #endif
1671 			    },
1672     {"printheader", "pheader",  P_STRING|P_VI_DEF|P_GETTEXT,
1673 #ifdef FEAT_PRINTER
1674 			    (char_u *)&p_header, PV_NONE,
1675 			    {(char_u *)N_("%<%f%h%m%=Page %N"), (char_u *)0L}
1676 #else
1677 			    (char_u *)NULL, PV_NONE,
1678 			    {(char_u *)NULL, (char_u *)0L}
1679 #endif
1680 			    },
1681    {"printmbcharset", "pmbcs",  P_STRING|P_VI_DEF,
1682 #if defined(FEAT_POSTSCRIPT) && defined(FEAT_MBYTE)
1683 			    (char_u *)&p_pmcs, PV_NONE,
1684 			    {(char_u *)"", (char_u *)0L}
1685 #else
1686 			    (char_u *)NULL, PV_NONE,
1687 			    {(char_u *)NULL, (char_u *)0L}
1688 #endif
1689 			    },
1690     {"printmbfont", "pmbfn",  P_STRING|P_VI_DEF,
1691 #if defined(FEAT_POSTSCRIPT) && defined(FEAT_MBYTE)
1692 			    (char_u *)&p_pmfn, PV_NONE,
1693 			    {(char_u *)"", (char_u *)0L}
1694 #else
1695 			    (char_u *)NULL, PV_NONE,
1696 			    {(char_u *)NULL, (char_u *)0L}
1697 #endif
1698 			    },
1699     {"printoptions", "popt", P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1700 #ifdef FEAT_PRINTER
1701 			    (char_u *)&p_popt, PV_NONE,
1702 			    {(char_u *)"", (char_u *)0L}
1703 #else
1704 			    (char_u *)NULL, PV_NONE,
1705 			    {(char_u *)NULL, (char_u *)0L}
1706 #endif
1707 			    },
1708     {"prompt",	    NULL,   P_BOOL|P_VI_DEF,
1709 			    (char_u *)NULL, PV_NONE,
1710 			    {(char_u *)FALSE, (char_u *)0L}},
1711     {"quoteescape", "qe",   P_STRING|P_ALLOCED|P_VI_DEF,
1712 #ifdef FEAT_TEXTOBJ
1713 			    (char_u *)&p_qe, PV_QE,
1714 			    {(char_u *)"\\", (char_u *)0L}
1715 #else
1716 			    (char_u *)NULL, PV_NONE,
1717 			    {(char_u *)NULL, (char_u *)0L}
1718 #endif
1719 			    },
1720     {"readonly",    "ro",   P_BOOL|P_VI_DEF|P_RSTAT|P_NOGLOB,
1721 			    (char_u *)&p_ro, PV_RO,
1722 			    {(char_u *)FALSE, (char_u *)0L}},
1723     {"redraw",	    NULL,   P_BOOL|P_VI_DEF,
1724 			    (char_u *)NULL, PV_NONE,
1725 			    {(char_u *)FALSE, (char_u *)0L}},
1726     {"remap",	    NULL,   P_BOOL|P_VI_DEF,
1727 			    (char_u *)&p_remap, PV_NONE,
1728 			    {(char_u *)TRUE, (char_u *)0L}},
1729     {"report",	    NULL,   P_NUM|P_VI_DEF,
1730 			    (char_u *)&p_report, PV_NONE,
1731 			    {(char_u *)2L, (char_u *)0L}},
1732     {"restorescreen", "rs", P_BOOL|P_VI_DEF,
1733 #ifdef WIN3264
1734 			    (char_u *)&p_rs, PV_NONE,
1735 #else
1736 			    (char_u *)NULL, PV_NONE,
1737 #endif
1738 			    {(char_u *)TRUE, (char_u *)0L}},
1739     {"revins",	    "ri",   P_BOOL|P_VI_DEF|P_VIM,
1740 #ifdef FEAT_RIGHTLEFT
1741 			    (char_u *)&p_ri, PV_NONE,
1742 #else
1743 			    (char_u *)NULL, PV_NONE,
1744 #endif
1745 			    {(char_u *)FALSE, (char_u *)0L}},
1746     {"rightleft",   "rl",   P_BOOL|P_VI_DEF|P_RWIN,
1747 #ifdef FEAT_RIGHTLEFT
1748 			    (char_u *)VAR_WIN, PV_RL,
1749 #else
1750 			    (char_u *)NULL, PV_NONE,
1751 #endif
1752 			    {(char_u *)FALSE, (char_u *)0L}},
1753     {"rightleftcmd", "rlc", P_STRING|P_ALLOCED|P_VI_DEF|P_RWIN,
1754 #ifdef FEAT_RIGHTLEFT
1755 			    (char_u *)VAR_WIN, PV_RLC,
1756 			    {(char_u *)"search", (char_u *)NULL}
1757 #else
1758 			    (char_u *)NULL, PV_NONE,
1759 			    {(char_u *)NULL, (char_u *)0L}
1760 #endif
1761 			    },
1762     {"ruler",	    "ru",   P_BOOL|P_VI_DEF|P_VIM|P_RSTAT,
1763 #ifdef FEAT_CMDL_INFO
1764 			    (char_u *)&p_ru, PV_NONE,
1765 #else
1766 			    (char_u *)NULL, PV_NONE,
1767 #endif
1768 			    {(char_u *)FALSE, (char_u *)0L}},
1769     {"rulerformat", "ruf",  P_STRING|P_VI_DEF|P_ALLOCED|P_RSTAT,
1770 #ifdef FEAT_STL_OPT
1771 			    (char_u *)&p_ruf, PV_NONE,
1772 #else
1773 			    (char_u *)NULL, PV_NONE,
1774 #endif
1775 			    {(char_u *)"", (char_u *)0L}},
1776     {"runtimepath", "rtp",  P_STRING|P_VI_DEF|P_EXPAND|P_COMMA|P_NODUP|P_SECURE,
1777 			    (char_u *)&p_rtp, PV_NONE,
1778 			    {(char_u *)DFLT_RUNTIMEPATH, (char_u *)0L}},
1779     {"scroll",	    "scr",  P_NUM|P_NO_MKRC|P_VI_DEF,
1780 			    (char_u *)VAR_WIN, PV_SCROLL,
1781 			    {(char_u *)12L, (char_u *)0L}},
1782     {"scrollbind",  "scb",  P_BOOL|P_VI_DEF,
1783 #ifdef FEAT_SCROLLBIND
1784 			    (char_u *)VAR_WIN, PV_SCBIND,
1785 #else
1786 			    (char_u *)NULL, PV_NONE,
1787 #endif
1788 			    {(char_u *)FALSE, (char_u *)0L}},
1789     {"scrolljump",  "sj",   P_NUM|P_VI_DEF|P_VIM,
1790 			    (char_u *)&p_sj, PV_NONE,
1791 			    {(char_u *)1L, (char_u *)0L}},
1792     {"scrolloff",   "so",   P_NUM|P_VI_DEF|P_VIM|P_RALL,
1793 			    (char_u *)&p_so, PV_NONE,
1794 			    {(char_u *)0L, (char_u *)0L}},
1795     {"scrollopt",   "sbo",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1796 #ifdef FEAT_SCROLLBIND
1797 			    (char_u *)&p_sbo, PV_NONE,
1798 			    {(char_u *)"ver,jump", (char_u *)0L}
1799 #else
1800 			    (char_u *)NULL, PV_NONE,
1801 			    {(char_u *)0L, (char_u *)0L}
1802 #endif
1803 			    },
1804     {"sections",    "sect", P_STRING|P_VI_DEF,
1805 			    (char_u *)&p_sections, PV_NONE,
1806 			    {(char_u *)"SHNHH HUnhsh", (char_u *)0L}},
1807     {"secure",	    NULL,   P_BOOL|P_VI_DEF|P_SECURE,
1808 			    (char_u *)&p_secure, PV_NONE,
1809 			    {(char_u *)FALSE, (char_u *)0L}},
1810     {"selection",   "sel",  P_STRING|P_VI_DEF,
1811 #ifdef FEAT_VISUAL
1812 			    (char_u *)&p_sel, PV_NONE,
1813 #else
1814 			    (char_u *)NULL, PV_NONE,
1815 #endif
1816 			    {(char_u *)"inclusive", (char_u *)0L}},
1817     {"selectmode",  "slm",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1818 #ifdef FEAT_VISUAL
1819 			    (char_u *)&p_slm, PV_NONE,
1820 #else
1821 			    (char_u *)NULL, PV_NONE,
1822 #endif
1823 			    {(char_u *)"", (char_u *)0L}},
1824     {"sessionoptions", "ssop", P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
1825 #ifdef FEAT_SESSION
1826 			    (char_u *)&p_ssop, PV_NONE,
1827 		 {(char_u *)"blank,buffers,curdir,folds,help,options,winsize",
1828 							       (char_u *)0L}
1829 #else
1830 			    (char_u *)NULL, PV_NONE,
1831 			    {(char_u *)0L, (char_u *)0L}
1832 #endif
1833 			    },
1834     {"shell",	    "sh",   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
1835 			    (char_u *)&p_sh, PV_NONE,
1836 			    {
1837 #ifdef VMS
1838 			    (char_u *)"-",
1839 #else
1840 # if defined(MSDOS)
1841 			    (char_u *)"command",
1842 # else
1843 #  if defined(WIN16)
1844 			    (char_u *)"command.com",
1845 #  else
1846 #   if defined(WIN3264)
1847 			    (char_u *)"",	/* set in set_init_1() */
1848 #   else
1849 #    if defined(OS2)
1850 			    (char_u *)"cmd.exe",
1851 #    else
1852 #     if defined(ARCHIE)
1853 			    (char_u *)"gos",
1854 #     else
1855 			    (char_u *)"sh",
1856 #     endif
1857 #    endif
1858 #   endif
1859 #  endif
1860 # endif
1861 #endif /* VMS */
1862 				(char_u *)0L}},
1863     {"shellcmdflag","shcf", P_STRING|P_VI_DEF|P_SECURE,
1864 			    (char_u *)&p_shcf, PV_NONE,
1865 			    {
1866 #if defined(MSDOS) || defined(MSWIN)
1867 			    (char_u *)"/c",
1868 #else
1869 # if defined(OS2)
1870 			    (char_u *)"/c",
1871 # else
1872 			    (char_u *)"-c",
1873 # endif
1874 #endif
1875 				(char_u *)0L}},
1876     {"shellpipe",   "sp",   P_STRING|P_VI_DEF|P_SECURE,
1877 #ifdef FEAT_QUICKFIX
1878 			    (char_u *)&p_sp, PV_NONE,
1879 			    {
1880 #if defined(UNIX) || defined(OS2)
1881 # ifdef ARCHIE
1882 			    (char_u *)"2>",
1883 # else
1884 			    (char_u *)"| tee",
1885 # endif
1886 #else
1887 			    (char_u *)">",
1888 #endif
1889 				(char_u *)0L}
1890 #else
1891 			    (char_u *)NULL, PV_NONE,
1892 			    {(char_u *)0L, (char_u *)0L}
1893 #endif
1894     },
1895     {"shellquote",  "shq",  P_STRING|P_VI_DEF|P_SECURE,
1896 			    (char_u *)&p_shq, PV_NONE,
1897 			    {(char_u *)"", (char_u *)0L}},
1898     {"shellredir",  "srr",  P_STRING|P_VI_DEF|P_SECURE,
1899 			    (char_u *)&p_srr, PV_NONE,
1900 			    {(char_u *)">", (char_u *)0L}},
1901     {"shellslash",  "ssl",   P_BOOL|P_VI_DEF,
1902 #ifdef BACKSLASH_IN_FILENAME
1903 			    (char_u *)&p_ssl, PV_NONE,
1904 #else
1905 			    (char_u *)NULL, PV_NONE,
1906 #endif
1907 			    {(char_u *)FALSE, (char_u *)0L}},
1908     {"shelltype",   "st",   P_NUM|P_VI_DEF,
1909 #ifdef AMIGA
1910 			    (char_u *)&p_st, PV_NONE,
1911 #else
1912 			    (char_u *)NULL, PV_NONE,
1913 #endif
1914 			    {(char_u *)0L, (char_u *)0L}},
1915     {"shellxquote", "sxq",  P_STRING|P_VI_DEF|P_SECURE,
1916 			    (char_u *)&p_sxq, PV_NONE,
1917 			    {
1918 #if defined(UNIX) && defined(USE_SYSTEM) && !defined(__EMX__)
1919 			    (char_u *)"\"",
1920 #else
1921 			    (char_u *)"",
1922 #endif
1923 				(char_u *)0L}},
1924     {"shiftround",  "sr",   P_BOOL|P_VI_DEF|P_VIM,
1925 			    (char_u *)&p_sr, PV_NONE,
1926 			    {(char_u *)FALSE, (char_u *)0L}},
1927     {"shiftwidth",  "sw",   P_NUM|P_VI_DEF,
1928 			    (char_u *)&p_sw, PV_SW,
1929 			    {(char_u *)8L, (char_u *)0L}},
1930     {"shortmess",   "shm",  P_STRING|P_VIM|P_FLAGLIST,
1931 			    (char_u *)&p_shm, PV_NONE,
1932 			    {(char_u *)"", (char_u *)"filnxtToO"}},
1933     {"shortname",   "sn",   P_BOOL|P_VI_DEF,
1934 #ifdef SHORT_FNAME
1935 			    (char_u *)NULL, PV_NONE,
1936 #else
1937 			    (char_u *)&p_sn, PV_SN,
1938 #endif
1939 			    {(char_u *)FALSE, (char_u *)0L}},
1940     {"showbreak",   "sbr",  P_STRING|P_VI_DEF|P_RALL,
1941 #ifdef FEAT_LINEBREAK
1942 			    (char_u *)&p_sbr, PV_NONE,
1943 #else
1944 			    (char_u *)NULL, PV_NONE,
1945 #endif
1946 			    {(char_u *)"", (char_u *)0L}},
1947     {"showcmd",	    "sc",   P_BOOL|P_VIM,
1948 #ifdef FEAT_CMDL_INFO
1949 			    (char_u *)&p_sc, PV_NONE,
1950 #else
1951 			    (char_u *)NULL, PV_NONE,
1952 #endif
1953 			    {(char_u *)FALSE,
1954 #ifdef UNIX
1955 				(char_u *)FALSE
1956 #else
1957 				(char_u *)TRUE
1958 #endif
1959 				}},
1960     {"showfulltag", "sft",  P_BOOL|P_VI_DEF,
1961 			    (char_u *)&p_sft, PV_NONE,
1962 			    {(char_u *)FALSE, (char_u *)0L}},
1963     {"showmatch",   "sm",   P_BOOL|P_VI_DEF,
1964 			    (char_u *)&p_sm, PV_NONE,
1965 			    {(char_u *)FALSE, (char_u *)0L}},
1966     {"showmode",    "smd",  P_BOOL|P_VIM,
1967 			    (char_u *)&p_smd, PV_NONE,
1968 			    {(char_u *)FALSE, (char_u *)TRUE}},
1969     {"sidescroll",  "ss",   P_NUM|P_VI_DEF,
1970 			    (char_u *)&p_ss, PV_NONE,
1971 			    {(char_u *)0L, (char_u *)0L}},
1972     {"sidescrolloff", "siso", P_NUM|P_VI_DEF|P_VIM|P_RBUF,
1973 			    (char_u *)&p_siso, PV_NONE,
1974 			    {(char_u *)0L, (char_u *)0L}},
1975     {"slowopen",    "slow", P_BOOL|P_VI_DEF,
1976 			    (char_u *)NULL, PV_NONE,
1977 			    {(char_u *)FALSE, (char_u *)0L}},
1978     {"smartcase",   "scs",  P_BOOL|P_VI_DEF|P_VIM,
1979 			    (char_u *)&p_scs, PV_NONE,
1980 			    {(char_u *)FALSE, (char_u *)0L}},
1981     {"smartindent", "si",   P_BOOL|P_VI_DEF|P_VIM,
1982 #ifdef FEAT_SMARTINDENT
1983 			    (char_u *)&p_si, PV_SI,
1984 #else
1985 			    (char_u *)NULL, PV_NONE,
1986 #endif
1987 			    {(char_u *)FALSE, (char_u *)0L}},
1988     {"smarttab",    "sta",  P_BOOL|P_VI_DEF|P_VIM,
1989 			    (char_u *)&p_sta, PV_NONE,
1990 			    {(char_u *)FALSE, (char_u *)0L}},
1991     {"softtabstop", "sts",  P_NUM|P_VI_DEF|P_VIM,
1992 			    (char_u *)&p_sts, PV_STS,
1993 			    {(char_u *)0L, (char_u *)0L}},
1994     {"sourceany",   NULL,   P_BOOL|P_VI_DEF,
1995 			    (char_u *)NULL, PV_NONE,
1996 			    {(char_u *)FALSE, (char_u *)0L}},
1997     {"splitbelow",  "sb",   P_BOOL|P_VI_DEF,
1998 #ifdef FEAT_WINDOWS
1999 			    (char_u *)&p_sb, PV_NONE,
2000 #else
2001 			    (char_u *)NULL, PV_NONE,
2002 #endif
2003 			    {(char_u *)FALSE, (char_u *)0L}},
2004     {"splitright",  "spr",  P_BOOL|P_VI_DEF,
2005 #ifdef FEAT_VERTSPLIT
2006 			    (char_u *)&p_spr, PV_NONE,
2007 #else
2008 			    (char_u *)NULL, PV_NONE,
2009 #endif
2010 			    {(char_u *)FALSE, (char_u *)0L}},
2011     {"startofline", "sol",  P_BOOL|P_VI_DEF|P_VIM,
2012 			    (char_u *)&p_sol, PV_NONE,
2013 			    {(char_u *)TRUE, (char_u *)0L}},
2014     {"statusline"  ,"stl",  P_STRING|P_VI_DEF|P_ALLOCED|P_RSTAT,
2015 #ifdef FEAT_STL_OPT
2016 			    (char_u *)&p_stl, PV_NONE,
2017 #else
2018 			    (char_u *)NULL, PV_NONE,
2019 #endif
2020 			    {(char_u *)"", (char_u *)0L}},
2021     {"suffixes",    "su",   P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
2022 			    (char_u *)&p_su, PV_NONE,
2023 			    {(char_u *)".bak,~,.o,.h,.info,.swp,.obj",
2024 				(char_u *)0L}},
2025     {"suffixesadd", "sua",  P_STRING|P_VI_DEF|P_ALLOCED|P_COMMA|P_NODUP,
2026 #if defined(FEAT_SEARCHPATH)
2027 			    (char_u *)&p_sua, PV_SUA,
2028 			    {(char_u *)"", (char_u *)0L}
2029 #else
2030 			    (char_u *)NULL, PV_NONE,
2031 			    {(char_u *)0L, (char_u *)0L}
2032 #endif
2033 			    },
2034     {"swapfile",    "swf",  P_BOOL|P_VI_DEF|P_RSTAT,
2035 			    (char_u *)&p_swf, PV_SWF,
2036 			    {(char_u *)TRUE, (char_u *)0L}},
2037     {"swapsync",    "sws",  P_STRING|P_VI_DEF,
2038 			    (char_u *)&p_sws, PV_NONE,
2039 			    {(char_u *)"fsync", (char_u *)0L}},
2040     {"switchbuf",   "swb",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
2041 			    (char_u *)&p_swb, PV_NONE,
2042 			    {(char_u *)"", (char_u *)0L}},
2043     {"syntax",	    "syn",  P_STRING|P_ALLOCED|P_VI_DEF|P_NOGLOB,
2044 #ifdef FEAT_SYN_HL
2045 			    (char_u *)&p_syn, PV_SYN,
2046 			    {(char_u *)"", (char_u *)0L}
2047 #else
2048 			    (char_u *)NULL, PV_NONE,
2049 			    {(char_u *)0L, (char_u *)0L}
2050 #endif
2051 			    },
2052     {"tabstop",	    "ts",   P_NUM|P_VI_DEF|P_RBUF,
2053 			    (char_u *)&p_ts, PV_TS,
2054 			    {(char_u *)8L, (char_u *)0L}},
2055     {"tagbsearch",  "tbs",   P_BOOL|P_VI_DEF,
2056 			    (char_u *)&p_tbs, PV_NONE,
2057 #ifdef VMS	/* binary searching doesn't appear to work on VMS */
2058 			    {(char_u *)0L, (char_u *)0L}
2059 #else
2060 			    {(char_u *)TRUE, (char_u *)0L}
2061 #endif
2062 			    },
2063     {"taglength",   "tl",   P_NUM|P_VI_DEF,
2064 			    (char_u *)&p_tl, PV_NONE,
2065 			    {(char_u *)0L, (char_u *)0L}},
2066     {"tagrelative", "tr",   P_BOOL|P_VIM,
2067 			    (char_u *)&p_tr, PV_NONE,
2068 			    {(char_u *)FALSE, (char_u *)TRUE}},
2069     {"tags",	    "tag",  P_STRING|P_EXPAND|P_VI_DEF|P_COMMA|P_NODUP,
2070 			    (char_u *)&p_tags, OPT_BOTH(PV_TAGS),
2071 			    {
2072 #if defined(FEAT_EMACS_TAGS) && !defined(CASE_INSENSITIVE_FILENAME)
2073 			    (char_u *)"./tags,./TAGS,tags,TAGS",
2074 #else
2075 			    (char_u *)"./tags,tags",
2076 #endif
2077 				(char_u *)0L}},
2078     {"tagstack",    "tgst", P_BOOL|P_VI_DEF,
2079 			    (char_u *)&p_tgst, PV_NONE,
2080 			    {(char_u *)TRUE, (char_u *)0L}},
2081     {"term",	    NULL,   P_STRING|P_EXPAND|P_NODEFAULT|P_NO_MKRC|P_VI_DEF|P_RALL,
2082 			    (char_u *)&T_NAME, PV_NONE,
2083 			    {(char_u *)"", (char_u *)0L}},
2084     {"termbidi", "tbidi",   P_BOOL|P_VI_DEF,
2085 #ifdef FEAT_ARABIC
2086 			    (char_u *)&p_tbidi, PV_NONE,
2087 #else
2088 			    (char_u *)NULL, PV_NONE,
2089 #endif
2090 			    {(char_u *)FALSE, (char_u *)0L}},
2091     {"termencoding", "tenc", P_STRING|P_VI_DEF|P_RCLR,
2092 #ifdef FEAT_MBYTE
2093 			    (char_u *)&p_tenc, PV_NONE,
2094 			    {(char_u *)"", (char_u *)0L}
2095 #else
2096 			    (char_u *)NULL, PV_NONE,
2097 			    {(char_u *)0L, (char_u *)0L}
2098 #endif
2099 			    },
2100     {"terse",	    NULL,   P_BOOL|P_VI_DEF,
2101 			    (char_u *)&p_terse, PV_NONE,
2102 			    {(char_u *)FALSE, (char_u *)0L}},
2103     {"textauto",    "ta",   P_BOOL|P_VIM,
2104 			    (char_u *)&p_ta, PV_NONE,
2105 			    {(char_u *)DFLT_TEXTAUTO, (char_u *)TRUE}},
2106     {"textmode",    "tx",   P_BOOL|P_VI_DEF|P_NO_MKRC,
2107 			    (char_u *)&p_tx, PV_TX,
2108 			    {
2109 #ifdef USE_CRNL
2110 			    (char_u *)TRUE,
2111 #else
2112 			    (char_u *)FALSE,
2113 #endif
2114 				(char_u *)0L}},
2115     {"textwidth",   "tw",   P_NUM|P_VI_DEF|P_VIM,
2116 			    (char_u *)&p_tw, PV_TW,
2117 			    {(char_u *)0L, (char_u *)0L}},
2118     {"thesaurus",   "tsr",  P_STRING|P_EXPAND|P_VI_DEF|P_COMMA|P_NODUP,
2119 #ifdef FEAT_INS_EXPAND
2120 			    (char_u *)&p_tsr, OPT_BOTH(PV_TSR),
2121 #else
2122 			    (char_u *)NULL, PV_NONE,
2123 #endif
2124 			    {(char_u *)"", (char_u *)0L}},
2125     {"tildeop",	    "top",  P_BOOL|P_VI_DEF|P_VIM,
2126 			    (char_u *)&p_to, PV_NONE,
2127 			    {(char_u *)FALSE, (char_u *)0L}},
2128     {"timeout",	    "to",   P_BOOL|P_VI_DEF,
2129 			    (char_u *)&p_timeout, PV_NONE,
2130 			    {(char_u *)TRUE, (char_u *)0L}},
2131     {"timeoutlen",  "tm",   P_NUM|P_VI_DEF,
2132 			    (char_u *)&p_tm, PV_NONE,
2133 			    {(char_u *)1000L, (char_u *)0L}},
2134     {"title",	    NULL,   P_BOOL|P_VI_DEF,
2135 #ifdef FEAT_TITLE
2136 			    (char_u *)&p_title, PV_NONE,
2137 #else
2138 			    (char_u *)NULL, PV_NONE,
2139 #endif
2140 			    {(char_u *)FALSE, (char_u *)0L}},
2141     {"titlelen",    NULL,   P_NUM|P_VI_DEF,
2142 #ifdef FEAT_TITLE
2143 			    (char_u *)&p_titlelen, PV_NONE,
2144 #else
2145 			    (char_u *)NULL, PV_NONE,
2146 #endif
2147 			    {(char_u *)85L, (char_u *)0L}},
2148     {"titleold",    NULL,   P_STRING|P_VI_DEF|P_GETTEXT,
2149 #ifdef FEAT_TITLE
2150 			    (char_u *)&p_titleold, PV_NONE,
2151 			    {(char_u *)N_("Thanks for flying Vim"),
2152 							       (char_u *)0L}
2153 #else
2154 			    (char_u *)NULL, PV_NONE,
2155 			    {(char_u *)0L, (char_u *)0L}
2156 #endif
2157 			    },
2158     {"titlestring", NULL,   P_STRING|P_VI_DEF,
2159 #ifdef FEAT_TITLE
2160 			    (char_u *)&p_titlestring, PV_NONE,
2161 #else
2162 			    (char_u *)NULL, PV_NONE,
2163 #endif
2164 			    {(char_u *)"", (char_u *)0L}},
2165 #if defined(FEAT_TOOLBAR) && !defined(FEAT_GUI_W32)
2166     {"toolbar",     "tb",   P_STRING|P_COMMA|P_VI_DEF|P_NODUP,
2167 			    (char_u *)&p_toolbar, PV_NONE,
2168 			    {(char_u *)"icons,tooltips", (char_u *)0L}},
2169 #endif
2170 #if defined(FEAT_TOOLBAR) && defined(FEAT_GUI_GTK) && defined(HAVE_GTK2)
2171     {"toolbariconsize",	"tbis", P_STRING|P_VI_DEF,
2172 			    (char_u *)&p_tbis, PV_NONE,
2173 			    {(char_u *)"small", (char_u *)0L}},
2174 #endif
2175     {"ttimeout",    NULL,   P_BOOL|P_VI_DEF|P_VIM,
2176 			    (char_u *)&p_ttimeout, PV_NONE,
2177 			    {(char_u *)FALSE, (char_u *)0L}},
2178     {"ttimeoutlen", "ttm",  P_NUM|P_VI_DEF,
2179 			    (char_u *)&p_ttm, PV_NONE,
2180 			    {(char_u *)-1L, (char_u *)0L}},
2181     {"ttybuiltin",  "tbi",  P_BOOL|P_VI_DEF,
2182 			    (char_u *)&p_tbi, PV_NONE,
2183 			    {(char_u *)TRUE, (char_u *)0L}},
2184     {"ttyfast",	    "tf",   P_BOOL|P_NO_MKRC|P_VI_DEF,
2185 			    (char_u *)&p_tf, PV_NONE,
2186 			    {(char_u *)FALSE, (char_u *)0L}},
2187     {"ttymouse",    "ttym", P_STRING|P_NODEFAULT|P_NO_MKRC|P_VI_DEF,
2188 #if defined(FEAT_MOUSE) && (defined(UNIX) || defined(VMS))
2189 			    (char_u *)&p_ttym, PV_NONE,
2190 #else
2191 			    (char_u *)NULL, PV_NONE,
2192 #endif
2193 			    {(char_u *)"", (char_u *)0L}},
2194     {"ttyscroll",   "tsl",  P_NUM|P_VI_DEF,
2195 			    (char_u *)&p_ttyscroll, PV_NONE,
2196 			    {(char_u *)999L, (char_u *)0L}},
2197     {"ttytype",	    "tty",  P_STRING|P_EXPAND|P_NODEFAULT|P_NO_MKRC|P_VI_DEF|P_RALL,
2198 			    (char_u *)&T_NAME, PV_NONE,
2199 			    {(char_u *)"", (char_u *)0L}},
2200     {"undolevels",  "ul",   P_NUM|P_VI_DEF,
2201 			    (char_u *)&p_ul, PV_NONE,
2202 			    {
2203 #if defined(UNIX) || defined(WIN3264) || defined(OS2) || defined(VMS)
2204 			    (char_u *)1000L,
2205 #else
2206 			    (char_u *)100L,
2207 #endif
2208 				(char_u *)0L}},
2209     {"updatecount", "uc",   P_NUM|P_VI_DEF,
2210 			    (char_u *)&p_uc, PV_NONE,
2211 			    {(char_u *)200L, (char_u *)0L}},
2212     {"updatetime",  "ut",   P_NUM|P_VI_DEF,
2213 			    (char_u *)&p_ut, PV_NONE,
2214 			    {(char_u *)4000L, (char_u *)0L}},
2215     {"verbose",	    "vbs",  P_NUM|P_VI_DEF,
2216 			    (char_u *)&p_verbose, PV_NONE,
2217 			    {(char_u *)0L, (char_u *)0L}},
2218     {"viewdir",     "vdir", P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
2219 #ifdef FEAT_SESSION
2220 			    (char_u *)&p_vdir, PV_NONE,
2221 			    {(char_u *)DFLT_VDIR, (char_u *)0L}
2222 #else
2223 			    (char_u *)NULL, PV_NONE,
2224 			    {(char_u *)0L, (char_u *)0L}
2225 #endif
2226 			    },
2227     {"viewoptions", "vop",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
2228 #ifdef FEAT_SESSION
2229 			    (char_u *)&p_vop, PV_NONE,
2230 			    {(char_u *)"folds,options,cursor", (char_u *)0L}
2231 #else
2232 			    (char_u *)NULL, PV_NONE,
2233 			    {(char_u *)0L, (char_u *)0L}
2234 #endif
2235 			    },
2236     {"viminfo",	    "vi",   P_STRING|P_COMMA|P_NODUP|P_SECURE,
2237 #ifdef FEAT_VIMINFO
2238 			    (char_u *)&p_viminfo, PV_NONE,
2239 #if defined(MSDOS) || defined(MSWIN) || defined(OS2)
2240 			    {(char_u *)"", (char_u *)"'20,<50,s10,h,rA:,rB:"}
2241 #else
2242 # ifdef AMIGA
2243 			    {(char_u *)"",
2244 				 (char_u *)"'20,<50,s10,h,rdf0:,rdf1:,rdf2:"}
2245 # else
2246 			    {(char_u *)"", (char_u *)"'20,<50,s10,h"}
2247 # endif
2248 #endif
2249 #else
2250 			    (char_u *)NULL, PV_NONE,
2251 			    {(char_u *)0L, (char_u *)0L}
2252 #endif
2253 			    },
2254     {"virtualedit", "ve",   P_STRING|P_COMMA|P_NODUP|P_VI_DEF|P_VIM,
2255 #ifdef FEAT_VIRTUALEDIT
2256 			    (char_u *)&p_ve, PV_NONE,
2257 			    {(char_u *)"", (char_u *)""}
2258 #else
2259 			    (char_u *)NULL, PV_NONE,
2260 			    {(char_u *)0L, (char_u *)0L}
2261 #endif
2262 			    },
2263     {"visualbell",  "vb",   P_BOOL|P_VI_DEF,
2264 			    (char_u *)&p_vb, PV_NONE,
2265 			    {(char_u *)FALSE, (char_u *)0L}},
2266     {"w300",	    NULL,   P_NUM|P_VI_DEF,
2267 			    (char_u *)NULL, PV_NONE,
2268 			    {(char_u *)0L, (char_u *)0L}},
2269     {"w1200",	    NULL,   P_NUM|P_VI_DEF,
2270 			    (char_u *)NULL, PV_NONE,
2271 			    {(char_u *)0L, (char_u *)0L}},
2272     {"w9600",	    NULL,   P_NUM|P_VI_DEF,
2273 			    (char_u *)NULL, PV_NONE,
2274 			    {(char_u *)0L, (char_u *)0L}},
2275     {"warn",	    NULL,   P_BOOL|P_VI_DEF,
2276 			    (char_u *)&p_warn, PV_NONE,
2277 			    {(char_u *)TRUE, (char_u *)0L}},
2278     {"weirdinvert", "wiv",  P_BOOL|P_VI_DEF|P_RCLR,
2279 			    (char_u *)&p_wiv, PV_NONE,
2280 			    {(char_u *)FALSE, (char_u *)0L}},
2281     {"whichwrap",   "ww",   P_STRING|P_VIM|P_COMMA|P_FLAGLIST,
2282 			    (char_u *)&p_ww, PV_NONE,
2283 			    {(char_u *)"", (char_u *)"b,s"}},
2284     {"wildchar",    "wc",   P_NUM|P_VIM,
2285 			    (char_u *)&p_wc, PV_NONE,
2286 			    {(char_u *)(long)Ctrl_E, (char_u *)(long)TAB}},
2287     {"wildcharm",   "wcm",   P_NUM|P_VI_DEF,
2288 			    (char_u *)&p_wcm, PV_NONE,
2289 			    {(char_u *)0L, (char_u *)0L}},
2290     {"wildignore",  "wig",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
2291 #ifdef FEAT_WILDIGN
2292 			    (char_u *)&p_wig, PV_NONE,
2293 #else
2294 			    (char_u *)NULL, PV_NONE,
2295 #endif
2296 			    {(char_u *)"", (char_u *)0L}},
2297     {"wildmenu",    "wmnu", P_BOOL|P_VI_DEF,
2298 #ifdef FEAT_WILDMENU
2299 			    (char_u *)&p_wmnu, PV_NONE,
2300 #else
2301 			    (char_u *)NULL, PV_NONE,
2302 #endif
2303 			    {(char_u *)FALSE, (char_u *)0L}},
2304     {"wildmode",    "wim",  P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
2305 			    (char_u *)&p_wim, PV_NONE,
2306 			    {(char_u *)"full", (char_u *)0L}},
2307     {"winaltkeys",  "wak",  P_STRING|P_VI_DEF,
2308 #ifdef FEAT_WAK
2309 			    (char_u *)&p_wak, PV_NONE,
2310 			    {(char_u *)"menu", (char_u *)0L}
2311 #else
2312 			    (char_u *)NULL, PV_NONE,
2313 			    {(char_u *)NULL, (char_u *)0L}
2314 #endif
2315 			    },
2316     {"window",	    "wi",   P_NUM|P_VI_DEF,
2317 			    (char_u *)NULL, PV_NONE,
2318 			    {(char_u *)0L, (char_u *)0L}},
2319     {"winheight",   "wh",   P_NUM|P_VI_DEF,
2320 #ifdef FEAT_WINDOWS
2321 			    (char_u *)&p_wh, PV_NONE,
2322 #else
2323 			    (char_u *)NULL, PV_NONE,
2324 #endif
2325 			    {(char_u *)1L, (char_u *)0L}},
2326     {"winfixheight", "wfh", P_BOOL|P_VI_DEF|P_RSTAT,
2327 #if defined(FEAT_WINDOWS)
2328 			    (char_u *)VAR_WIN, PV_WFH,
2329 #else
2330 			    (char_u *)NULL, PV_NONE,
2331 #endif
2332 			    {(char_u *)FALSE, (char_u *)0L}},
2333     {"winminheight", "wmh", P_NUM|P_VI_DEF,
2334 #ifdef FEAT_WINDOWS
2335 			    (char_u *)&p_wmh, PV_NONE,
2336 #else
2337 			    (char_u *)NULL, PV_NONE,
2338 #endif
2339 			    {(char_u *)1L, (char_u *)0L}},
2340     {"winminwidth", "wmw", P_NUM|P_VI_DEF,
2341 #ifdef FEAT_VERTSPLIT
2342 			    (char_u *)&p_wmw, PV_NONE,
2343 #else
2344 			    (char_u *)NULL, PV_NONE,
2345 #endif
2346 			    {(char_u *)1L, (char_u *)0L}},
2347     {"winwidth",   "wiw",   P_NUM|P_VI_DEF,
2348 #ifdef FEAT_VERTSPLIT
2349 			    (char_u *)&p_wiw, PV_NONE,
2350 #else
2351 			    (char_u *)NULL, PV_NONE,
2352 #endif
2353 			    {(char_u *)20L, (char_u *)0L}},
2354     {"wrap",	    NULL,   P_BOOL|P_VI_DEF|P_RWIN,
2355 			    (char_u *)VAR_WIN, PV_WRAP,
2356 			    {(char_u *)TRUE, (char_u *)0L}},
2357     {"wrapmargin",  "wm",   P_NUM|P_VI_DEF,
2358 			    (char_u *)&p_wm, PV_WM,
2359 			    {(char_u *)0L, (char_u *)0L}},
2360     {"wrapscan",    "ws",   P_BOOL|P_VI_DEF,
2361 			    (char_u *)&p_ws, PV_NONE,
2362 			    {(char_u *)TRUE, (char_u *)0L}},
2363     {"write",	    NULL,   P_BOOL|P_VI_DEF,
2364 			    (char_u *)&p_write, PV_NONE,
2365 			    {(char_u *)TRUE, (char_u *)0L}},
2366     {"writeany",    "wa",   P_BOOL|P_VI_DEF,
2367 			    (char_u *)&p_wa, PV_NONE,
2368 			    {(char_u *)FALSE, (char_u *)0L}},
2369     {"writebackup", "wb",   P_BOOL|P_VI_DEF|P_VIM,
2370 			    (char_u *)&p_wb, PV_NONE,
2371 			    {
2372 #ifdef FEAT_WRITEBACKUP
2373 			    (char_u *)TRUE,
2374 #else
2375 			    (char_u *)FALSE,
2376 #endif
2377 				(char_u *)0L}},
2378     {"writedelay",  "wd",   P_NUM|P_VI_DEF,
2379 			    (char_u *)&p_wd, PV_NONE,
2380 			    {(char_u *)0L, (char_u *)0L}},
2381 
2382 /* terminal output codes */
2383 #define p_term(sss, vvv)   {sss, NULL, P_STRING|P_VI_DEF|P_RALL, \
2384 			    (char_u *)&vvv, PV_NONE, \
2385 			    {(char_u *)"", (char_u *)0L}},
2386 
2387     p_term("t_AB", T_CAB)
2388     p_term("t_AF", T_CAF)
2389     p_term("t_AL", T_CAL)
2390     p_term("t_al", T_AL)
2391     p_term("t_bc", T_BC)
2392     p_term("t_cd", T_CD)
2393     p_term("t_ce", T_CE)
2394     p_term("t_cl", T_CL)
2395     p_term("t_cm", T_CM)
2396     p_term("t_Co", T_CCO)
2397     p_term("t_CS", T_CCS)
2398     p_term("t_cs", T_CS)
2399 #ifdef FEAT_VERTSPLIT
2400     p_term("t_CV", T_CSV)
2401 #endif
2402     p_term("t_ut", T_UT)
2403     p_term("t_da", T_DA)
2404     p_term("t_db", T_DB)
2405     p_term("t_DL", T_CDL)
2406     p_term("t_dl", T_DL)
2407     p_term("t_fs", T_FS)
2408     p_term("t_IE", T_CIE)
2409     p_term("t_IS", T_CIS)
2410     p_term("t_ke", T_KE)
2411     p_term("t_ks", T_KS)
2412     p_term("t_le", T_LE)
2413     p_term("t_mb", T_MB)
2414     p_term("t_md", T_MD)
2415     p_term("t_me", T_ME)
2416     p_term("t_mr", T_MR)
2417     p_term("t_ms", T_MS)
2418     p_term("t_nd", T_ND)
2419     p_term("t_op", T_OP)
2420     p_term("t_RI", T_CRI)
2421     p_term("t_RV", T_CRV)
2422     p_term("t_Sb", T_CSB)
2423     p_term("t_Sf", T_CSF)
2424     p_term("t_se", T_SE)
2425     p_term("t_so", T_SO)
2426     p_term("t_sr", T_SR)
2427     p_term("t_ts", T_TS)
2428     p_term("t_te", T_TE)
2429     p_term("t_ti", T_TI)
2430     p_term("t_ue", T_UE)
2431     p_term("t_us", T_US)
2432     p_term("t_vb", T_VB)
2433     p_term("t_ve", T_VE)
2434     p_term("t_vi", T_VI)
2435     p_term("t_vs", T_VS)
2436     p_term("t_WP", T_CWP)
2437     p_term("t_WS", T_CWS)
2438     p_term("t_xs", T_XS)
2439     p_term("t_ZH", T_CZH)
2440     p_term("t_ZR", T_CZR)
2441 
2442 /* terminal key codes are not in here */
2443 
2444     {NULL, NULL, 0, NULL, PV_NONE, {NULL, NULL}}	/* end marker */
2445 };
2446 
2447 #define PARAM_COUNT (sizeof(options) / sizeof(struct vimoption))
2448 
2449 #ifdef FEAT_MBYTE
2450 static char *(p_ambw_values[]) = {"single", "double", NULL};
2451 #endif
2452 static char *(p_bg_values[]) = {"light", "dark", NULL};
2453 static char *(p_nf_values[]) = {"octal", "hex", "alpha", NULL};
2454 static char *(p_ff_values[]) = {FF_UNIX, FF_DOS, FF_MAC, NULL};
2455 #ifdef FEAT_WAK
2456 static char *(p_wak_values[]) = {"yes", "menu", "no", NULL};
2457 #endif
2458 static char *(p_mousem_values[]) = {"extend", "popup", "popup_setpos", "mac", NULL};
2459 #ifdef FEAT_VISUAL
2460 static char *(p_sel_values[]) = {"inclusive", "exclusive", "old", NULL};
2461 static char *(p_slm_values[]) = {"mouse", "key", "cmd", NULL};
2462 #endif
2463 #ifdef FEAT_VISUAL
2464 static char *(p_km_values[]) = {"startsel", "stopsel", NULL};
2465 #endif
2466 #ifdef FEAT_BROWSE
2467 static char *(p_bsdir_values[]) = {"current", "last", "buffer", NULL};
2468 #endif
2469 #ifdef FEAT_SCROLLBIND
2470 static char *(p_scbopt_values[]) = {"ver", "hor", "jump", NULL};
2471 #endif
2472 static char *(p_swb_values[]) = {"useopen", "split", NULL};
2473 static char *(p_debug_values[]) = {"msg", NULL};
2474 #ifdef FEAT_VERTSPLIT
2475 static char *(p_ead_values[]) = {"both", "ver", "hor", NULL};
2476 #endif
2477 #if defined(FEAT_QUICKFIX)
2478 static char *(p_buftype_values[]) = {"nofile", "nowrite", "quickfix", "help", NULL};
2479 static char *(p_bufhidden_values[]) = {"hide", "unload", "delete", "wipe", NULL};
2480 #endif
2481 static char *(p_bs_values[]) = {"indent", "eol", "start", NULL};
2482 #ifdef FEAT_FOLDING
2483 static char *(p_fdm_values[]) = {"manual", "expr", "marker", "indent", "syntax",
2484 #ifdef FEAT_DIFF
2485 				"diff",
2486 #endif
2487 				NULL};
2488 static char *(p_fcl_values[]) = {"all", NULL};
2489 #endif
2490 
2491 static void set_option_default __ARGS((int, int opt_flags, int compatible));
2492 static void set_options_default __ARGS((int opt_flags));
2493 static char_u *illegal_char __ARGS((char_u *, int));
2494 static int string_to_key __ARGS((char_u *arg));
2495 #ifdef FEAT_CMDWIN
2496 static char_u *check_cedit __ARGS((void));
2497 #endif
2498 #ifdef FEAT_TITLE
2499 static void did_set_title __ARGS((int icon));
2500 #endif
2501 static char_u *option_expand __ARGS((int opt_idx, char_u *val));
2502 static void didset_options __ARGS((void));
2503 static void check_string_option __ARGS((char_u **pp));
2504 static void set_string_option_global __ARGS((int opt_idx, char_u **varp));
2505 static void set_string_option __ARGS((int opt_idx, char_u *value, int opt_flags));
2506 static char_u *did_set_string_option __ARGS((int opt_idx, char_u **varp, int new_value_alloced, char_u *oldval, char_u *errbuf, int opt_flags));
2507 static char_u *set_chars_option __ARGS((char_u **varp));
2508 #ifdef FEAT_CLIPBOARD
2509 static char_u *check_clipboard_option __ARGS((void));
2510 #endif
2511 static char_u *set_bool_option __ARGS((int opt_idx, char_u *varp, int value, int opt_flags));
2512 static char_u *set_num_option __ARGS((int opt_idx, char_u *varp, long value, char_u *errbuf, int opt_flags));
2513 static void check_redraw __ARGS((long_u flags));
2514 static int findoption __ARGS((char_u *));
2515 static int find_key_option __ARGS((char_u *));
2516 static void showoptions __ARGS((int all, int opt_flags));
2517 static int optval_default __ARGS((struct vimoption *, char_u *varp));
2518 static void showoneopt __ARGS((struct vimoption *, int opt_flags));
2519 static int put_setstring __ARGS((FILE *fd, char *cmd, char *name, char_u **valuep, int expand));
2520 static int put_setnum __ARGS((FILE *fd, char *cmd, char *name, long *valuep));
2521 static int put_setbool __ARGS((FILE *fd, char *cmd, char *name, int value));
2522 static int  istermoption __ARGS((struct vimoption *));
2523 static char_u *get_varp_scope __ARGS((struct vimoption *p, int opt_flags));
2524 static char_u *get_varp __ARGS((struct vimoption *));
2525 static void option_value2string __ARGS((struct vimoption *, int opt_flags));
2526 static int wc_use_keyname __ARGS((char_u *varp, long *wcp));
2527 #ifdef FEAT_LANGMAP
2528 static void langmap_init __ARGS((void));
2529 static void langmap_set __ARGS((void));
2530 #endif
2531 static void paste_option_changed __ARGS((void));
2532 static void compatible_set __ARGS((void));
2533 #ifdef FEAT_LINEBREAK
2534 static void fill_breakat_flags __ARGS((void));
2535 #endif
2536 static int opt_strings_flags __ARGS((char_u *val, char **values, unsigned *flagp, int list));
2537 static int check_opt_strings __ARGS((char_u *val, char **values, int));
2538 static int check_opt_wim __ARGS((void));
2539 
2540 /*
2541  * Initialize the options, first part.
