xref: /vim-8.2.3635/src/structs.h (revision 214641f7)
1 /* vi:set ts=8 sts=4 sw=4 noet:
2  *
3  * VIM - Vi IMproved	by Bram Moolenaar
4  *
5  * Do ":help uganda"  in Vim to read copying and usage conditions.
6  * Do ":help credits" in Vim to see a list of people who contributed.
7  */
8 
9 /*
10  * This file contains various definitions of structures that are used by Vim
11  */
12 
13 /*
14  * There is something wrong in the SAS compiler that makes typedefs not
15  * valid in include files.  Has been fixed in version 6.58.
16  */
17 #if defined(SASC) && SASC < 658
18 typedef long		linenr_T;
19 typedef int		colnr_T;
20 typedef unsigned short	short_u;
21 #endif
22 
23 /*
24  * position in file or buffer
25  */
26 typedef struct
27 {
28     linenr_T	lnum;	/* line number */
29     colnr_T	col;	/* column number */
30 #ifdef FEAT_VIRTUALEDIT
31     colnr_T	coladd;
32 #endif
33 } pos_T;
34 
35 #ifdef FEAT_VIRTUALEDIT
36 # define INIT_POS_T(l, c, ca) {l, c, ca}
37 #else
38 # define INIT_POS_T(l, c, ca) {l, c}
39 #endif
40 
41 /*
42  * Same, but without coladd.
43  */
44 typedef struct
45 {
46     linenr_T	lnum;	/* line number */
47     colnr_T	col;	/* column number */
48 } lpos_T;
49 
50 /*
51  * Structure used for growing arrays.
52  * This is used to store information that only grows, is deleted all at
53  * once, and needs to be accessed by index.  See ga_clear() and ga_grow().
54  */
55 typedef struct growarray
56 {
57     int	    ga_len;		    /* current number of items used */
58     int	    ga_maxlen;		    /* maximum number of items possible */
59     int	    ga_itemsize;	    /* sizeof(item) */
60     int	    ga_growsize;	    /* number of items to grow each time */
61     void    *ga_data;		    /* pointer to the first item */
62 } garray_T;
63 
64 #define GA_EMPTY    {0, 0, 0, 0, NULL}
65 
66 typedef struct window_S		win_T;
67 typedef struct wininfo_S	wininfo_T;
68 typedef struct frame_S		frame_T;
69 typedef int			scid_T;		/* script ID */
70 typedef struct file_buffer	buf_T;  /* forward declaration */
71 
72 /* Reference to a buffer that stores the value of buf_free_count.
73  * bufref_valid() only needs to check "buf" when the count differs.
74  */
75 typedef struct {
76     buf_T   *br_buf;
77     int	    br_buf_free_count;
78 } bufref_T;
79 
80 /*
81  * This is here because regexp.h needs pos_T and below regprog_T is used.
82  */
83 #include "regexp.h"
84 
85 /*
86  * This is here because gui.h needs the pos_T and win_T, and win_T needs gui.h
87  * for scrollbar_T.
88  */
89 #ifdef FEAT_GUI
90 # include "gui.h"
91 #else
92 # ifdef FEAT_XCLIPBOARD
93 #  include <X11/Intrinsic.h>
94 # endif
95 # define guicolor_T long
96 # define INVALCOLOR ((guicolor_T)0x1ffffff)
97 #endif
98 
99 /*
100  * marks: positions in a file
101  * (a normal mark is a lnum/col pair, the same as a file position)
102  */
103 
104 /* (Note: for EBCDIC there are more than 26, because there are gaps in the
105  * alphabet coding.  To minimize changes to the code, I decided to just
106  * increase the number of possible marks. */
107 #define NMARKS		('z' - 'a' + 1)	/* max. # of named marks */
108 #define JUMPLISTSIZE	100		/* max. # of marks in jump list */
109 #define TAGSTACKSIZE	20		/* max. # of tags in tag stack */
110 
111 typedef struct filemark
112 {
113     pos_T	mark;		/* cursor position */
114     int		fnum;		/* file number */
115 } fmark_T;
116 
117 /* Xtended file mark: also has a file name */
118 typedef struct xfilemark
119 {
120     fmark_T	fmark;
121     char_u	*fname;		/* file name, used when fnum == 0 */
122 #ifdef FEAT_VIMINFO
123     time_T	time_set;
124 #endif
125 } xfmark_T;
126 
127 /*
128  * The taggy struct is used to store the information about a :tag command.