2542  *
2543  * Called only once from main(), just after creating the first buffer.
2544  */
2545     void
2546 set_init_1()
2547 {
2548     char_u	*p;
2549     int		opt_idx;
2550     long	n;
2551 
2552 #ifdef FEAT_LANGMAP
2553     langmap_init();
2554 #endif
2555 
2556     /* Be Vi compatible by default */
2557     p_cp = TRUE;
2558 
2559     /*
2560      * Find default value for 'shell' option.
2561      */
2562     if ((p = mch_getenv((char_u *)"SHELL")) != NULL
2563 #if defined(MSDOS) || defined(MSWIN) || defined(OS2)
2564 # ifdef __EMX__
2565 	    || (p = mch_getenv((char_u *)"EMXSHELL")) != NULL
2566 # endif
2567 	    || (p = mch_getenv((char_u *)"COMSPEC")) != NULL
2568 # ifdef WIN3264
2569 	    || (p = default_shell()) != NULL
2570 # endif
2571 #endif
2572        )
2573 	set_string_default("sh", p);
2574 
2575 #ifdef FEAT_WILDIGN
2576     /*
2577      * Set the default for 'backupskip' to include environment variables for
2578      * temp files.
2579      */
2580     {
2581 # ifdef UNIX
2582 	static char	*(names[4]) = {"", "TMPDIR", "TEMP", "TMP"};
2583 # else
2584 	static char	*(names[3]) = {"TMPDIR", "TEMP", "TMP"};
2585 # endif
2586 	int	len;
2587 	garray_T ga;
2588 
2589 	ga_init2(&ga, 1, 100);
2590 	for (n = 0; n < (long)(sizeof(names) / sizeof(char *)); ++n)
2591 	{
2592 # ifdef UNIX
2593 	    if (*names[n] == NUL)
2594 		p = (char_u *)"/tmp";
2595 	    else
2596 # endif
2597 		p = mch_getenv((char_u *)names[n]);
2598 	    if (p != NULL && *p != NUL)
2599 	    {
2600 		/* First time count the NUL, otherwise count the ','. */
2601 		len = STRLEN(p) + 3;
2602 		if (ga_grow(&ga, len) == OK)
2603 		{
2604 		    if (ga.ga_len > 0)
2605 			STRCAT(ga.ga_data, ",");
2606 		    STRCAT(ga.ga_data, p);
2607 		    add_pathsep(ga.ga_data);
2608 		    STRCAT(ga.ga_data, "*");
2609 		    ga.ga_room -= len;
2610 		    ga.ga_len += len;
2611 		}
2612 	    }
2613 	}
2614 	if (ga.ga_data != NULL)
2615 	{
2616 	    set_string_default("bsk", ga.ga_data);
2617 	    vim_free(ga.ga_data);
2618 	}
2619     }
2620 #endif
2621 
2622     /*
2623      * 'maxmemtot' and 'maxmem' may have to be adjusted for available memory
2624      */
2625     opt_idx = findoption((char_u *)"maxmemtot");
2626 #if !defined(HAVE_AVAIL_MEM) && !defined(HAVE_TOTAL_MEM)
2627     if (options[opt_idx].def_val[VI_DEFAULT] == (char_u *)0L)
2628 #endif
2629     {
2630 #ifdef HAVE_AVAIL_MEM
2631 	/* Use amount of memory available at this moment. */
2632 	n = (mch_avail_mem(FALSE) >> 11);
2633 #else
2634 # ifdef HAVE_TOTAL_MEM
2635 	/* Use amount of memory available to Vim. */
2636 	n = (mch_total_mem(FALSE) >> 11);
2637 # else
2638 	n = (0x7fffffff >> 11);
2639 # endif
2640 #endif
2641 	options[opt_idx].def_val[VI_DEFAULT] = (char_u *)n;
2642 	opt_idx = findoption((char_u *)"maxmem");
2643 #if !defined(HAVE_AVAIL_MEM) && !defined(HAVE_TOTAL_MEM)
2644 	if ((long)options[opt_idx].def_val[VI_DEFAULT] > n
2645 			  || (long)options[opt_idx].def_val[VI_DEFAULT] == 0L)
2646 #endif
2647 	    options[opt_idx].def_val[VI_DEFAULT] = (char_u *)n;
2648     }
2649 
2650 #ifdef FEAT_GUI_W32
2651     /* force 'shortname' for Win32s */
2652     if (gui_is_win32s())
2653 	options[findoption((char_u *)"shortname")].def_val[VI_DEFAULT] =
2654 							       (char_u *)TRUE;
2655 #endif
2656 
2657 #ifdef FEAT_SEARCHPATH
2658     {
2659 	char_u	*cdpath;
2660 	char_u	*buf;
2661 	int	i;
2662 	int	j;
2663 
2664 	/* Initialize the 'cdpath' option's default value. */
2665 	cdpath = mch_getenv((char_u *)"CDPATH");
2666 	if (cdpath != NULL)
2667 	{
2668 	    buf = alloc((unsigned)((STRLEN(cdpath) << 1) + 2));
2669 	    if (buf != NULL)
2670 	    {
2671 		buf[0] = ',';	    /* start with ",", current dir first */
2672 		j = 1;
2673 		for (i = 0; cdpath[i] != NUL; ++i)
2674 		{
2675 		    if (vim_ispathlistsep(cdpath[i]))
2676 			buf[j++] = ',';
2677 		    else
2678 		    {
2679 			if (cdpath[i] == ' ' || cdpath[i] == ',')
2680 			    buf[j++] = '\\';
2681 			buf[j++] = cdpath[i];
2682 		    }
2683 		}
2684 		buf[j] = NUL;
2685 		opt_idx = findoption((char_u *)"cdpath");
2686 		options[opt_idx].def_val[VI_DEFAULT] = buf;
2687 		options[opt_idx].flags |= P_DEF_ALLOCED;
2688 	    }
2689 	}
2690     }
2691 #endif
2692 
2693 #if defined(FEAT_POSTSCRIPT) && (defined(MSWIN) || defined(OS2) || defined(VMS) || defined(EBCDIC) || defined(MAC) || defined(hpux))
2694     /* Set print encoding on platforms that don't default to latin1 */
2695     set_string_default("penc",
2696 # if defined(MSWIN) || defined(OS2)
2697 		       (char_u *)"cp1252"
2698 # else
2699 #  ifdef VMS
2700 		       (char_u *)"dec-mcs"
2701 #  else
2702 #   ifdef EBCDIC
2703 		       (char_u *)"ebcdic-uk"
2704 #   else
2705 #    ifdef MAC
2706 		       (char_u *)"mac-roman"
2707 #    else /* HPUX */
2708 		       (char_u *)"hp-roman8"
2709 #    endif
2710 #   endif
2711 #  endif
2712 # endif
2713 		       );
2714 #endif
2715 
2716 #ifdef FEAT_POSTSCRIPT
2717     /* 'printexpr' must be allocated to be able to evaluate it. */
2718     set_string_default("pexpr",
2719 # if defined(MSWIN) || defined(MSDOS) || defined(OS2)
2720 	    (char_u *)"system('copy' . ' ' . v:fname_in . (&printdevice == '' ? ' LPT1:' : (' \"' . &printdevice . '\"'))) . delete(v:fname_in)"
2721 # else
2722 #  ifdef VMS
2723 	    (char_u *)"system('print/delete' . (&printdevice == '' ? '' : ' /queue=' . &printdevice) . ' ' . v:fname_in)"
2724 
2725 #  else
2726 	    (char_u *)"system('lpr' . (&printdevice == '' ? '' : ' -P' . &printdevice) . ' ' . v:fname_in) . delete(v:fname_in) + v:shell_error"
2727 #  endif
2728 # endif
2729 	    );
2730 #endif
2731 
2732     /*
2733      * Set all the options (except the terminal options) to their default
2734      * value.  Also set the global value for local options.
2735      */
2736     set_options_default(0);
2737 
2738 #ifdef FEAT_GUI
2739     if (found_reverse_arg)
2740 	set_option_value((char_u *)"bg", 0L, (char_u *)"dark", 0);
2741 #endif
2742 
2743     curbuf->b_p_initialized = TRUE;
2744     curbuf->b_p_ar = -1;	/* no local 'autoread' value */
2745     check_buf_options(curbuf);
2746     check_win_options(curwin);
2747     check_options();
2748 
2749     /* Must be before option_expand(), because that one needs vim_isIDc() */
2750     didset_options();
2751 
2752 #ifdef FEAT_LINEBREAK
2753     /*
2754      * initialize the table for 'breakat'.
2755      */
2756     fill_breakat_flags();
2757 #endif
2758 
2759     /*
2760      * Expand environment variables and things like "~" for the defaults.
2761      * If option_expand() returns non-NULL the variable is expanded.  This can
2762      * only happen for non-indirect options.
2763      * Also set the default to the expanded value, so ":set" does not list
2764      * them.
2765      * Don't set the P_ALLOCED flag, because we don't want to free the
2766      * default.
2767      */
2768     for (opt_idx = 0; !istermoption(&options[opt_idx]); opt_idx++)
2769     {
2770 	if ((options[opt_idx].flags & P_GETTEXT)
2771 					      && options[opt_idx].var != NULL)
2772 	    p = (char_u *)_(*(char **)options[opt_idx].var);
2773 	else
2774 	    p = option_expand(opt_idx, NULL);
2775 	if (p != NULL && (p = vim_strsave(p)) != NULL)
2776 	{
2777 	    *(char_u **)options[opt_idx].var = p;
2778 	    /* VIMEXP
2779 	     * Defaults for all expanded options are currently the same for Vi
2780 	     * and Vim.  When this changes, add some code here!  Also need to
2781 	     * split P_DEF_ALLOCED in two.
2782 	     */
2783 	    if (options[opt_idx].flags & P_DEF_ALLOCED)
2784 		vim_free(options[opt_idx].def_val[VI_DEFAULT]);
2785 	    options[opt_idx].def_val[VI_DEFAULT] = p;
2786 	    options[opt_idx].flags |= P_DEF_ALLOCED;
2787 	}
2788     }
2789 
2790     /* Initialize the highlight_attr[] table. */
2791     highlight_changed();
2792 
2793     save_file_ff(curbuf);	/* Buffer is unchanged */
2794 
2795     /* Parse default for 'wildmode'  */
2796     check_opt_wim();
2797 
2798 #if defined(FEAT_ARABIC)
2799     /* Detect use of mlterm.
2800      * Mlterm is a terminal emulator akin to xterm that has some special
2801      * abilities (bidi namely).
2802      * NOTE: mlterm's author is being asked to 'set' a variable
2803      *       instead of an environment variable due to inheritance.
2804      */
2805     if (mch_getenv((char_u *)"MLTERM") != NULL)
2806 	set_option_value((char_u *)"tbidi", 1L, NULL, 0);
2807 #endif
2808 
2809 #if defined(FEAT_WINDOWS) || defined(FEAT_FOLDING)
2810     /* Parse default for 'fillchars'. */
2811     (void)set_chars_option(&p_fcs);
2812 #endif
2813 
2814 #ifdef FEAT_CLIPBOARD
2815     /* Parse default for 'clipboard' */
2816     (void)check_clipboard_option();
2817 #endif
2818 
2819 #ifdef FEAT_MBYTE
2820 # if defined(WIN3264) && defined(FEAT_GETTEXT)
2821     /*
2822      * If $LANG isn't set, try to get a good value for it.  This makes the
2823      * right language be used automatically.  Don't do this for English.
2824      */
2825     if (mch_getenv((char_u *)"LANG") == NULL)
2826     {
2827 	char	buf[20];
2828 
2829 	/* Could use LOCALE_SISO639LANGNAME, but it's not in Win95.
2830 	 * LOCALE_SABBREVLANGNAME gives us three letters, like "enu", we use
2831 	 * only the first two. */
2832 	n = GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SABBREVLANGNAME,
2833 							     (LPTSTR)buf, 20);
2834 	if (n >= 2 && STRNICMP(buf, "en", 2) != 0)
2835 	{
2836 	    /* There are a few exceptions (probably more) */
2837 	    if (STRNICMP(buf, "cht", 3) == 0 || STRNICMP(buf, "zht", 3) == 0)
2838 		STRCPY(buf, "zh_TW");
2839 	    else if (STRNICMP(buf, "chs", 3) == 0
2840 					      || STRNICMP(buf, "zhc", 3) == 0)
2841 		STRCPY(buf, "zh_CN");
2842 	    else if (STRNICMP(buf, "jp", 2) == 0)
2843 		STRCPY(buf, "ja");
2844 	    else
2845 		buf[2] = NUL;		/* truncate to two-letter code */
2846 	    vim_setenv("LANG", buf);
2847 	}
2848     }
2849 # endif
2850 
2851     /* enc_locale() will try to find the encoding of the current locale. */
2852     p = enc_locale();
2853     if (p != NULL)
2854     {
2855 	char_u *save_enc;
2856 
2857 	/* Try setting 'encoding' and check if the value is valid.
2858 	 * If not, go back to the default "latin1". */
2859 	save_enc = p_enc;
2860 	p_enc = p;
2861 	if (mb_init() == NULL)
2862 	{
2863 	    opt_idx = findoption((char_u *)"encoding");
2864 	    options[opt_idx].def_val[VI_DEFAULT] = p_enc;
2865 	    options[opt_idx].flags |= P_DEF_ALLOCED;
2866 
2867 # if defined(WIN3264) && !defined(FEAT_GUI)
2868 	    /* Win32 console: When GetACP() returns a different value from
2869 	     * GetConsoleCP() set 'termencoding'. */
2870 	    if (GetACP() != GetConsoleCP())
2871 	    {
2872 		char	buf[50];
2873 
2874 		sprintf(buf, "cp%ld", (long)GetConsoleCP());
2875 		p_tenc = vim_strsave((char_u *)buf);
2876 		if (p_tenc != NULL)
2877 		{
2878 		    opt_idx = findoption((char_u *)"termencoding");
2879 		    options[opt_idx].def_val[VI_DEFAULT] = p_tenc;
2880 		    options[opt_idx].flags |= P_DEF_ALLOCED;
2881 		    convert_setup(&input_conv, p_tenc, p_enc);
2882 		    convert_setup(&output_conv, p_enc, p_tenc);
2883 		}
2884 		else
2885 		    p_tenc = empty_option;
2886 	    }
2887 # endif
2888 	}
2889 	else
2890 	{
2891 	    vim_free(p_enc);
2892 	    p_enc = save_enc;
2893 	}
2894     }
2895 #endif
2896 
2897 #ifdef FEAT_MULTI_LANG
2898     /* Set the default for 'helplang'. */
2899     set_helplang_default(get_mess_lang());
2900 #endif
2901 }
2902 
2903 /*
2904  * Set an option to its default value.
2905  * This does not take care of side effects!
2906  */
2907     static void
2908 set_option_default(opt_idx, opt_flags, compatible)
2909     int		opt_idx;
2910     int		opt_flags;	/* OPT_FREE, OPT_LOCAL and/or OPT_GLOBAL */
2911     int		compatible;	/* use Vi default value */
2912 {
2913     char_u	*varp;		/* pointer to variable for current option */
2914     int		dvi;		/* index in def_val[] */
2915     long_u	flags;
2916     int		both = (opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0;
2917 
2918     varp = get_varp_scope(&(options[opt_idx]), both ? OPT_LOCAL : opt_flags);
2919     flags = options[opt_idx].flags;
2920     if (varp != NULL)	    /* nothing to do for hidden option */
2921     {
2922 	dvi = ((flags & P_VI_DEF) || compatible) ? VI_DEFAULT : VIM_DEFAULT;
2923 	if (flags & P_STRING)
2924 	{
2925 	    /* Use set_string_option_direct() for local options to handle
2926 	     * freeing and allocating the value. */
2927 	    if (options[opt_idx].indir != PV_NONE)
2928 		set_string_option_direct(NULL, opt_idx,
2929 				    options[opt_idx].def_val[dvi], opt_flags);
2930 	    else
2931 	    {
2932 		if ((opt_flags & OPT_FREE) && (flags & P_ALLOCED))
2933 		    free_string_option(*(char_u **)(varp));
2934 		*(char_u **)varp = options[opt_idx].def_val[dvi];
2935 		options[opt_idx].flags &= ~P_ALLOCED;
2936 	    }
2937 	}
2938 	else if (flags & P_NUM)
2939 	{
2940 	    if (varp == (char_u *)PV_SCROLL)
2941 		win_comp_scroll(curwin);
2942 	    else
2943 	    {
2944 		*(long *)varp = (long)options[opt_idx].def_val[dvi];
2945 		/* May also set global value for local option. */
2946 		if (both)
2947 		    *(long *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) =
2948 								*(long *)varp;
2949 	    }
2950 	}
2951 	else	/* P_BOOL */
2952 	{
2953 	    /* the cast to long is required for Manx C */
2954 	    *(int *)varp = (int)(long)options[opt_idx].def_val[dvi];
2955 	    /* May also set global value for local option. */
2956 	    if (both)
2957 		*(int *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) =
2958 								*(int *)varp;
2959 	}
2960     }
2961 
2962 #ifdef FEAT_EVAL
2963     /* Remember where the option was set. */
2964     options[opt_idx].scriptID = current_SID;
2965 #endif
2966 }
2967 
2968 /*
2969  * Set all options (except terminal options) to their default value.
2970  */
2971     static void
2972 set_options_default(opt_flags)
2973     int		opt_flags;	/* OPT_FREE, OPT_LOCAL and/or OPT_GLOBAL */
2974 {
2975     int		i;
2976 #ifdef FEAT_WINDOWS
2977     win_T	*wp;
2978 #endif
2979 
2980     for (i = 0; !istermoption(&options[i]); i++)
2981 	if (!(options[i].flags & P_NODEFAULT))
2982 	    set_option_default(i, opt_flags, p_cp);
2983 
2984 #ifdef FEAT_WINDOWS
2985     /* The 'scroll' option must be computed for all windows. */
2986     for (wp = firstwin; wp != NULL; wp = wp->w_next)
2987 	win_comp_scroll(wp);
2988 #else
2989 	win_comp_scroll(curwin);
2990 #endif
2991 }
2992 
2993 /*
2994  * Set the Vi-default value of a string option.
2995  * Used for 'sh', 'backupskip' and 'term'.
2996  */
2997     void
2998 set_string_default(name, val)
2999     char	*name;
3000     char_u	*val;
3001 {
3002     char_u	*p;
3003     int		opt_idx;
3004 
3005     p = vim_strsave(val);
3006     if (p != NULL)		/* we don't want a NULL */
3007     {
3008 	opt_idx = findoption((char_u *)name);
3009 	if (options[opt_idx].flags & P_DEF_ALLOCED)
3010 	    vim_free(options[opt_idx].def_val[VI_DEFAULT]);
3011 	options[opt_idx].def_val[VI_DEFAULT] = p;
3012 	options[opt_idx].flags |= P_DEF_ALLOCED;
3013     }
3014 }
3015 
3016 /*
3017  * Set the Vi-default value of a number option.
3018  * Used for 'lines' and 'columns'.
3019  */
3020     void
3021 set_number_default(name, val)
3022     char	*name;
3023     long	val;
3024 {
3025     options[findoption((char_u *)name)].def_val[VI_DEFAULT] = (char_u *)val;
3026 }
3027 
3028 /*
3029  * Initialize the options, part two: After getting Rows and Columns and
3030  * setting 'term'.
3031  */
3032     void
3033 set_init_2()
3034 {
3035     /*
3036      * 'scroll' defaults to half the window height. Note that this default is
3037      * wrong when the window height changes.
3038      */
3039     options[findoption((char_u *)"scroll")].def_val[VI_DEFAULT]
3040 					      = (char_u *)((long_u)Rows >> 1);
3041     comp_col();
3042 
3043 #if !((defined(MSDOS) || defined(OS2) || defined(WIN3264)) && !defined(FEAT_GUI))
3044     {
3045 	int	idx4;
3046 
3047 	/*
3048 	 * If 'background' wasn't set by the user, try guessing the value,
3049 	 * depending on the terminal name.  Only need to check for terminals
3050 	 * with a dark background, that can handle color.  Only "linux"
3051 	 * console at the moment.
3052 	 */
3053 	idx4 = findoption((char_u *)"bg");
3054 	if (!(options[idx4].flags & P_WAS_SET) && STRCMP(T_NAME, "linux") == 0)
3055 	{
3056 	    set_string_option_direct(NULL, idx4, (char_u *)"dark", OPT_FREE);
3057 	    /* don't mark it as set, when starting the GUI it may be changed
3058 	     * again */
3059 	    options[idx4].flags &= ~P_WAS_SET;
3060 	}
3061     }
3062 #endif
3063 }
3064 
3065 /*
3066  * Initialize the options, part three: After reading the .vimrc
3067  */
3068     void
3069 set_init_3()
3070 {
3071 #if defined(UNIX) || defined(OS2) || defined(WIN3264)
3072 /*
3073  * Set 'shellpipe' and 'shellredir', depending on the 'shell' option.
3074  * This is done after other initializations, where 'shell' might have been
3075  * set, but only if they have not been set before.
3076  */
3077     char_u  *p;
3078     int	    idx_srr;
3079     int	    do_srr;
3080 #ifdef FEAT_QUICKFIX
3081     int	    idx_sp;
3082     int	    do_sp;
3083 #endif
3084 
3085     idx_srr = findoption((char_u *)"srr");
3086     do_srr = !(options[idx_srr].flags & P_WAS_SET);
3087 #ifdef FEAT_QUICKFIX
3088     idx_sp = findoption((char_u *)"sp");
3089     do_sp = !(options[idx_sp].flags & P_WAS_SET);
3090 #endif
3091 
3092     /*
3093      * Isolate the name of the shell:
3094      * - Skip beyond any path.  E.g., "/usr/bin/csh -f" -> "csh -f".
3095      * - Remove any argument.  E.g., "csh -f" -> "csh".
3096      */
3097     p = gettail(p_sh);
3098     p = vim_strnsave(p, (int)(skiptowhite(p) - p));
3099     if (p != NULL)
3100     {
3101 	/*
3102 	 * Default for p_sp is "| tee", for p_srr is ">".
3103 	 * For known shells it is changed here to include stderr.
3104 	 */
3105 	if (	   fnamecmp(p, "csh") == 0
3106 		|| fnamecmp(p, "tcsh") == 0
3107 # if defined(OS2) || defined(WIN3264)	/* also check with .exe extension */
3108 		|| fnamecmp(p, "csh.exe") == 0
3109 		|| fnamecmp(p, "tcsh.exe") == 0
3110 # endif
3111 	   )
3112 	{
3113 #if defined(FEAT_QUICKFIX)
3114 	    if (do_sp)
3115 	    {
3116 # ifdef WIN3264
3117 		p_sp = (char_u *)">&";
3118 # else
3119 		p_sp = (char_u *)"|& tee";
3120 # endif
3121 		options[idx_sp].def_val[VI_DEFAULT] = p_sp;
3122 	    }
3123 #endif
3124 	    if (do_srr)
3125 	    {
3126 		p_srr = (char_u *)">&";
3127 		options[idx_srr].def_val[VI_DEFAULT] = p_srr;
3128 	    }
3129 	}
3130 	else
3131 # ifndef OS2	/* Always use bourne shell style redirection if we reach this */
3132 	    if (       fnamecmp(p, "sh") == 0
3133 		    || fnamecmp(p, "ksh") == 0
3134 		    || fnamecmp(p, "zsh") == 0
3135 		    || fnamecmp(p, "bash") == 0
3136 #  ifdef WIN3264
3137 		    || fnamecmp(p, "cmd") == 0
3138 		    || fnamecmp(p, "sh.exe") == 0
3139 		    || fnamecmp(p, "ksh.exe") == 0
3140 		    || fnamecmp(p, "zsh.exe") == 0
3141 		    || fnamecmp(p, "bash.exe") == 0
3142 		    || fnamecmp(p, "cmd.exe") == 0
3143 #  endif
3144 		    )
3145 # endif
3146 	    {
3147 #if defined(FEAT_QUICKFIX)
3148 		if (do_sp)
3149 		{
3150 # ifdef WIN3264
3151 		    p_sp = (char_u *)">%s 2>&1";
3152 # else
3153 		    p_sp = (char_u *)"2>&1| tee";
3154 # endif
3155 		    options[idx_sp].def_val[VI_DEFAULT] = p_sp;
3156 		}
3157 #endif
3158 		if (do_srr)
3159 		{
3160 		    p_srr = (char_u *)">%s 2>&1";
3161 		    options[idx_srr].def_val[VI_DEFAULT] = p_srr;
3162 		}
3163 	    }
3164 	vim_free(p);
3165     }
3166 #endif
3167 
3168 #if defined(MSDOS) || defined(WIN3264) || defined(OS2)
3169     /*
3170      * Set 'shellcmdflag and 'shellquote' depending on the 'shell' option.
3171      * This is done after other initializations, where 'shell' might have been
3172      * set, but only if they have not been set before.  Default for p_shcf is
3173      * "/c", for p_shq is "".  For "sh" like  shells it is changed here to
3174      * "-c" and "\"", but not for DJGPP, because it starts the shell without
3175      * command.com.  And for Win32 we need to set p_sxq instead.
3176      */
3177     if (strstr((char *)gettail(p_sh), "sh") != NULL)
3178     {
3179 	int	idx3;
3180 
3181 	idx3 = findoption((char_u *)"shcf");
3182 	if (!(options[idx3].flags & P_WAS_SET))
3183 	{
3184 	    p_shcf = (char_u *)"-c";
3185 	    options[idx3].def_val[VI_DEFAULT] = p_shcf;
3186 	}
3187 
3188 # ifndef DJGPP
3189 #  ifdef WIN3264
3190 	/* Somehow Win32 requires the quotes around the redirection too */
3191 	idx3 = findoption((char_u *)"sxq");
3192 	if (!(options[idx3].flags & P_WAS_SET))
3193 	{
3194 	    p_sxq = (char_u *)"\"";
3195 	    options[idx3].def_val[VI_DEFAULT] = p_sxq;
3196 	}
3197 #  else
3198 	idx3 = findoption((char_u *)"shq");
3199 	if (!(options[idx3].flags & P_WAS_SET))
3200 	{
3201 	    p_shq = (char_u *)"\"";
3202 	    options[idx3].def_val[VI_DEFAULT] = p_shq;
3203 	}
3204 #  endif
3205 # endif
3206     }
3207 #endif
3208 
3209 #ifdef FEAT_TITLE
3210     set_title_defaults();
3211 #endif
3212 }
3213 
3214 #if defined(FEAT_MULTI_LANG) || defined(PROTO)
3215 /*
3216  * When 'helplang' is still at its default value, set it to "lang".
3217  * Only the first two characters of "lang" are used.
3218  */
3219     void
3220 set_helplang_default(lang)
3221     char_u	*lang;
3222 {
3223     int		idx;
3224 
3225     if (lang == NULL || STRLEN(lang) < 2)	/* safety check */
3226 	return;
3227     idx = findoption((char_u *)"hlg");
3228     if (!(options[idx].flags & P_WAS_SET))
3229     {
3230 	if (options[idx].flags & P_ALLOCED)
3231 	    free_string_option(p_hlg);
3232 	p_hlg = vim_strsave(lang);
3233 	if (p_hlg == NULL)
3234 	    p_hlg = empty_option;
3235 	else
3236 	    p_hlg[2] = NUL;
3237 	options[idx].flags |= P_ALLOCED;
3238     }
3239 }
3240 #endif
3241 
3242 #ifdef FEAT_GUI
3243 static char_u *gui_bg_default __ARGS((void));
3244 
3245     static char_u *
3246 gui_bg_default()
3247 {
3248     if (gui_get_lightness(gui.back_pixel) < 127)
3249 	return (char_u *)"dark";
3250     return (char_u *)"light";
3251 }
3252 
3253 /*
3254  * Option initializations that can only be done after opening the GUI window.
3255  */
3256     void
3257 init_gui_options()
3258 {
3259     /* Set the 'background' option according to the lightness of the
3260      * background color, unless the user has set it already. */
3261     if (!option_was_set((char_u *)"bg") && STRCMP(p_bg, gui_bg_default()) != 0)
3262     {
3263 	set_option_value((char_u *)"bg", 0L, gui_bg_default(), 0);
3264 	highlight_changed();
3265     }
3266 }
3267 #endif
3268 
3269 #ifdef FEAT_TITLE
3270 /*
3271  * 'title' and 'icon' only default to true if they have not been set or reset
3272  * in .vimrc and we can read the old value.
3273  * When 'title' and 'icon' have been reset in .vimrc, we won't even check if
3274  * they can be reset.  This reduces startup time when using X on a remote
3275  * machine.
3276  */
3277     void
3278 set_title_defaults()
3279 {
3280     int	    idx1;
3281     long    val;
3282 
3283     /*
3284      * If GUI is (going to be) used, we can always set the window title and
3285      * icon name.  Saves a bit of time, because the X11 display server does
3286      * not need to be contacted.
3287      */
3288     idx1 = findoption((char_u *)"title");
3289     if (!(options[idx1].flags & P_WAS_SET))
3290     {
3291 #ifdef FEAT_GUI
3292 	if (gui.starting || gui.in_use)
3293 	    val = TRUE;
3294 	else
3295 #endif
3296 	    val = mch_can_restore_title();
3297 	options[idx1].def_val[VI_DEFAULT] = (char_u *)val;
3298 	p_title = val;
3299     }
3300     idx1 = findoption((char_u *)"icon");
3301     if (!(options[idx1].flags & P_WAS_SET))
3302     {
3303 #ifdef FEAT_GUI
3304 	if (gui.starting || gui.in_use)
3305 	    val = TRUE;
3306 	else
3307 #endif
3308 	    val = mch_can_restore_icon();
3309 	options[idx1].def_val[VI_DEFAULT] = (char_u *)val;
3310 	p_icon = val;
3311     }
3312 }
3313 #endif
3314 
3315 /*
3316  * Parse 'arg' for option settings.
3317  *
3318  * 'arg' may be IObuff, but only when no errors can be present and option
3319  * does not need to be expanded with option_expand().
3320  * "opt_flags":
3321  * 0 for ":set"
3322  * OPT_GLOBAL for ":setglobal"
3323  * OPT_LOCAL for ":setlocal" and a modeline
3324  * OPT_MODELINE for a modeline
3325  *
3326  * returns FAIL if an error is detected, OK otherwise
3327  */
3328     int
3329 do_set(arg, opt_flags)
3330     char_u	*arg;		/* option string (may be written to!) */
3331     int		opt_flags;
3332 {
3333     int		opt_idx;
3334     char_u	*errmsg;
3335     char_u	errbuf[80];
3336     char_u	*startarg;
3337     int		prefix;	/* 1: nothing, 0: "no", 2: "inv" in front of name */
3338     int		nextchar;	    /* next non-white char after option name */
3339     int		afterchar;	    /* character just after option name */
3340     int		len;
3341     int		i;
3342     long	value;
3343     int		key;
3344     long_u	flags;		    /* flags for current option */
3345     char_u	*varp = NULL;	    /* pointer to variable for current option */
3346     int		did_show = FALSE;   /* already showed one value */
3347     int		adding;		    /* "opt+=arg" */
3348     int		prepending;	    /* "opt^=arg" */
3349     int		removing;	    /* "opt-=arg" */
3350     int		cp_val = 0;
3351     char_u	key_name[2];
3352 
3353     if (*arg == NUL)
3354     {
3355 	showoptions(0, opt_flags);
3356 	return OK;
3357     }
3358 
3359     while (*arg != NUL)		/* loop to process all options */
3360     {
3361 	errmsg = NULL;
3362 	startarg = arg;		/* remember for error message */
3363 
3364 	if (STRNCMP(arg, "all", 3) == 0 && !isalpha(arg[3]))
3365 	{
3366 	    /*
3367 	     * ":set all"  show all options.
3368 	     * ":set all&" set all options to their default value.
3369 	     */
3370 	    arg += 3;
3371 	    if (*arg == '&')
3372 	    {
3373 		++arg;
3374 		/* Only for :set command set global value of local options. */
3375 		set_options_default(OPT_FREE | opt_flags);
3376 	    }
3377 	    else
3378 		showoptions(1, opt_flags);
3379 	}
3380 	else if (STRNCMP(arg, "termcap", 7) == 0)
3381 	{
3382 	    showoptions(2, opt_flags);
3383 	    show_termcodes();
3384 	    arg += 7;
3385 	}
3386 	else
3387 	{
3388 	    prefix = 1;
3389 	    if (STRNCMP(arg, "no", 2) == 0)
3390 	    {
3391 		prefix = 0;
3392 		arg += 2;
3393 	    }
3394 	    else if (STRNCMP(arg, "inv", 3) == 0)
3395 	    {
3396 		prefix = 2;
3397 		arg += 3;
3398 	    }
3399 
3400 	    /* find end of name */
3401 	    key = 0;
3402 	    if (*arg == '<')
3403 	    {
3404 		nextchar = 0;
3405 		opt_idx = -1;
3406 		/* look out for <t_>;> */
3407 		if (arg[1] == 't' && arg[2] == '_' && arg[3] && arg[4])
3408 		    len = 5;
3409 		else
3410 		{
3411 		    len = 1;
3412 		    while (arg[len] != NUL && arg[len] != '>')
3413 			++len;
3414 		}
3415 		if (arg[len] != '>')
3416 		{
3417 		    errmsg = e_invarg;
3418 		    goto skip;
3419 		}
3420 		arg[len] = NUL;			    /* put NUL after name */
3421 		if (arg[1] == 't' && arg[2] == '_') /* could be term code */
3422 		    opt_idx = findoption(arg + 1);
3423 		arg[len++] = '>';		    /* restore '>' */
3424 		if (opt_idx == -1)
3425 		    key = find_key_option(arg + 1);
3426 	    }
3427 	    else
3428 	    {
3429 		len = 0;
3430 		/*
3431 		 * The two characters after "t_" may not be alphanumeric.
3432 		 */
3433 		if (arg[0] == 't' && arg[1] == '_' && arg[2] && arg[3])
3434 		    len = 4;
3435 		else
3436 		    while (ASCII_ISALNUM(arg[len]) || arg[len] == '_')
3437 			++len;
3438 		nextchar = arg[len];
3439 		arg[len] = NUL;			    /* put NUL after name */
3440 		opt_idx = findoption(arg);
3441 		arg[len] = nextchar;		    /* restore nextchar */
3442 		if (opt_idx == -1)
3443 		    key = find_key_option(arg);
3444 	    }
3445 
3446 	    /* remember character after option name */
3447 	    afterchar = arg[len];
3448 
3449 	    /* skip white space, allow ":set ai  ?" */
3450 	    while (vim_iswhite(arg[len]))
3451 		++len;
3452 
3453 	    adding = FALSE;
3454 	    prepending = FALSE;
3455 	    removing = FALSE;
3456 	    if (arg[len] != NUL && arg[len + 1] == '=')
3457 	    {
3458 		if (arg[len] == '+')
3459 		{
3460 		    adding = TRUE;		/* "+=" */
3461 		    ++len;
3462 		}
3463 		else if (arg[len] == '^')
3464 		{
3465 		    prepending = TRUE;		/* "^=" */
3466 		    ++len;
3467 		}
3468 		else if (arg[len] == '-')
3469 		{
3470 		    removing = TRUE;		/* "-=" */
3471 		    ++len;
3472 		}
3473 	    }
3474 	    nextchar = arg[len];
3475 
3476 	    if (opt_idx == -1 && key == 0)	/* found a mismatch: skip */
3477 	    {
3478 		errmsg = (char_u *)N_("E518: Unknown option");
3479 		goto skip;
3480 	    }
3481 
3482 	    if (opt_idx >= 0)
3483 	    {
3484 		if (options[opt_idx].var == NULL)   /* hidden option: skip */
3485 		{
3486 		    /* Only give an error message when requesting the value of
3487 		     * a hidden option, ignore setting it. */
3488 		    if (vim_strchr((char_u *)"=:!&<", nextchar) == NULL
3489 			    && (!(options[opt_idx].flags & P_BOOL)
3490 				|| nextchar == '?'))
3491 			errmsg = (char_u *)N_("E519: Option not supported");
3492 		    goto skip;
3493 		}
3494 
3495 		flags = options[opt_idx].flags;
3496 		varp = get_varp_scope(&(options[opt_idx]), opt_flags);
3497 	    }
3498 	    else
3499 	    {
3500 		flags = P_STRING;
3501 		if (key < 0)
3502 		{
3503 		    key_name[0] = KEY2TERMCAP0(key);
3504 		    key_name[1] = KEY2TERMCAP1(key);
3505 		}
3506 		else
3507 		{
3508 		    key_name[0] = KS_KEY;
3509 		    key_name[1] = (key & 0xff);
3510 		}
3511 	    }
3512 
3513 	    /* Disallow changing some options from modelines */
3514 	    if ((opt_flags & OPT_MODELINE) && (flags & P_SECURE))
3515 	    {
3516 		errmsg = (char_u *)_("E520: Not allowed in a modeline");
3517 		goto skip;
3518 	    }
3519 
3520 #ifdef HAVE_SANDBOX
3521 	    /* Disallow changing some options in the sandbox */
3522 	    if (sandbox > 0 && (flags & P_SECURE))
3523 	    {
3524 		errmsg = (char_u *)_(e_sandbox);
3525 		goto skip;
3526 	    }
3527 #endif
3528 
3529 	    if (vim_strchr((char_u *)"?=:!&<", nextchar) != NULL)
3530 	    {
3531 		arg += len;
3532 		cp_val = p_cp;
3533 		if (nextchar == '&' && arg[1] == 'v' && arg[2] == 'i')
3534 		{
3535 		    if (arg[3] == 'm')	/* "opt&vim": set to Vim default */
3536 		    {
3537 			cp_val = FALSE;
3538 			arg += 3;
3539 		    }
3540 		    else		/* "opt&vi": set to Vi default */
3541 		    {
3542 			cp_val = TRUE;
3543 			arg += 2;
3544 		    }
3545 		}
3546 		if (vim_strchr((char_u *)"?!&<", nextchar) != NULL
3547 			&& arg[1] != NUL && !vim_iswhite(arg[1]))
3548 		{
3549 		    errmsg = e_trailing;
3550 		    goto skip;
3551 		}
3552 	    }
3553 
3554 	    /*
3555 	     * allow '=' and ':' as MSDOS command.com allows only one
3556 	     * '=' character per "set" command line. grrr. (jw)
3557 	     */
3558 	    if (nextchar == '?'
3559 		    || (prefix == 1
3560 			&& vim_strchr((char_u *)"=:&<", nextchar) == NULL
3561 			&& !(flags & P_BOOL)))
3562 	    {
3563 		/*
3564 		 * print value
3565 		 */
3566 		if (did_show)
3567 		    msg_putchar('\n');	    /* cursor below last one */
3568 		else
3569 		{
3570 		    gotocmdline(TRUE);	    /* cursor at status line */
3571 		    did_show = TRUE;	    /* remember that we did a line */
3572 		}
3573 		if (opt_idx >= 0)
3574 		{
3575 		    showoneopt(&options[opt_idx], opt_flags);
3576 #ifdef FEAT_EVAL
3577 		    if (p_verbose > 0)
3578 		    {
3579 			if (options[opt_idx].scriptID != 0)
3580 			{
3581 			    MSG_PUTS(_("\n\tLast set from "));
3582 			    MSG_PUTS(get_scriptname(options[opt_idx].scriptID));
3583 			}
3584 		    }
3585 #endif
3586 		}
3587 		else
3588 		{
3589 		    char_u	    *p;
3590 
3591 		    p = find_termcode(key_name);
3592 		    if (p == NULL)
3593 		    {
3594 			errmsg = (char_u *)N_("E518: Unknown option");
3595 			goto skip;
3596 		    }
3597 		    else
3598 			(void)show_one_termcode(key_name, p, TRUE);
3599 		}
3600 		if (nextchar != '?'
3601 			&& nextchar != NUL && !vim_iswhite(afterchar))
3602 		    errmsg = e_trailing;
3603 	    }
3604 	    else
3605 	    {
3606 		if (flags & P_BOOL)		    /* boolean */
3607 		{
3608 		    if (nextchar == '=' || nextchar == ':')
3609 		    {
3610 			errmsg = e_invarg;
3611 			goto skip;
3612 		    }
3613 
3614 		    /*
3615 		     * ":set opt!": invert
3616 		     * ":set opt&": reset to default value
3617 		     * ":set opt<": reset to global value
3618 		     */
3619 		    if (nextchar == '!')
3620 			value = *(int *)(varp) ^ 1;
3621 		    else if (nextchar == '&')
3622 			value = (int)(long)options[opt_idx].def_val[
3623 						((flags & P_VI_DEF) || cp_val)
3624 						 ?  VI_DEFAULT : VIM_DEFAULT];
3625 		    else if (nextchar == '<')
3626 		    {
3627 			/* For 'autoread' -1 means to use global value. */
3628 			if ((int *)varp == &curbuf->b_p_ar
3629 						    && opt_flags == OPT_LOCAL)
3630 			    value = -1;
3631 			else
3632 			    value = *(int *)get_varp_scope(&(options[opt_idx]),
3633 								  OPT_GLOBAL);
3634 		    }
3635 		    else
3636 		    {
3637 			/*
3638 			 * ":set invopt": invert
3639 			 * ":set opt" or ":set noopt": set or reset
3640 			 */
3641 			if (nextchar != NUL && !vim_iswhite(afterchar))
3642 			{
3643 			    errmsg = e_trailing;
3644 			    goto skip;
3645 			}
3646 			if (prefix == 2)	/* inv */
3647 			    value = *(int *)(varp) ^ 1;
3648 			else
3649 			    value = prefix;
3650 		    }
3651 
3652 		    errmsg = set_bool_option(opt_idx, varp, (int)value,
3653 								   opt_flags);
3654 		}
3655 		else				    /* numeric or string */
3656 		{
3657 		    if (vim_strchr((char_u *)"=:&<", nextchar) == NULL
3658 							       || prefix != 1)
3659 		    {
3660 			errmsg = e_invarg;
3661 			goto skip;
3662 		    }
3663 
3664 		    if (flags & P_NUM)		    /* numeric */
3665 		    {
3666 			/*
3667 			 * Different ways to set a number option:
3668 			 * &	    set to default value
3669 			 * <	    set to global value
3670 			 * <xx>	    accept special key codes for 'wildchar'
3671 			 * c	    accept any non-digit for 'wildchar'
3672 			 * [-]0-9   set number
3673 			 * other    error
3674 			 */
3675 			++arg;
3676 			if (nextchar == '&')
3677 			    value = (long)options[opt_idx].def_val[
3678 						((flags & P_VI_DEF) || cp_val)
3679 						 ?  VI_DEFAULT : VIM_DEFAULT];
3680 			else if (nextchar == '<')
3681 			    value = *(long *)get_varp_scope(&(options[opt_idx]),
3682 								  OPT_GLOBAL);
3683 			else if (((long *)varp == &p_wc
3684 				    || (long *)varp == &p_wcm)
3685 				&& (*arg == '<'
3686 				    || *arg == '^'
3687 				    || ((!arg[1] || vim_iswhite(arg[1]))
3688 					&& !VIM_ISDIGIT(*arg))))
3689 			{
3690 			    value = string_to_key(arg);
3691 			    if (value == 0 && (long *)varp != &p_wcm)
3692 			    {
3693 				errmsg = e_invarg;
3694 				goto skip;
3695 			    }
3696 			}
3697 				/* allow negative numbers (for 'undolevels') */
3698 			else if (*arg == '-' || VIM_ISDIGIT(*arg))
3699 			{
3700 			    i = 0;
3701 			    if (*arg == '-')
3702 				i = 1;
3703 #ifdef HAVE_STRTOL
3704 			    value = strtol((char *)arg, NULL, 0);
3705 			    if (arg[i] == '0' && TOLOWER_ASC(arg[i + 1]) == 'x')
3706 				i += 2;
3707 #else
3708 			    value = atol((char *)arg);
3709 #endif
3710 			    while (VIM_ISDIGIT(arg[i]))
3711 				++i;
3712 			    if (arg[i] != NUL && !vim_iswhite(arg[i]))
3713 			    {
3714 				errmsg = e_invarg;
3715 				goto skip;
3716 			    }
3717 			}
3718 			else
3719 			{
3720 			    errmsg = (char_u *)N_("E521: Number required after =");
3721 			    goto skip;
3722 			}
3723 
3724 			if (adding)
3725 			    value = *(long *)varp + value;
3726 			if (prepending)
3727 			    value = *(long *)varp * value;
3728 			if (removing)
3729 			    value = *(long *)varp - value;
3730 			errmsg = set_num_option(opt_idx, varp, value,
3731 							   errbuf, opt_flags);
3732 		    }
3733 		    else if (opt_idx >= 0)		    /* string */
3734 		    {
3735 			char_u	    *save_arg = NULL;
3736 			char_u	    *s = NULL;
3737 			char_u	    *oldval;	/* previous value if *varp */
3738 			char_u	    *newval;
3739 			char_u	    *origval;
3740 			unsigned    newlen;
3741 			int	    comma;
3742 			int	    bs;
3743 			int	    new_value_alloced;	/* new string option
3744 							   was allocated */
3745 
3746 			/* When using ":set opt=val" for a global option
3747 			 * with a local value the local value will be
3748 			 * reset, use the global value here. */
3749 			if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0
3750 				&& (int)options[opt_idx].indir >= PV_BOTH)
3751 			    varp = options[opt_idx].var;
3752 
3753 			/* The old value is kept until we are sure that the
3754 			 * new value is valid. */
3755 			oldval = *(char_u **)varp;
3756 			if (nextchar == '&')	/* set to default val */
3757 			{
3758 			    newval = options[opt_idx].def_val[
3759 						((flags & P_VI_DEF) || cp_val)
3760 						 ?  VI_DEFAULT : VIM_DEFAULT];
3761 			    if ((char_u **)varp == &p_bg)
3762 			    {
3763 				/* guess the value of 'background' */
3764 #ifdef FEAT_GUI
3765 				if (gui.in_use)
3766 				    newval = gui_bg_default();
3767 				else
3768 #endif
3769 				    if (STRCMP(T_NAME, "linux") == 0)
3770 					newval = (char_u *)"dark";
3771 			    }
3772 
3773 			    /* expand environment variables and ~ (since the
3774 			     * default value was already expanded, only
3775 			     * required when an environment variable was set
3776 			     * later */
3777 			    if (newval == NULL)
3778 				newval = empty_option;
3779 			    else
3780 			    {
3781 				s = option_expand(opt_idx, newval);
3782 				if (s == NULL)
3783 				    s = newval;
3784 				newval = vim_strsave(s);
3785 			    }
3786 			    new_value_alloced = TRUE;
3787 			}
3788 			else if (nextchar == '<')	/* set to global val */
3789 			{
3790 			    newval = vim_strsave(*(char_u **)get_varp_scope(
3791 					     &(options[opt_idx]), OPT_GLOBAL));
3792 			    new_value_alloced = TRUE;
3793 			}
3794 			else
3795 			{
3796 			    ++arg;	/* jump to after the '=' or ':' */
3797 
3798 			    /*
3799 			     * Set 'keywordprg' to ":help" if an empty
3800 			     * value was passed to :set by the user.
3801 			     * Misuse errbuf[] for the resulting string.
3802 			     */
3803 			    if (varp == (char_u *)&p_kp
3804 					      && (*arg == NUL || *arg == ' '))
3805 			    {
3806 				STRCPY(errbuf, ":help");
3807 				save_arg = arg;
3808 				arg = errbuf;
3809 			    }
3810 			    /*
3811 			     * Convert 'whichwrap' number to string, for
3812 			     * backwards compatibility with Vim 3.0.
3813 			     * Misuse errbuf[] for the resulting string.
3814 			     */
3815 			    else if (varp == (char_u *)&p_ww
3816 							 && VIM_ISDIGIT(*arg))
3817 			    {
3818 				*errbuf = NUL;
3819 				i = getdigits(&arg);
3820 				if (i & 1)
3821 				    STRCAT(errbuf, "b,");
3822 				if (i & 2)
3823 				    STRCAT(errbuf, "s,");
3824 				if (i & 4)
3825 				    STRCAT(errbuf, "h,l,");
3826 				if (i & 8)
3827 				    STRCAT(errbuf, "<,>,");
3828 				if (i & 16)
3829 				    STRCAT(errbuf, "[,],");
3830 				if (*errbuf != NUL)	/* remove trailing , */
3831 				    errbuf[STRLEN(errbuf) - 1] = NUL;
3832 				save_arg = arg;
3833 				arg = errbuf;
3834 			    }
3835 			    /*
3836 			     * Remove '>' before 'dir' and 'bdir', for
3837 			     * backwards compatibility with version 3.0
3838 			     */
3839 			    else if (  *arg == '>'
3840 				    && (varp == (char_u *)&p_dir
3841 					    || varp == (char_u *)&p_bdir))
3842 			    {
3843 				++arg;
3844 			    }
3845 
3846 			    /* When setting the local value of a global
3847 			     * option, the old value may be the global value. */
3848 			    if ((int)options[opt_idx].indir >= PV_BOTH
3849 						   && (opt_flags & OPT_LOCAL))
3850 				origval = *(char_u **)get_varp(
3851 							   &options[opt_idx]);
3852 			    else
3853 				origval = oldval;
3854 
3855 			    /*
3856 			     * Copy the new string into allocated memory.
3857 			     * Can't use set_string_option_direct(), because
3858 			     * we need to remove the backslashes.
3859 			     */
3860 			    /* get a bit too much */
3861 			    newlen = (unsigned)STRLEN(arg) + 1;
3862 			    if (adding || prepending || removing)
3863 				newlen += (unsigned)STRLEN(origval) + 1;
3864 			    newval = alloc(newlen);
3865 			    if (newval == NULL)  /* out of mem, don't change */
3866 				break;
3867 			    s = newval;
3868 
3869 			    /*
3870 			     * Copy the string, skip over escaped chars.
3871 			     * For MS-DOS and WIN32 backslashes before normal
3872 			     * file name characters are not removed, and keep
3873 			     * backslash at start, for "\\machine\path", but
3874 			     * do remove it for "\\\\machine\\path".
3875 			     * The reverse is found in ExpandOldSetting().
3876 			     */
3877 			    while (*arg && !vim_iswhite(*arg))
3878 			    {
3879 				if (*arg == '\\' && arg[1] != NUL
3880 #ifdef BACKSLASH_IN_FILENAME
3881 					&& !((flags & P_EXPAND)
3882 						&& vim_isfilec(arg[1])
3883 						&& (arg[1] != '\\'
3884 						    || (s == newval
3885 							&& arg[2] != '\\')))
3886 #endif
3887 								    )
3888 				    ++arg;	/* remove backslash */
3889 #ifdef FEAT_MBYTE
3890 				if (has_mbyte
3891 					&& (i = (*mb_ptr2len_check)(arg)) > 1)
3892 				{
3893 				    /* copy multibyte char */
3894 				    mch_memmove(s, arg, (size_t)i);
3895 				    arg += i;
3896 				    s += i;
3897 				}
3898 				else
3899 #endif
3900 				    *s++ = *arg++;
3901 			    }
3902 			    *s = NUL;
3903 
3904 			    /*
3905 			     * Expand environment variables and ~.
3906 			     * Don't do it when adding without inserting a
3907 			     * comma.
3908 			     */
3909 			    if (!(adding || prepending || removing)
3910 							 || (flags & P_COMMA))
3911 			    {
3912 				s = option_expand(opt_idx, newval);
3913 				if (s != NULL)
3914 				{
3915 				    vim_free(newval);
3916 				    newlen = (unsigned)STRLEN(s) + 1;
3917 				    if (adding || prepending || removing)
3918 					newlen += (unsigned)STRLEN(origval) + 1;
3919 				    newval = alloc(newlen);
3920 				    if (newval == NULL)
3921 					break;
3922 				    STRCPY(newval, s);
3923 				}
3924 			    }
3925 
3926 			    /* locate newval[] in origval[] when removing it
3927 			     * and when adding to avoid duplicates */
3928 			    i = 0;	/* init for GCC */
3929 			    if (removing || (flags & P_NODUP))
3930 			    {
3931 				i = (int)STRLEN(newval);
3932 				bs = 0;
3933 				for (s = origval; *s; ++s)
3934 				{
3935 				    if ((!(flags & P_COMMA)
3936 						|| s == origval
3937 						|| (s[-1] == ',' && !(bs & 1)))
3938 					    && STRNCMP(s, newval, i) == 0
3939 					    && (!(flags & P_COMMA)
3940 						|| s[i] == ','
3941 						|| s[i] == NUL))
3942 					break;
3943 				    /* Count backspaces.  Only a comma with an
3944 				     * even number of backspaces before it is
3945 				     * recognized as a separator */
3946 				    if (s > origval && s[-1] == '\\')
3947 					++bs;
3948 				    else
3949 					bs = 0;
3950 				}
3951 
3952 				/* do not add if already there */
3953 				if ((adding || prepending) && *s)
3954 				{
3955 				    prepending = FALSE;
3956 				    adding = FALSE;
3957 				    STRCPY(newval, origval);
3958 				}
3959 			    }
3960 
3961 			    /* concatenate the two strings; add a ',' if
3962 			     * needed */
3963 			    if (adding || prepending)
3964 			    {
3965 				comma = ((flags & P_COMMA) && *origval != NUL
3966 							   && *newval != NUL);
3967 				if (adding)
3968 				{
3969 				    i = (int)STRLEN(origval);
3970 				    mch_memmove(newval + i + comma, newval,
3971 							  STRLEN(newval) + 1);
3972 				    mch_memmove(newval, origval, (size_t)i);
3973 				}
3974 				else
3975 				{
3976 				    i = (int)STRLEN(newval);
3977 				    mch_memmove(newval + i + comma, origval,
3978 							  STRLEN(origval) + 1);
3979 				}
3980 				if (comma)
3981 				    newval[i] = ',';
3982 			    }
3983 
3984 			    /* Remove newval[] from origval[]. (Note: "i" has
3985 			     * been set above and is used here). */
3986 			    if (removing)
3987 			    {
3988 				STRCPY(newval, origval);
3989 				if (*s)
3990 				{
3991 				    /* may need to remove a comma */
3992 				    if (flags & P_COMMA)
3993 				    {
3994 					if (s == origval)
3995 					{
3996 					    /* include comma after string */
3997 					    if (s[i] == ',')
3998 						++i;
3999 					}
4000 					else
4001 					{
4002 					    /* include comma before string */
4003 					    --s;
4004 					    ++i;
4005 					}
4006 				    }
4007 				    mch_memmove(newval + (s - origval), s + i,
4008 							   STRLEN(s + i) + 1);
4009 				}
4010 			    }
4011 
4012 			    if (flags & P_FLAGLIST)
4013 			    {
4014 				/* Remove flags that appear twice. */
4015 				for (s = newval; *s; ++s)
4016 				    if ((!(flags & P_COMMA) || *s != ',')
4017 					    && vim_strchr(s + 1, *s) != NULL)
4018 				    {
4019 					STRCPY(s, s + 1);
4020 					--s;
4021 				    }
4022 			    }
4023 
4024 			    if (save_arg != NULL)   /* number for 'whichwrap' */
4025 				arg = save_arg;
4026 			    new_value_alloced = TRUE;
4027 			}
4028 
4029 			/* Set the new value. */
4030 			*(char_u **)(varp) = newval;
4031 
4032 			/* Handle side effects, and set the global value for
4033 			 * ":set" on local options. */
4034 			errmsg = did_set_string_option(opt_idx, (char_u **)varp,
4035 				new_value_alloced, oldval, errbuf, opt_flags);
4036 
4037 			/* If error detected, print the error message. */
4038 			if (errmsg != NULL)
4039 			    goto skip;
4040 		    }
4041 		    else	    /* key code option */
4042 		    {
4043 			char_u	    *p;
4044 
4045 			if (nextchar == '&')
4046 			{
4047 			    if (add_termcap_entry(key_name, TRUE) == FAIL)
4048 				errmsg = (char_u *)N_("E522: Not found in termcap");
4049 			}
4050 			else
4051 			{
4052 			    ++arg; /* jump to after the '=' or ':' */
4053 			    for (p = arg; *p && !vim_iswhite(*p); ++p)
4054 				if (*p == '\\' && p[1] != NUL)
4055 				    ++p;
4056 			    nextchar = *p;
4057 			    *p = NUL;
4058 			    add_termcode(key_name, arg, FALSE);
4059 			    *p = nextchar;
4060 			}
4061 			if (full_screen)
4062 			    ttest(FALSE);
4063 			redraw_all_later(CLEAR);
4064 		    }
4065 		}
4066 		if (opt_idx >= 0)
4067 		    options[opt_idx].flags |= P_WAS_SET;
4068 	    }
4069 
4070 skip:
4071 	    /*
4072 	     * Advance to next argument.
4073 	     * - skip until a blank found, taking care of backslashes
4074 	     * - skip blanks
4075 	     * - skip one "=val" argument (for hidden options ":set gfn =xx")
4076 	     */
4077 	    for (i = 0; i < 2 ; ++i)
4078 	    {
4079 		while (*arg != NUL && !vim_iswhite(*arg))
4080 		    if (*arg++ == '\\' && *arg != NUL)
4081 			++arg;
4082 		arg = skipwhite(arg);
4083 		if (*arg != '=')
4084 		    break;
4085 	    }
4086 	}
4087 
4088 	if (errmsg != NULL)
4089 	{
4090 	    STRNCPY(IObuff, _(errmsg), IOSIZE - 1);
4091 	    IObuff[IOSIZE - 1] = NUL;
4092 	    i = STRLEN(IObuff) + 2;
4093 	    if (i + (arg - startarg) < IOSIZE)
4094 	    {
4095 		/* append the argument with the error */
4096 		STRCAT(IObuff, ": ");
4097 		mch_memmove(IObuff + i, startarg, (arg - startarg));
4098 		IObuff[i + (arg - startarg)] = NUL;
4099 	    }
4100 	    /* make sure all characters are printable */
4101 	    trans_characters(IObuff, IOSIZE);
4102 
4103 	    ++no_wait_return;	/* wait_return done later */
4104 	    emsg(IObuff);	/* show error highlighted */
4105 	    --no_wait_return;
4106 
4107 	    return FAIL;
4108 	}
4109 
4110 	arg = skipwhite(arg);
4111     }
4112 
4113     return OK;
4114 }
4115 
4116     static char_u *
4117 illegal_char(errbuf, c)
4118     char_u	*errbuf;
4119     int		c;
4120 {
4121     if (errbuf == NULL)
4122 	return (char_u *)"";
4123     sprintf((char *)errbuf, _("E539: Illegal character <%s>"),
4124 	    (char *)transchar(c));
4125     return errbuf;
4126 }
4127 
4128 /*
4129  * Convert a key name or string into a key value.
4130  * Used for 'wildchar' and 'cedit' options.
4131  */
4132     static int
4133 string_to_key(arg)
4134     char_u	*arg;
4135 {
4136     if (*arg == '<')
4137 	return find_key_option(arg + 1);
4138     if (*arg == '^')
4139 	return Ctrl_chr(arg[1]);
4140     return *arg;
4141 }
4142 
4143 #ifdef FEAT_CMDWIN
4144 /*
4145  * Check value of 'cedit' and set cedit_key.
4146  * Returns NULL if value is OK, error message otherwise.
4147  */
4148     static char_u *
4149 check_cedit()
4150 {
4151     int n;
4152 
4153     if (*p_cedit == NUL)
4154 	cedit_key = -1;
4155     else
4156     {
4157 	n = string_to_key(p_cedit);
4158 	if (vim_isprintc(n))
4159 	    return e_invarg;
4160 	cedit_key = n;
4161     }
4162     return NULL;
4163 }
4164 #endif
4165 
4166 #ifdef FEAT_TITLE
4167 /*
4168  * When changing 'title', 'titlestring', 'icon' or 'iconstring', call
4169  * maketitle() to create and display it.
4170  * When switching the title or icon off, call mch_restore_title() to get
4171  * the old value back.
4172  */
4173     static void
4174 did_set_title(icon)
4175     int	    icon;	    /* Did set icon instead of title */
4176 {
4177     if (starting != NO_SCREEN
4178 #ifdef FEAT_GUI
4179 	    && !gui.starting
4180 #endif
4181 				)
4182     {
4183 	maketitle();
4184 	if (icon)
4185 	{
4186 	    if (!p_icon)
4187 		mch_restore_title(2);
4188 	}
4189 	else
4190 	{
4191 	    if (!p_title)
4192 		mch_restore_title(1);
4193 	}
4194     }
4195 }
4196 #endif
4197 
4198 /*
4199  * set_options_bin -  called when 'bin' changes value.
4200  */
4201     void
4202 set_options_bin(oldval, newval, opt_flags)
4203     int		oldval;
4204     int		newval;
4205     int		opt_flags;	/* OPT_LOCAL and/or OPT_GLOBAL */
4206 {
4207     /*
4208      * The option values that are changed when 'bin' changes are
4209      * copied when 'bin is set and restored when 'bin' is reset.
4210      */
4211     if (newval)
4212     {
4213 	if (!oldval)		/* switched on */
4214 	{
4215 	    if (!(opt_flags & OPT_GLOBAL))
4216 	    {
4217 		curbuf->b_p_tw_nobin = curbuf->b_p_tw;
4218 		curbuf->b_p_wm_nobin = curbuf->b_p_wm;
4219 		curbuf->b_p_ml_nobin = curbuf->b_p_ml;
4220 		curbuf->b_p_et_nobin = curbuf->b_p_et;
4221 	    }
4222 	    if (!(opt_flags & OPT_LOCAL))
4223 	    {
4224 		p_tw_nobin = p_tw;
4225 		p_wm_nobin = p_wm;
4226 		p_ml_nobin = p_ml;
4227 		p_et_nobin = p_et;
4228 	    }
4229 	}
4230 
4231 	if (!(opt_flags & OPT_GLOBAL))
4232 	{
4233 	    curbuf->b_p_tw = 0;	/* no automatic line wrap */
4234 	    curbuf->b_p_wm = 0;	/* no automatic line wrap */
4235 	    curbuf->b_p_ml = 0;	/* no modelines */
4236 	    curbuf->b_p_et = 0;	/* no expandtab */
4237 	}
4238 	if (!(opt_flags & OPT_LOCAL))
4239 	{
4240 	    p_tw = 0;
4241 	    p_wm = 0;
4242 	    p_ml = FALSE;
4243 	    p_et = FALSE;
4244 	    p_bin = TRUE;	/* needed when called for the "-b" argument */
4245 	}
4246     }
4247     else if (oldval)		/* switched off */
4248     {
4249 	if (!(opt_flags & OPT_GLOBAL))
4250 	{
4251 	    curbuf->b_p_tw = curbuf->b_p_tw_nobin;
4252 	    curbuf->b_p_wm = curbuf->b_p_wm_nobin;
4253 	    curbuf->b_p_ml = curbuf->b_p_ml_nobin;
4254 	    curbuf->b_p_et = curbuf->b_p_et_nobin;
4255 	}
4256 	if (!(opt_flags & OPT_LOCAL))
4257 	{
4258 	    p_tw = p_tw_nobin;
4259 	    p_wm = p_wm_nobin;
4260 	    p_ml = p_ml_nobin;
4261 	    p_et = p_et_nobin;
4262 	}
4263     }
4264 }
4265 
4266 #ifdef FEAT_VIMINFO
4267 /*
4268  * Find the parameter represented by the given character (eg ', :, ", or /),
4269  * and return its associated value in the 'viminfo' string.
4270  * Only works for number parameters, not for 'r' or 'n'.
4271  * If the parameter is not specified in the string, return -1.
4272  */
4273     int
4274 get_viminfo_parameter(type)
4275     int	    type;
4276 {
4277     char_u  *p;
4278 
4279     p = find_viminfo_parameter(type);
4280     if (p != NULL && VIM_ISDIGIT(*p))
4281 	return atoi((char *)p);
4282     return -1;
4283 }
4284 
4285 /*
4286  * Find the parameter represented by the given character (eg ''', ':', '"', or
4287  * '/') in the 'viminfo' option and return a pointer to the string after it.
4288  * Return NULL if the parameter is not specified in the string.
4289  */
4290     char_u *
4291 find_viminfo_parameter(type)
4292     int	    type;
4293 {
4294     char_u  *p;
4295 
4296     for (p = p_viminfo; *p; ++p)
4297     {
4298 	if (*p == type)
4299 	    return p + 1;
4300 	if (*p == 'n')		    /* 'n' is always the last one */
4301 	    break;
4302 	p = vim_strchr(p, ',');	    /* skip until next ',' */
4303 	if (p == NULL)		    /* hit the end without finding parameter */
4304 	    break;
4305     }
4306     return NULL;
4307 }
4308 #endif
4309 
4310 /*
4311  * Expand environment variables for some string options.
4312  * These string options cannot be indirect!
4313  * If "val" is NULL expand the current value of the option.
4314  * Return pointer to NameBuff, or NULL when not expanded.
4315  */
4316     static char_u *
4317 option_expand(opt_idx, val)
4318     int		opt_idx;
4319     char_u	*val;
4320 {
4321     /* if option doesn't need expansion nothing to do */
4322     if (!(options[opt_idx].flags & P_EXPAND) || options[opt_idx].var == NULL)
4323 	return NULL;
4324 
4325     /* If val is longer than MAXPATHL no meaningful expansion can be done,
4326      * expand_env() would truncate the string. */
4327     if (val != NULL && STRLEN(val) > MAXPATHL)
4328 	return NULL;
4329 
4330     if (val == NULL)
4331 	val = *(char_u **)options[opt_idx].var;
4332 
4333     /*
4334      * Expanding this with NameBuff, expand_env() must not be passed IObuff.
4335      * Escape spaces when expanding 'tags', they are used to separate file
4336      * names.
4337      */
4338     expand_env_esc(val, NameBuff, MAXPATHL,
4339 				  (char_u **)options[opt_idx].var == &p_tags);
4340     if (STRCMP(NameBuff, val) == 0)   /* they are the same */
4341 	return NULL;
4342 
4343     return NameBuff;
4344 }
4345 
4346 /*
4347  * After setting various option values: recompute variables that depend on
4348  * option values.