129  */
130 typedef struct taggy
131 {
132     char_u	*tagname;	/* tag name */
133     fmark_T	fmark;		/* cursor position BEFORE ":tag" */
134     int		cur_match;	/* match number */
135     int		cur_fnum;	/* buffer number used for cur_match */
136 } taggy_T;
137 
138 /*
139  * Structure that contains all options that are local to a window.
140  * Used twice in a window: for the current buffer and for all buffers.
141  * Also used in wininfo_T.
142  */
143 typedef struct
144 {
145 #ifdef FEAT_ARABIC
146     int		wo_arab;
147 # define w_p_arab w_onebuf_opt.wo_arab	/* 'arabic' */
148 #endif
149 #ifdef FEAT_LINEBREAK
150     int		wo_bri;
151 # define w_p_bri w_onebuf_opt.wo_bri	/* 'breakindent' */
152     char_u	*wo_briopt;
153 # define w_p_briopt w_onebuf_opt.wo_briopt /* 'breakindentopt' */
154 #endif
155 #ifdef FEAT_DIFF
156     int		wo_diff;
157 # define w_p_diff w_onebuf_opt.wo_diff	/* 'diff' */
158 #endif
159 #ifdef FEAT_FOLDING
160     long	wo_fdc;
161 # define w_p_fdc w_onebuf_opt.wo_fdc	/* 'foldcolumn' */
162     int		wo_fdc_save;
163 # define w_p_fdc_save w_onebuf_opt.wo_fdc_save	/* 'foldenable' saved for diff mode */
164     int		wo_fen;
165 # define w_p_fen w_onebuf_opt.wo_fen	/* 'foldenable' */
166     int		wo_fen_save;
167 # define w_p_fen_save w_onebuf_opt.wo_fen_save	/* 'foldenable' saved for diff mode */
168     char_u	*wo_fdi;
169 # define w_p_fdi w_onebuf_opt.wo_fdi	/* 'foldignore' */
170     long	wo_fdl;
171 # define w_p_fdl w_onebuf_opt.wo_fdl	/* 'foldlevel' */
172     int		wo_fdl_save;
173 # define w_p_fdl_save w_onebuf_opt.wo_fdl_save	/* 'foldlevel' state saved for diff mode */
174     char_u	*wo_fdm;
175 # define w_p_fdm w_onebuf_opt.wo_fdm	/* 'foldmethod' */
176     char_u	*wo_fdm_save;
177 # define w_p_fdm_save w_onebuf_opt.wo_fdm_save	/* 'fdm' saved for diff mode */
178     long	wo_fml;
179 # define w_p_fml w_onebuf_opt.wo_fml	/* 'foldminlines' */
180     long	wo_fdn;
181 # define w_p_fdn w_onebuf_opt.wo_fdn	/* 'foldnestmax' */
182 # ifdef FEAT_EVAL
183     char_u	*wo_fde;
184 # define w_p_fde w_onebuf_opt.wo_fde	/* 'foldexpr' */
185     char_u	*wo_fdt;
186 #  define w_p_fdt w_onebuf_opt.wo_fdt	/* 'foldtext' */
187 # endif
188     char_u	*wo_fmr;
189 # define w_p_fmr w_onebuf_opt.wo_fmr	/* 'foldmarker' */
190 #endif
191 #ifdef FEAT_LINEBREAK
192     int		wo_lbr;
193 # define w_p_lbr w_onebuf_opt.wo_lbr	/* 'linebreak' */
194 #endif
195     int		wo_list;
196 #define w_p_list w_onebuf_opt.wo_list	/* 'list' */
197     int		wo_nu;
198 #define w_p_nu w_onebuf_opt.wo_nu	/* 'number' */
199     int		wo_rnu;
200 #define w_p_rnu w_onebuf_opt.wo_rnu	/* 'relativenumber' */
201 #ifdef FEAT_LINEBREAK
202     long	wo_nuw;
203 # define w_p_nuw w_onebuf_opt.wo_nuw	/* 'numberwidth' */
204 #endif
205 #if defined(FEAT_WINDOWS)
206     int		wo_wfh;
207 # define w_p_wfh w_onebuf_opt.wo_wfh	/* 'winfixheight' */
208     int		wo_wfw;
209 # define w_p_wfw w_onebuf_opt.wo_wfw	/* 'winfixwidth' */
210 #endif
211 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
212     int		wo_pvw;
213 # define w_p_pvw w_onebuf_opt.wo_pvw	/* 'previewwindow' */
214 #endif
215 #ifdef FEAT_RIGHTLEFT
216     int		wo_rl;
217 # define w_p_rl w_onebuf_opt.wo_rl	/* 'rightleft' */
218     char_u	*wo_rlc;
219 # define w_p_rlc w_onebuf_opt.wo_rlc	/* 'rightleftcmd' */
220 #endif
221     long	wo_scr;
222 #define w_p_scr w_onebuf_opt.wo_scr	/* 'scroll' */
223 #ifdef FEAT_SPELL
224     int		wo_spell;
225 # define w_p_spell w_onebuf_opt.wo_spell /* 'spell' */
226 #endif
227 #ifdef FEAT_SYN_HL
228     int		wo_cuc;
229 # define w_p_cuc w_onebuf_opt.wo_cuc	/* 'cursorcolumn' */
230     int		wo_cul;
231 # define w_p_cul w_onebuf_opt.wo_cul	/* 'cursorline' */
232     char_u	*wo_cc;
233 # define w_p_cc w_onebuf_opt.wo_cc	/* 'colorcolumn' */
234 #endif
235 #ifdef FEAT_STL_OPT
236     char_u	*wo_stl;
237 #define w_p_stl w_onebuf_opt.wo_stl	/* 'statusline' */
238 #endif
239 #ifdef FEAT_SCROLLBIND
240     int		wo_scb;
241 # define w_p_scb w_onebuf_opt.wo_scb	/* 'scrollbind' */
242     int		wo_diff_saved; /* options were saved for starting diff mode */
243 # define w_p_diff_saved w_onebuf_opt.wo_diff_saved
244     int		wo_scb_save;	/* 'scrollbind' saved for diff mode*/
245 # define w_p_scb_save w_onebuf_opt.wo_scb_save
246 #endif
247     int		wo_wrap;
248 #define w_p_wrap w_onebuf_opt.wo_wrap	/* 'wrap' */
249 #ifdef FEAT_DIFF
250     int		wo_wrap_save;	/* 'wrap' state saved for diff mode*/
251 # define w_p_wrap_save w_onebuf_opt.wo_wrap_save
252 #endif
253 #ifdef FEAT_CONCEAL
254     char_u	*wo_cocu;		/* 'concealcursor' */
255 # define w_p_cocu w_onebuf_opt.wo_cocu
256     long	wo_cole;		/* 'conceallevel' */
257 # define w_p_cole w_onebuf_opt.wo_cole
258 #endif
259 #ifdef FEAT_CURSORBIND
260     int		wo_crb;
261 # define w_p_crb w_onebuf_opt.wo_crb	/* 'cursorbind' */
262     int		wo_crb_save;	/* 'cursorbind' state saved for diff mode*/
263 # define w_p_crb_save w_onebuf_opt.wo_crb_save
264 #endif
265 #ifdef FEAT_SIGNS
266     char_u	*wo_scl;
267 # define w_p_scl w_onebuf_opt.wo_scl	/* 'signcolumn' */
268 #endif
269 
270 #ifdef FEAT_EVAL
271     int		wo_scriptID[WV_COUNT];	/* SIDs for window-local options */
272 # define w_p_scriptID w_onebuf_opt.wo_scriptID
273 #endif
274 } winopt_T;
275 
276 /*
277  * Window info stored with a buffer.
278  *
279  * Two types of info are kept for a buffer which are associated with a
280  * specific window:
281  * 1. Each window can have a different line number associated with a buffer.
282  * 2. The window-local options for a buffer work in a similar way.
283  * The window-info is kept in a list at b_wininfo.  It is kept in
284  * most-recently-used order.
285  */
286 struct wininfo_S
287 {
288     wininfo_T	*wi_next;	/* next entry or NULL for last entry */
289     wininfo_T	*wi_prev;	/* previous entry or NULL for first entry */
290     win_T	*wi_win;	/* pointer to window that did set wi_fpos */
291     pos_T	wi_fpos;	/* last cursor position in the file */
292     int		wi_optset;	/* TRUE when wi_opt has useful values */
293     winopt_T	wi_opt;		/* local window options */
294 #ifdef FEAT_FOLDING
295     int		wi_fold_manual;	/* copy of w_fold_manual */
296     garray_T	wi_folds;	/* clone of w_folds */
297 #endif
298 };
299 
300 /*
301  * Info used to pass info about a fold from the fold-detection code to the
302  * code that displays the foldcolumn.