4349  */
4350     static void
4351 didset_options()
4352 {
4353     /* initialize the table for 'iskeyword' et.al. */
4354     (void)init_chartab();
4355 
4356     (void)opt_strings_flags(p_cmp, p_cmp_values, &cmp_flags, TRUE);
4357     (void)opt_strings_flags(p_bkc, p_bkc_values, &bkc_flags, TRUE);
4358 #ifdef FEAT_SESSION
4359     (void)opt_strings_flags(p_ssop, p_ssop_values, &ssop_flags, TRUE);
4360     (void)opt_strings_flags(p_vop, p_ssop_values, &vop_flags, TRUE);
4361 #endif
4362 #ifdef FEAT_FOLDING
4363     (void)opt_strings_flags(p_fdo, p_fdo_values, &fdo_flags, TRUE);
4364 #endif
4365     (void)opt_strings_flags(p_dy, p_dy_values, &dy_flags, TRUE);
4366 #ifdef FEAT_VIRTUALEDIT
4367     (void)opt_strings_flags(p_ve, p_ve_values, &ve_flags, TRUE);
4368 #endif
4369 #if defined(FEAT_MOUSE) && (defined(UNIX) || defined(VMS))
4370     (void)opt_strings_flags(p_ttym, p_ttym_values, &ttym_flags, FALSE);
4371 #endif
4372 #if defined(FEAT_TOOLBAR) && !defined(FEAT_GUI_W32)
4373     (void)opt_strings_flags(p_toolbar, p_toolbar_values, &toolbar_flags, TRUE);
4374 #endif
4375 #if defined(FEAT_TOOLBAR) && defined(FEAT_GUI_GTK) && defined(HAVE_GTK2)
4376     (void)opt_strings_flags(p_tbis, p_tbis_values, &tbis_flags, FALSE);
4377 #endif
4378 #ifdef FEAT_CMDWIN
4379     /* set cedit_key */
4380     (void)check_cedit();
4381 #endif
4382 }
4383 
4384 /*
4385  * Check for string options that are NULL (normally only termcap options).
4386  */
4387     void
4388 check_options()
4389 {
4390     int		opt_idx;
4391 
4392     for (opt_idx = 0; options[opt_idx].fullname != NULL; opt_idx++)
4393 	if ((options[opt_idx].flags & P_STRING) && options[opt_idx].var != NULL)
4394 	    check_string_option((char_u **)get_varp(&(options[opt_idx])));
4395 }
4396 
4397 /*
4398  * Check string options in a buffer for NULL value.
4399  */
4400     void
4401 check_buf_options(buf)
4402     buf_T	*buf;
4403 {
4404 #if defined(FEAT_QUICKFIX)
4405     check_string_option(&buf->b_p_bh);
4406     check_string_option(&buf->b_p_bt);
4407 #endif
4408 #ifdef FEAT_MBYTE
4409     check_string_option(&buf->b_p_fenc);
4410 #endif
4411     check_string_option(&buf->b_p_ff);
4412 #ifdef FEAT_FIND_ID
4413     check_string_option(&buf->b_p_def);
4414     check_string_option(&buf->b_p_inc);
4415 # ifdef FEAT_EVAL
4416     check_string_option(&buf->b_p_inex);
4417 # endif
4418 #endif
4419 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
4420     check_string_option(&buf->b_p_inde);
4421     check_string_option(&buf->b_p_indk);
4422 #endif
4423 #ifdef FEAT_CRYPT
4424     check_string_option(&buf->b_p_key);
4425 #endif
4426     check_string_option(&buf->b_p_kp);
4427     check_string_option(&buf->b_p_mps);
4428     check_string_option(&buf->b_p_fo);
4429     check_string_option(&buf->b_p_isk);
4430 #ifdef FEAT_COMMENTS
4431     check_string_option(&buf->b_p_com);
4432 #endif
4433 #ifdef FEAT_FOLDING
4434     check_string_option(&buf->b_p_cms);
4435 #endif
4436     check_string_option(&buf->b_p_nf);
4437 #ifdef FEAT_TEXTOBJ
4438     check_string_option(&buf->b_p_qe);
4439 #endif
4440 #ifdef FEAT_SYN_HL
4441     check_string_option(&buf->b_p_syn);
4442 #endif
4443 #ifdef FEAT_SEARCHPATH
4444     check_string_option(&buf->b_p_sua);
4445 #endif
4446 #ifdef FEAT_CINDENT
4447     check_string_option(&buf->b_p_cink);
4448     check_string_option(&buf->b_p_cino);
4449 #endif
4450 #ifdef FEAT_AUTOCMD
4451     check_string_option(&buf->b_p_ft);
4452 #endif
4453 #ifdef FEAT_OSFILETYPE
4454     check_string_option(&buf->b_p_oft);
4455 #endif
4456 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
4457     check_string_option(&buf->b_p_cinw);
4458 #endif
4459 #ifdef FEAT_INS_EXPAND
4460     check_string_option(&buf->b_p_cpt);
4461 #endif
4462 #ifdef FEAT_COMPL_FUNC
4463     check_string_option(&buf->b_p_cfu);
4464 #endif
4465 #ifdef FEAT_KEYMAP
4466     check_string_option(&buf->b_p_keymap);
4467 #endif
4468 #ifdef FEAT_QUICKFIX
4469     check_string_option(&buf->b_p_gp);
4470     check_string_option(&buf->b_p_mp);
4471     check_string_option(&buf->b_p_efm);
4472 #endif
4473     check_string_option(&buf->b_p_ep);
4474     check_string_option(&buf->b_p_path);
4475     check_string_option(&buf->b_p_tags);
4476 #ifdef FEAT_INS_EXPAND
4477     check_string_option(&buf->b_p_dict);
4478     check_string_option(&buf->b_p_tsr);
4479 #endif
4480 }
4481 
4482 /*
4483  * Free the string allocated for an option.
4484  * Checks for the string being empty_option. This may happen if we're out of
4485  * memory, vim_strsave() returned NULL, which was replaced by empty_option by
4486  * check_options().
4487  * Does NOT check for P_ALLOCED flag!
4488  */
4489     void
4490 free_string_option(p)
4491     char_u	*p;
4492 {
4493     if (p != empty_option)
4494 	vim_free(p);
4495 }
4496 
4497     void
4498 clear_string_option(pp)
4499     char_u	**pp;
4500 {
4501     if (*pp != empty_option)
4502 	vim_free(*pp);
4503     *pp = empty_option;
4504 }
4505 
4506     static void
4507 check_string_option(pp)
4508     char_u	**pp;
4509 {
4510     if (*pp == NULL)
4511 	*pp = empty_option;
4512 }
4513 
4514 /*
4515  * Mark a terminal option as allocated, found by a pointer into term_strings[].
4516  */
4517     void
4518 set_term_option_alloced(p)
4519     char_u **p;
4520 {
4521     int		opt_idx;
4522 
4523     for (opt_idx = 1; options[opt_idx].fullname != NULL; opt_idx++)
4524 	if (options[opt_idx].var == (char_u *)p)
4525 	{
4526 	    options[opt_idx].flags |= P_ALLOCED;
4527 	    return;
4528 	}
4529     return; /* cannot happen: didn't find it! */
4530 }
4531 
4532 /*
4533  * Set a string option to a new value (without checking the effect).
4534  * The string is copied into allocated memory.
4535  * if ("opt_idx" == -1) "name" is used, otherwise "opt_idx" is used.
4536  */
4537     void
4538 set_string_option_direct(name, opt_idx, val, opt_flags)
4539     char_u	*name;
4540     int		opt_idx;
4541     char_u	*val;
4542     int		opt_flags;	/* OPT_FREE, OPT_LOCAL and/or OPT_GLOBAL */
4543 {
4544     char_u	*s;
4545     char_u	**varp;
4546     int		both = (opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0;
4547 
4548     if (opt_idx == -1)		/* use name */
4549     {
4550 	opt_idx = findoption(name);
4551 	if (opt_idx == -1)	/* not found (should not happen) */
4552 	    return;
4553     }
4554 
4555     if (options[opt_idx].var == NULL)	/* can't set hidden option */
4556 	return;
4557 
4558     s = vim_strsave(val);
4559     if (s != NULL)
4560     {
4561 	varp = (char_u **)get_varp_scope(&(options[opt_idx]),
4562 					       both ? OPT_LOCAL : opt_flags);
4563 	if ((opt_flags & OPT_FREE) && (options[opt_idx].flags & P_ALLOCED))
4564 	    free_string_option(*varp);
4565 	*varp = s;
4566 
4567 	/* For buffer/window local option may also set the global value. */
4568 	if (both)
4569 	    set_string_option_global(opt_idx, varp);
4570 
4571 	options[opt_idx].flags |= P_ALLOCED;
4572 
4573 	/* When setting both values of a global option with a local value,
4574 	 * make the local value empty, so that the global value is used. */
4575 	if ((int)options[opt_idx].indir >= PV_BOTH && both)
4576 	{
4577 	    free_string_option(*varp);
4578 	    *varp = empty_option;
4579 	}
4580     }
4581 }
4582 
4583 /*
4584  * Set global value for string option when it's a local option.
4585  */
4586     static void
4587 set_string_option_global(opt_idx, varp)
4588     int		opt_idx;	/* option index */
4589     char_u	**varp;		/* pointer to option variable */
4590 {
4591     char_u	**p, *s;
4592 
4593     /* the global value is always allocated */
4594     if (options[opt_idx].var == VAR_WIN)
4595 	p = (char_u **)GLOBAL_WO(varp);
4596     else
4597 	p = (char_u **)options[opt_idx].var;
4598     if (options[opt_idx].indir != PV_NONE
4599 	    && p != varp
4600 	    && (s = vim_strsave(*varp)) != NULL)
4601     {
4602 	free_string_option(*p);
4603 	*p = s;
4604     }
4605 }
4606 
4607 /*
4608  * Set a string option to a new value, and handle the effects.
4609  */
4610     static void
4611 set_string_option(opt_idx, value, opt_flags)
4612     int		opt_idx;
4613     char_u	*value;
4614     int		opt_flags;	/* OPT_LOCAL and/or OPT_GLOBAL */
4615 {
4616     char_u	*s;
4617     char_u	**varp;
4618     char_u	*oldval;
4619 
4620     if (options[opt_idx].var == NULL)	/* don't set hidden option */
4621 	return;
4622 
4623     s = vim_strsave(value);
4624     if (s != NULL)
4625     {
4626 	varp = (char_u **)get_varp_scope(&(options[opt_idx]),
4627 		(opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0
4628 		    ? ((int)options[opt_idx].indir >= PV_BOTH
4629 			? OPT_GLOBAL : OPT_LOCAL)
4630 		    : opt_flags);
4631 	oldval = *varp;
4632 	*varp = s;
4633 	options[opt_idx].flags |= P_WAS_SET;
4634 	(void)did_set_string_option(opt_idx, varp, TRUE, oldval, NULL,
4635 								   opt_flags);
4636     }
4637 }
4638 
4639 /*
4640  * Handle string options that need some action to perform when changed.
4641  * Returns NULL for success, or an error message for an error.
4642  */
4643     static char_u *
4644 did_set_string_option(opt_idx, varp, new_value_alloced, oldval, errbuf,
4645 								    opt_flags)
4646     int		opt_idx;		/* index in options[] table */
4647     char_u	**varp;			/* pointer to the option variable */
4648     int		new_value_alloced;	/* new value was allocated */
4649     char_u	*oldval;		/* previous value of the option */
4650     char_u	*errbuf;		/* buffer for errors, or NULL */
4651     int		opt_flags;		/* OPT_LOCAL and/or OPT_GLOBAL */
4652 {
4653     char_u	*errmsg = NULL;
4654     char_u	*s, *p;
4655     int		did_chartab = FALSE;
4656     char_u	**gvarp;
4657 
4658     /* Get the global option to compare with, otherwise we would have to check
4659      * two values for all local options. */
4660     gvarp = (char_u **)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL);
4661 
4662     /* Disallow changing some options from secure mode */
4663     if ((secure
4664 #ifdef HAVE_SANDBOX
4665 		|| sandbox != 0
4666 #endif
4667 		) && (options[opt_idx].flags & P_SECURE))
4668     {
4669 	errmsg = e_secure;
4670     }
4671 
4672     /* 'term' */
4673     else if (varp == &T_NAME)
4674     {
4675 	if (T_NAME[0] == NUL)
4676 	    errmsg = (char_u *)N_("E529: Cannot set 'term' to empty string");
4677 #ifdef FEAT_GUI
4678 	if (gui.in_use)
4679 	    errmsg = (char_u *)N_("E530: Cannot change term in GUI");
4680 	else if (term_is_gui(T_NAME))
4681 	    errmsg = (char_u *)N_("E531: Use \":gui\" to start the GUI");
4682 #endif
4683 	else if (set_termname(T_NAME) == FAIL)
4684 	    errmsg = (char_u *)N_("E522: Not found in termcap");
4685 	else
4686 	    /* Screen colors may have changed. */
4687 	    redraw_later_clear();
4688     }
4689 
4690     /* 'backupcopy' */
4691     else if (varp == &p_bkc)
4692     {
4693 	if (opt_strings_flags(p_bkc, p_bkc_values, &bkc_flags, TRUE) != OK)
4694 	    errmsg = e_invarg;
4695 	if (((bkc_flags & BKC_AUTO) != 0)
4696 		+ ((bkc_flags & BKC_YES) != 0)
4697 		+ ((bkc_flags & BKC_NO) != 0) != 1)
4698 	{
4699 	    /* Must have exactly one of "auto", "yes"  and "no". */
4700 	    (void)opt_strings_flags(oldval, p_bkc_values, &bkc_flags, TRUE);
4701 	    errmsg = e_invarg;
4702 	}
4703     }
4704 
4705     /* 'backupext' and 'patchmode' */
4706     else if (varp == &p_bex || varp == &p_pm)
4707     {
4708 	if (STRCMP(*p_bex == '.' ? p_bex + 1 : p_bex,
4709 		     *p_pm == '.' ? p_pm + 1 : p_pm) == 0)
4710 	    errmsg = (char_u *)N_("E589: 'backupext' and 'patchmode' are equal");
4711     }
4712 
4713     /*
4714      * 'isident', 'iskeyword', 'isprint or 'isfname' option: refill chartab[]
4715      * If the new option is invalid, use old value.  'lisp' option: refill
4716      * chartab[] for '-' char
4717      */
4718     else if (  varp == &p_isi
4719 	    || varp == &(curbuf->b_p_isk)
4720 	    || varp == &p_isp
4721 	    || varp == &p_isf)
4722     {
4723 	if (init_chartab() == FAIL)
4724 	{
4725 	    did_chartab = TRUE;	    /* need to restore it below */
4726 	    errmsg = e_invarg;	    /* error in value */
4727 	}
4728     }
4729 
4730     /* 'helpfile' */
4731     else if (varp == &p_hf)
4732     {
4733 	/* May compute new values for $VIM and $VIMRUNTIME */
4734 	if (didset_vim)
4735 	{
4736 	    vim_setenv((char_u *)"VIM", (char_u *)"");
4737 	    didset_vim = FALSE;
4738 	}
4739 	if (didset_vimruntime)
4740 	{
4741 	    vim_setenv((char_u *)"VIMRUNTIME", (char_u *)"");
4742 	    didset_vimruntime = FALSE;
4743 	}
4744     }
4745 
4746 #ifdef FEAT_MULTI_LANG
4747     /* 'helplang' */
4748     else if (varp == &p_hlg)
4749     {
4750 	/* Check for "", "ab", "ab,cd", etc. */
4751 	for (s = p_hlg; *s != NUL; s += 3)
4752 	{
4753 	    if (s[1] == NUL || ((s[2] != ',' || s[3] == NUL) && s[2] != NUL))
4754 	    {
4755 		errmsg = e_invarg;
4756 		break;
4757 	    }
4758 	    if (s[2] == NUL)
4759 		break;
4760 	}
4761     }
4762 #endif
4763 
4764     /* 'highlight' */
4765     else if (varp == &p_hl)
4766     {
4767 	if (highlight_changed() == FAIL)
4768 	    errmsg = e_invarg;	/* invalid flags */
4769     }
4770 
4771     /* 'nrformats' */
4772     else if (gvarp == &p_nf)
4773     {
4774 	if (check_opt_strings(*varp, p_nf_values, TRUE) != OK)
4775 	    errmsg = e_invarg;
4776     }
4777 
4778 #ifdef FEAT_SESSION
4779     /* 'sessionoptions' */
4780     else if (varp == &p_ssop)
4781     {
4782 	if (opt_strings_flags(p_ssop, p_ssop_values, &ssop_flags, TRUE) != OK)
4783 	    errmsg = e_invarg;
4784 	if ((ssop_flags & SSOP_CURDIR) && (ssop_flags & SSOP_SESDIR))
4785 	{
4786 	    /* Don't allow both "sesdir" and "curdir". */
4787 	    (void)opt_strings_flags(oldval, p_ssop_values, &ssop_flags, TRUE);
4788 	    errmsg = e_invarg;
4789 	}
4790     }
4791     /* 'viewoptions' */
4792     else if (varp == &p_vop)
4793     {
4794 	if (opt_strings_flags(p_vop, p_ssop_values, &vop_flags, TRUE) != OK)
4795 	    errmsg = e_invarg;
4796     }
4797 #endif
4798 
4799     /* 'scrollopt' */
4800 #ifdef FEAT_SCROLLBIND
4801     else if (varp == &p_sbo)
4802     {
4803 	if (check_opt_strings(p_sbo, p_scbopt_values, TRUE) != OK)
4804 	    errmsg = e_invarg;
4805     }
4806 #endif
4807 
4808     /* 'ambiwidth' */
4809 #ifdef FEAT_MBYTE
4810     else if (varp == &p_ambw)
4811     {
4812 	if (check_opt_strings(p_ambw, p_ambw_values, FALSE) != OK)
4813 	    errmsg = e_invarg;
4814     }
4815 #endif
4816 
4817     /* 'background' */
4818     else if (varp == &p_bg)
4819     {
4820 	if (check_opt_strings(p_bg, p_bg_values, FALSE) == OK)
4821 	{
4822 #ifdef FEAT_EVAL
4823 	    int dark = (*p_bg == 'd');
4824 #endif
4825 
4826 	    init_highlight(FALSE, FALSE);
4827 
4828 #ifdef FEAT_EVAL
4829 	    if (dark != (*p_bg == 'd')
4830 			  && get_var_value((char_u *)"g:colors_name") != NULL)
4831 	    {
4832 		/* The color scheme must have set 'background' back to another
4833 		 * value, that's not what we want here.  Disable the color
4834 		 * scheme and set the colors again. */
4835 		do_unlet((char_u *)"g:colors_name");
4836 		free_string_option(p_bg);
4837 		p_bg = vim_strsave((char_u *)(dark ? "dark" : "light"));
4838 		check_string_option(&p_bg);
4839 		init_highlight(FALSE, FALSE);
4840 	    }
4841 #endif
4842 	}
4843 	else
4844 	    errmsg = e_invarg;
4845     }
4846 
4847     /* 'wildmode' */
4848     else if (varp == &p_wim)
4849     {
4850 	if (check_opt_wim() == FAIL)
4851 	    errmsg = e_invarg;
4852     }
4853 
4854 #ifdef FEAT_WAK
4855     /* 'winaltkeys' */
4856     else if (varp == &p_wak)
4857     {
4858 	if (*p_wak == NUL
4859 		|| check_opt_strings(p_wak, p_wak_values, FALSE) != OK)
4860 	    errmsg = e_invarg;
4861 # ifdef FEAT_MENU
4862 #  ifdef FEAT_GUI_MOTIF
4863 	else if (gui.in_use)
4864 	    gui_motif_set_mnemonics(p_wak[0] == 'y' || p_wak[0] == 'm');
4865 #  else
4866 #   ifdef FEAT_GUI_GTK
4867 	else if (gui.in_use)
4868 	    gui_gtk_set_mnemonics(p_wak[0] == 'y' || p_wak[0] == 'm');
4869 #   endif
4870 #  endif
4871 # endif
4872     }
4873 #endif
4874 
4875 #ifdef FEAT_AUTOCMD
4876     /* 'eventignore' */
4877     else if (varp == &p_ei)
4878     {
4879 	if (check_ei() == FAIL)
4880 	    errmsg = e_invarg;
4881     }
4882 #endif
4883 
4884 #ifdef FEAT_MBYTE
4885     /* 'encoding' and 'fileencoding' */
4886     else if (varp == &p_enc || gvarp == &p_fenc || varp == &p_tenc)
4887     {
4888 	if (gvarp == &p_fenc)
4889 	{
4890 	    if (!curbuf->b_p_ma)
4891 		errmsg = e_modifiable;
4892 	    else if (vim_strchr(*varp, ',') != NULL)
4893 		/* No comma allowed in 'fileencoding'; catches confusing it
4894 		 * with 'fileencodings'. */
4895 		errmsg = e_invarg;
4896 # ifdef FEAT_TITLE
4897 	    else
4898 		/* May show a "+" in the title now. */
4899 		need_maketitle = TRUE;
4900 # endif
4901 	}
4902 	if (errmsg == NULL)
4903 	{
4904 	    /* canonize the value, so that STRCMP() can be used on it */
4905 	    p = enc_canonize(*varp);
4906 	    if (p != NULL)
4907 	    {
4908 		vim_free(*varp);
4909 		*varp = p;
4910 	    }
4911 	    if (varp == &p_enc)
4912 	    {
4913 		errmsg = mb_init();
4914 # ifdef FEAT_TITLE
4915 		need_maketitle = TRUE;
4916 # endif
4917 	    }
4918 	}
4919 
4920 # if defined(FEAT_GUI_GTK) && defined(HAVE_GTK2)
4921 	if (errmsg == NULL && varp == &p_tenc && gui.in_use)
4922 	{
4923 	    /* GTK+ 2 uses only a single encoding, and that is UTF-8. */
4924 	    if (STRCMP(p_tenc, "utf-8") != 0)
4925 		errmsg = (char_u *)N_("E617: Cannot be changed in the GTK+ 2 GUI");
4926 	}
4927 # endif
4928 
4929 	if (errmsg == NULL)
4930 	{
4931 # ifdef FEAT_KEYMAP
4932 	    /* When 'keymap' is used and 'encoding' changes, reload the keymap
4933 	     * (with another encoding). */
4934 	    if (varp == &p_enc && *curbuf->b_p_keymap != NUL)
4935 		(void)keymap_init();
4936 # endif
4937 
4938 	    /* When 'termencoding' is not empty and 'encoding' changes or when
4939 	     * 'termencoding' changes, need to setup for keyboard input and
4940 	     * display output conversion. */
4941 	    if (((varp == &p_enc && *p_tenc != NUL) || varp == &p_tenc))
4942 	    {
4943 		convert_setup(&input_conv, p_tenc, p_enc);
4944 		convert_setup(&output_conv, p_enc, p_tenc);
4945 	    }
4946 	}
4947     }
4948 #endif
4949 
4950 #if defined(FEAT_POSTSCRIPT)
4951     else if (varp == &p_penc)
4952     {
4953 	/* Canonize printencoding if VIM standard one */
4954 	p = enc_canonize(p_penc);
4955 	if (p != NULL)
4956 	{
4957 	    vim_free(p_penc);
4958 	    p_penc = p;
4959 	}
4960 	else
4961 	{
4962 	    /* Ensure lower case and '-' for '_' */
4963 	    for (s = p_penc; *s != NUL; s++)
4964 	    {
4965 		if (*s == '_')
4966 		    *s = '-';
4967 		else
4968 		    *s = TOLOWER_ASC(*s);
4969 	    }
4970 	}
4971     }
4972 #endif
4973 
4974 #if defined(FEAT_XIM) && ( defined(FEAT_GUI_GTK) || defined(FEAT_GUI_KDE) )
4975     else if (varp == &p_imak)
4976     {
4977 	if (gui.in_use && !im_xim_isvalid_imactivate())
4978 	    errmsg = e_invarg;
4979     }
4980 #endif
4981 
4982 #ifdef FEAT_KEYMAP
4983     else if (varp == &curbuf->b_p_keymap)
4984     {
4985 	/* load or unload key mapping tables */
4986 	errmsg = keymap_init();
4987 
4988 	/* When successfully installed a new keymap switch on using it. */
4989 	if (*curbuf->b_p_keymap != NUL && errmsg == NULL)
4990 	{
4991 	    curbuf->b_p_iminsert = B_IMODE_LMAP;
4992 	    if (curbuf->b_p_imsearch != B_IMODE_USE_INSERT)
4993 		curbuf->b_p_imsearch = B_IMODE_LMAP;
4994 	    set_iminsert_global();
4995 	    set_imsearch_global();
4996 # ifdef FEAT_WINDOWS
4997 	    status_redraw_curbuf();
4998 # endif
4999 	}
5000     }
5001 #endif
5002 
5003     /* 'fileformat' */
5004     else if (gvarp == &p_ff)
5005     {
5006 	if (!curbuf->b_p_ma && !(opt_flags & OPT_GLOBAL))
5007 	    errmsg = e_modifiable;
5008 	else if (check_opt_strings(*varp, p_ff_values, FALSE) != OK)
5009 	    errmsg = e_invarg;
5010 	else
5011 	{
5012 	    /* may also change 'textmode' */
5013 	    if (get_fileformat(curbuf) == EOL_DOS)
5014 		curbuf->b_p_tx = TRUE;
5015 	    else
5016 		curbuf->b_p_tx = FALSE;
5017 #ifdef FEAT_TITLE
5018 	    need_maketitle = TRUE;
5019 #endif
5020 	}
5021     }
5022 
5023     /* 'fileformats' */
5024     else if (varp == &p_ffs)
5025     {
5026 	if (check_opt_strings(p_ffs, p_ff_values, TRUE) != OK)
5027 	    errmsg = e_invarg;
5028 	else
5029 	{
5030 	    /* also change 'textauto' */
5031 	    if (*p_ffs == NUL)
5032 		p_ta = FALSE;
5033 	    else
5034 		p_ta = TRUE;
5035 	}
5036     }
5037 
5038 #if defined(FEAT_CRYPT) && defined(FEAT_CMDHIST)
5039     /* 'cryptkey' */
5040     else if (gvarp == &p_key)
5041     {
5042 	/* Make sure the ":set" command doesn't show the new value in the
5043 	 * history. */
5044 	remove_key_from_history();
5045     }
5046 #endif
5047 
5048     /* 'matchpairs' */
5049     else if (gvarp == &p_mps)
5050     {
5051 	/* Check for "x:y,x:y" */
5052 	for (p = *varp; *p != NUL; p += 4)
5053 	{
5054 	    if (p[1] != ':' || p[2] == NUL || (p[3] != NUL && p[3] != ','))
5055 	    {
5056 		errmsg = e_invarg;
5057 		break;
5058 	    }
5059 	    if (p[3] == NUL)
5060 		break;
5061 	}
5062     }
5063 
5064 #ifdef FEAT_COMMENTS
5065     /* 'comments' */
5066     else if (gvarp == &p_com)
5067     {
5068 	for (s = *varp; *s; )
5069 	{
5070 	    while (*s && *s != ':')
5071 	    {
5072 		if (vim_strchr((char_u *)COM_ALL, *s) == NULL
5073 					     && !VIM_ISDIGIT(*s) && *s != '-')
5074 		{
5075 		    errmsg = illegal_char(errbuf, *s);
5076 		    break;
5077 		}
5078 		++s;
5079 	    }
5080 	    if (*s++ == NUL)
5081 		errmsg = (char_u *)N_("E524: Missing colon");
5082 	    else if (*s == ',' || *s == NUL)
5083 		errmsg = (char_u *)N_("E525: Zero length string");
5084 	    if (errmsg != NULL)
5085 		break;
5086 	    while (*s && *s != ',')
5087 	    {
5088 		if (*s == '\\' && s[1] != NUL)
5089 		    ++s;
5090 		++s;
5091 	    }
5092 	    s = skip_to_option_part(s);
5093 	}
5094     }
5095 #endif
5096 
5097     /* 'listchars' */
5098     else if (varp == &p_lcs)
5099     {
5100 	errmsg = set_chars_option(varp);
5101     }
5102 
5103 #if defined(FEAT_WINDOWS) || defined(FEAT_FOLDING)
5104     /* 'fillchars' */
5105     else if (varp == &p_fcs)
5106     {
5107 	errmsg = set_chars_option(varp);
5108     }
5109 #endif
5110 
5111 #ifdef FEAT_CMDWIN
5112     /* 'cedit' */
5113     else if (varp == &p_cedit)
5114     {
5115 	errmsg = check_cedit();
5116     }
5117 #endif
5118 
5119 #ifdef FEAT_VIMINFO
5120     /* 'viminfo' */
5121     else if (varp == &p_viminfo)
5122     {
5123 	for (s = p_viminfo; *s;)
5124 	{
5125 	    /* Check it's a valid character */
5126 	    if (vim_strchr((char_u *)"!\"%'/:<@cfhnrs", *s) == NULL)
5127 	    {
5128 		errmsg = illegal_char(errbuf, *s);
5129 		break;
5130 	    }
5131 	    if (*s == 'n')	/* name is always last one */
5132 	    {
5133 		break;
5134 	    }
5135 	    else if (*s == 'r') /* skip until next ',' */
5136 	    {
5137 		while (*++s && *s != ',')
5138 		    ;
5139 	    }
5140 	    else if (*s == '%' || *s == '!' || *s == 'h' || *s == 'c')
5141 		++s;		/* no extra chars */
5142 	    else		/* must have a number */
5143 	    {
5144 		while (vim_isdigit(*++s))
5145 		    ;
5146 
5147 		if (!VIM_ISDIGIT(*(s - 1)))
5148 		{
5149 		    if (errbuf != NULL)
5150 		    {
5151 			sprintf((char *)errbuf, _("E526: Missing number after <%s>"),
5152 						    transchar_byte(*(s - 1)));
5153 			errmsg = errbuf;
5154 		    }
5155 		    else
5156 			errmsg = (char_u *)"";
5157 		    break;
5158 		}
5159 	    }
5160 	    if (*s == ',')
5161 		++s;
5162 	    else if (*s)
5163 	    {
5164 		if (errbuf != NULL)
5165 		    errmsg = (char_u *)N_("E527: Missing comma");
5166 		else
5167 		    errmsg = (char_u *)"";
5168 		break;
5169 	    }
5170 	}
5171 	if (*p_viminfo && errmsg == NULL && get_viminfo_parameter('\'') < 0)
5172 	    errmsg = (char_u *)N_("E528: Must specify a ' value");
5173     }
5174 #endif /* FEAT_VIMINFO */
5175 
5176     /* terminal options */
5177     else if (istermoption(&options[opt_idx]) && full_screen)
5178     {
5179 	/* ":set t_Co=0" and ":set t_Co=1" do ":set t_Co=" */
5180 	if (varp == &T_CCO)
5181 	{
5182 	    t_colors = atoi((char *)T_CCO);
5183 	    if (t_colors <= 1)
5184 	    {
5185 		if (new_value_alloced)
5186 		    vim_free(T_CCO);
5187 		T_CCO = empty_option;
5188 	    }
5189 	    /* We now have a different color setup, initialize it again. */
5190 	    init_highlight(TRUE, FALSE);
5191 	}
5192 	ttest(FALSE);
5193 	if (varp == &T_ME)
5194 	{
5195 	    out_str(T_ME);
5196 	    redraw_later(CLEAR);
5197 #if defined(MSDOS) || (defined(WIN3264) && !defined(FEAT_GUI_W32))
5198 	    /* Since t_me has been set, this probably means that the user
5199 	     * wants to use this as default colors.  Need to reset default
5200 	     * background/foreground colors. */
5201 	    mch_set_normal_colors();
5202 #endif
5203 	}
5204     }
5205 
5206 #ifdef FEAT_LINEBREAK
5207     /* 'showbreak' */
5208     else if (varp == &p_sbr)
5209     {
5210 	for (s = p_sbr; *s; )
5211 	{
5212 	    if (ptr2cells(s) != 1)
5213 		errmsg = (char_u *)N_("E595: contains unprintable or wide character");
5214 # ifdef FEAT_MBYTE
5215 	    if (has_mbyte)
5216 		s += (*mb_ptr2len_check)(s);
5217 	    else
5218 # endif
5219 		++s;
5220 	}
5221     }
5222 #endif
5223 
5224 #ifdef FEAT_GUI
5225     /* 'guifont' */
5226     else if (varp == &p_guifont)
5227     {
5228 	if (gui.in_use)
5229 	{
5230 	    p = p_guifont;
5231 # if defined(FEAT_GUI_GTK) || defined(FEAT_GUI_KDE)
5232 	    /*
5233 	     * Put up a font dialog and let the user select a new value.
5234 	     * If this is cancelled go back to the old value but don't
5235 	     * give an error message.