303  */
304 typedef struct foldinfo
305 {
306     int		fi_level;	/* level of the fold; when this is zero the
307 				   other fields are invalid */
308     int		fi_lnum;	/* line number where fold starts */
309     int		fi_low_level;	/* lowest fold level that starts in the same
310 				   line */
311 } foldinfo_T;
312 
313 /* Structure to store info about the Visual area. */
314 typedef struct
315 {
316     pos_T	vi_start;	/* start pos of last VIsual */
317     pos_T	vi_end;		/* end position of last VIsual */
318     int		vi_mode;	/* VIsual_mode of last VIsual */
319     colnr_T	vi_curswant;	/* MAXCOL from w_curswant */
320 } visualinfo_T;
321 
322 /*
323  * structures used for undo
324  */
325 
326 typedef struct u_entry u_entry_T;
327 typedef struct u_header u_header_T;
328 struct u_entry
329 {
330     u_entry_T	*ue_next;	/* pointer to next entry in list */
331     linenr_T	ue_top;		/* number of line above undo block */
332     linenr_T	ue_bot;		/* number of line below undo block */
333     linenr_T	ue_lcount;	/* linecount when u_save called */
334     char_u	**ue_array;	/* array of lines in undo block */
335     long	ue_size;	/* number of lines in ue_array */
336 #ifdef U_DEBUG
337     int		ue_magic;	/* magic number to check allocation */
338 #endif
339 };
340 
341 struct u_header
342 {
343     /* The following have a pointer and a number. The number is used when
344      * reading the undo file in u_read_undo() */
345     union {
346 	u_header_T *ptr;	/* pointer to next undo header in list */
347 	long	   seq;
348     } uh_next;
349     union {
350 	u_header_T *ptr;	/* pointer to previous header in list */
351 	long	   seq;
352     } uh_prev;
353     union {
354 	u_header_T *ptr;	/* pointer to next header for alt. redo */
355 	long	   seq;
356     } uh_alt_next;
357     union {
358 	u_header_T *ptr;	/* pointer to previous header for alt. redo */
359 	long	   seq;
360     } uh_alt_prev;
361     long	uh_seq;		/* sequence number, higher == newer undo */
362     int		uh_walk;	/* used by undo_time() */
363     u_entry_T	*uh_entry;	/* pointer to first entry */
364     u_entry_T	*uh_getbot_entry; /* pointer to where ue_bot must be set */
365     pos_T	uh_cursor;	/* cursor position before saving */
366 #ifdef FEAT_VIRTUALEDIT
367     long	uh_cursor_vcol;
368 #endif
369     int		uh_flags;	/* see below */
370     pos_T	uh_namedm[NMARKS];	/* marks before undo/after redo */
371     visualinfo_T uh_visual;	/* Visual areas before undo/after redo */
372     time_T	uh_time;	/* timestamp when the change was made */
373     long	uh_save_nr;	/* set when the file was saved after the
374 				   changes in this block */
375 #ifdef U_DEBUG
376     int		uh_magic;	/* magic number to check allocation */
377 #endif
378 };
379 
380 /* values for uh_flags */
381 #define UH_CHANGED  0x01	/* b_changed flag before undo/after redo */
382 #define UH_EMPTYBUF 0x02	/* buffer was empty */
383 
384 /*
385  * structures used in undo.c
386  */
387 #if VIM_SIZEOF_INT > 2
388 # define ALIGN_LONG	/* longword alignment and use filler byte */
389 # define ALIGN_SIZE (sizeof(long))
390 #else
391 # define ALIGN_SIZE (sizeof(short))
392 #endif
393 
394 #define ALIGN_MASK (ALIGN_SIZE - 1)
395 
396 typedef struct m_info minfo_T;
397 
398 /*
399  * structure used to link chunks in one of the free chunk lists.
400  */
401 struct m_info
402 {
403 #ifdef ALIGN_LONG
404     long_u	m_size;		/* size of the chunk (including m_info) */
405 #else
406     short_u	m_size;		/* size of the chunk (including m_info) */
407 #endif
408     minfo_T	*m_next;	/* pointer to next free chunk in the list */
409 };
410 
411 /*
412  * things used in memfile.c
413  */
414 
415 typedef struct block_hdr    bhdr_T;
416 typedef struct memfile	    memfile_T;
417 typedef long		    blocknr_T;
418 
419 /*
420  * mf_hashtab_T is a chained hashtable with blocknr_T key and arbitrary
421  * structures as items.  This is an intrusive data structure: we require
422  * that items begin with mf_hashitem_T which contains the key and linked
423  * list pointers.  List of items in each bucket is doubly-linked.
424  */
425 
426 typedef struct mf_hashitem_S mf_hashitem_T;
427 
428 struct mf_hashitem_S
429 {
430     mf_hashitem_T   *mhi_next;
431     mf_hashitem_T   *mhi_prev;
432     blocknr_T	    mhi_key;
433 };
434 
435 #define MHT_INIT_SIZE   64
436 
437 typedef struct mf_hashtab_S
438 {
439     long_u	    mht_mask;	    /* mask used for hash value (nr of items
440 				     * in array is "mht_mask" + 1) */
441     long_u	    mht_count;	    /* nr of items inserted into hashtable */
442     mf_hashitem_T   **mht_buckets;  /* points to mht_small_buckets or
443 				     *dynamically allocated array */
444     mf_hashitem_T   *mht_small_buckets[MHT_INIT_SIZE];   /* initial buckets */
445     char	    mht_fixed;	    /* non-zero value forbids growth */
446 } mf_hashtab_T;
447 
448 /*
449  * for each (previously) used block in the memfile there is one block header.
450  *
451  * The block may be linked in the used list OR in the free list.
452  * The used blocks are also kept in hash lists.
453  *
454  * The used list is a doubly linked list, most recently used block first.
455  *	The blocks in the used list have a block of memory allocated.
456  *	mf_used_count is the number of pages in the used list.
457  * The hash lists are used to quickly find a block in the used list.
458  * The free list is a single linked list, not sorted.
459  *	The blocks in the free list have no block of memory allocated and
460  *	the contents of the block in the file (if any) is irrelevant.
461  */
462 
463 struct block_hdr
464 {
465     mf_hashitem_T bh_hashitem;      /* header for hash table and key */
466 #define bh_bnum bh_hashitem.mhi_key /* block number, part of bh_hashitem */
467 
468     bhdr_T	*bh_next;	    /* next block_hdr in free or used list */
469     bhdr_T	*bh_prev;	    /* previous block_hdr in used list */
470     char_u	*bh_data;	    /* pointer to memory (for used block) */
471     int		bh_page_count;	    /* number of pages in this block */
472 
473 #define BH_DIRTY    1
474 #define BH_LOCKED   2
475     char	bh_flags;	    /* BH_DIRTY or BH_LOCKED */
476 };
477 
478 /*
479  * when a block with a negative number is flushed to the file, it gets
480  * a positive number. Because the reference to the block is still the negative
481  * number, we remember the translation to the new positive number in the
482  * double linked trans lists. The structure is the same as the hash lists.
483  */
484 typedef struct nr_trans NR_TRANS;
485 
486 struct nr_trans
487 {
488     mf_hashitem_T nt_hashitem;		/* header for hash table and key */
489 #define nt_old_bnum nt_hashitem.mhi_key	/* old, negative, number */
490 
491     blocknr_T	nt_new_bnum;		/* new, positive, number */
492 };
493 
494 
495 typedef struct buffblock buffblock_T;
496 typedef struct buffheader buffheader_T;
497 
498 /*
499  * structure used to store one block of the stuff/redo/recording buffers
500  */
501 struct buffblock
502 {
503     buffblock_T	*b_next;	/* pointer to next buffblock */
504     char_u	b_str[1];	/* contents (actually longer) */
505 };
506 
507 /*
508  * header used for the stuff buffer and the redo buffer
509  */
510 struct buffheader
511 {
512     buffblock_T	bh_first;	/* first (dummy) block of list */
513     buffblock_T	*bh_curr;	/* buffblock for appending */
514     int		bh_index;	/* index for reading */
515     int		bh_space;	/* space in bh_curr for appending */
516 };
517 
518 /*
519  * used for completion on the command line
520  */
521 typedef struct expand
522 {
523     int		xp_context;		/* type of expansion */
524     char_u	*xp_pattern;		/* start of item to expand */
525     int		xp_pattern_len;		/* bytes in xp_pattern before cursor */
526 #if defined(FEAT_USR_CMDS) && defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
527     char_u	*xp_arg;		/* completion function */
528     int		xp_scriptID;		/* SID for completion function */
529 #endif
530     int		xp_backslash;		/* one of the XP_BS_ values */
531 #ifndef BACKSLASH_IN_FILENAME
532     int		xp_shell;		/* TRUE for a shell command, more
533 					   characters need to be escaped */
534 #endif
535     int		xp_numfiles;		/* number of files found by
536 						    file name completion */
537     char_u	**xp_files;		/* list of files */
538     char_u	*xp_line;		/* text being completed */
539     int		xp_col;			/* cursor position in line */
540 } expand_T;
541 
542 /* values for xp_backslash */
543 #define XP_BS_NONE	0	/* nothing special for backslashes */
544 #define XP_BS_ONE	1	/* uses one backslash before a space */
545 #define XP_BS_THREE	2	/* uses three backslashes before a space */
546 
547 /*
548  * Command modifiers ":vertical", ":browse", ":confirm" and ":hide" set a flag.