5236 	     */
5237 	    if (STRCMP(p, "*") == 0)
5238 	    {
5239 		p = gui_mch_font_dialog(oldval);
5240 
5241 		if (new_value_alloced)
5242 		    free_string_option(p_guifont);
5243 
5244 		p_guifont = (p != NULL) ? p : vim_strsave(oldval);
5245 		new_value_alloced = TRUE;
5246 	    }
5247 # endif
5248 	    if (p != NULL && gui_init_font(p_guifont, FALSE) != OK)
5249 	    {
5250 # if defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_PHOTON)
5251 		if (STRCMP(p_guifont, "*") == 0)
5252 		{
5253 		    /* Dialog was cancelled: Keep the old value without giving
5254 		     * an error message. */
5255 		    if (new_value_alloced)
5256 			free_string_option(p_guifont);
5257 		    p_guifont = vim_strsave(oldval);
5258 		    new_value_alloced = TRUE;
5259 		}
5260 		else
5261 # endif
5262 		    errmsg = (char_u *)N_("E596: Invalid font(s)");
5263 	    }
5264 	}
5265     }
5266 # ifdef FEAT_XFONTSET
5267     else if (varp == &p_guifontset)
5268     {
5269 	if (STRCMP(p_guifontset, "*") == 0)
5270 	    errmsg = (char_u *)N_("E597: can't select fontset");
5271 	else if (gui.in_use && gui_init_font(p_guifontset, TRUE) != OK)
5272 	    errmsg = (char_u *)N_("E598: Invalid fontset");
5273     }
5274 # endif
5275 # ifdef FEAT_MBYTE
5276     else if (varp == &p_guifontwide)
5277     {
5278 	if (STRCMP(p_guifontwide, "*") == 0)
5279 	    errmsg = (char_u *)N_("E533: can't select wide font");
5280 	else if (gui_get_wide_font() == FAIL)
5281 	    errmsg = (char_u *)N_("E534: Invalid wide font");
5282     }
5283 # endif
5284 #endif
5285 
5286 #ifdef CURSOR_SHAPE
5287     /* 'guicursor' */
5288     else if (varp == &p_guicursor)
5289 	errmsg = parse_shape_opt(SHAPE_CURSOR);
5290 #endif
5291 
5292 #ifdef FEAT_MOUSESHAPE
5293     /* 'mouseshape' */
5294     else if (varp == &p_mouseshape)
5295     {
5296 	errmsg = parse_shape_opt(SHAPE_MOUSE);
5297 	update_mouseshape(-1);
5298     }
5299 #endif
5300 
5301 #ifdef FEAT_PRINTER
5302     else if (varp == &p_popt)
5303 	errmsg = parse_list_options(p_popt, printer_opts, OPT_PRINT_NUM_OPTIONS);
5304 
5305 # if defined(FEAT_MBYTE) && defined(FEAT_POSTSCRIPT)
5306     else if (varp == &p_pmfn)
5307 	errmsg = parse_list_options(p_pmfn, mbfont_opts, OPT_MBFONT_NUM_OPTIONS);
5308 # endif
5309 #endif
5310 
5311 #ifdef FEAT_LANGMAP
5312     /* 'langmap' */
5313     else if (varp == &p_langmap)
5314 	langmap_set();
5315 #endif
5316 
5317 #ifdef FEAT_LINEBREAK
5318     /* 'breakat' */
5319     else if (varp == &p_breakat)
5320 	fill_breakat_flags();
5321 #endif
5322 
5323 #ifdef FEAT_TITLE
5324     /* 'titlestring' and 'iconstring' */
5325     else if (varp == &p_titlestring || varp == &p_iconstring)
5326     {
5327 # ifdef FEAT_STL_OPT
5328 	int	flagval = (varp == &p_titlestring) ? STL_IN_TITLE : STL_IN_ICON;
5329 
5330 	/* NULL => statusline syntax */
5331 	if (vim_strchr(*varp, '%') && check_stl_option(*varp) == NULL)
5332 	    stl_syntax |= flagval;
5333 	else
5334 	    stl_syntax &= ~flagval;
5335 # endif
5336 	did_set_title(varp == &p_iconstring);
5337 
5338     }
5339 #endif
5340 
5341 #ifdef FEAT_GUI
5342     /* 'guioptions' */
5343     else if (varp == &p_go)
5344 	gui_init_which_components(oldval);
5345 #endif
5346 
5347 #if defined(FEAT_MOUSE_TTY) && (defined(UNIX) || defined(VMS))
5348     /* 'ttymouse' */
5349     else if (varp == &p_ttym)
5350     {
5351 	if (opt_strings_flags(p_ttym, p_ttym_values, &ttym_flags, FALSE) != OK)
5352 	    errmsg = e_invarg;
5353 	else
5354 	    check_mouse_termcode();
5355     }
5356 #endif
5357 
5358 #ifdef FEAT_VISUAL
5359     /* 'selection' */
5360     else if (varp == &p_sel)
5361     {
5362 	if (*p_sel == NUL
5363 		|| check_opt_strings(p_sel, p_sel_values, FALSE) != OK)
5364 	    errmsg = e_invarg;
5365     }
5366 
5367     /* 'selectmode' */
5368     else if (varp == &p_slm)
5369     {
5370 	if (check_opt_strings(p_slm, p_slm_values, TRUE) != OK)
5371 	    errmsg = e_invarg;
5372     }
5373 #endif
5374 
5375 #ifdef FEAT_BROWSE
5376     /* 'browsedir' */
5377     else if (varp == &p_bsdir)
5378     {
5379 	if (check_opt_strings(p_bsdir, p_bsdir_values, FALSE) != OK
5380 		&& !mch_isdir(p_bsdir))
5381 	    errmsg = e_invarg;
5382     }
5383 #endif
5384 
5385 #ifdef FEAT_VISUAL
5386     /* 'keymodel' */
5387     else if (varp == &p_km)
5388     {
5389 	if (check_opt_strings(p_km, p_km_values, TRUE) != OK)
5390 	    errmsg = e_invarg;
5391 	else
5392 	{
5393 	    km_stopsel = (vim_strchr(p_km, 'o') != NULL);
5394 	    km_startsel = (vim_strchr(p_km, 'a') != NULL);
5395 	}
5396     }
5397 #endif
5398 
5399     /* 'mousemodel' */
5400     else if (varp == &p_mousem)
5401     {
5402 	if (check_opt_strings(p_mousem, p_mousem_values, FALSE) != OK)
5403 	    errmsg = e_invarg;
5404 #if defined(FEAT_GUI_MOTIF) && defined(FEAT_MENU) && (XmVersion <= 1002)
5405 	else if (*p_mousem != *oldval)
5406 	    /* Changed from "extend" to "popup" or "popup_setpos" or vv: need
5407 	     * to create or delete the popup menus. */
5408 	    gui_motif_update_mousemodel(root_menu);
5409 #endif
5410     }
5411 
5412     /* 'switchbuf' */
5413     else if (varp == &p_swb)
5414     {
5415 	if (check_opt_strings(p_swb, p_swb_values, TRUE) != OK)
5416 	    errmsg = e_invarg;
5417     }
5418 
5419     /* 'debug' */
5420     else if (varp == &p_debug)
5421     {
5422 	if (check_opt_strings(p_debug, p_debug_values, FALSE) != OK)
5423 	    errmsg = e_invarg;
5424     }
5425 
5426     /* 'display' */
5427     else if (varp == &p_dy)
5428     {
5429 	if (opt_strings_flags(p_dy, p_dy_values, &dy_flags, TRUE) != OK)
5430 	    errmsg = e_invarg;
5431 	else
5432 	    (void)init_chartab();
5433 
5434     }
5435 
5436 #ifdef FEAT_VERTSPLIT
5437     /* 'eadirection' */
5438     else if (varp == &p_ead)
5439     {
5440 	if (check_opt_strings(p_ead, p_ead_values, FALSE) != OK)
5441 	    errmsg = e_invarg;
5442     }
5443 #endif
5444 
5445 #ifdef FEAT_CLIPBOARD
5446     /* 'clipboard' */
5447     else if (varp == &p_cb)
5448 	errmsg = check_clipboard_option();
5449 #endif
5450 
5451 #ifdef FEAT_AUTOCMD
5452 # ifdef FEAT_SYN_HL
5453     /* When 'syntax' is set, load the syntax of that name */
5454     else if (varp == &(curbuf->b_p_syn))
5455     {
5456 	apply_autocmds(EVENT_SYNTAX, curbuf->b_p_syn,
5457 					     curbuf->b_fname, TRUE, curbuf);
5458     }
5459 # endif
5460 
5461     /* When 'filetype' is set, trigger the FileType autocommands of that name */
5462     else if (varp == &(curbuf->b_p_ft))
5463     {
5464 	did_filetype = TRUE;
5465 	apply_autocmds(EVENT_FILETYPE, curbuf->b_p_ft,
5466 					     curbuf->b_fname, TRUE, curbuf);
5467     }
5468 #endif
5469 
5470 #ifdef FEAT_QUICKFIX
5471     /* When 'bufhidden' is set, check for valid value. */
5472     else if (gvarp == &p_bh)
5473     {
5474 	if (check_opt_strings(curbuf->b_p_bh, p_bufhidden_values, FALSE) != OK)
5475 	    errmsg = e_invarg;
5476     }
5477 
5478     /* When 'buftype' is set, check for valid value. */
5479     else if (gvarp == &p_bt)
5480     {
5481 	if (check_opt_strings(curbuf->b_p_bt, p_buftype_values, FALSE) != OK)
5482 	    errmsg = e_invarg;
5483 	else
5484 	{
5485 # ifdef FEAT_WINDOWS
5486 	    if (curwin->w_status_height)
5487 	    {
5488 		curwin->w_redr_status = TRUE;
5489 		redraw_later(VALID);
5490 	    }
5491 # endif
5492 	    curbuf->b_help = (curbuf->b_p_bt[0] == 'h');
5493 	}
5494     }
5495 #endif
5496 
5497 #ifdef FEAT_STL_OPT
5498     /* 'statusline' or 'rulerformat' */
5499     else if (varp == &p_stl || varp == &p_ruf)
5500     {
5501 	int wid;
5502 
5503 	if (varp == &p_ruf)	/* reset ru_wid first */
5504 	    ru_wid = 0;
5505 	s = *varp;
5506 	if (varp == &p_ruf && *s == '%')
5507 	{
5508 	    /* set ru_wid if 'ruf' starts with "%99(" */
5509 	    if (*++s == '-')	/* ignore a '-' */
5510 		s++;
5511 	    wid = getdigits(&s);
5512 	    if (wid && *s == '(' && (errmsg = check_stl_option(p_ruf)) == NULL)
5513 		ru_wid = wid;
5514 	    else
5515 		errmsg = check_stl_option(p_ruf);
5516 	}
5517 	else
5518 	    errmsg = check_stl_option(s);
5519 	if (varp == &(p_ruf) && errmsg == NULL)
5520 	    comp_col();
5521     }
5522 #endif
5523 
5524 #ifdef FEAT_INS_EXPAND
5525     /* check if it is a valid value for 'complete' -- Acevedo */
5526     else if (gvarp == &p_cpt)
5527     {
5528 	for (s = *varp; *s;)
5529 	{
5530 	    while(*s == ',' || *s == ' ')
5531 		s++;
5532 	    if (!*s)
5533 		break;
5534 	    if (vim_strchr((char_u *)".wbuksid]tU", *s) == NULL)
5535 	    {
5536 		errmsg = illegal_char(errbuf, *s);
5537 		break;
5538 	    }
5539 	    if (*++s != NUL && *s != ',' && *s != ' ')
5540 	    {
5541 		if (s[-1] == 'k' || s[-1] == 's')
5542 		{
5543 		    /* skip optional filename after 'k' and 's' */
5544 		    while (*s && *s != ',' && *s != ' ')
5545 		    {
5546 			if (*s == '\\')
5547 			    ++s;
5548 			++s;
5549 		    }
5550 		}
5551 		else
5552 		{
5553 		    if (errbuf != NULL)
5554 		    {
5555 			sprintf((char *)errbuf,
5556 				     _("E535: Illegal character after <%c>"),
5557 				     *--s);
5558 			errmsg = errbuf;
5559 		    }
5560 		    else
5561 			errmsg = (char_u *)"";
5562 		    break;
5563 		}
5564 	    }
5565 	}
5566     }
5567 #endif /* FEAT_INS_EXPAND */
5568 
5569 
5570 #if defined(FEAT_TOOLBAR) && !defined(FEAT_GUI_W32)
5571     else if (varp == &p_toolbar)
5572     {
5573 	if (opt_strings_flags(p_toolbar, p_toolbar_values,
5574 			      &toolbar_flags, TRUE) != OK)
5575 	    errmsg = e_invarg;
5576 	else
5577 	{
5578 	    out_flush();
5579 	    gui_mch_show_toolbar((toolbar_flags &
5580 				  (TOOLBAR_TEXT | TOOLBAR_ICONS)) != 0);
5581 	}
5582     }
5583 #endif
5584 
5585 #if defined(FEAT_TOOLBAR) && defined(FEAT_GUI_GTK) && defined(HAVE_GTK2)
5586     /* 'toolbariconsize': GTK+ 2 only */
5587     else if (varp == &p_tbis)
5588     {
5589 	if (opt_strings_flags(p_tbis, p_tbis_values, &tbis_flags, FALSE) != OK)
5590 	    errmsg = e_invarg;
5591 	else
5592 	{
5593 	    out_flush();
5594 	    gui_mch_show_toolbar((toolbar_flags &
5595 				  (TOOLBAR_TEXT | TOOLBAR_ICONS)) != 0);
5596 	}
5597     }
5598 #endif
5599 
5600     /* 'pastetoggle': translate key codes like in a mapping */
5601     else if (varp == &p_pt)
5602     {
5603 	if (*p_pt)
5604 	{
5605 	    (void)replace_termcodes(p_pt, &p, TRUE, TRUE);
5606 	    if (p != NULL)
5607 	    {
5608 		if (new_value_alloced)
5609 		    free_string_option(p_pt);
5610 		p_pt = p;
5611 		new_value_alloced = TRUE;
5612 	    }
5613 	}
5614     }
5615 
5616     /* 'backspace' */
5617     else if (varp == &p_bs)
5618     {
5619 	if (VIM_ISDIGIT(*p_bs))
5620 	{
5621 	    if (*p_bs >'2' || p_bs[1] != NUL)
5622 		errmsg = e_invarg;
5623 	}
5624 	else if (check_opt_strings(p_bs, p_bs_values, TRUE) != OK)
5625 	    errmsg = e_invarg;
5626     }
5627 
5628     /* 'casemap' */
5629     else if (varp == &p_cmp)
5630     {
5631 	if (opt_strings_flags(p_cmp, p_cmp_values, &cmp_flags, TRUE) != OK)
5632 	    errmsg = e_invarg;
5633     }
5634 
5635 #ifdef FEAT_DIFF
5636     /* 'diffopt' */
5637     else if (varp == &p_dip)
5638     {
5639 	if (diffopt_changed() == FAIL)
5640 	    errmsg = e_invarg;
5641     }
5642 #endif
5643 
5644 #ifdef FEAT_FOLDING
5645     /* 'foldmethod' */
5646     else if (gvarp == &curwin->w_allbuf_opt.wo_fdm)
5647     {
5648 	if (check_opt_strings(*varp, p_fdm_values, FALSE) != OK
5649 		|| *curwin->w_p_fdm == NUL)
5650 	    errmsg = e_invarg;
5651 	else
5652 	    foldUpdateAll(curwin);
5653     }
5654 # ifdef FEAT_EVAL
5655     /* 'foldexpr' */
5656     else if (varp == &curwin->w_p_fde)
5657     {
5658 	if (foldmethodIsExpr(curwin))
5659 	    foldUpdateAll(curwin);
5660     }
5661 # endif
5662     /* 'foldmarker' */
5663     else if (gvarp == &curwin->w_allbuf_opt.wo_fmr)
5664     {
5665 	p = vim_strchr(*varp, ',');
5666 	if (p == NULL)
5667 	    errmsg = (char_u *)N_("E536: comma required");
5668 	else if (p == *varp || p[1] == NUL)
5669 	    errmsg = e_invarg;
5670 	else if (foldmethodIsMarker(curwin))
5671 	    foldUpdateAll(curwin);
5672     }
5673     /* 'commentstring' */
5674     else if (gvarp == &p_cms)
5675     {
5676 	if (**varp != NUL && strstr((char *)*varp, "%s") == NULL)
5677 	    errmsg = (char_u *)N_("E537: 'commentstring' must be empty or contain %s");
5678     }
5679     /* 'foldopen' */
5680     else if (varp == &p_fdo)
5681     {
5682 	if (opt_strings_flags(p_fdo, p_fdo_values, &fdo_flags, TRUE) != OK)
5683 	    errmsg = e_invarg;
5684     }
5685     /* 'foldclose' */
5686     else if (varp == &p_fcl)
5687     {
5688 	if (check_opt_strings(p_fcl, p_fcl_values, TRUE) != OK)
5689 	    errmsg = e_invarg;
5690     }
5691 #endif
5692 
5693 #ifdef FEAT_VIRTUALEDIT
5694     /* 'virtualedit' */
5695     else if (varp == &p_ve)
5696     {
5697 	if (opt_strings_flags(p_ve, p_ve_values, &ve_flags, TRUE) != OK)
5698 	    errmsg = e_invarg;
5699 	else if (STRCMP(p_ve, oldval) != 0)
5700 	{
5701 	    /* Recompute cursor position in case the new 've' setting
5702 	     * changes something. */
5703 	    validate_virtcol();
5704 	    coladvance(curwin->w_virtcol);
5705 	}
5706     }
5707 #endif
5708 
5709 #if defined(FEAT_CSCOPE) && defined(FEAT_QUICKFIX)
5710     else if (varp == &p_csqf)
5711     {
5712 	if (p_csqf != NULL)
5713 	{
5714 	    p = p_csqf;
5715 	    while (*p != NUL)
5716 	    {
5717 		if (vim_strchr((char_u *)CSQF_CMDS, *p) == NULL
5718 			|| p[1] == NUL
5719 			|| vim_strchr((char_u *)CSQF_FLAGS, p[1]) == NULL
5720 			|| (p[2] != NUL && p[2] != ','))
5721 		{
5722 		    errmsg = e_invarg;
5723 		    break;
5724 		}
5725 		else if (p[2] == NUL)
5726 		    break;
5727 		else
5728 		    p += 3;
5729 	    }
5730 	}
5731     }
5732 #endif
5733 
5734     /* Options that are a list of flags. */
5735     else
5736     {
5737 	p = NULL;
5738 	if (varp == &p_ww)
5739 	    p = (char_u *)WW_ALL;
5740 	if (varp == &p_shm)
5741 	    p = (char_u *)SHM_ALL;
5742 	else if (varp == &(p_cpo))
5743 	    p = (char_u *)CPO_ALL;
5744 	else if (varp == &(curbuf->b_p_fo))
5745 	    p = (char_u *)FO_ALL;
5746 	else if (varp == &p_mouse)
5747 	{
5748 #ifdef FEAT_MOUSE
5749 	    p = (char_u *)MOUSE_ALL;
5750 #else
5751 	    if (*p_mouse != NUL)
5752 		errmsg = (char_u *)N_("E538: No mouse support");
5753 #endif
5754 	}
5755 #if defined(FEAT_GUI)
5756 	else if (varp == &p_go)
5757 	    p = (char_u *)GO_ALL;
5758 #endif
5759 	if (p != NULL)
5760 	{
5761 	    for (s = *varp; *s; ++s)
5762 		if (vim_strchr(p, *s) == NULL)
5763 		{
5764 		    errmsg = illegal_char(errbuf, *s);
5765 		    break;
5766 		}
5767 	}
5768     }
5769 
5770     /*
5771      * If error detected, restore the previous value.
5772      */
5773     if (errmsg != NULL)
5774     {
5775 	if (new_value_alloced)
5776 	    free_string_option(*varp);
5777 	*varp = oldval;
5778 	/*
5779 	 * When resetting some values, need to act on it.
5780 	 */
5781 	if (did_chartab)
5782 	    (void)init_chartab();
5783 	if (varp == &p_hl)
5784 	    (void)highlight_changed();
5785     }
5786     else
5787     {
5788 #ifdef FEAT_EVAL
5789 	/* Remember where the option was set. */
5790 	options[opt_idx].scriptID = current_SID;
5791 #endif
5792 	/*
5793 	 * Free string options that are in allocated memory.
5794 	 */
5795 	if (options[opt_idx].flags & P_ALLOCED)
5796 	    free_string_option(oldval);
5797 	if (new_value_alloced)
5798 	    options[opt_idx].flags |= P_ALLOCED;
5799 	else
5800 	    options[opt_idx].flags &= ~P_ALLOCED;
5801 
5802 	if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0
5803 		&& (int)options[opt_idx].indir >= PV_BOTH)
5804 	{
5805 	    /* global option with local value set to use global value; free
5806 	     * the local value and make it empty */
5807 	    p = get_varp_scope(&(options[opt_idx]), OPT_LOCAL);
5808 	    free_string_option(*(char_u **)p);
5809 	    *(char_u **)p = empty_option;
5810 	}
5811 
5812 	/* May set global value for local option. */
5813 	else if (!(opt_flags & OPT_LOCAL) && opt_flags != OPT_GLOBAL)
5814 	    set_string_option_global(opt_idx, varp);
5815     }
5816 
5817 #ifdef FEAT_MOUSE
5818     if (varp == &p_mouse)
5819     {
5820 # ifdef FEAT_MOUSE_TTY
5821 	if (*p_mouse == NUL)
5822 	    mch_setmouse(FALSE);    /* switch mouse off */
5823 	else
5824 # endif
5825 	    setmouse();		    /* in case 'mouse' changed */
5826     }
5827 #endif
5828 
5829     if (curwin->w_curswant != MAXCOL)
5830 	curwin->w_set_curswant = TRUE;  /* in case 'showbreak' changed */
5831     check_redraw(options[opt_idx].flags);
5832 
5833     return errmsg;
5834 }
5835 
5836 /*
5837  * Handle setting 'listchars' or 'fillchars'.
5838  * Returns error message, NULL if it's OK.
5839  */
5840     static char_u *
5841 set_chars_option(varp)
5842     char_u	**varp;
5843 {
5844     int		round, i, len, entries;
5845     char_u	*p, *s;
5846     int		c1, c2 = 0;
5847     struct charstab
5848     {
5849 	int	*cp;
5850 	char	*name;
5851     };
5852 #if defined(FEAT_WINDOWS) || defined(FEAT_FOLDING)
5853     static struct charstab filltab[] =
5854     {
5855 	{&fill_stl,	"stl"},
5856 	{&fill_stlnc,	"stlnc"},
5857 	{&fill_vert,	"vert"},
5858 	{&fill_fold,	"fold"},
5859 	{&fill_diff,	"diff"},
5860     };
5861 #endif
5862     static struct charstab lcstab[] =
5863     {
5864 	{&lcs_eol,	"eol"},
5865 	{&lcs_ext,	"extends"},
5866 	{&lcs_nbsp,	"nbsp"},
5867 	{&lcs_prec,	"precedes"},
5868 	{&lcs_tab2,	"tab"},
5869 	{&lcs_trail,	"trail"},
5870     };
5871     struct charstab *tab;
5872 
5873 #if defined(FEAT_WINDOWS) || defined(FEAT_FOLDING)
5874     if (varp == &p_lcs)
5875 #endif
5876     {
5877 	tab = lcstab;
5878 	entries = sizeof(lcstab) / sizeof(struct charstab);
5879     }
5880 #if defined(FEAT_WINDOWS) || defined(FEAT_FOLDING)
5881     else
5882     {
5883 	tab = filltab;
5884 	entries = sizeof(filltab) / sizeof(struct charstab);
5885     }
5886 #endif
5887 
5888     /* first round: check for valid value, second round: assign values */
5889     for (round = 0; round <= 1; ++round)
5890     {
5891 	if (round)
5892 	{
5893 	    /* After checking that the value is valid: set defaults: space for
5894 	     * 'fillchars', NUL for 'listchars' */
5895 	    for (i = 0; i < entries; ++i)
5896 		*(tab[i].cp) = (varp == &p_lcs ? NUL : ' ');
5897 	    if (varp == &p_lcs)
5898 		lcs_tab1 = NUL;
5899 #if defined(FEAT_WINDOWS) || defined(FEAT_FOLDING)
5900 	    else
5901 		fill_diff = '-';
5902 #endif
5903 	}
5904 	p = *varp;
5905 	while (*p)
5906 	{
5907 	    for (i = 0; i < entries; ++i)
5908 	    {
5909 		len = (int)STRLEN(tab[i].name);
5910 		if (STRNCMP(p, tab[i].name, len) == 0
5911 			&& p[len] == ':'
5912 			&& p[len + 1] != NUL)
5913 		{
5914 		    s = p + len + 1;
5915 #ifdef FEAT_MBYTE
5916 		    c1 = mb_ptr2char_adv(&s);
5917 #else
5918 		    c1 = *s++;
5919 #endif
5920 		    if (tab[i].cp == &lcs_tab2)
5921 		    {
5922 			if (*s == NUL)
5923 			    continue;
5924 #ifdef FEAT_MBYTE
5925 			c2 = mb_ptr2char_adv(&s);
5926 #else
5927 			c2 = *s++;
5928 #endif
5929 		    }
5930 		    if (*s == ',' || *s == NUL)
5931 		    {
5932 			if (round)
5933 			{
5934 			    if (tab[i].cp == &lcs_tab2)
5935 			    {
5936 				lcs_tab1 = c1;
5937 				lcs_tab2 = c2;
5938 			    }
5939 			    else
5940 				*(tab[i].cp) = c1;
5941 
5942 			}
5943 			p = s;
5944 			break;
5945 		    }
5946 		}
5947 	    }
5948 
5949 	    if (i == entries)
5950 		return e_invarg;
5951 	    if (*p == ',')
5952 		++p;
5953 	}
5954     }
5955 
5956     return NULL;	/* no error */
5957 }
5958 
5959 #ifdef FEAT_STL_OPT
5960 /*
5961  * Check validity of options with the 'statusline' format.
5962  * Return error message or NULL.
5963  */
5964     char_u *
5965 check_stl_option(s)
5966     char_u	*s;
5967 {
5968     int		itemcnt = 0;
5969     int		groupdepth = 0;
5970     static char_u   errbuf[80];
5971 
5972     while (*s && itemcnt < STL_MAX_ITEM)
5973     {
5974 	/* Check for valid keys after % sequences */
5975 	while (*s && *s != '%')
5976 	    s++;
5977 	if (!*s)
5978 	    break;
5979 	s++;
5980 	if (*s != '%' && *s != ')')
5981 	    ++itemcnt;
5982 	if (*s == '%' || *s == STL_TRUNCMARK || *s == STL_MIDDLEMARK)
5983 	{
5984 	    s++;
5985 	    continue;
5986 	}
5987 	if (*s == ')')
5988 	{
5989 	    s++;
5990 	    if (--groupdepth < 0)
5991 		break;
5992 	    continue;
5993 	}
5994 	if (*s == '-')
5995 	    s++;
5996 	while (VIM_ISDIGIT(*s))
5997 	    s++;
5998 	if (*s == STL_HIGHLIGHT)
5999 	    continue;
6000 	if (*s == '.')
6001 	{
6002 	    s++;
6003 	    while (*s && VIM_ISDIGIT(*s))
6004 		s++;
6005 	}
6006 	if (*s == '(')
6007 	{
6008 	    groupdepth++;
6009 	    continue;
6010 	}
6011 	if (vim_strchr(STL_ALL, *s) == NULL)
6012 	{
6013 	    return illegal_char(errbuf, *s);
6014 	}
6015 	if (*s == '{')
6016 	{
6017 	    s++;
6018 	    while (*s != '}' && *s)
6019 		s++;
6020 	    if (*s != '}')
6021 		return (char_u *)N_("E540: Unclosed expression sequence");
6022 	}
6023     }
6024     if (itemcnt >= STL_MAX_ITEM)
6025 	return (char_u *)N_("E541: too many items");
6026     if (groupdepth != 0)
6027 	return (char_u *)N_("E542: unbalanced groups");
6028     return NULL;
6029 }
6030 #endif
6031 
6032 #ifdef FEAT_CLIPBOARD
6033 /*
6034  * Extract the items in the 'clipboard' option and set global values.
6035  */
6036     static char_u *
6037 check_clipboard_option()
6038 {
6039     int		new_unnamed = FALSE;
6040     int		new_autoselect = FALSE;
6041     int		new_autoselectml = FALSE;
6042     regprog_T	*new_exclude_prog = NULL;
6043     char_u	*errmsg = NULL;
6044     char_u	*p;
6045 
6046     for (p = p_cb; *p != NUL; )
6047     {
6048 	if (STRNCMP(p, "unnamed", 7) == 0 && (p[7] == ',' || p[7] == NUL))
6049 	{
6050 	    new_unnamed = TRUE;
6051 	    p += 7;
6052 	}
6053 	else if (STRNCMP(p, "autoselect", 10) == 0
6054 					&& (p[10] == ',' || p[10] == NUL))
6055 	{
6056 	    new_autoselect = TRUE;
6057 	    p += 10;
6058 	}
6059 	else if (STRNCMP(p, "autoselectml", 12) == 0
6060 					&& (p[12] == ',' || p[12] == NUL))
6061 	{
6062 	    new_autoselectml = TRUE;
6063 	    p += 12;
6064 	}
6065 	else if (STRNCMP(p, "exclude:", 8) == 0 && new_exclude_prog == NULL)
6066 	{
6067 	    p += 8;
6068 	    new_exclude_prog = vim_regcomp(p, RE_MAGIC);
6069 	    if (new_exclude_prog == NULL)
6070 		errmsg = e_invarg;
6071 	    break;
6072 	}
6073 	else
6074 	{
6075 	    errmsg = e_invarg;
6076 	    break;
6077 	}
6078 	if (*p == ',')
6079 	    ++p;
6080     }
6081     if (errmsg == NULL)
6082     {
6083 	clip_unnamed = new_unnamed;
6084 	clip_autoselect = new_autoselect;
6085 	clip_autoselectml = new_autoselectml;
6086 	vim_free(clip_exclude_prog);
6087 	clip_exclude_prog = new_exclude_prog;
6088     }
6089     else
6090 	vim_free(new_exclude_prog);
6091 
6092     return errmsg;
6093 }
6094 #endif
6095 
6096 /*
6097  * Set the value of a boolean option, and take care of side effects.
6098  * Returns NULL for success, or an error message for an error.
6099  */
6100     static char_u *
6101 set_bool_option(opt_idx, varp, value, opt_flags)
6102     int		opt_idx;		/* index in options[] table */
6103     char_u	*varp;			/* pointer to the option variable */
6104     int		value;			/* new value */
6105     int		opt_flags;		/* OPT_LOCAL and/or OPT_GLOBAL */
6106 {
6107     int		old_value = *(int *)varp;
6108 
6109 #ifdef FEAT_GUI
6110     need_mouse_correct = TRUE;
6111 #endif
6112 
6113     /* Disallow changing some options from secure mode */
6114     if ((secure
6115 #ifdef HAVE_SANDBOX
6116 		|| sandbox != 0
6117 #endif
6118 		) && (options[opt_idx].flags & P_SECURE))
6119 	return e_secure;
6120 
6121     *(int *)varp = value;	    /* set the new value */
6122 #ifdef FEAT_EVAL
6123     /* Remember where the option was set. */
6124     options[opt_idx].scriptID = current_SID;
6125 #endif
6126 
6127     /* May set global value for local option. */
6128     if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0)
6129 	*(int *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) = value;
6130 
6131     /*
6132      * Handle side effects of changing a bool option.
6133      */
6134 
6135     /* 'compatible' */
6136     if ((int *)varp == &p_cp)
6137     {
6138 	compatible_set();
6139     }
6140 
6141     /* when 'readonly' is reset globally, also reset readonlymode */
6142     else if ((int *)varp == &curbuf->b_p_ro)
6143     {
6144 	if (!curbuf->b_p_ro && (opt_flags & OPT_LOCAL) == 0)
6145 	    readonlymode = FALSE;
6146 #ifdef FEAT_TITLE
6147 	need_maketitle = TRUE;
6148 #endif
6149     }
6150 
6151 #ifdef FEAT_TITLE
6152     /* when 'modifiable' is changed, redraw the window title */
6153     else if ((int *)varp == &curbuf->b_p_ma)
6154 	need_maketitle = TRUE;
6155     /* when 'endofline' is changed, redraw the window title */
6156     else if ((int *)varp == &curbuf->b_p_eol)
6157 	need_maketitle = TRUE;
6158 #endif
6159 
6160     /* when 'bin' is set also set some other options */
6161     else if ((int *)varp == &curbuf->b_p_bin)
6162     {
6163 	set_options_bin(old_value, curbuf->b_p_bin, opt_flags);
6164 #ifdef FEAT_TITLE
6165 	need_maketitle = TRUE;
6166 #endif
6167     }
6168 
6169 #ifdef FEAT_AUTOCMD
6170     /* when 'buflisted' changes, trigger autocommands */
6171     else if ((int *)varp == &curbuf->b_p_bl && old_value != curbuf->b_p_bl)
6172     {
6173 	apply_autocmds(curbuf->b_p_bl ? EVENT_BUFADD : EVENT_BUFDELETE,
6174 						    NULL, NULL, TRUE, curbuf);
6175     }
6176 #endif
6177 
6178     /* when 'swf' is set, create swapfile, when reset remove swapfile */
6179     else if ((int *)varp == &curbuf->b_p_swf)
6180     {
6181 	if (curbuf->b_p_swf && p_uc)
6182 	    ml_open_file(curbuf);		/* create the swap file */
6183 	else
6184 	    mf_close_file(curbuf, TRUE);	/* remove the swap file */
6185     }
6186 
6187     /* when 'terse' is set change 'shortmess' */
6188     else if ((int *)varp == &p_terse)
6189     {
6190 	char_u	*p;
6191 
6192 	p = vim_strchr(p_shm, SHM_SEARCH);
6193 
6194 	/* insert 's' in p_shm */
6195 	if (p_terse && p == NULL)
6196 	{
6197 	    STRCPY(IObuff, p_shm);
6198 	    STRCAT(IObuff, "s");
6199 	    set_string_option_direct((char_u *)"shm", -1, IObuff, OPT_FREE);
6200 	}
6201 	/* remove 's' from p_shm */
6202 	else if (!p_terse && p != NULL)
6203 	    mch_memmove(p, p + 1, STRLEN(p));
6204     }
6205 
6206     /* when 'paste' is set or reset also change other options */
6207     else if ((int *)varp == &p_paste)
6208     {
6209 	paste_option_changed();
6210     }
6211 
6212     /* when 'insertmode' is set from an autocommand need to do work here */
6213     else if ((int *)varp == &p_im)
6214     {
6215 	if (p_im)
6216 	{
6217 	    if ((State & INSERT) == 0)
6218 		need_start_insertmode = TRUE;
6219 	    stop_insert_mode = FALSE;
6220 	}
6221 	else
6222 	{
6223 	    need_start_insertmode = FALSE;
6224 	    stop_insert_mode = TRUE;
6225 	    if (p_smd && restart_edit != 0)
6226 		clear_cmdline = TRUE;	/* remove "(insert)" */
6227 	    restart_edit = 0;
6228 	}
6229     }
6230 
6231     /* when 'ignorecase' is set or reset and 'hlsearch' is set, redraw */
6232     else if ((int *)varp == &p_ic && p_hls)
6233     {
6234 	redraw_all_later(NOT_VALID);
6235     }
6236 
6237 #ifdef FEAT_SEARCH_EXTRA
6238     /* when 'hlsearch' is set or reset: reset no_hlsearch */
6239     else if ((int *)varp == &p_hls)
6240     {
6241 	no_hlsearch = FALSE;
6242     }
6243 #endif
6244 
6245 #ifdef FEAT_SCROLLBIND
6246     /* when 'scrollbind' is set: snapshot the current position to avoid a jump
6247      * at the end of normal_cmd() */
6248     else if ((int *)varp == &curwin->w_p_scb)
6249     {
6250 	if (curwin->w_p_scb)
6251 	    do_check_scrollbind(FALSE);
6252     }
6253 #endif
6254 
6255 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
6256     /* There can be only one window with 'previewwindow' set. */
6257     else if ((int *)varp == &curwin->w_p_pvw)
6258     {
6259 	if (curwin->w_p_pvw)
6260 	{
6261 	    win_T	*win;
6262 
6263 	    for (win = firstwin; win != NULL; win = win->w_next)
6264 		if (win->w_p_pvw && win != curwin)
6265 		{
6266 		    curwin->w_p_pvw = FALSE;
6267 		    return (char_u *)N_("E590: A preview window already exists");
6268 		}
6269 	}
6270     }
6271 #endif
6272 
6273     /* when 'textmode' is set or reset also change 'fileformat' */
6274     else if ((int *)varp == &curbuf->b_p_tx)
6275     {
6276 	set_fileformat(curbuf->b_p_tx ? EOL_DOS : EOL_UNIX, opt_flags);
6277     }
6278 
6279     /* when 'textauto' is set or reset also change 'fileformats' */
6280     else if ((int *)varp == &p_ta)
6281     {
6282 	set_string_option_direct((char_u *)"ffs", -1,
6283 				 p_ta ? (char_u *)DFLT_FFS_VIM : (char_u *)"",
6284 							OPT_FREE | opt_flags);
6285     }
6286 
6287     /*
6288      * When 'lisp' option changes include/exclude '-' in
6289      * keyword characters.
6290      */
6291 #ifdef FEAT_LISP
6292     else if (varp == (char_u *)&(curbuf->b_p_lisp))
6293     {
6294 	(void)buf_init_chartab(curbuf, FALSE);	    /* ignore errors */
6295     }
6296 #endif
6297 
6298 #ifdef FEAT_TITLE
6299     /* when 'title' changed, may need to change the title; same for 'icon' */
6300     else if ((int *)varp == &p_title)
6301     {
6302 	did_set_title(FALSE);
6303     }
6304 
6305     else if ((int *)varp == &p_icon)
6306     {
6307 	did_set_title(TRUE);
6308     }
6309 #endif
6310 
6311     else if ((int *)varp == &curbuf->b_changed)
6312     {
6313 	if (!value)
6314 	    save_file_ff(curbuf);	/* Buffer is unchanged */
6315 #ifdef FEAT_TITLE
6316 	need_maketitle = TRUE;
6317 #endif
6318 #ifdef FEAT_AUTOCMD
6319 	modified_was_set = value;
6320 #endif
6321     }
6322 
6323 #ifdef BACKSLASH_IN_FILENAME
6324     else if ((int *)varp == &p_ssl)
6325     {
6326 	if (p_ssl)
6327 	{
6328 	    psepc = '/';
6329 	    psepcN = '\\';
6330 	    pseps[0] = '/';
6331 	    psepsN[0] = '\\';
6332 	}
6333 	else
6334 	{
6335 	    psepc = '\\';
6336 	    psepcN = '/';
6337 	    pseps[0] = '\\';
6338 	    psepsN[0] = '/';
6339 	}
6340 
6341 	/* need to adjust the file name arguments and buffer names. */
6342 	buflist_slash_adjust();
6343 	alist_slash_adjust();
6344 # ifdef FEAT_EVAL
6345 	scriptnames_slash_adjust();
6346 # endif
6347     }
6348 #endif
6349 
6350     /* If 'wrap' is set, set w_leftcol to zero. */
6351     else if ((int *)varp == &curwin->w_p_wrap)
6352     {
6353 	if (curwin->w_p_wrap)
6354 	    curwin->w_leftcol = 0;
6355     }
6356 
6357 #ifdef FEAT_WINDOWS
6358     else if ((int *)varp == &p_ea)
6359     {
6360 	if (p_ea && !old_value)
6361 	    win_equal(curwin, FALSE, 0);
6362     }
6363 #endif
6364 
6365     else if ((int *)varp == &p_wiv)
6366     {
6367 	/*
6368 	 * When 'weirdinvert' changed, set/reset 't_xs'.
6369 	 * Then set 'weirdinvert' according to value of 't_xs'.
6370 	 */
6371 	if (p_wiv && !old_value)
6372 	    T_XS = (char_u *)"y";
6373 	else if (!p_wiv && old_value)
6374 	    T_XS = empty_option;
6375 	p_wiv = (*T_XS != NUL);
6376     }
6377 
6378 #if defined(FEAT_BEVAL) && (defined(FEAT_SUN_WORKSHOP) \
6379 	|| defined(FEAT_NETBEANS_INTG))
6380     else if ((int *)varp == &p_beval)
6381     {
6382 	extern BalloonEval	*balloonEval;
6383 
6384 	if (p_beval == TRUE)
6385 	    gui_mch_enable_beval_area(balloonEval);
6386 	else
6387 	    gui_mch_disable_beval_area(balloonEval);
6388     }
6389 
6390     else if ((int *)varp == &p_acd)
6391     {
6392 	if (p_acd && curbuf->b_ffname != NULL
6393 				     && vim_chdirfile(curbuf->b_ffname) == OK)
6394 	    shorten_fnames(TRUE);
6395     }
6396 #endif
6397 
6398 #ifdef FEAT_DIFF
6399     /* 'diff' */
6400     else if ((int *)varp == &curwin->w_p_diff)
6401     {
6402 	/* May add or remove the buffer from the list of diff buffers. */
6403 	diff_buf_adjust(curwin);
6404 # ifdef FEAT_FOLDING
6405 	if (foldmethodIsDiff(curwin))
6406 	    foldUpdateAll(curwin);
6407 # endif
6408     }
6409 #endif
6410 
6411 #ifdef USE_IM_CONTROL
6412     /* 'imdisable' */
6413     else if ((int *)varp == &p_imdisable)
6414     {
6415 	/* Only de-activate it here, it will be enabled when changing mode. */
6416 	if (p_imdisable)
6417 	    im_set_active(FALSE);
6418     }
6419 #endif
6420 
6421 #ifdef FEAT_FKMAP
6422     else if ((int *)varp == &p_altkeymap)
6423     {
6424 	if (old_value != p_altkeymap)
6425 	{
6426 	    if (!p_altkeymap)
6427 	    {
6428 		p_hkmap = p_fkmap;
6429 		p_fkmap = 0;
6430 	    }
6431 	    else
6432 	    {
6433 		p_fkmap = p_hkmap;
6434 		p_hkmap = 0;
6435 	    }
6436 	    (void)init_chartab();
6437 	}
6438     }
6439 
6440     /*
6441      * In case some second language keymapping options have changed, check
6442      * and correct the setting in a consistent way.
6443      */
6444 
6445     /*
6446      * If hkmap or fkmap are set, reset Arabic keymapping.
6447      */
6448     if ((p_hkmap || p_fkmap) && p_altkeymap)
6449     {
6450 	p_altkeymap = p_fkmap;
6451 # ifdef FEAT_ARABIC
6452 	curwin->w_p_arab = FALSE;
6453 # endif
6454 	(void)init_chartab();
6455     }
6456 
6457     /*
6458      * If hkmap set, reset Farsi keymapping.
6459      */
6460     if (p_hkmap && p_altkeymap)
6461     {
6462 	p_altkeymap = 0;
6463 	p_fkmap = 0;
6464 # ifdef FEAT_ARABIC
6465 	curwin->w_p_arab = FALSE;
6466 # endif
6467 	(void)init_chartab();
6468     }
6469 
6470     /*
6471      * If fkmap set, reset Hebrew keymapping.
6472      */
6473     if (p_fkmap && !p_altkeymap)
6474     {
6475 	p_altkeymap = 1;
6476 	p_hkmap = 0;
6477 # ifdef FEAT_ARABIC
6478 	curwin->w_p_arab = FALSE;
6479 # endif
6480 	(void)init_chartab();
6481     }
6482 #endif
6483 
6484 #ifdef FEAT_ARABIC
6485     if ((int *)varp == &curwin->w_p_arab)
6486     {
6487 	if (curwin->w_p_arab)
6488 	{
6489 	    /*
6490 	     * 'arabic' is set, handle various sub-settings.
6491 	     */
6492 	    if (!p_tbidi)
6493 	    {
6494 		/* set rightleft mode */
6495 		if (!curwin->w_p_rl)
6496 		{
6497 		    curwin->w_p_rl = TRUE;
6498 		    changed_window_setting();
6499 		}
6500 
6501 		/* Enable Arabic shaping (major part of what Arabic requires) */
6502 		if (!p_arshape)
6503 		{
6504 		    p_arshape = TRUE;
6505 		    redraw_later_clear();
6506 		}
6507 	    }
6508 
6509 	    /* Arabic requires a utf-8 encoding, inform the user if its not
6510 	     * set. */
6511 	    if (STRCMP(p_enc, "utf-8") != 0)
6512 	    {
6513 		msg_source(hl_attr(HLF_W));
6514 		MSG_ATTR(_("W17: Arabic requires UTF-8, do ':set encoding=utf-8'"),
6515 			hl_attr(HLF_W));
6516 	    }
6517 
6518 # ifdef FEAT_MBYTE
6519 	    /* set 'delcombine' */
6520 	    p_deco = TRUE;
6521 # endif
6522 
6523 # ifdef FEAT_KEYMAP
6524 	    /* Force-set the necessary keymap for arabic */
6525 	    set_option_value((char_u *)"keymap", 0L, (char_u *)"arabic",
6526 								   OPT_LOCAL);
6527 # endif
6528 # ifdef FEAT_FKMAP
6529 	    p_altkeymap = 0;
6530 	    p_hkmap = 0;
6531 	    p_fkmap = 0;
6532 	    (void)init_chartab();
6533 # endif
6534 	}
6535 	else
6536 	{
6537 	    /*
6538 	     * 'arabic' is reset, handle various sub-settings.
6539 	     */
6540 	    if (!p_tbidi)
6541 	    {
6542 		/* reset rightleft mode */
6543 		if (curwin->w_p_rl)
6544 		{
6545 		    curwin->w_p_rl = FALSE;
6546 		    changed_window_setting();
6547 		}
6548 
6549 		/* 'arabicshape' isn't reset, it is a global option and
6550 		 * another window may still need it "on". */
6551 	    }
6552 
6553 	    /* 'delcombine' isn't reset, it is a global option and another
6554 	     * window may still want it "on". */
6555 
6556 # ifdef FEAT_KEYMAP
6557 	    /* Revert to the default keymap */
6558 	    curbuf->b_p_iminsert = B_IMODE_NONE;
6559 	    curbuf->b_p_imsearch = B_IMODE_USE_INSERT;
6560 # endif
6561 	}
6562     }
6563 #endif
6564 
6565     /*
6566      * End of handling side effects for bool options.
6567      */
6568 
6569     options[opt_idx].flags |= P_WAS_SET;
6570 
6571     comp_col();			    /* in case 'ruler' or 'showcmd' changed */
6572     if (curwin->w_curswant != MAXCOL)
6573 	curwin->w_set_curswant = TRUE;  /* in case 'list' changed */
6574     check_redraw(options[opt_idx].flags);
6575 
6576     return NULL;
6577 }
6578 
6579 /*
6580  * Set the value of a number option, and take care of side effects.
6581  * Returns NULL for success, or an error message for an error.
6582  */
6583     static char_u *
6584 set_num_option(opt_idx, varp, value, errbuf, opt_flags)
6585     int		opt_idx;		/* index in options[] table */
6586     char_u	*varp;			/* pointer to the option variable */
6587     long	value;			/* new value */
6588     char_u	*errbuf;		/* buffer for error messages */
6589     int		opt_flags;		/* OPT_LOCAL, OPT_GLOBAL and
6590 					   OPT_MODELINE */
6591 {
6592     char_u	*errmsg = NULL;
6593     long	old_value = *(long *)varp;
6594     long	old_Rows = Rows;	/* remember old Rows */
6595     long	old_Columns = Columns;	/* remember old Columns */
6596     long	*pp = (long *)varp;
6597 
6598 #ifdef FEAT_GUI
6599     need_mouse_correct = TRUE;
6600 #endif
6601 
6602     *pp = value;
6603 #ifdef FEAT_EVAL
6604     /* Remember where the option was set. */
6605     options[opt_idx].scriptID = current_SID;
6606 #endif
6607 
6608     if (curbuf->b_p_sw <= 0)
6609     {
6610 	errmsg = e_positive;
6611 	curbuf->b_p_sw = curbuf->b_p_ts;
6612     }
6613 
6614     /*
6615      * Number options that need some action when changed
6616      */
6617 #ifdef FEAT_WINDOWS
6618     if (pp == &p_wh || pp == &p_hh)
6619     {
6620 	if (p_wh < 1)
6621 	{
6622 	    errmsg = e_positive;
6623 	    p_wh = 1;
6624 	}
6625 	if (p_wmh > p_wh)
6626 	{
6627 	    errmsg = e_winheight;
6628 	    p_wh = p_wmh;
6629 	}
6630 	if (p_hh < 0)
6631 	{
6632 	    errmsg = e_positive;
6633 	    p_hh = 0;
6634 	}
6635 
6636 	/* Change window height NOW */
6637 	if (lastwin != firstwin)
6638 	{
6639 	    if (pp == &p_wh && curwin->w_height < p_wh)
6640 		win_setheight((int)p_wh);
6641 	    if (pp == &p_hh && curbuf->b_help && curwin->w_height < p_hh)
6642 		win_setheight((int)p_hh);
6643 	}
6644     }
6645 
6646     /* 'winminheight' */
6647     else if (pp == &p_wmh)
6648     {
6649 	if (p_wmh < 0)
6650 	{
6651 	    errmsg = e_positive;
6652 	    p_wmh = 0;
6653 	}
6654 	if (p_wmh > p_wh)
6655 	{
6656 	    errmsg = e_winheight;
6657 	    p_wmh = p_wh;
6658 	}
6659 	win_setminheight();
6660     }
6661 
6662 # ifdef FEAT_VERTSPLIT
6663     else if (pp == &p_wiw)
6664     {
6665 	if (p_wiw < 1)
6666 	{
6667 	    errmsg = e_positive;
6668 	    p_wiw = 1;
6669 	}
6670 	if (p_wmw > p_wiw)
6671 	{
6672 	    errmsg = e_winwidth;
6673 	    p_wiw = p_wmw;
6674 	}
6675 
6676 	/* Change window width NOW */
6677 	if (lastwin != firstwin && curwin->w_width < p_wiw)
6678 	    win_setwidth((int)p_wiw);
6679     }
6680 
6681     /* 'winminwidth' */
6682     else if (pp == &p_wmw)
6683     {
6684 	if (p_wmw < 0)
6685 	{
6686 	    errmsg = e_positive;
6687 	    p_wmw = 0;
6688 	}
6689 	if (p_wmw > p_wiw)
6690 	{
6691 	    errmsg = e_winwidth;
6692 	    p_wmw = p_wiw;
6693 	}
6694 	win_setminheight();
6695     }
6696 # endif
6697 
6698 #endif
6699 
6700 #ifdef FEAT_WINDOWS
6701     /* (re)set last window status line */
6702     else if (pp == &p_ls)
6703     {
6704 	last_status(FALSE);
6705     }
6706 #endif
6707 
6708 #ifdef FEAT_GUI
6709     else if (pp == &p_linespace)
6710     {
6711 	if (gui.in_use && gui_mch_adjust_charsize() == OK)
6712 	    gui_set_shellsize(FALSE, FALSE);
6713     }
6714 #endif
6715 
6716 #ifdef FEAT_FOLDING
6717     /* 'foldlevel' */
6718     else if (pp == &curwin->w_p_fdl)
6719     {
6720 	if (curwin->w_p_fdl < 0)
6721 	    curwin->w_p_fdl = 0;
6722 	newFoldLevel();
6723     }
6724 
6725     /* 'foldminlevel' */
6726     else if (pp == &curwin->w_p_fml)
6727     {
6728 	foldUpdateAll(curwin);
6729     }
6730 
6731     /* 'foldnestmax' */
6732     else if (pp == &curwin->w_p_fdn)
6733     {
6734 	if (foldmethodIsSyntax(curwin) || foldmethodIsIndent(curwin))
6735 	    foldUpdateAll(curwin);
6736     }
6737 
6738     /* 'foldcolumn' */
6739     else if (pp == &curwin->w_p_fdc)
6740     {
6741 	if (curwin->w_p_fdc < 0)
6742 	{
6743 	    errmsg = e_positive;
6744 	    curwin->w_p_fdc = 0;
6745 	}
6746 	else if (curwin->w_p_fdc > 12)
6747 	{
6748 	    errmsg = e_invarg;
6749 	    curwin->w_p_fdc = 12;
6750 	}
6751     }
6752 
6753     /* 'shiftwidth' or 'tabstop' */
6754     else if (pp == &curbuf->b_p_sw || pp == &curbuf->b_p_ts)
6755     {
6756 	if (foldmethodIsIndent(curwin))
6757 	    foldUpdateAll(curwin);
6758     }
6759 #endif /* FEAT_FOLDING */
6760 
6761     else if (pp == &curbuf->b_p_iminsert)
6762     {
6763 	if (curbuf->b_p_iminsert < 0 || curbuf->b_p_iminsert > B_IMODE_LAST)
6764 	{
6765 	    errmsg = e_invarg;
6766 	    curbuf->b_p_iminsert = B_IMODE_NONE;
6767 	}
6768 	p_iminsert = curbuf->b_p_iminsert;
6769 	if (termcap_active)	/* don't do this in the alternate screen */
6770 	    showmode();
6771 #if defined(FEAT_WINDOWS) && defined(FEAT_KEYMAP)
6772 	/* Show/unshow value of 'keymap' in status lines. */
6773 	status_redraw_curbuf();
6774 #endif
6775     }
6776 
6777     else if (pp == &curbuf->b_p_imsearch)
6778     {
6779 	if (curbuf->b_p_imsearch < -1 || curbuf->b_p_imsearch > B_IMODE_LAST)
6780 	{
6781 	    errmsg = e_invarg;
6782 	    curbuf->b_p_imsearch = B_IMODE_NONE;
6783 	}
6784 	p_imsearch = curbuf->b_p_imsearch;
6785     }
6786 
6787 #ifdef FEAT_TITLE
6788     /* if 'titlelen' has changed, redraw the title */
6789     else if (pp == &p_titlelen)
6790     {
6791 	if (p_titlelen < 0)
6792 	{
6793 	    errmsg = e_positive;
6794 	    p_titlelen = 85;
6795 	}
6796 	if (starting != NO_SCREEN && old_value != p_titlelen)
6797 	    need_maketitle = TRUE;
6798     }
6799 #endif
6800 
6801     /* if p_ch changed value, change the command line height */
6802     else if (pp == &p_ch)
6803     {
6804 	if (p_ch < 1)
6805 	{
6806 	    errmsg = e_positive;
6807 	    p_ch = 1;
6808 	}
6809 
6810 	/* Only compute the new window layout when startup has been
6811 	 * completed. Otherwise the frame sizes may be wrong. */
6812 	if (p_ch != old_value && full_screen
6813 #ifdef FEAT_GUI
6814 		&& !gui.starting
6815 #endif
6816 	   )
6817 	    command_height(old_value);
6818     }
6819 
6820     /* when 'updatecount' changes from zero to non-zero, open swap files */
6821     else if (pp == &p_uc)
6822     {
6823 	if (p_uc < 0)
6824 	{
6825 	    errmsg = e_positive;
6826 	    p_uc = 100;
6827 	}
6828 	if (p_uc && !old_value)
6829 	    ml_open_files();
6830     }
6831 #ifdef MZSCHEME_GUI_THREADS
6832     else if (pp == &p_mzq)
6833 	mzvim_reset_timer();
6834 #endif
6835 
6836     /* sync undo before 'undolevels' changes */
6837     else if (pp == &p_ul)
6838     {
6839 	/* use the old value, otherwise u_sync() may not work properly */
6840 	p_ul = old_value;
6841 	u_sync();
6842 	p_ul = value;
6843     }
6844 
6845 #ifdef FEAT_LINEBREAK
6846     /* 'numberwidth' must be positive */
6847     else if (pp == &curwin->w_p_nuw)
6848     {
6849 	if (curwin->w_p_nuw < 1)
6850 	{
6851 	    errmsg = e_positive;
6852 	    curwin->w_p_nuw = 1;
6853 	}
6854 	if (curwin->w_p_nuw > 10)
6855 	{
6856 	    errmsg = e_invarg;
6857 	    curwin->w_p_nuw = 10;
6858 	}
6859 	curwin->w_nrwidth_line_count = 0;
6860     }
6861 #endif
6862 
6863     /*
6864      * Check the bounds for numeric options here
6865      */
6866     if (Rows < min_rows() && full_screen)
6867     {
6868 	if (errbuf != NULL)
6869 	{
6870 	    sprintf((char *)errbuf, _("E593: Need at least %d lines"),
6871 								  min_rows());
6872 	    errmsg = errbuf;
6873 	}
6874 	Rows = min_rows();
6875     }
6876     if (Columns < MIN_COLUMNS && full_screen)
6877     {
6878 	if (errbuf != NULL)
6879 	{
6880 	    sprintf((char *)errbuf, _("E594: Need at least %d columns"),
6881 								 MIN_COLUMNS);
6882 	    errmsg = errbuf;
6883 	}
6884 	Columns = MIN_COLUMNS;
6885     }
6886 
6887 #ifdef DJGPP
6888     /* avoid a crash by checking for a too large value of 'columns' */
6889     if (old_Columns != Columns && full_screen && term_console)
6890 	mch_check_columns();
6891 #endif
6892 
6893     /*
6894      * If the screen (shell) height has been changed, assume it is the
6895      * physical screenheight.
6896      */
6897     if (old_Rows != Rows || old_Columns != Columns)
6898     {
6899 	/* Changing the screen size is not allowed while updating the screen. */
6900 	if (updating_screen)
6901 	    *pp = old_value;
6902 	else if (full_screen
6903 #ifdef FEAT_GUI
6904 		&& !gui.starting
6905 #endif
6906 	    )
6907 	    set_shellsize((int)Columns, (int)Rows, TRUE);
6908 	else
6909 	{
6910 	    /* Postpone the resizing; check the size and cmdline position for
6911 	     * messages. */
6912 	    check_shellsize();
6913 	    if (cmdline_row > Rows - p_ch && Rows > p_ch)
6914 		cmdline_row = Rows - p_ch;
6915 	}
6916     }
6917 
6918     if (curbuf->b_p_sts < 0)
6919     {
6920 	errmsg = e_positive;
6921 	curbuf->b_p_sts = 0;
6922     }
6923     if (curbuf->b_p_ts <= 0)
6924     {
6925 	errmsg = e_positive;
6926 	curbuf->b_p_ts = 8;
6927     }
6928     if (curbuf->b_p_tw < 0)
6929     {
6930 	errmsg = e_positive;
6931 	curbuf->b_p_tw = 0;
6932     }
6933     if (p_tm < 0)
6934     {
6935 	errmsg = e_positive;
6936 	p_tm = 0;
6937     }
6938     if ((curwin->w_p_scr <= 0
6939 		|| (curwin->w_p_scr > curwin->w_height
6940 		    && curwin->w_height > 0))
6941 	    && full_screen)
6942     {
6943 	if (pp == &(curwin->w_p_scr))
6944 	{
6945 	    if (curwin->w_p_scr != 0)
6946 		errmsg = e_scroll;
6947 	    win_comp_scroll(curwin);
6948 	}
6949 	/* If 'scroll' became invalid because of a side effect silently adjust
6950 	 * it. */
6951 	else if (curwin->w_p_scr <= 0)
6952 	    curwin->w_p_scr = 1;
6953 	else /* curwin->w_p_scr > curwin->w_height */
6954 	    curwin->w_p_scr = curwin->w_height;
6955     }
6956     if (p_report < 0)
6957     {
6958 	errmsg = e_positive;
6959 	p_report = 1;
6960     }
6961     if ((p_sj < 0 || p_sj >= Rows) && full_screen)
6962     {
6963 	if (Rows != old_Rows)	/* Rows changed, just adjust p_sj */
6964 	    p_sj = Rows / 2;
6965 	else
6966 	{
6967 	    errmsg = e_scroll;
6968 	    p_sj = 1;
6969 	}
6970     }
6971     if (p_so < 0 && full_screen)
6972     {
6973 	errmsg = e_scroll;
6974 	p_so = 0;
6975     }
6976     if (p_siso < 0 && full_screen)
6977     {
6978 	errmsg = e_positive;
6979 	p_siso = 0;
6980     }
6981 #ifdef FEAT_CMDWIN
6982     if (p_cwh < 1)
6983     {
6984 	errmsg = e_positive;
6985 	p_cwh = 1;
6986     }
6987 #endif
6988     if (p_ut < 0)
6989     {
6990 	errmsg = e_positive;
6991 	p_ut = 2000;
6992     }
6993     if (p_ss < 0)
6994     {
6995 	errmsg = e_positive;
6996 	p_ss = 0;
6997     }
6998 
6999     /* May set global value for local option. */
7000     if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0)
7001 	*(long *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) = *pp;
7002 
7003     options[opt_idx].flags |= P_WAS_SET;
7004 
7005     comp_col();			    /* in case 'columns' or 'ls' changed */
7006     if (curwin->w_curswant != MAXCOL)
7007 	curwin->w_set_curswant = TRUE;  /* in case 'tabstop' changed */
7008     check_redraw(options[opt_idx].flags);
7009 
7010     return errmsg;
7011 }
7012 
7013 /*
7014  * Called after an option changed: check if something needs to be redrawn.
7015  */
7016     static void
7017 check_redraw(flags)
7018     long_u	flags;
7019 {
7020     /* Careful: P_RCLR and P_RALL are a combination of other P_ flags */
7021     int		clear = (flags & P_RCLR) == P_RCLR;
7022     int		all = ((flags & P_RALL) == P_RALL || clear);
7023 
7024 #ifdef FEAT_WINDOWS
7025     if ((flags & P_RSTAT) || all)	/* mark all status lines dirty */
7026 	status_redraw_all();
7027 #endif
7028 
7029     if ((flags & P_RBUF) || (flags & P_RWIN) || all)
7030 	changed_window_setting();
7031     if (flags & P_RBUF)
7032 	redraw_curbuf_later(NOT_VALID);
7033     if (clear)
7034 	redraw_all_later(CLEAR);
7035     else if (all)
7036 	redraw_all_later(NOT_VALID);
7037 }
7038 
7039 /*
7040  * Find index for option 'arg'.
7041  * Return -1 if not found.
7042  */
7043     static int
7044 findoption(arg)
7045     char_u *arg;
7046 {
7047     int		    opt_idx;
7048     char	    *s, *p;
7049     static short    quick_tab[27] = {0, 0};	/* quick access table */
7050     int		    is_term_opt;
7051 
7052     /*
7053      * For first call: Initialize the quick-access table.
7054      * It contains the index for the first option that starts with a certain
7055      * letter.  There are 26 letters, plus the first "t_" option.
7056      */
7057     if (quick_tab[1] == 0)
7058     {
7059 	p = options[0].fullname;
7060 	for (opt_idx = 1; (s = options[opt_idx].fullname) != NULL; opt_idx++)
7061 	{
7062 	    if (s[0] != p[0])
7063 	    {
7064 		if (s[0] == 't' && s[1] == '_')
7065 		    quick_tab[26] = opt_idx;
7066 		else
7067 		    quick_tab[CharOrdLow(s[0])] = opt_idx;
7068 	    }
7069 	    p = s;
7070 	}
7071     }
7072 
7073     /*
7074      * Check for name starting with an illegal character.
7075      */
7076 #ifdef EBCDIC
7077     if (!islower(arg[0]))
7078 #else
7079     if (arg[0] < 'a' || arg[0] > 'z')
7080 #endif
7081 	return -1;
7082 
7083     is_term_opt = (arg[0] == 't' && arg[1] == '_');
7084     if (is_term_opt)
7085 	opt_idx = quick_tab[26];
7086     else
7087 	opt_idx = quick_tab[CharOrdLow(arg[0])];
7088     for ( ; (s = options[opt_idx].fullname) != NULL; opt_idx++)
7089     {
7090 	if (STRCMP(arg, s) == 0)		    /* match full name */
7091 	    break;
7092     }
7093     if (s == NULL && !is_term_opt)
7094     {
7095 	opt_idx = quick_tab[CharOrdLow(arg[0])];
7096 	for ( ; options[opt_idx].fullname != NULL; opt_idx++)
7097 	{
7098 	    s = options[opt_idx].shortname;
7099 	    if (s != NULL && STRCMP(arg, s) == 0)   /* match short name */
7100 		break;
7101 	    s = NULL;
7102 	}
7103     }
7104     if (s == NULL)
7105 	opt_idx = -1;
7106     return opt_idx;
7107 }
7108 
7109 #if defined(FEAT_EVAL) || defined(FEAT_TCL) || defined(FEAT_MZSCHEME)
7110 /*
7111  * Get the value for an option.
7112  *
7113  * Returns:
7114  * Number or Toggle option: 1, *numval gets value.
7115  *	     String option: 0, *stringval gets allocated string.
7116  * Hidden Number or Toggle option: -1.
7117  *	     hidden String option: -2.
7118  *		   unknown option: -3.
7119  */
7120     int
7121 get_option_value(name, numval, stringval, opt_flags)
7122     char_u	*name;
7123     long	*numval;
7124     char_u	**stringval;	    /* NULL when only checking existance */
7125     int		opt_flags;
7126 {
7127     int		opt_idx;
7128     char_u	*varp;
7129 
7130     opt_idx = findoption(name);
7131     if (opt_idx < 0)		    /* unknown option */
7132 	return -3;
7133 
7134     varp = get_varp_scope(&(options[opt_idx]), opt_flags);
7135 
7136     if (options[opt_idx].flags & P_STRING)
7137     {
7138 	if (varp == NULL)		    /* hidden option */
7139 	    return -2;
7140 	if (stringval != NULL)
7141 	{
7142 #ifdef FEAT_CRYPT
7143 	    /* never return the value of the crypt key */
7144 	    if ((char_u **)varp == &curbuf->b_p_key)
7145 		*stringval = vim_strsave((char_u *)"*****");
7146 	    else
7147 #endif
7148 		*stringval = vim_strsave(*(char_u **)(varp));
7149 	}
7150 	return 0;
7151     }
7152 
7153     if (varp == NULL)		    /* hidden option */
7154 	return -1;
7155     if (options[opt_idx].flags & P_NUM)
7156 	*numval = *(long *)varp;
7157     else
7158     {
7159 	/* Special case: 'modified' is b_changed, but we also want to consider
7160 	 * it set when 'ff' or 'fenc' changed. */
7161 	if ((int *)varp == &curbuf->b_changed)
7162 	    *numval = curbufIsChanged();
7163 	else
7164 	    *numval = *(int *)varp;
7165     }
7166     return 1;
7167 }
7168 #endif
7169 
7170 /*
7171  * Set the value of option "name".
7172  * Use "string" for string options, use "number" for other options.
7173  */
7174     void
7175 set_option_value(name, number, string, opt_flags)
7176     char_u	*name;
7177     long	number;
7178     char_u	*string;
7179     int		opt_flags;	/* OPT_LOCAL or 0 (both) */
7180 {
7181     int		opt_idx;
7182     char_u	*varp;
7183     int		flags;
7184 
7185     opt_idx = findoption(name);
7186     if (opt_idx == -1)
7187 	EMSG2(_("E355: Unknown option: %s"), name);
7188     else
7189     {
7190 	flags = options[opt_idx].flags;
7191 #ifdef HAVE_SANDBOX
7192 	/* Disallow changing some options in the sandbox */
7193 	if (sandbox > 0 && (flags & P_SECURE))
7194 	    EMSG(_(e_sandbox));
7195 	else
7196 #endif
7197 	  if (flags & P_STRING)
7198 	    set_string_option(opt_idx, string, opt_flags);
7199 	else
7200 	{
7201 	    varp = get_varp(&options[opt_idx]);
7202 	    if (varp != NULL)	/* hidden option is not changed */
7203 	    {
7204 		if (flags & P_NUM)
7205 		    (void)set_num_option(opt_idx, varp, number, NULL, opt_flags);
7206 		else
7207 		    (void)set_bool_option(opt_idx, varp, (int)number, opt_flags);
7208 	    }
7209 	}
7210     }
7211 }
7212 
7213 /*
7214  * Get the terminal code for a terminal option.
7215  * Returns NULL when not found.
7216  */
7217     char_u *
7218 get_term_code(tname)
7219     char_u	*tname;
7220 {
7221     int	    opt_idx;
7222     char_u  *varp;
7223 
7224     if (tname[0] != 't' || tname[1] != '_' ||
7225 	    tname[2] == NUL || tname[3] == NUL)
7226 	return NULL;
7227     if ((opt_idx = findoption(tname)) >= 0)
7228     {
7229 	varp = get_varp(&(options[opt_idx]));
7230 	if (varp != NULL)
7231 	    varp = *(char_u **)(varp);
7232 	return varp;
7233     }
7234     return find_termcode(tname + 2);
7235 }
7236 
7237     char_u *
7238 get_highlight_default()
7239 {
7240     int i;
7241 
7242     i = findoption((char_u *)"hl");
7243     if (i >= 0)
7244 	return options[i].def_val[VI_DEFAULT];
7245     return (char_u *)NULL;
7246 }
7247 
7248 /*
7249  * Translate a string like "t_xx", "<t_xx>" or "<S-Tab>" to a key number.
7250  */
7251     static int
7252 find_key_option(arg)
7253     char_u *arg;
7254 {
7255     int		key;
7256     int		modifiers;
7257 
7258     /*
7259      * Don't use get_special_key_code() for t_xx, we don't want it to call
7260      * add_termcap_entry().
7261      */
7262     if (arg[0] == 't' && arg[1] == '_' && arg[2] && arg[3])
7263 	key = TERMCAP2KEY(arg[2], arg[3]);
7264     else
7265     {
7266 	--arg;			    /* put arg at the '<' */
7267 	modifiers = 0;
7268 	key = find_special_key(&arg, &modifiers, TRUE);
7269 	if (modifiers)		    /* can't handle modifiers here */
7270 	    key = 0;
7271     }
7272     return key;
7273 }
7274 
7275 /*
7276  * if 'all' == 0: show changed options
7277  * if 'all' == 1: show all normal options
7278  * if 'all' == 2: show all terminal options
7279  */
7280     static void
7281 showoptions(all, opt_flags)
7282     int		all;
7283     int		opt_flags;	/* OPT_LOCAL and/or OPT_GLOBAL */
7284 {
7285     struct vimoption	*p;
7286     int			col;
7287     int			isterm;
7288     char_u		*varp;
7289     struct vimoption	**items;
7290     int			item_count;
7291     int			run;
7292     int			row, rows;
7293     int			cols;
7294     int			i;
7295     int			len;
7296 
7297 #define INC 20
7298 #define GAP 3
7299 
7300     items = (struct vimoption **)alloc((unsigned)(sizeof(struct vimoption *) *
7301 								PARAM_COUNT));
7302     if (items == NULL)
7303 	return;
7304 
7305     /* Highlight title */
7306     if (all == 2)
7307 	MSG_PUTS_TITLE(_("\n--- Terminal codes ---"));
7308     else if (opt_flags & OPT_GLOBAL)
7309 	MSG_PUTS_TITLE(_("\n--- Global option values ---"));
7310     else if (opt_flags & OPT_LOCAL)
7311 	MSG_PUTS_TITLE(_("\n--- Local option values ---"));
7312     else
7313 	MSG_PUTS_TITLE(_("\n--- Options ---"));
7314 
7315     /*
7316      * do the loop two times:
7317      * 1. display the short items
7318      * 2. display the long items (only strings and numbers)
7319      */
7320     for (run = 1; run <= 2 && !got_int; ++run)
7321     {
7322 	/*
7323 	 * collect the items in items[]
7324 	 */
7325 	item_count = 0;
7326 	for (p = &options[0]; p->fullname != NULL; p++)
7327 	{
7328 	    varp = NULL;
7329 	    isterm = istermoption(p);
7330 	    if (opt_flags != 0)
7331 	    {
7332 		if (p->indir != PV_NONE && !isterm)
7333 		    varp = get_varp_scope(p, opt_flags);
7334 	    }
7335 	    else
7336 		varp = get_varp(p);
7337 	    if (varp != NULL
7338 		    && ((all == 2 && isterm)
7339 			|| (all == 1 && !isterm)
7340 			|| (all == 0 && !optval_default(p, varp))))
7341 	    {
7342 		if (p->flags & P_BOOL)
7343 		    len = 1;		/* a toggle option fits always */
7344 		else
7345 		{
7346 		    option_value2string(p, opt_flags);
7347 		    len = (int)STRLEN(p->fullname) + vim_strsize(NameBuff) + 1;
7348 		}
7349 		if ((len <= INC - GAP && run == 1) ||
7350 						(len > INC - GAP && run == 2))
7351 		    items[item_count++] = p;
7352 	    }
7353 	}
7354 
7355 	/*
7356 	 * display the items
7357 	 */
7358 	if (run == 1)
7359 	{
7360 	    cols = (Columns + GAP - 3) / INC;
7361 	    if (cols == 0)
7362 		cols = 1;
7363 	    rows = (item_count + cols - 1) / cols;
7364 	}
7365 	else	/* run == 2 */
7366 	    rows = item_count;
7367 	for (row = 0; row < rows && !got_int; ++row)
7368 	{
7369 	    msg_putchar('\n');			/* go to next line */
7370 	    if (got_int)			/* 'q' typed in more */
7371 		break;
7372 	    col = 0;
7373 	    for (i = row; i < item_count; i += rows)
7374 	    {
7375 		msg_col = col;			/* make columns */
7376 		showoneopt(items[i], opt_flags);
7377 		col += INC;
7378 	    }
7379 	    out_flush();
7380 	    ui_breakcheck();
7381 	}
7382     }
7383     vim_free(items);
7384 }
7385 
7386 /*
7387  * Return TRUE if option "p" has its default value.
7388  */
7389     static int
7390 optval_default(p, varp)
7391     struct vimoption	*p;
7392     char_u		*varp;
7393 {
7394     int		dvi;
7395 
7396     if (varp == NULL)
7397 	return TRUE;	    /* hidden option is always at default */
7398     dvi = ((p->flags & P_VI_DEF) || p_cp) ? VI_DEFAULT : VIM_DEFAULT;
7399     if (p->flags & P_NUM)
7400 	return (*(long *)varp == (long)p->def_val[dvi]);
7401     if (p->flags & P_BOOL)
7402 			/* the cast to long is required for Manx C */
7403 	return (*(int *)varp == (int)(long)p->def_val[dvi]);
7404     /* P_STRING */
7405     return (STRCMP(*(char_u **)varp, p->def_val[dvi]) == 0);
7406 }
7407 
7408 /*
7409  * showoneopt: show the value of one option
7410  * must not be called with a hidden option!
7411  */
7412     static void
7413 showoneopt(p, opt_flags)
7414     struct vimoption	*p;
7415     int			opt_flags;	/* OPT_LOCAL or OPT_GLOBAL */
7416 {
7417     char_u		*varp;
7418 
7419     varp = get_varp_scope(p, opt_flags);
7420 
7421     /* for 'modified' we also need to check if 'ff' or 'fenc' changed. */
7422     if ((p->flags & P_BOOL) && ((int *)varp == &curbuf->b_changed
7423 					? !curbufIsChanged() : !*(int *)varp))
7424 	MSG_PUTS("no");
7425     else if ((p->flags & P_BOOL) && *(int *)varp < 0)
7426 	MSG_PUTS("--");
7427     else
7428 	MSG_PUTS("  ");
7429     MSG_PUTS(p->fullname);
7430     if (!(p->flags & P_BOOL))
7431     {
7432 	msg_putchar('=');
7433 	/* put value string in NameBuff */
7434 	option_value2string(p, opt_flags);
7435 	msg_outtrans(NameBuff);
7436     }
7437 }
7438 
7439 /*
7440  * Write modified options as ":set" commands to a file.
7441  *
7442  * There are three values for "opt_flags":
7443  * OPT_GLOBAL:		   Write global option values and fresh values of
7444  *			   buffer-local options (used for start of a session
7445  *			   file).
7446  * OPT_GLOBAL + OPT_LOCAL: Idem, add fresh values of window-local options for
7447  *			   curwin (used for a vimrc file).
7448  * OPT_LOCAL:		   Write buffer-local option values for curbuf, fresh
7449  *			   and local values for window-local options of
7450  *			   curwin.  Local values are also written when at the
7451  *			   default value, because a modeline or autocommand
7452  *			   may have set them when doing ":edit file" and the
7453  *			   user has set them back at the default or fresh
7454  *			   value.
7455  *			   When "local_only" is TRUE, don't write fresh
7456  *			   values, only local values (for ":mkview").
7457  * (fresh value = value used for a new buffer or window for a local option).
7458  *
7459  * Return FAIL on error, OK otherwise.
7460  */
7461     int
7462 makeset(fd, opt_flags, local_only)
7463     FILE	*fd;
7464     int		opt_flags;
7465     int		local_only;
7466 {
7467     struct vimoption	*p;
7468     char_u		*varp;			/* currently used value */
7469     char_u		*varp_fresh;		/* local value */
7470     char_u		*varp_local = NULL;	/* fresh value */
7471     char		*cmd;
7472     int			round;
7473 
7474     /*
7475      * The options that don't have a default (terminal name, columns, lines)
7476      * are never written.  Terminal options are also not written.
7477      */
7478     for (p = &options[0]; !istermoption(p); p++)
7479 	if (!(p->flags & P_NO_MKRC) && !istermoption(p))
7480 	{
7481 	    /* skip global option when only doing locals */
7482 	    if (p->indir == PV_NONE && !(opt_flags & OPT_GLOBAL))
7483 		continue;
7484 
7485 	    /* Do not store options like 'bufhidden' and 'syntax' in a vimrc
7486 	     * file, they are always buffer-specific. */
7487 	    if ((opt_flags & OPT_GLOBAL) && (p->flags & P_NOGLOB))
7488 		continue;
7489 
7490 	    /* Global values are only written when not at the default value. */
7491 	    varp = get_varp_scope(p, opt_flags);
7492 	    if ((opt_flags & OPT_GLOBAL) && optval_default(p, varp))
7493 		continue;
7494 
7495 	    round = 2;
7496 	    if (p->indir != PV_NONE)
7497 	    {
7498 		if (p->var == VAR_WIN)
7499 		{
7500 		    /* skip window-local option when only doing globals */
7501 		    if (!(opt_flags & OPT_LOCAL))
7502 			continue;
7503 		    /* When fresh value of window-local option is not at the
7504 		     * default, need to write it too. */
7505 		    if (!(opt_flags & OPT_GLOBAL) && !local_only)
7506 		    {
7507 			varp_fresh = get_varp_scope(p, OPT_GLOBAL);
7508 			if (!optval_default(p, varp_fresh))
7509 			{
7510 			    round = 1;
7511 			    varp_local = varp;
7512 			    varp = varp_fresh;
7513 			}
7514 		    }
7515 		}
7516 	    }
7517 
7518 	    /* Round 1: fresh value for window-local options.