549  * This needs to be saved for recursive commands, put them in a structure for
550  * easy manipulation.
551  */
552 typedef struct
553 {
554     int		hide;			/* TRUE when ":hide" was used */
555 # ifdef FEAT_BROWSE_CMD
556     int		browse;			/* TRUE to invoke file dialog */
557 # endif
558 # ifdef FEAT_WINDOWS
559     int		split;			/* flags for win_split() */
560     int		tab;			/* > 0 when ":tab" was used */
561 # endif
562 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
563     int		confirm;		/* TRUE to invoke yes/no dialog */
564 # endif
565     int		keepalt;		/* TRUE when ":keepalt" was used */
566     int		keepmarks;		/* TRUE when ":keepmarks" was used */
567     int		keepjumps;		/* TRUE when ":keepjumps" was used */
568     int		lockmarks;		/* TRUE when ":lockmarks" was used */
569     int		keeppatterns;		/* TRUE when ":keeppatterns" was used */
570     int		noswapfile;		/* TRUE when ":noswapfile" was used */
571 # ifdef FEAT_AUTOCMD
572     char_u	*save_ei;		/* saved value of 'eventignore' */
573 # endif
574     regmatch_T	filter_regmatch;	/* set by :filter /pat/ */
575     int		filter_force;		/* set for :filter! */
576 } cmdmod_T;
577 
578 #define MF_SEED_LEN	8
579 
580 struct memfile
581 {
582     char_u	*mf_fname;		/* name of the file */
583     char_u	*mf_ffname;		/* idem, full path */
584     int		mf_fd;			/* file descriptor */
585     bhdr_T	*mf_free_first;		/* first block_hdr in free list */
586     bhdr_T	*mf_used_first;		/* mru block_hdr in used list */
587     bhdr_T	*mf_used_last;		/* lru block_hdr in used list */
588     unsigned	mf_used_count;		/* number of pages in used list */
589     unsigned	mf_used_count_max;	/* maximum number of pages in memory */
590     mf_hashtab_T mf_hash;		/* hash lists */
591     mf_hashtab_T mf_trans;		/* trans lists */
592     blocknr_T	mf_blocknr_max;		/* highest positive block number + 1*/
593     blocknr_T	mf_blocknr_min;		/* lowest negative block number - 1 */
594     blocknr_T	mf_neg_count;		/* number of negative blocks numbers */
595     blocknr_T	mf_infile_count;	/* number of pages in the file */
596     unsigned	mf_page_size;		/* number of bytes in a page */
597     int		mf_dirty;		/* TRUE if there are dirty blocks */
598 #ifdef FEAT_CRYPT
599     buf_T	*mf_buffer;		/* buffer this memfile is for */
600     char_u	mf_seed[MF_SEED_LEN];	/* seed for encryption */
601 
602     /* Values for key, method and seed used for reading data blocks when
603      * updating for a newly set key or method. Only when mf_old_key != NULL. */
604     char_u	*mf_old_key;
605     int		mf_old_cm;
606     char_u	mf_old_seed[MF_SEED_LEN];
607 #endif
608 };
609 
610 /*
611  * things used in memline.c
612  */
613 /*
614  * When searching for a specific line, we remember what blocks in the tree
615  * are the branches leading to that block. This is stored in ml_stack.  Each
616  * entry is a pointer to info in a block (may be data block or pointer block)
617  */
618 typedef struct info_pointer
619 {
620     blocknr_T	ip_bnum;	/* block number */