7519 	     * Round 2: other values */
7520 	    for ( ; round <= 2; varp = varp_local, ++round)
7521 	    {
7522 		if (round == 1 || (opt_flags & OPT_GLOBAL))
7523 		    cmd = "set";
7524 		else
7525 		    cmd = "setlocal";
7526 
7527 		if (p->flags & P_BOOL)
7528 		{
7529 		    if (put_setbool(fd, cmd, p->fullname, *(int *)varp) == FAIL)
7530 			return FAIL;
7531 		}
7532 		else if (p->flags & P_NUM)
7533 		{
7534 		    if (put_setnum(fd, cmd, p->fullname, (long *)varp) == FAIL)
7535 			return FAIL;
7536 		}
7537 		else    /* P_STRING */
7538 		{
7539 		    /* Don't set 'syntax' and 'filetype' again if the value is
7540 		     * already right, avoids reloading the syntax file. */
7541 		    if (p->indir == PV_SYN || p->indir == PV_FT)
7542 		    {
7543 			if (fprintf(fd, "if &%s != '%s'", p->fullname,
7544 						       *(char_u **)(varp)) < 0
7545 				|| put_eol(fd) < 0)
7546 			    return FAIL;
7547 		    }
7548 		    if (put_setstring(fd, cmd, p->fullname, (char_u **)varp,
7549 					  (p->flags & P_EXPAND) != 0) == FAIL)
7550 			return FAIL;
7551 		    if (p->indir == PV_SYN || p->indir == PV_FT)
7552 		    {
7553 			if (put_line(fd, "endif") == FAIL)
7554 			    return FAIL;
7555 		    }
7556 		}
7557 	    }
7558 	}
7559     return OK;
7560 }
7561 
7562 #if defined(FEAT_FOLDING) || defined(PROTO)
7563 /*
7564  * Generate set commands for the local fold options only.  Used when
7565  * 'sessionoptions' or 'viewoptions' contains "folds" but not "options".
7566  */
7567     int
7568 makefoldset(fd)
7569     FILE	*fd;
7570 {
7571     if (put_setstring(fd, "setlocal", "fdm", &curwin->w_p_fdm, FALSE) == FAIL
7572 # ifdef FEAT_EVAL
7573 	    || put_setstring(fd, "setlocal", "fde", &curwin->w_p_fde, FALSE)
7574 								       == FAIL
7575 # endif
7576 	    || put_setstring(fd, "setlocal", "fmr", &curwin->w_p_fmr, FALSE)
7577 								       == FAIL
7578 	    || put_setstring(fd, "setlocal", "fdi", &curwin->w_p_fdi, FALSE)
7579 								       == FAIL
7580 	    || put_setnum(fd, "setlocal", "fdl", &curwin->w_p_fdl) == FAIL
7581 	    || put_setnum(fd, "setlocal", "fml", &curwin->w_p_fml) == FAIL
7582 	    || put_setnum(fd, "setlocal", "fdn", &curwin->w_p_fdn) == FAIL
7583 	    || put_setbool(fd, "setlocal", "fen", curwin->w_p_fen) == FAIL
7584 	    )
7585 	return FAIL;
7586 
7587     return OK;
7588 }
7589 #endif
7590 
7591     static int
7592 put_setstring(fd, cmd, name, valuep, expand)
7593     FILE	*fd;
7594     char	*cmd;
7595     char	*name;
7596     char_u	**valuep;
7597     int		expand;
7598 {
7599     char_u	*s;
7600     char_u	buf[MAXPATHL];
7601 
7602     if (fprintf(fd, "%s %s=", cmd, name) < 0)
7603 	return FAIL;
7604     if (*valuep != NULL)
7605     {
7606 	/* Output 'pastetoggle' as key names.  For other
7607 	 * options some characters have to be escaped with
7608 	 * CTRL-V or backslash */
7609 	if (valuep == &p_pt)
7610 	{
7611 	    s = *valuep;
7612 	    while (*s != NUL)
7613 		if (fputs((char *)str2special(&s, FALSE), fd) < 0)
7614 		    return FAIL;
7615 	}
7616 	else if (expand)
7617 	{
7618 	    home_replace(NULL, *valuep, buf, MAXPATHL, FALSE);
7619 	    if (put_escstr(fd, buf, 2) == FAIL)
7620 		return FAIL;
7621 	}
7622 	else if (put_escstr(fd, *valuep, 2) == FAIL)
7623 	    return FAIL;
7624     }
7625     if (put_eol(fd) < 0)
7626 	return FAIL;
7627     return OK;
7628 }
7629 
7630     static int
7631 put_setnum(fd, cmd, name, valuep)
7632     FILE	*fd;
7633     char	*cmd;
7634     char	*name;
7635     long	*valuep;
7636 {
7637     long	wc;
7638 
7639     if (fprintf(fd, "%s %s=", cmd, name) < 0)
7640 	return FAIL;
7641     if (wc_use_keyname((char_u *)valuep, &wc))
7642     {
7643 	/* print 'wildchar' and 'wildcharm' as a key name */
7644 	if (fputs((char *)get_special_key_name((int)wc, 0), fd) < 0)
7645 	    return FAIL;
7646     }
7647     else if (fprintf(fd, "%ld", *valuep) < 0)
7648 	return FAIL;
7649     if (put_eol(fd) < 0)
7650 	return FAIL;
7651     return OK;
7652 }
7653 
7654     static int
7655 put_setbool(fd, cmd, name, value)
7656     FILE	*fd;
7657     char	*cmd;
7658     char	*name;
7659     int		value;
7660 {
7661     if (fprintf(fd, "%s %s%s", cmd, value ? "" : "no", name) < 0
7662 	    || put_eol(fd) < 0)
7663 	return FAIL;
7664     return OK;
7665 }
7666 
7667 /*
7668  * Clear all the terminal options.
7669  * If the option has been allocated, free the memory.
7670  * Terminal options are never hidden or indirect.
7671  */
7672     void
7673 clear_termoptions()
7674 {
7675     struct vimoption   *p;
7676 
7677     /*
7678      * Reset a few things before clearing the old options. This may cause
7679      * outputting a few things that the terminal doesn't understand, but the
7680      * screen will be cleared later, so this is OK.
7681      */
7682 #ifdef FEAT_MOUSE_TTY
7683     mch_setmouse(FALSE);	    /* switch mouse off */
7684 #endif
7685 #ifdef FEAT_TITLE
7686     mch_restore_title(3);	    /* restore window titles */
7687 #endif
7688 #if defined(FEAT_XCLIPBOARD) && defined(FEAT_GUI)
7689     /* When starting the GUI close the display opened for the clipboard.
7690      * After restoring the title, because that will need the display. */
7691     if (gui.starting)
7692 	clear_xterm_clip();
7693 #endif
7694 #ifdef WIN3264
7695     /*
7696      * Check if this is allowed now.
7697      */
7698     if (can_end_termcap_mode(FALSE) == TRUE)
7699 #endif
7700 	stoptermcap();			/* stop termcap mode */
7701 
7702     for (p = &options[0]; p->fullname != NULL; p++)
7703 	if (istermoption(p))
7704 	{
7705 	    if (p->flags & P_ALLOCED)
7706 		free_string_option(*(char_u **)(p->var));
7707 	    if (p->flags & P_DEF_ALLOCED)
7708 		free_string_option(p->def_val[VI_DEFAULT]);
7709 	    *(char_u **)(p->var) = empty_option;
7710 	    p->def_val[VI_DEFAULT] = empty_option;
7711 	    p->flags &= ~(P_ALLOCED|P_DEF_ALLOCED);
7712 	}
7713     clear_termcodes();
7714 }
7715 
7716 /*
7717  * Set the terminal option defaults to the current value.
7718  * Used after setting the terminal name.
7719  */
7720     void
7721 set_term_defaults()
7722 {
7723     struct vimoption   *p;
7724 
7725     for (p = &options[0]; p->fullname != NULL; p++)
7726     {
7727 	if (istermoption(p) && p->def_val[VI_DEFAULT] != *(char_u **)(p->var))
7728 	{
7729 	    if (p->flags & P_DEF_ALLOCED)
7730 	    {
7731 		free_string_option(p->def_val[VI_DEFAULT]);
7732 		p->flags &= ~P_DEF_ALLOCED;
7733 	    }
7734 	    p->def_val[VI_DEFAULT] = *(char_u **)(p->var);
7735 	    if (p->flags & P_ALLOCED)
7736 	    {
7737 		p->flags |= P_DEF_ALLOCED;
7738 		p->flags &= ~P_ALLOCED;	 /* don't free the value now */
7739 	    }
7740 	}
7741     }
7742 }
7743 
7744 /*
7745  * return TRUE if 'p' starts with 't_'
7746  */
7747     static int
7748 istermoption(p)
7749     struct vimoption *p;
7750 {
7751     return (p->fullname[0] == 't' && p->fullname[1] == '_');
7752 }
7753 
7754 /*
7755  * Compute columns for ruler and shown command. 'sc_col' is also used to
7756  * decide what the maximum length of a message on the status line can be.
7757  * If there is a status line for the last window, 'sc_col' is independent
7758  * of 'ru_col'.
7759  */
7760 
7761 #define COL_RULER 17	    /* columns needed by standard ruler */
7762 
7763     void
7764 comp_col()
7765 {
7766 #if defined(FEAT_CMDL_INFO) && defined(FEAT_WINDOWS)
7767     int last_has_status = (p_ls == 2 || (p_ls == 1 && firstwin != lastwin));
7768 
7769     sc_col = 0;
7770     ru_col = 0;
7771     if (p_ru)
7772     {
7773 #ifdef FEAT_STL_OPT
7774 	ru_col = (ru_wid ? ru_wid : COL_RULER) + 1;
7775 #else
7776 	ru_col = COL_RULER + 1;
7777 #endif
7778 	/* no last status line, adjust sc_col */
7779 	if (!last_has_status)
7780 	    sc_col = ru_col;
7781     }
7782     if (p_sc)
7783     {
7784 	sc_col += SHOWCMD_COLS;
7785 	if (!p_ru || last_has_status)	    /* no need for separating space */
7786 	    ++sc_col;
7787     }
7788     sc_col = Columns - sc_col;
7789     ru_col = Columns - ru_col;
7790     if (sc_col <= 0)		/* screen too narrow, will become a mess */
7791 	sc_col = 1;
7792     if (ru_col <= 0)
7793 	ru_col = 1;
7794 #else
7795     sc_col = Columns;
7796     ru_col = Columns;
7797 #endif
7798 }
7799 
7800 /*
7801  * Get pointer to option variable, depending on local or global scope.
7802  */
7803     static char_u *
7804 get_varp_scope(p, opt_flags)
7805     struct vimoption	*p;
7806     int			opt_flags;
7807 {
7808     if ((opt_flags & OPT_GLOBAL) && p->indir != PV_NONE)
7809     {
7810 	if (p->var == VAR_WIN)
7811 	    return (char_u *)GLOBAL_WO(get_varp(p));
7812 	return p->var;
7813     }
7814     if ((opt_flags & OPT_LOCAL) && (int)p->indir >= PV_BOTH)
7815     {
7816 	switch ((int)p->indir)
7817 	{
7818 #ifdef FEAT_QUICKFIX
7819 	    case OPT_BOTH(PV_GP):   return (char_u *)&(curbuf->b_p_gp);
7820 	    case OPT_BOTH(PV_MP):   return (char_u *)&(curbuf->b_p_mp);
7821 	    case OPT_BOTH(PV_EFM):  return (char_u *)&(curbuf->b_p_efm);
7822 #endif
7823 	    case OPT_BOTH(PV_EP):   return (char_u *)&(curbuf->b_p_ep);
7824 	    case OPT_BOTH(PV_KP):   return (char_u *)&(curbuf->b_p_kp);
7825 	    case OPT_BOTH(PV_PATH): return (char_u *)&(curbuf->b_p_path);
7826 	    case OPT_BOTH(PV_AR):   return (char_u *)&(curbuf->b_p_ar);
7827 	    case OPT_BOTH(PV_TAGS): return (char_u *)&(curbuf->b_p_tags);
7828 #ifdef FEAT_FIND_ID
7829 	    case OPT_BOTH(PV_DEF):  return (char_u *)&(curbuf->b_p_def);
7830 	    case OPT_BOTH(PV_INC):  return (char_u *)&(curbuf->b_p_inc);
7831 #endif
7832 #ifdef FEAT_INS_EXPAND
7833 	    case OPT_BOTH(PV_DICT): return (char_u *)&(curbuf->b_p_dict);
7834 	    case OPT_BOTH(PV_TSR):  return (char_u *)&(curbuf->b_p_tsr);
7835 #endif
7836 	}
7837 	return NULL; /* "cannot happen" */
7838     }
7839     return get_varp(p);
7840 }
7841 
7842 /*
7843  * Get pointer to option variable.
7844  */
7845     static char_u *
7846 get_varp(p)
7847     struct vimoption	*p;
7848 {
7849     /* hidden option, always return NULL */
7850     if (p->var == NULL)
7851 	return NULL;
7852 
7853     switch ((int)p->indir)
7854     {
7855 	case PV_NONE:	return p->var;
7856 
7857 	/* global option with local value: use local value if it's been set */
7858 	case OPT_BOTH(PV_EP):	return *curbuf->b_p_ep != NUL
7859 				    ? (char_u *)&curbuf->b_p_ep : p->var;
7860 	case OPT_BOTH(PV_KP):	return *curbuf->b_p_kp != NUL
7861 				    ? (char_u *)&curbuf->b_p_kp : p->var;
7862 	case OPT_BOTH(PV_PATH):	return *curbuf->b_p_path != NUL
7863 				    ? (char_u *)&(curbuf->b_p_path) : p->var;
7864 	case OPT_BOTH(PV_AR):	return curbuf->b_p_ar >= 0
7865 				    ? (char_u *)&(curbuf->b_p_ar) : p->var;
7866 	case OPT_BOTH(PV_TAGS):	return *curbuf->b_p_tags != NUL
7867 				    ? (char_u *)&(curbuf->b_p_tags) : p->var;
7868 #ifdef FEAT_FIND_ID
7869 	case OPT_BOTH(PV_DEF):	return *curbuf->b_p_def != NUL
7870 				    ? (char_u *)&(curbuf->b_p_def) : p->var;
7871 	case OPT_BOTH(PV_INC):	return *curbuf->b_p_inc != NUL
7872 				    ? (char_u *)&(curbuf->b_p_inc) : p->var;
7873 #endif
7874 #ifdef FEAT_INS_EXPAND
7875 	case OPT_BOTH(PV_DICT):	return *curbuf->b_p_dict != NUL
7876 				    ? (char_u *)&(curbuf->b_p_dict) : p->var;
7877 	case OPT_BOTH(PV_TSR):	return *curbuf->b_p_tsr != NUL
7878 				    ? (char_u *)&(curbuf->b_p_tsr) : p->var;
7879 #endif
7880 #ifdef FEAT_QUICKFIX
7881 	case OPT_BOTH(PV_GP):	return *curbuf->b_p_gp != NUL
7882 				    ? (char_u *)&(curbuf->b_p_gp) : p->var;
7883 	case OPT_BOTH(PV_MP):	return *curbuf->b_p_mp != NUL
7884 				    ? (char_u *)&(curbuf->b_p_mp) : p->var;
7885 	case OPT_BOTH(PV_EFM):	return *curbuf->b_p_efm != NUL
7886 				    ? (char_u *)&(curbuf->b_p_efm) : p->var;
7887 #endif
7888 
7889 #ifdef FEAT_ARABIC
7890 	case PV_ARAB:	return (char_u *)&(curwin->w_p_arab);
7891 #endif
7892 	case PV_LIST:	return (char_u *)&(curwin->w_p_list);
7893 #ifdef FEAT_DIFF
7894 	case PV_DIFF:	return (char_u *)&(curwin->w_p_diff);
7895 #endif
7896 #ifdef FEAT_FOLDING
7897 	case PV_FDC:	return (char_u *)&(curwin->w_p_fdc);
7898 	case PV_FEN:	return (char_u *)&(curwin->w_p_fen);
7899 	case PV_FDI:	return (char_u *)&(curwin->w_p_fdi);
7900 	case PV_FDL:	return (char_u *)&(curwin->w_p_fdl);
7901 	case PV_FDM:	return (char_u *)&(curwin->w_p_fdm);
7902 	case PV_FML:	return (char_u *)&(curwin->w_p_fml);
7903 	case PV_FDN:	return (char_u *)&(curwin->w_p_fdn);
7904 # ifdef FEAT_EVAL
7905 	case PV_FDE:	return (char_u *)&(curwin->w_p_fde);
7906 	case PV_FDT:	return (char_u *)&(curwin->w_p_fdt);
7907 # endif
7908 	case PV_FMR:	return (char_u *)&(curwin->w_p_fmr);
7909 #endif
7910 	case PV_NU:	return (char_u *)&(curwin->w_p_nu);
7911 #ifdef FEAT_LINEBREAK
7912 	case PV_NUW:	return (char_u *)&(curwin->w_p_nuw);
7913 #endif
7914 #if defined(FEAT_WINDOWS)
7915 	case PV_WFH:	return (char_u *)&(curwin->w_p_wfh);
7916 #endif
7917 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
7918 	case PV_PVW:	return (char_u *)&(curwin->w_p_pvw);
7919 #endif
7920 #ifdef FEAT_RIGHTLEFT
7921 	case PV_RL:	return (char_u *)&(curwin->w_p_rl);
7922 	case PV_RLC:	return (char_u *)&(curwin->w_p_rlc);
7923 #endif
7924 	case PV_SCROLL:	return (char_u *)&(curwin->w_p_scr);
7925 	case PV_WRAP:	return (char_u *)&(curwin->w_p_wrap);
7926 #ifdef FEAT_LINEBREAK
7927 	case PV_LBR:	return (char_u *)&(curwin->w_p_lbr);
7928 #endif
7929 #ifdef FEAT_SCROLLBIND
7930 	case PV_SCBIND: return (char_u *)&(curwin->w_p_scb);
7931 #endif
7932 
7933 	case PV_AI:	return (char_u *)&(curbuf->b_p_ai);
7934 	case PV_BIN:	return (char_u *)&(curbuf->b_p_bin);
7935 #ifdef FEAT_MBYTE
7936 	case PV_BOMB:	return (char_u *)&(curbuf->b_p_bomb);
7937 #endif
7938 #if defined(FEAT_QUICKFIX)
7939 	case PV_BH:	return (char_u *)&(curbuf->b_p_bh);
7940 	case PV_BT:	return (char_u *)&(curbuf->b_p_bt);
7941 #endif
7942 	case PV_BL:	return (char_u *)&(curbuf->b_p_bl);
7943 	case PV_CI:	return (char_u *)&(curbuf->b_p_ci);
7944 #ifdef FEAT_CINDENT
7945 	case PV_CIN:	return (char_u *)&(curbuf->b_p_cin);
7946 	case PV_CINK:	return (char_u *)&(curbuf->b_p_cink);
7947 	case PV_CINO:	return (char_u *)&(curbuf->b_p_cino);
7948 #endif
7949 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
7950 	case PV_CINW:	return (char_u *)&(curbuf->b_p_cinw);
7951 #endif
7952 #ifdef FEAT_COMMENTS
7953 	case PV_COM:	return (char_u *)&(curbuf->b_p_com);
7954 #endif
7955 #ifdef FEAT_FOLDING
7956 	case PV_CMS:	return (char_u *)&(curbuf->b_p_cms);
7957 #endif
7958 #ifdef FEAT_INS_EXPAND
7959 	case PV_CPT:	return (char_u *)&(curbuf->b_p_cpt);
7960 #endif
7961 #ifdef FEAT_COMPL_FUNC
7962 	case PV_CFU:	return (char_u *)&(curbuf->b_p_cfu);
7963 #endif
7964 	case PV_EOL:	return (char_u *)&(curbuf->b_p_eol);
7965 	case PV_ET:	return (char_u *)&(curbuf->b_p_et);
7966 #ifdef FEAT_MBYTE
7967 	case PV_FENC:	return (char_u *)&(curbuf->b_p_fenc);
7968 #endif
7969 	case PV_FF:	return (char_u *)&(curbuf->b_p_ff);
7970 #ifdef FEAT_AUTOCMD
7971 	case PV_FT:	return (char_u *)&(curbuf->b_p_ft);
7972 #endif
7973 	case PV_FO:	return (char_u *)&(curbuf->b_p_fo);
7974 	case PV_IMI:	return (char_u *)&(curbuf->b_p_iminsert);
7975 	case PV_IMS:	return (char_u *)&(curbuf->b_p_imsearch);
7976 	case PV_INF:	return (char_u *)&(curbuf->b_p_inf);
7977 	case PV_ISK:	return (char_u *)&(curbuf->b_p_isk);
7978 #ifdef FEAT_FIND_ID
7979 # ifdef FEAT_EVAL
7980 	case PV_INEX:	return (char_u *)&(curbuf->b_p_inex);
7981 # endif
7982 #endif
7983 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
7984 	case PV_INDE:	return (char_u *)&(curbuf->b_p_inde);
7985 	case PV_INDK:	return (char_u *)&(curbuf->b_p_indk);
7986 #endif
7987 #ifdef FEAT_CRYPT
7988 	case PV_KEY:	return (char_u *)&(curbuf->b_p_key);
7989 #endif
7990 #ifdef FEAT_LISP
7991 	case PV_LISP:	return (char_u *)&(curbuf->b_p_lisp);
7992 #endif
7993 	case PV_ML:	return (char_u *)&(curbuf->b_p_ml);
7994 	case PV_MPS:	return (char_u *)&(curbuf->b_p_mps);
7995 	case PV_MA:	return (char_u *)&(curbuf->b_p_ma);
7996 	case PV_MOD:	return (char_u *)&(curbuf->b_changed);
7997 	case PV_NF:	return (char_u *)&(curbuf->b_p_nf);
7998 #ifdef FEAT_OSFILETYPE
7999 	case PV_OFT:	return (char_u *)&(curbuf->b_p_oft);
8000 #endif
8001 	case PV_PI:	return (char_u *)&(curbuf->b_p_pi);
8002 #ifdef FEAT_TEXTOBJ
8003 	case PV_QE:	return (char_u *)&(curbuf->b_p_qe);
8004 #endif
8005 	case PV_RO:	return (char_u *)&(curbuf->b_p_ro);
8006 #ifdef FEAT_SMARTINDENT
8007 	case PV_SI:	return (char_u *)&(curbuf->b_p_si);
8008 #endif
8009 #ifndef SHORT_FNAME
8010 	case PV_SN:	return (char_u *)&(curbuf->b_p_sn);
8011 #endif
8012 	case PV_STS:	return (char_u *)&(curbuf->b_p_sts);
8013 #ifdef FEAT_SEARCHPATH
8014 	case PV_SUA:	return (char_u *)&(curbuf->b_p_sua);
8015 #endif
8016 	case PV_SWF:	return (char_u *)&(curbuf->b_p_swf);
8017 #ifdef FEAT_SYN_HL
8018 	case PV_SYN:	return (char_u *)&(curbuf->b_p_syn);
8019 #endif
8020 	case PV_SW:	return (char_u *)&(curbuf->b_p_sw);
8021 	case PV_TS:	return (char_u *)&(curbuf->b_p_ts);
8022 	case PV_TW:	return (char_u *)&(curbuf->b_p_tw);
8023 	case PV_TX:	return (char_u *)&(curbuf->b_p_tx);
8024 	case PV_WM:	return (char_u *)&(curbuf->b_p_wm);
8025 #ifdef FEAT_KEYMAP
8026 	case PV_KMAP:	return (char_u *)&(curbuf->b_p_keymap);
8027 #endif
8028 	default:	EMSG(_("E356: get_varp ERROR"));
8029     }
8030     /* always return a valid pointer to avoid a crash! */
8031     return (char_u *)&(curbuf->b_p_wm);
8032 }
8033 
8034 /*
8035  * Get the value of 'equalprg', either the buffer-local one or the global one.
8036  */
8037     char_u *
8038 get_equalprg()
8039 {
8040     if (*curbuf->b_p_ep == NUL)
8041 	return p_ep;
8042     return curbuf->b_p_ep;
8043 }
8044 
8045 #if defined(FEAT_WINDOWS) || defined(PROTO)
8046 /*
8047  * Copy options from one window to another.
8048  * Used when splitting a window.
8049  */
8050     void
8051 win_copy_options(wp_from, wp_to)
8052     win_T	*wp_from;
8053     win_T	*wp_to;
8054 {
8055     copy_winopt(&wp_from->w_onebuf_opt, &wp_to->w_onebuf_opt);
8056     copy_winopt(&wp_from->w_allbuf_opt, &wp_to->w_allbuf_opt);
8057 # ifdef FEAT_RIGHTLEFT
8058 #  ifdef FEAT_FKMAP
8059     /* Is this right? */
8060     wp_to->w_farsi = wp_from->w_farsi;
8061 #  endif
8062 # endif
8063 }
8064 #endif
8065 
8066 /*
8067  * Copy the options from one winopt_T to another.
8068  * Doesn't free the old option values in "to", use clear_winopt() for that.
8069  * The 'scroll' option is not copied, because it depends on the window height.
8070  * The 'previewwindow' option is reset, there can be only one preview window.
8071  */
8072     void
8073 copy_winopt(from, to)
8074     winopt_T	*from;
8075     winopt_T	*to;
8076 {
8077 #ifdef FEAT_ARABIC
8078     to->wo_arab = from->wo_arab;
8079 #endif
8080     to->wo_list = from->wo_list;
8081     to->wo_nu = from->wo_nu;
8082 #ifdef FEAT_LINEBREAK
8083     to->wo_nuw = from->wo_nuw;
8084 #endif
8085 #ifdef FEAT_RIGHTLEFT
8086     to->wo_rl  = from->wo_rl;
8087     to->wo_rlc = vim_strsave(from->wo_rlc);
8088 #endif
8089     to->wo_wrap = from->wo_wrap;
8090 #ifdef FEAT_LINEBREAK
8091     to->wo_lbr = from->wo_lbr;
8092 #endif
8093 #ifdef FEAT_SCROLLBIND
8094     to->wo_scb = from->wo_scb;
8095 #endif
8096 #ifdef FEAT_DIFF
8097     to->wo_diff = from->wo_diff;
8098 #endif
8099 #ifdef FEAT_FOLDING
8100     to->wo_fdc = from->wo_fdc;
8101     to->wo_fen = from->wo_fen;
8102     to->wo_fdi = vim_strsave(from->wo_fdi);
8103     to->wo_fml = from->wo_fml;
8104     to->wo_fdl = from->wo_fdl;
8105     to->wo_fdm = vim_strsave(from->wo_fdm);
8106     to->wo_fdn = from->wo_fdn;
8107 # ifdef FEAT_EVAL
8108     to->wo_fde = vim_strsave(from->wo_fde);
8109     to->wo_fdt = vim_strsave(from->wo_fdt);
8110 # endif
8111     to->wo_fmr = vim_strsave(from->wo_fmr);
8112 #endif
8113     check_winopt(to);		/* don't want NULL pointers */
8114 }
8115 
8116 /*
8117  * Check string options in a window for a NULL value.
8118  */
8119     void
8120 check_win_options(win)
8121     win_T	*win;
8122 {
8123     check_winopt(&win->w_onebuf_opt);
8124     check_winopt(&win->w_allbuf_opt);
8125 }
8126 
8127 /*
8128  * Check for NULL pointers in a winopt_T and replace them with empty_option.
8129  */
8130 /*ARGSUSED*/
8131     void
8132 check_winopt(wop)
8133     winopt_T	*wop;
8134 {
8135 #ifdef FEAT_FOLDING
8136     check_string_option(&wop->wo_fdi);
8137     check_string_option(&wop->wo_fdm);
8138 # ifdef FEAT_EVAL
8139     check_string_option(&wop->wo_fde);
8140     check_string_option(&wop->wo_fdt);
8141 # endif
8142     check_string_option(&wop->wo_fmr);
8143 #endif
8144 #ifdef FEAT_RIGHTLEFT
8145     check_string_option(&wop->wo_rlc);
8146 #endif
8147 }
8148 
8149 /*
8150  * Free the allocated memory inside a winopt_T.
8151  */
8152 /*ARGSUSED*/
8153     void
8154 clear_winopt(wop)
8155     winopt_T	*wop;
8156 {
8157 #ifdef FEAT_FOLDING
8158     clear_string_option(&wop->wo_fdi);
8159     clear_string_option(&wop->wo_fdm);
8160 # ifdef FEAT_EVAL
8161     clear_string_option(&wop->wo_fde);
8162     clear_string_option(&wop->wo_fdt);
8163 # endif
8164     clear_string_option(&wop->wo_fmr);
8165 #endif
8166 #ifdef FEAT_RIGHTLEFT
8167     clear_string_option(&wop->wo_rlc);
8168 #endif
8169 }
8170 
8171 /*
8172  * Copy global option values to local options for one buffer.
8173  * Used when creating a new buffer and sometimes when entering a buffer.
8174  * flags:
8175  * BCO_ENTER	We will enter the buf buffer.
8176  * BCO_ALWAYS	Always copy the options, but only set b_p_initialized when
8177  *		appropriate.
8178  * BCO_NOHELP	Don't copy the values to a help buffer.
8179  */
8180     void
8181 buf_copy_options(buf, flags)
8182     buf_T	*buf;
8183     int		flags;
8184 {
8185     int		should_copy = TRUE;
8186     char_u	*save_p_isk = NULL;	    /* init for GCC */
8187     int		dont_do_help;
8188     int		did_isk = FALSE;
8189 
8190     /*
8191      * Don't do anything of the buffer is invalid.
8192      */
8193     if (buf == NULL || !buf_valid(buf))
8194 	return;
8195 
8196     /*
8197      * Skip this when the option defaults have not been set yet.  Happens when
8198      * main() allocates the first buffer.
8199      */
8200     if (p_cpo != NULL)
8201     {
8202 	/*
8203 	 * Always copy when entering and 'cpo' contains 'S'.
8204 	 * Don't copy when already initialized.
8205 	 * Don't copy when 'cpo' contains 's' and not entering.
8206 	 * 'S'	BCO_ENTER  initialized	's'  should_copy
8207 	 * yes	  yes	       X	 X	TRUE
8208 	 * yes	  no	      yes	 X	FALSE
8209 	 * no	   X	      yes	 X	FALSE
8210 	 *  X	  no	      no	yes	FALSE
8211 	 *  X	  no	      no	no	TRUE
8212 	 * no	  yes	      no	 X	TRUE
8213 	 */
8214 	if ((vim_strchr(p_cpo, CPO_BUFOPTGLOB) == NULL || !(flags & BCO_ENTER))
8215 		&& (buf->b_p_initialized
8216 		    || (!(flags & BCO_ENTER)
8217 			&& vim_strchr(p_cpo, CPO_BUFOPT) != NULL)))
8218 	    should_copy = FALSE;
8219 
8220 	if (should_copy || (flags & BCO_ALWAYS))
8221 	{
8222 	    /* Don't copy the options specific to a help buffer when
8223 	     * BCO_NOHELP is given or the options were initialized already
8224 	     * (jumping back to a help file with CTRL-T or CTRL-O) */
8225 	    dont_do_help = ((flags & BCO_NOHELP) && buf->b_help)
8226 						       || buf->b_p_initialized;
8227 	    if (dont_do_help)		/* don't free b_p_isk */
8228 	    {
8229 		save_p_isk = buf->b_p_isk;
8230 		buf->b_p_isk = NULL;
8231 	    }
8232 	    /*
8233 	     * Always free the allocated strings.
8234 	     * If not already initialized, set 'readonly' and copy 'fileformat'.
8235 	     */
8236 	    if (!buf->b_p_initialized)
8237 	    {
8238 		free_buf_options(buf, TRUE);
8239 		buf->b_p_ro = FALSE;		/* don't copy readonly */
8240 		buf->b_p_tx = p_tx;
8241 #ifdef FEAT_MBYTE
8242 		buf->b_p_fenc = vim_strsave(p_fenc);
8243 #endif
8244 		buf->b_p_ff = vim_strsave(p_ff);
8245 #if defined(FEAT_QUICKFIX)
8246 		buf->b_p_bh = empty_option;
8247 		buf->b_p_bt = empty_option;
8248 #endif
8249 	    }
8250 	    else
8251 		free_buf_options(buf, FALSE);
8252 
8253 	    buf->b_p_ai = p_ai;
8254 	    buf->b_p_ai_nopaste = p_ai_nopaste;
8255 	    buf->b_p_sw = p_sw;
8256 	    buf->b_p_tw = p_tw;
8257 	    buf->b_p_tw_nopaste = p_tw_nopaste;
8258 	    buf->b_p_tw_nobin = p_tw_nobin;
8259 	    buf->b_p_wm = p_wm;
8260 	    buf->b_p_wm_nopaste = p_wm_nopaste;
8261 	    buf->b_p_wm_nobin = p_wm_nobin;
8262 	    buf->b_p_bin = p_bin;
8263 	    buf->b_p_et = p_et;
8264 	    buf->b_p_et_nobin = p_et_nobin;
8265 	    buf->b_p_ml = p_ml;
8266 	    buf->b_p_ml_nobin = p_ml_nobin;
8267 	    buf->b_p_inf = p_inf;
8268 	    buf->b_p_swf = p_swf;
8269 #ifdef FEAT_INS_EXPAND
8270 	    buf->b_p_cpt = vim_strsave(p_cpt);
8271 #endif
8272 #ifdef FEAT_COMPL_FUNC
8273 	    buf->b_p_cfu = vim_strsave(p_cfu);
8274 #endif
8275 	    buf->b_p_sts = p_sts;
8276 	    buf->b_p_sts_nopaste = p_sts_nopaste;
8277 #ifndef SHORT_FNAME
8278 	    buf->b_p_sn = p_sn;
8279 #endif
8280 #ifdef FEAT_COMMENTS
8281 	    buf->b_p_com = vim_strsave(p_com);
8282 #endif
8283 #ifdef FEAT_FOLDING
8284 	    buf->b_p_cms = vim_strsave(p_cms);
8285 #endif
8286 	    buf->b_p_fo = vim_strsave(p_fo);
8287 	    buf->b_p_nf = vim_strsave(p_nf);
8288 	    buf->b_p_mps = vim_strsave(p_mps);
8289 #ifdef FEAT_SMARTINDENT
8290 	    buf->b_p_si = p_si;
8291 #endif
8292 	    buf->b_p_ci = p_ci;
8293 #ifdef FEAT_CINDENT
8294 	    buf->b_p_cin = p_cin;
8295 	    buf->b_p_cink = vim_strsave(p_cink);
8296 	    buf->b_p_cino = vim_strsave(p_cino);
8297 #endif
8298 #ifdef FEAT_AUTOCMD
8299 	    /* Don't copy 'filetype', it must be detected */
8300 	    buf->b_p_ft = empty_option;
8301 #endif
8302 #ifdef FEAT_OSFILETYPE
8303 	    buf->b_p_oft = vim_strsave(p_oft);
8304 #endif
8305 	    buf->b_p_pi = p_pi;
8306 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
8307 	    buf->b_p_cinw = vim_strsave(p_cinw);
8308 #endif
8309 #ifdef FEAT_LISP
8310 	    buf->b_p_lisp = p_lisp;
8311 #endif
8312 #ifdef FEAT_SYN_HL
8313 	    /* Don't copy 'syntax', it must be set */
8314 	    buf->b_p_syn = empty_option;
8315 #endif
8316 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
8317 	    buf->b_p_inde = vim_strsave(p_inde);
8318 	    buf->b_p_indk = vim_strsave(p_indk);
8319 #endif
8320 #ifdef FEAT_CRYPT
8321 	    buf->b_p_key = vim_strsave(p_key);
8322 #endif
8323 #ifdef FEAT_SEARCHPATH
8324 	    buf->b_p_sua = vim_strsave(p_sua);
8325 #endif
8326 #ifdef FEAT_KEYMAP
8327 	    buf->b_p_keymap = vim_strsave(p_keymap);
8328 	    buf->b_kmap_state |= KEYMAP_INIT;
8329 #endif
8330 	    /* This isn't really an option, but copying the langmap and IME
8331 	     * state from the current buffer is better than resetting it. */
8332 	    buf->b_p_iminsert = p_iminsert;
8333 	    buf->b_p_imsearch = p_imsearch;
8334 
8335 	    /* options that are normally global but also have a local value
8336 	     * are not copied, start using the global value */
8337 	    buf->b_p_ar = -1;
8338 #ifdef FEAT_QUICKFIX
8339 	    buf->b_p_gp = empty_option;
8340 	    buf->b_p_mp = empty_option;
8341 	    buf->b_p_efm = empty_option;
8342 #endif
8343 	    buf->b_p_ep = empty_option;
8344 	    buf->b_p_kp = empty_option;
8345 	    buf->b_p_path = empty_option;
8346 	    buf->b_p_tags = empty_option;
8347 #ifdef FEAT_FIND_ID
8348 	    buf->b_p_def = empty_option;
8349 	    buf->b_p_inc = empty_option;
8350 # ifdef FEAT_EVAL
8351 	    buf->b_p_inex = vim_strsave(p_inex);
8352 # endif
8353 #endif
8354 #ifdef FEAT_INS_EXPAND
8355 	    buf->b_p_dict = empty_option;
8356 	    buf->b_p_tsr = empty_option;
8357 #endif
8358 #ifdef FEAT_TEXTOBJ
8359 	    buf->b_p_qe = vim_strsave(p_qe);
8360 #endif
8361 
8362 	    /*
8363 	     * Don't copy the options set by ex_help(), use the saved values,
8364 	     * when going from a help buffer to a non-help buffer.
8365 	     * Don't touch these at all when BCO_NOHELP is used and going from
8366 	     * or to a help buffer.
8367 	     */
8368 	    if (dont_do_help)
8369 		buf->b_p_isk = save_p_isk;
8370 	    else
8371 	    {
8372 		buf->b_p_isk = vim_strsave(p_isk);
8373 		did_isk = TRUE;
8374 		buf->b_p_ts = p_ts;
8375 		buf->b_help = FALSE;
8376 #ifdef FEAT_QUICKFIX
8377 		if (buf->b_p_bt[0] == 'h')
8378 		    clear_string_option(&buf->b_p_bt);
8379 #endif
8380 		buf->b_p_ma = p_ma;
8381 	    }
8382 	}
8383 
8384 	/*
8385 	 * When the options should be copied (ignoring BCO_ALWAYS), set the
8386 	 * flag that indicates that the options have been initialized.
8387 	 */
8388 	if (should_copy)
8389 	    buf->b_p_initialized = TRUE;
8390     }
8391 
8392     check_buf_options(buf);	    /* make sure we don't have NULLs */
8393     if (did_isk)
8394 	(void)buf_init_chartab(buf, FALSE);
8395 }
8396 
8397 /*
8398  * Reset the 'modifiable' option and its default value.
8399  */
8400     void
8401 reset_modifiable()
8402 {
8403     int		opt_idx;
8404 
8405     curbuf->b_p_ma = FALSE;
8406     p_ma = FALSE;
8407     opt_idx = findoption((char_u *)"ma");
8408     options[opt_idx].def_val[VI_DEFAULT] = FALSE;
8409 }
8410 
8411 /*
8412  * Set the global value for 'iminsert' to the local value.
8413  */
8414     void
8415 set_iminsert_global()
8416 {
8417     p_iminsert = curbuf->b_p_iminsert;
8418 }
8419 
8420 /*
8421  * Set the global value for 'imsearch' to the local value.
8422  */
8423     void
8424 set_imsearch_global()
8425 {
8426     p_imsearch = curbuf->b_p_imsearch;
8427 }
8428 
8429 #if defined(FEAT_CMDL_COMPL) || defined(PROTO)
8430 static int expand_option_idx = -1;
8431 static char_u expand_option_name[5] = {'t', '_', NUL, NUL, NUL};
8432 static int expand_option_flags = 0;
8433 
8434     void
8435 set_context_in_set_cmd(xp, arg, opt_flags)
8436     expand_T	*xp;
8437     char_u	*arg;
8438     int		opt_flags;	/* OPT_GLOBAL and/or OPT_LOCAL */
8439 {
8440     int		nextchar;
8441     long_u	flags = 0;	/* init for GCC */
8442     int		opt_idx = 0;	/* init for GCC */
8443     char_u	*p;
8444     char_u	*s;
8445     int		is_term_option = FALSE;
8446     int		key;
8447 
8448     expand_option_flags = opt_flags;
8449 
8450     xp->xp_context = EXPAND_SETTINGS;
8451     if (*arg == NUL)
8452     {
8453 	xp->xp_pattern = arg;
8454 	return;
8455     }
8456     p = arg + STRLEN(arg) - 1;
8457     if (*p == ' ' && *(p - 1) != '\\')
8458     {
8459 	xp->xp_pattern = p + 1;
8460 	return;
8461     }
8462     while (p > arg)
8463     {
8464 	s = p;
8465 	/* count number of backslashes before ' ' or ',' */
8466 	if (*p == ' ' || *p == ',')
8467 	{
8468 	    while (s > arg && *(s - 1) == '\\')
8469 		--s;
8470 	}
8471 	/* break at a space with an even number of backslashes */
8472 	if (*p == ' ' && ((p - s) & 1) == 0)
8473 	{
8474 	    ++p;
8475 	    break;
8476 	}
8477 	--p;
8478     }
8479     if (STRNCMP(p, "no", 2) == 0)
8480     {
8481 	xp->xp_context = EXPAND_BOOL_SETTINGS;
8482 	p += 2;
8483     }
8484     if (STRNCMP(p, "inv", 3) == 0)
8485     {
8486 	xp->xp_context = EXPAND_BOOL_SETTINGS;
8487 	p += 3;
8488     }
8489     xp->xp_pattern = arg = p;
8490     if (*arg == '<')
8491     {
8492 	while (*p != '>')
8493 	    if (*p++ == NUL)	    /* expand terminal option name */
8494 		return;
8495 	key = get_special_key_code(arg + 1);
8496 	if (key == 0)		    /* unknown name */
8497 	{
8498 	    xp->xp_context = EXPAND_NOTHING;
8499 	    return;
8500 	}
8501 	nextchar = *++p;
8502 	is_term_option = TRUE;
8503 	expand_option_name[2] = KEY2TERMCAP0(key);
8504 	expand_option_name[3] = KEY2TERMCAP1(key);
8505     }
8506     else
8507     {
8508 	if (p[0] == 't' && p[1] == '_')
8509 	{
8510 	    p += 2;
8511 	    if (*p != NUL)
8512 		++p;
8513 	    if (*p == NUL)
8514 		return;		/* expand option name */
8515 	    nextchar = *++p;
8516 	    is_term_option = TRUE;
8517 	    expand_option_name[2] = p[-2];
8518 	    expand_option_name[3] = p[-1];
8519 	}
8520 	else
8521 	{
8522 		/* Allow * wildcard */
8523 	    while (ASCII_ISALNUM(*p) || *p == '_' || *p == '*')
8524 		p++;
8525 	    if (*p == NUL)
8526 		return;
8527 	    nextchar = *p;
8528 	    *p = NUL;
8529 	    opt_idx = findoption(arg);
8530 	    *p = nextchar;
8531 	    if (opt_idx == -1 || options[opt_idx].var == NULL)
8532 	    {
8533 		xp->xp_context = EXPAND_NOTHING;
8534 		return;
8535 	    }
8536 	    flags = options[opt_idx].flags;
8537 	    if (flags & P_BOOL)
8538 	    {
8539 		xp->xp_context = EXPAND_NOTHING;
8540 		return;
8541 	    }
8542 	}
8543     }
8544     /* handle "-=" and "+=" */
8545     if ((nextchar == '-' || nextchar == '+' || nextchar == '^') && p[1] == '=')
8546     {
8547 	++p;
8548 	nextchar = '=';
8549     }
8550     if ((nextchar != '=' && nextchar != ':')
8551 				    || xp->xp_context == EXPAND_BOOL_SETTINGS)
8552     {
8553 	xp->xp_context = EXPAND_UNSUCCESSFUL;
8554 	return;
8555     }
8556     if (xp->xp_context != EXPAND_BOOL_SETTINGS && p[1] == NUL)
8557     {
8558 	xp->xp_context = EXPAND_OLD_SETTING;
8559 	if (is_term_option)
8560 	    expand_option_idx = -1;
8561 	else
8562 	    expand_option_idx = opt_idx;
8563 	xp->xp_pattern = p + 1;
8564 	return;
8565     }
8566     xp->xp_context = EXPAND_NOTHING;
8567     if (is_term_option || (flags & P_NUM))
8568 	return;
8569 
8570     xp->xp_pattern = p + 1;
8571 
8572     if (flags & P_EXPAND)
8573     {
8574 	p = options[opt_idx].var;
8575 	if (p == (char_u *)&p_bdir
8576 		|| p == (char_u *)&p_dir
8577 		|| p == (char_u *)&p_path
8578 		|| p == (char_u *)&p_rtp
8579 #ifdef FEAT_SEARCHPATH
8580 		|| p == (char_u *)&p_cdpath
8581 #endif
8582 #ifdef FEAT_SESSION
8583 		|| p == (char_u *)&p_vdir
8584 #endif
8585 		)
8586 	{
8587 	    xp->xp_context = EXPAND_DIRECTORIES;
8588 	    if (p == (char_u *)&p_path
8589 #ifdef FEAT_SEARCHPATH
8590 		    || p == (char_u *)&p_cdpath
8591 #endif
8592 		   )
8593 		xp->xp_backslash = XP_BS_THREE;
8594 	    else
8595 		xp->xp_backslash = XP_BS_ONE;
8596 	}
8597 	else
8598 	{
8599 	    xp->xp_context = EXPAND_FILES;
8600 	    /* for 'tags' need three backslashes for a space */
8601 	    if (p == (char_u *)&p_tags)
8602 		xp->xp_backslash = XP_BS_THREE;
8603 	    else
8604 		xp->xp_backslash = XP_BS_ONE;
8605 	}
8606     }
8607 
8608     /* For an option that is a list of file names, find the start of the
8609      * last file name. */
8610     for (p = arg + STRLEN(arg) - 1; p > xp->xp_pattern; --p)
8611     {
8612 	/* count number of backslashes before ' ' or ',' */
8613 	if (*p == ' ' || *p == ',')
8614 	{
8615 	    s = p;
8616 	    while (s > xp->xp_pattern && *(s - 1) == '\\')
8617 		--s;
8618 	    if ((*p == ' ' && (xp->xp_backslash == XP_BS_THREE && (p - s) < 3))
8619 		    || (*p == ',' && (flags & P_COMMA) && ((p - s) & 1) == 0))
8620 	    {
8621 		xp->xp_pattern = p + 1;
8622 		break;
8623 	    }
8624 	}
8625     }
8626 
8627     return;
8628 }
8629 
8630     int
8631 ExpandSettings(xp, regmatch, num_file, file)
8632     expand_T	*xp;
8633     regmatch_T	*regmatch;
8634     int		*num_file;
8635     char_u	***file;
8636 {
8637     int		num_normal = 0;	    /* Nr of matching non-term-code settings */
8638     int		num_term = 0;	    /* Nr of matching terminal code settings */
8639     int		opt_idx;
8640     int		match;
8641     int		count = 0;
8642     char_u	*str;
8643     int		loop;
8644     int		is_term_opt;
8645     char_u	name_buf[MAX_KEY_NAME_LEN];
8646     static char *(names[]) = {"all", "termcap"};
8647     int		ic = regmatch->rm_ic;	/* remember the ignore-case flag */
8648 
8649     /* do this loop twice:
8650      * loop == 0: count the number of matching options
8651      * loop == 1: copy the matching options into allocated memory
8652      */
8653     for (loop = 0; loop <= 1; ++loop)
8654     {
8655 	regmatch->rm_ic = ic;
8656 	if (xp->xp_context != EXPAND_BOOL_SETTINGS)
8657 	{
8658 	    for (match = 0; match < sizeof(names) / sizeof(char *); ++match)
8659 		if (vim_regexec(regmatch, (char_u *)names[match], (colnr_T)0))
8660 		{
8661 		    if (loop == 0)
8662 			num_normal++;
8663 		    else
8664 			(*file)[count++] = vim_strsave((char_u *)names[match]);
8665 		}
8666 	}
8667 	for (opt_idx = 0; (str = (char_u *)options[opt_idx].fullname) != NULL;
8668 								    opt_idx++)
8669 	{
8670 	    if (options[opt_idx].var == NULL)
8671 		continue;
8672 	    if (xp->xp_context == EXPAND_BOOL_SETTINGS
8673 	      && !(options[opt_idx].flags & P_BOOL))
8674 		continue;
8675 	    is_term_opt = istermoption(&options[opt_idx]);
8676 	    if (is_term_opt && num_normal > 0)
8677 		continue;
8678 	    match = FALSE;
8679 	    if (vim_regexec(regmatch, str, (colnr_T)0)
8680 		    || (options[opt_idx].shortname != NULL
8681 			&& vim_regexec(regmatch,
8682 			   (char_u *)options[opt_idx].shortname, (colnr_T)0)))
8683 		match = TRUE;
8684 	    else if (is_term_opt)
8685 	    {
8686 		name_buf[0] = '<';
8687 		name_buf[1] = 't';
8688 		name_buf[2] = '_';
8689 		name_buf[3] = str[2];
8690 		name_buf[4] = str[3];
8691 		name_buf[5] = '>';
8692 		name_buf[6] = NUL;
8693 		if (vim_regexec(regmatch, name_buf, (colnr_T)0))
8694 		{
8695 		    match = TRUE;
8696 		    str = name_buf;
8697 		}
8698 	    }
8699 	    if (match)
8700 	    {
8701 		if (loop == 0)
8702 		{
8703 		    if (is_term_opt)
8704 			num_term++;
8705 		    else
8706 			num_normal++;
8707 		}
8708 		else
8709 		    (*file)[count++] = vim_strsave(str);
8710 	    }
8711 	}
8712 	/*
8713 	 * Check terminal key codes, these are not in the option table
8714 	 */
8715 	if (xp->xp_context != EXPAND_BOOL_SETTINGS  && num_normal == 0)
8716 	{
8717 	    for (opt_idx = 0; (str = get_termcode(opt_idx)) != NULL; opt_idx++)
8718 	    {
8719 		if (!isprint(str[0]) || !isprint(str[1]))
8720 		    continue;
8721 
8722 		name_buf[0] = 't';
8723 		name_buf[1] = '_';
8724 		name_buf[2] = str[0];
8725 		name_buf[3] = str[1];
8726 		name_buf[4] = NUL;
8727 
8728 		match = FALSE;
8729 		if (vim_regexec(regmatch, name_buf, (colnr_T)0))
8730 		    match = TRUE;
8731 		else
8732 		{
8733 		    name_buf[0] = '<';
8734 		    name_buf[1] = 't';
8735 		    name_buf[2] = '_';
8736 		    name_buf[3] = str[0];
8737 		    name_buf[4] = str[1];
8738 		    name_buf[5] = '>';
8739 		    name_buf[6] = NUL;
8740 
8741 		    if (vim_regexec(regmatch, name_buf, (colnr_T)0))
8742 			match = TRUE;
8743 		}
8744 		if (match)
8745 		{
8746 		    if (loop == 0)
8747 			num_term++;
8748 		    else
8749 			(*file)[count++] = vim_strsave(name_buf);
8750 		}
8751 	    }
8752 
8753 	    /*
8754 	     * Check special key names.
8755 	     */
8756 	    regmatch->rm_ic = TRUE;		/* ignore case here */
8757 	    for (opt_idx = 0; (str = get_key_name(opt_idx)) != NULL; opt_idx++)
8758 	    {
8759 		name_buf[0] = '<';
8760 		STRCPY(name_buf + 1, str);
8761 		STRCAT(name_buf, ">");
8762 
8763 		if (vim_regexec(regmatch, name_buf, (colnr_T)0))
8764 		{
8765 		    if (loop == 0)
8766 			num_term++;
8767 		    else
8768 			(*file)[count++] = vim_strsave(name_buf);
8769 		}
8770 	    }
8771 	}
8772 	if (loop == 0)
8773 	{
8774 	    if (num_normal > 0)
8775 		*num_file = num_normal;
8776 	    else if (num_term > 0)
8777 		*num_file = num_term;
8778 	    else
8779 		return OK;
8780 	    *file = (char_u **)alloc((unsigned)(*num_file * sizeof(char_u *)));
8781 	    if (*file == NULL)
8782 	    {
8783 		*file = (char_u **)"";
8784 		return FAIL;
8785 	    }
8786 	}
8787     }
8788     return OK;
8789 }
8790 
8791     int
8792 ExpandOldSetting(num_file, file)
8793     int	    *num_file;
8794     char_u  ***file;
8795 {
8796     char_u  *var = NULL;	/* init for GCC */
8797     char_u  *buf;
8798 
8799     *num_file = 0;
8800     *file = (char_u **)alloc((unsigned)sizeof(char_u *));
8801     if (*file == NULL)
8802 	return FAIL;
8803 
8804     /*
8805      * For a terminal key code expand_option_idx is < 0.
8806      */
8807     if (expand_option_idx < 0)
8808     {
8809 	var = find_termcode(expand_option_name + 2);
8810 	if (var == NULL)
8811 	    expand_option_idx = findoption(expand_option_name);
8812     }
8813 
8814     if (expand_option_idx >= 0)
8815     {
8816 	/* put string of option value in NameBuff */
8817 	option_value2string(&options[expand_option_idx], expand_option_flags);
8818 	var = NameBuff;
8819     }
8820     else if (var == NULL)
8821 	var = (char_u *)"";
8822 
8823     /* A backslash is required before some characters.  This is the reverse of
8824      * what happens in do_set(). */
8825     buf = vim_strsave_escaped(var, escape_chars);
8826 
8827     if (buf == NULL)
8828     {
8829 	vim_free(*file);
8830 	*file = NULL;
8831 	return FAIL;
8832     }
8833 
8834 #ifdef BACKSLASH_IN_FILENAME
8835     /* For MS-Windows et al. we don't double backslashes at the start and
8836      * before a file name character. */
8837     for (var = buf; *var != NUL; )
8838     {
8839 	if (var[0] == '\\' && var[1] == '\\'
8840 		&& expand_option_idx >= 0
8841 		&& (options[expand_option_idx].flags & P_EXPAND)
8842 		&& vim_isfilec(var[2])
8843 		&& (var[2] != '\\' || (var == buf && var[4] != '\\')))
8844 	    mch_memmove(var, var + 1, STRLEN(var));
8845 #ifdef FEAT_MBYTE
8846 	else if (has_mbyte)
8847 	    var += (*mb_ptr2len_check)(var) - 1;
8848 #endif
8849 	++var;
8850     }
8851 #endif
8852 
8853     *file[0] = buf;
8854     *num_file = 1;
8855     return OK;
8856 }
8857 #endif
8858 
8859 /*
8860  * Get the value for the numeric or string option *opp in a nice format into
8861  * NameBuff[].  Must not be called with a hidden option!
8862  */
8863     static void
8864 option_value2string(opp, opt_flags)
8865     struct vimoption	*opp;
8866     int			opt_flags;	/* OPT_GLOBAL and/or OPT_LOCAL */
8867 {
8868     char_u	*varp;
8869 
8870     varp = get_varp_scope(opp, opt_flags);
8871 
8872     if (opp->flags & P_NUM)
8873     {
8874 	long wc = 0;
8875 
8876 	if (wc_use_keyname(varp, &wc))
8877 	    STRCPY(NameBuff, get_special_key_name((int)wc, 0));
8878 	else if (wc != 0)
8879 	    STRCPY(NameBuff, transchar((int)wc));
8880 	else
8881 	    sprintf((char *)NameBuff, "%ld", *(long *)varp);
8882     }
8883     else    /* P_STRING */
8884     {
8885 	varp = *(char_u **)(varp);
8886 	if (varp == NULL)		    /* just in case */
8887 	    NameBuff[0] = NUL;
8888 #ifdef FEAT_CRYPT
8889 	/* don't show the actual value of 'key', only that it's set */
8890 	if (opp->var == (char_u *)&p_key && *varp)
8891 	    STRCPY(NameBuff, "*****");
8892 #endif
8893 	else if (opp->flags & P_EXPAND)
8894 	    home_replace(NULL, varp, NameBuff, MAXPATHL, FALSE);
8895 	/* Translate 'pastetoggle' into special key names */
8896 	else if ((char_u **)opp->var == &p_pt)
8897 	    str2specialbuf(p_pt, NameBuff, MAXPATHL);
8898 	else
8899 	    STRNCPY(NameBuff, varp, MAXPATHL);
8900     }
8901 }
8902 
8903 /*
8904  * Return TRUE if "varp" points to 'wildchar' or 'wildcharm' and it can be
8905  * printed as a keyname.
8906  * "*wcp" is set to the value of the option if it's 'wildchar' or 'wildcharm'.
8907  */
8908     static int
8909 wc_use_keyname(varp, wcp)
8910     char_u	*varp;
8911     long	*wcp;
8912 {
8913     if (((long *)varp == &p_wc) || ((long *)varp == &p_wcm))
8914     {
8915 	*wcp = *(long *)varp;
8916 	if (IS_SPECIAL(*wcp) || find_special_key_in_table((int)*wcp) >= 0)
8917 	    return TRUE;
8918     }
8919     return FALSE;
8920 }
8921 
8922 #ifdef FEAT_LANGMAP
8923 /*
8924  * Any character has an equivalent character.  This is used for keyboards that
8925  * have a special language mode that sends characters above 128 (although
8926  * other characters can be translated too).
8927  */
8928 
8929 /*
8930  * char_u langmap_mapchar[256];
8931  * Normally maps each of the 128 upper chars to an <128 ascii char; used to
8932  * "translate" native lang chars in normal mode or some cases of
8933  * insert mode without having to tediously switch lang mode back&forth.
8934  */
8935 
8936     static void
8937 langmap_init()
8938 {
8939     int i;
8940 
8941     for (i = 0; i < 256; i++)		/* we init with a-one-to one map */
8942 	langmap_mapchar[i] = i;
8943 }
8944 
8945 /*
8946  * Called when langmap option is set; the language map can be
8947  * changed at any time!
8948  */
8949     static void
8950 langmap_set()
8951 {
8952     char_u  *p;
8953     char_u  *p2;
8954     int	    from, to;
8955 
8956     langmap_init();			    /* back to one-to-one map first */
8957 
8958     for (p = p_langmap; p[0] != NUL; )
8959     {
8960 	for (p2 = p; p2[0] != NUL && p2[0] != ',' && p2[0] != ';'; ++p2)
8961 	{
8962 	    if (p2[0] == '\\' && p2[1] != NUL)
8963 		++p2;
8964 #ifdef FEAT_MBYTE
8965 	    p2 += (*mb_ptr2len_check)(p2) - 1;
8966 #endif
8967 	}
8968 	if (p2[0] == ';')
8969 	    ++p2;	    /* abcd;ABCD form, p2 points to A */
8970 	else
8971 	    p2 = NULL;	    /* aAbBcCdD form, p2 is NULL */
8972 	while (p[0])
8973 	{
8974 	    if (p[0] == '\\' && p[1] != NUL)
8975 		++p;
8976 #ifdef FEAT_MBYTE
8977 	    from = (*mb_ptr2char)(p);
8978 #else
8979 	    from = p[0];
8980 #endif
8981 	    if (p2 == NULL)
8982 	    {
8983 #ifdef FEAT_MBYTE
8984 		p += (*mb_ptr2len_check)(p);
8985 #else
8986 		++p;
8987 #endif
8988 		if (p[0] == '\\')
8989 		    ++p;
8990 #ifdef FEAT_MBYTE
8991 		to = (*mb_ptr2char)(p);
8992 #else
8993 		to = p[0];
8994 #endif
8995 	    }
8996 	    else
8997 	    {
8998 		if (p2[0] == '\\')
8999 		    ++p2;
9000 #ifdef FEAT_MBYTE
9001 		to = (*mb_ptr2char)(p2);
9002 #else
9003 		to = p2[0];
9004 #endif
9005 	    }
9006 	    if (to == NUL)
9007 	    {
9008 		EMSG2(_("E357: 'langmap': Matching character missing for %s"),
9009 							     transchar(from));
9010 		return;
9011 	    }
9012 	    langmap_mapchar[from & 255] = to;
9013 
9014 	    /* Advance to next pair */
9015 #ifdef FEAT_MBYTE
9016 	    p += (*mb_ptr2len_check)(p);
9017 #else
9018 	    ++p;
9019 #endif
9020 	    if (p2 == NULL)
9021 	    {
9022 		if (p[0] == ',')
9023 		{
9024 		    ++p;
9025 		    break;
9026 		}
9027 	    }
9028 	    else
9029 	    {
9030 #ifdef FEAT_MBYTE
9031 		p2 += (*mb_ptr2len_check)(p2);
9032 #else
9033 		++p2;
9034 #endif
9035 		if (*p == ';')
9036 		{
9037 		    p = p2;
9038 		    if (p[0] != NUL)
9039 		    {
9040 			if (p[0] != ',')
9041 			{
9042 			    EMSG2(_("E358: 'langmap': Extra characters after semicolon: %s"), p);
9043 			    return;
9044 			}
9045 			++p;
9046 		    }
9047 		    break;
9048 		}
9049 	    }
9050 	}
9051     }
9052 }
9053 #endif
9054 
9055 /*
9056  * Return TRUE if format option 'x' is in effect.
9057  * Take care of no formatting when 'paste' is set.
9058  */
9059     int
9060 has_format_option(x)
9061     int		x;
9062 {
9063     if (p_paste)
9064 	return FALSE;
9065     return (vim_strchr(curbuf->b_p_fo, x) != NULL);
9066 }
9067 
9068 /*
9069  * Return TRUE if "x" is present in 'shortmess' option, or
9070  * 'shortmess' contains 'a' and "x" is present in SHM_A.
9071  */
9072     int
9073 shortmess(x)
9074     int	    x;
9075 {
9076     return (   vim_strchr(p_shm, x) != NULL
9077 	    || (vim_strchr(p_shm, 'a') != NULL
9078 		&& vim_strchr((char_u *)SHM_A, x) != NULL));
9079 }
9080 
9081 /*
9082  * paste_option_changed() - Called after p_paste was set or reset.
9083  */
9084     static void
9085 paste_option_changed()
9086 {
9087     static int	old_p_paste = FALSE;
9088     static int	save_sm = 0;
9089 #ifdef FEAT_CMDL_INFO
9090     static int	save_ru = 0;
9091 #endif
9092 #ifdef FEAT_RIGHTLEFT
9093     static int	save_ri = 0;
9094     static int	save_hkmap = 0;
9095 #endif
9096     buf_T	*buf;
9097 
9098     if (p_paste)
9099     {
9100 	/*
9101 	 * Paste switched from off to on.
9102 	 * Save the current values, so they can be restored later.
9103 	 */
9104 	if (!old_p_paste)
9105 	{
9106 	    /* save options for each buffer */
9107 	    for (buf = firstbuf; buf != NULL; buf = buf->b_next)
9108 	    {
9109 		buf->b_p_tw_nopaste = buf->b_p_tw;
9110 		buf->b_p_wm_nopaste = buf->b_p_wm;
9111 		buf->b_p_sts_nopaste = buf->b_p_sts;
9112 		buf->b_p_ai_nopaste = buf->b_p_ai;
9113 	    }
9114 
9115 	    /* save global options */
9116 	    save_sm = p_sm;
9117 #ifdef FEAT_CMDL_INFO
9118 	    save_ru = p_ru;
9119 #endif
9120 #ifdef FEAT_RIGHTLEFT
9121 	    save_ri = p_ri;
9122 	    save_hkmap = p_hkmap;
9123 #endif
9124 	    /* save global values for local buffer options */
9125 	    p_tw_nopaste = p_tw;
9126 	    p_wm_nopaste = p_wm;
9127 	    p_sts_nopaste = p_sts;
9128 	    p_ai_nopaste = p_ai;
9129 	}
9130 
9131 	/*
9132 	 * Always set the option values, also when 'paste' is set when it is
9133 	 * already on.
9134 	 */
9135 	/* set options for each buffer */
9136 	for (buf = firstbuf; buf != NULL; buf = buf->b_next)
9137 	{
9138 	    buf->b_p_tw = 0;	    /* textwidth is 0 */
9139 	    buf->b_p_wm = 0;	    /* wrapmargin is 0 */
9140 	    buf->b_p_sts = 0;	    /* softtabstop is 0 */
9141 	    buf->b_p_ai = 0;	    /* no auto-indent */
9142 	}
9143 
9144 	/* set global options */
9145 	p_sm = 0;		    /* no showmatch */
9146 #ifdef FEAT_CMDL_INFO
9147 # ifdef FEAT_WINDOWS
9148 	if (p_ru)
9149 	    status_redraw_all();    /* redraw to remove the ruler */
9150 # endif
9151 	p_ru = 0;		    /* no ruler */
9152 #endif
9153 #ifdef FEAT_RIGHTLEFT
9154 	p_ri = 0;		    /* no reverse insert */
9155 	p_hkmap = 0;		    /* no Hebrew keyboard */
9156 #endif
9157 	/* set global values for local buffer options */
9158 	p_tw = 0;
9159 	p_wm = 0;
9160 	p_sts = 0;
9161 	p_ai = 0;
9162     }
9163 
9164     /*
9165      * Paste switched from on to off: Restore saved values.
9166      */
9167     else if (old_p_paste)
9168     {
9169 	/* restore options for each buffer */
9170 	for (buf = firstbuf; buf != NULL; buf = buf->b_next)
9171 	{
9172 	    buf->b_p_tw = buf->b_p_tw_nopaste;
9173 	    buf->b_p_wm = buf->b_p_wm_nopaste;
9174 	    buf->b_p_sts = buf->b_p_sts_nopaste;
9175 	    buf->b_p_ai = buf->b_p_ai_nopaste;
9176 	}
9177 
9178 	/* restore global options */
9179 	p_sm = save_sm;
9180 #ifdef FEAT_CMDL_INFO
9181 # ifdef FEAT_WINDOWS
9182 	if (p_ru != save_ru)
9183 	    status_redraw_all();    /* redraw to draw the ruler */
9184 # endif
9185 	p_ru = save_ru;
9186 #endif
9187 #ifdef FEAT_RIGHTLEFT
9188 	p_ri = save_ri;
9189 	p_hkmap = save_hkmap;
9190 #endif
9191 	/* set global values for local buffer options */
9192 	p_tw = p_tw_nopaste;
9193 	p_wm = p_wm_nopaste;
9194 	p_sts = p_sts_nopaste;
9195 	p_ai = p_ai_nopaste;
9196     }
9197 
9198     old_p_paste = p_paste;
9199 }
9200 
9201 /*
9202  * vimrc_found() - Called when a ".vimrc" or "VIMINIT" has been found.
9203  *
9204  * Reset 'compatible' and set the values for options that didn't get set yet
9205  * to the Vim defaults.
9206  * Don't do this if the 'compatible' option has been set or reset before.
9207  */
9208     void
9209 vimrc_found()
9210 {
9211     int	    opt_idx;
9212 
9213     if (!option_was_set((char_u *)"cp"))
9214     {
9215 	p_cp = FALSE;
9216 	for (opt_idx = 0; !istermoption(&options[opt_idx]); opt_idx++)
9217 	    if (!(options[opt_idx].flags & (P_WAS_SET|P_VI_DEF)))
9218 		set_option_default(opt_idx, OPT_FREE, FALSE);
9219 	didset_options();
9220     }
9221 }
9222 
9223 /*
9224  * Set 'compatible' on or off.  Called for "-C" and "-N" command line arg.
9225  */
9226     void
9227 change_compatible(on)
9228     int	    on;
9229 {
9230     if (p_cp != on)
9231     {
9232 	p_cp = on;
9233 	compatible_set();
9234     }
9235     options[findoption((char_u *)"cp")].flags |= P_WAS_SET;
9236 }
9237 
9238 /*
9239  * Return TRUE when option "name" has been set.
9240  */
9241     int
9242 option_was_set(name)
9243     char_u	*name;
9244 {
9245     int idx;
9246 
9247     idx = findoption(name);
9248     if (idx < 0)	/* unknown option */
9249 	return FALSE;
9250     if (options[idx].flags & P_WAS_SET)
9251 	return TRUE;
9252     return FALSE;
9253 }
9254 
9255 /*
9256  * compatible_set() - Called when 'compatible' has been set or unset.
9257  *
9258  * When 'compatible' set: Set all relevant options (those that have the P_VIM)
9259  * flag) to a Vi compatible value.
9260  * When 'compatible' is unset: Set all options that have a different default
9261  * for Vim (without the P_VI_DEF flag) to that default.
9262  */
9263     static void
9264 compatible_set()
9265 {
9266     int	    opt_idx;
9267 
9268     for (opt_idx = 0; !istermoption(&options[opt_idx]); opt_idx++)
9269 	if (	   ((options[opt_idx].flags & P_VIM) && p_cp)
9270 		|| (!(options[opt_idx].flags & P_VI_DEF) && !p_cp))
9271 	    set_option_default(opt_idx, OPT_FREE, p_cp);
9272     didset_options();
9273 }
9274 
9275 #ifdef FEAT_LINEBREAK
9276 
9277 # if defined(__BORLANDC__) && (__BORLANDC__ < 0x500)
9278    /* Borland C++ screws up loop optimisation here (negri) */
9279 #  pragma option -O-l
9280 # endif
9281 
9282 /*
9283  * fill_breakat_flags() -- called when 'breakat' changes value.
9284  */
9285     static void
9286 fill_breakat_flags()
9287 {
9288     char_u	*c;
9289     int		i;
9290 
9291     for (i = 0; i < 256; i++)
9292 	breakat_flags[i] = FALSE;
9293 
9294     if (p_breakat != NULL)
9295 	for (c = p_breakat; *c; c++)
9296 	    breakat_flags[*c] = TRUE;
9297 }
9298 
9299 # if defined(__BORLANDC__) && (__BORLANDC__ < 0x500)
9300 #  pragma option -O.l
9301 # endif
9302 
9303 #endif
9304 
9305 /*
9306  * Check an option that can be a range of string values.
9307  *
9308  * Return OK for correct value, FAIL otherwise.
9309  * Empty is always OK.
9310  */
9311     static int
9312 check_opt_strings(val, values, list)
9313     char_u	*val;
9314     char	**values;
9315     int		list;	    /* when TRUE: accept a list of values */
9316 {
9317     return opt_strings_flags(val, values, NULL, list);
9318 }
9319 
9320 /*
9321  * Handle an option that can be a range of string values.
9322  * Set a flag in "*flagp" for each string present.
9323  *
9324  * Return OK for correct value, FAIL otherwise.
9325  * Empty is always OK.
9326  */
9327     static int
9328 opt_strings_flags(val, values, flagp, list)
9329     char_u	*val;		/* new value */
9330     char	**values;	/* array of valid string values */
9331     unsigned	*flagp;
9332     int		list;		/* when TRUE: accept a list of values */
9333 {
9334     int		i;
9335     int		len;
9336     unsigned	new_flags = 0;
9337 
9338     while (*val)
9339     {
9340 	for (i = 0; ; ++i)
9341 	{
9342 	    if (values[i] == NULL)	/* val not found in values[] */
9343 		return FAIL;
9344 
9345 	    len = (int)STRLEN(values[i]);
9346 	    if (STRNCMP(values[i], val, len) == 0
9347 		    && ((list && val[len] == ',') || val[len] == NUL))
9348 	    {
9349 		val += len + (val[len] == ',');
9350 		new_flags |= (1 << i);
9351 		break;		/* check next item in val list */
9352 	    }
9353 	}
9354     }
9355     if (flagp != NULL)
9356 	*flagp = new_flags;
9357 
9358     return OK;
9359 }
9360 
9361 /*
9362  * Read the 'wildmode' option, fill wim_flags[].
9363  */
9364     static int
9365 check_opt_wim()
9366 {
9367     char_u	new_wim_flags[4];
9368     char_u	*p;
9369     int		i;
9370     int		idx = 0;
9371 
9372     for (i = 0; i < 4; ++i)
9373 	new_wim_flags[i] = 0;
9374 
9375     for (p = p_wim; *p; ++p)
9376     {
9377 	for (i = 0; ASCII_ISALPHA(p[i]); ++i)
9378 	    ;
9379 	if (p[i] != NUL && p[i] != ',' && p[i] != ':')
9380 	    return FAIL;
9381 	if (i == 7 && STRNCMP(p, "longest", 7) == 0)
9382 	    new_wim_flags[idx] |= WIM_LONGEST;
9383 	else if (i == 4 && STRNCMP(p, "full", 4) == 0)
9384 	    new_wim_flags[idx] |= WIM_FULL;
9385 	else if (i == 4 && STRNCMP(p, "list", 4) == 0)
9386 	    new_wim_flags[idx] |= WIM_LIST;
9387 	else
9388 	    return FAIL;
9389 	p += i;
9390 	if (*p == NUL)
9391 	    break;
9392 	if (*p == ',')
9393 	{
9394 	    if (idx == 3)
9395 		return FAIL;
9396 	    ++idx;
9397 	}
9398     }
9399 
9400     /* fill remaining entries with last flag */
9401     while (idx < 3)
9402     {
9403 	new_wim_flags[idx + 1] = new_wim_flags[idx];
9404 	++idx;
9405     }
9406 
9407     /* only when there are no errors, wim_flags[] is changed */
9408     for (i = 0; i < 4; ++i)
9409 	wim_flags[i] = new_wim_flags[i];
9410     return OK;
9411 }
9412 
9413 /*
9414  * Check if backspacing over something is allowed.
9415  */
9416     int
9417 can_bs(what)
9418     int		what;	    /* BS_INDENT, BS_EOL or BS_START */
9419 {
9420     switch (*p_bs)
9421     {
9422 	case '2':	return TRUE;
9423 	case '1':	return (what != BS_START);
9424 	case '0':	return FALSE;
9425     }
9426     return vim_strchr(p_bs, what) != NULL;
9427 }
9428 
9429 /*
9430  * Save the current values of 'fileformat' and 'fileencoding', so that we know
9431  * the file must be considered changed when the value is different.
9432  */
9433     void
9434 save_file_ff(buf)
9435     buf_T	*buf;
9436 {
9437     buf->b_start_ffc = *buf->b_p_ff;
9438     buf->b_start_eol = buf->b_p_eol;
9439 #ifdef FEAT_MBYTE
9440     /* Only use free/alloc when necessary, they take time. */
9441     if (buf->b_start_fenc == NULL
9442 			     || STRCMP(buf->b_start_fenc, buf->b_p_fenc) != 0)
9443     {
9444 	vim_free(buf->b_start_fenc);
9445 	buf->b_start_fenc = vim_strsave(buf->b_p_fenc);
9446     }
9447 #endif
9448 }
9449 
9450 /*
9451  * Return TRUE if 'fileformat' and/or 'fileencoding' has a different value
9452  * from when editing started (save_file_ff() called).
9453  * Also when 'endofline' was changed and 'binary' is set.
9454  * Don't consider a new, empty buffer to be changed.
9455  */
9456     int
9457 file_ff_differs(buf)
9458     buf_T	*buf;
9459 {
9460     if ((buf->b_flags & BF_NEW)
9461 	    && buf->b_ml.ml_line_count == 1
9462 	    && *ml_get_buf(buf, (linenr_T)1, FALSE) == NUL)
9463 	return FALSE;
9464     if (buf->b_start_ffc != *buf->b_p_ff)
9465 	return TRUE;
9466     if (buf->b_p_bin && buf->b_start_eol != buf->b_p_eol)
9467 	return TRUE;
9468 #ifdef FEAT_MBYTE
9469     if (buf->b_start_fenc == NULL)
9470 	return (*buf->b_p_fenc != NUL);
9471     return (STRCMP(buf->b_start_fenc, buf->b_p_fenc) != 0);
9472 #else
9473     return FALSE;
9474 #endif
9475 }
9476 
9477 /*
9478  * return OK if "p" is a valid fileformat name, FAIL otherwise.
9479  */
9480     int
9481 check_ff_value(p)
9482     char_u	*p;
9483 {
9484     return check_opt_strings(p, p_ff_values, FALSE);
9485 }
9486