621     linenr_T	ip_low;		/* lowest lnum in this block */
622     linenr_T	ip_high;	/* highest lnum in this block */
623     int		ip_index;	/* index for block with current lnum */
624 } infoptr_T;	/* block/index pair */
625 
626 #ifdef FEAT_BYTEOFF
627 typedef struct ml_chunksize
628 {
629     int		mlcs_numlines;
630     long	mlcs_totalsize;
631 } chunksize_T;
632 
633  /* Flags when calling ml_updatechunk() */
634 
635 #define ML_CHNK_ADDLINE 1
636 #define ML_CHNK_DELLINE 2
637 #define ML_CHNK_UPDLINE 3
638 #endif
639 
640 /*
641  * the memline structure holds all the information about a memline
642  */
643 typedef struct memline
644 {
645     linenr_T	ml_line_count;	/* number of lines in the buffer */
646 
647     memfile_T	*ml_mfp;	/* pointer to associated memfile */
648 
649 #define ML_EMPTY	1	/* empty buffer */
650 #define ML_LINE_DIRTY	2	/* cached line was changed and allocated */
651 #define ML_LOCKED_DIRTY	4	/* ml_locked was changed */
652 #define ML_LOCKED_POS	8	/* ml_locked needs positive block number */
653     int		ml_flags;
654 
655     infoptr_T	*ml_stack;	/* stack of pointer blocks (array of IPTRs) */
656     int		ml_stack_top;	/* current top of ml_stack */
657     int		ml_stack_size;	/* total number of entries in ml_stack */
658 
659     linenr_T	ml_line_lnum;	/* line number of cached line, 0 if not valid */
660     char_u	*ml_line_ptr;	/* pointer to cached line */
661 
662     bhdr_T	*ml_locked;	/* block used by last ml_get */
663     linenr_T	ml_locked_low;	/* first line in ml_locked */
664     linenr_T	ml_locked_high;	/* last line in ml_locked */
665     int		ml_locked_lineadd;  /* number of lines inserted in ml_locked */
666 #ifdef FEAT_BYTEOFF
667     chunksize_T *ml_chunksize;
668     int		ml_numchunks;
669     int		ml_usedchunks;
670 #endif
671 } memline_T;
672 
673 #if defined(FEAT_SIGNS) || defined(PROTO)
674 typedef struct signlist signlist_T;
675 
676 struct signlist
677 {
678     int		id;		/* unique identifier for each placed sign */
679     linenr_T	lnum;		/* line number which has this sign */
680     int		typenr;		/* typenr of sign */
681     signlist_T	*next;		/* next signlist entry */
682 # ifdef FEAT_NETBEANS_INTG
683     signlist_T  *prev;		/* previous entry -- for easy reordering */
684 # endif
685 };
686 
687 /* type argument for buf_getsigntype() */
688 #define SIGN_ANY	0
689 #define SIGN_LINEHL	1
690 #define SIGN_ICON	2
691 #define SIGN_TEXT	3
692 #endif
693 
694 /*
695  * Argument list: Array of file names.
696  * Used for the global argument list and the argument lists local to a window.
697  */
698 typedef struct arglist
699 {
700     garray_T	al_ga;		/* growarray with the array of file names */
701     int		al_refcount;	/* number of windows using this arglist */
702     int		id;		/* id of this arglist */
703 } alist_T;
704 
705 /*
706  * For each argument remember the file name as it was given, and the buffer
707  * number that contains the expanded file name (required for when ":cd" is
708  * used.
709  */
710 typedef struct argentry
711 {
712     char_u	*ae_fname;	/* file name as specified */
713     int		ae_fnum;	/* buffer number with expanded file name */
714 } aentry_T;
715 
716 #ifdef FEAT_WINDOWS
717 # define ALIST(win) (win)->w_alist
718 #else
719 # define ALIST(win) (&global_alist)
720 #endif
721 #define GARGLIST	((aentry_T *)global_alist.al_ga.ga_data)
722 #define ARGLIST		((aentry_T *)ALIST(curwin)->al_ga.ga_data)
723 #define WARGLIST(wp)	((aentry_T *)ALIST(wp)->al_ga.ga_data)
724 #define AARGLIST(al)	((aentry_T *)((al)->al_ga.ga_data))
725 #define GARGCOUNT	(global_alist.al_ga.ga_len)
726 #define ARGCOUNT	(ALIST(curwin)->al_ga.ga_len)
727 #define WARGCOUNT(wp)	(ALIST(wp)->al_ga.ga_len)
728 
729 /*
730  * A list used for saving values of "emsg_silent".  Used by ex_try() to save the
731  * value of "emsg_silent" if it was non-zero.  When this is done, the CSF_SILENT
732  * flag below is set.
733  */
734 
735 typedef struct eslist_elem eslist_T;
736 struct eslist_elem
737 {
738     int		saved_emsg_silent;	/* saved value of "emsg_silent" */
739     eslist_T	*next;			/* next element on the list */
740 };
741 
742 /*
743  * For conditional commands a stack is kept of nested conditionals.
744  * When cs_idx < 0, there is no conditional command.
745  */
746 #define CSTACK_LEN	50
747 
748 struct condstack
749 {
750     short	cs_flags[CSTACK_LEN];	/* CSF_ flags */
751     char	cs_pending[CSTACK_LEN];	/* CSTP_: what's pending in ":finally"*/
752     union {
753 	void	*csp_rv[CSTACK_LEN];	/* return typeval for pending return */
754 	void	*csp_ex[CSTACK_LEN];	/* exception for pending throw */
755     }		cs_pend;
756     void	*cs_forinfo[CSTACK_LEN]; /* info used by ":for" */
757     int		cs_line[CSTACK_LEN];	/* line nr of ":while"/":for" line */
758     int		cs_idx;			/* current entry, or -1 if none */
759     int		cs_looplevel;		/* nr of nested ":while"s and ":for"s */
760     int		cs_trylevel;		/* nr of nested ":try"s */
761     eslist_T	*cs_emsg_silent_list;	/* saved values of "emsg_silent" */
762     char	cs_lflags;		/* loop flags: CSL_ flags */
763 };
764 # define cs_rettv	cs_pend.csp_rv
765 # define cs_exception	cs_pend.csp_ex
766 
767 /* There is no CSF_IF, the lack of CSF_WHILE, CSF_FOR and CSF_TRY means ":if"
768  * was used. */
769 # define CSF_TRUE	0x0001	/* condition was TRUE */
770 # define CSF_ACTIVE	0x0002	/* current state is active */
771 # define CSF_ELSE	0x0004	/* ":else" has been passed */
772 # define CSF_WHILE	0x0008	/* is a ":while" */
773 # define CSF_FOR	0x0010	/* is a ":for" */
774 
775 # define CSF_TRY	0x0100	/* is a ":try" */
776 # define CSF_FINALLY	0x0200	/* ":finally" has been passed */
777 # define CSF_THROWN	0x0400	/* exception thrown to this try conditional */
778 # define CSF_CAUGHT	0x0800  /* exception caught by this try conditional */
779 # define CSF_SILENT	0x1000	/* "emsg_silent" reset by ":try" */
780 /* Note that CSF_ELSE is only used when CSF_TRY and CSF_WHILE are unset
781  * (an ":if"), and CSF_SILENT is only used when CSF_TRY is set. */
782 
783 /*
784  * What's pending for being reactivated at the ":endtry" of this try
785  * conditional:
786  */
787 # define CSTP_NONE	0	/* nothing pending in ":finally" clause */
788 # define CSTP_ERROR	1	/* an error is pending */
789 # define CSTP_INTERRUPT	2	/* an interrupt is pending */
790 # define CSTP_THROW	4	/* a throw is pending */
791 # define CSTP_BREAK	8	/* ":break" is pending */
792 # define CSTP_CONTINUE	16	/* ":continue" is pending */
793 # define CSTP_RETURN	24	/* ":return" is pending */
794 # define CSTP_FINISH	32	/* ":finish" is pending */
795 
796 /*
797  * Flags for the cs_lflags item in struct condstack.
798  */
799 # define CSL_HAD_LOOP	 1	/* just found ":while" or ":for" */
800 # define CSL_HAD_ENDLOOP 2	/* just found ":endwhile" or ":endfor" */
801 # define CSL_HAD_CONT	 4	/* just found ":continue" */
802 # define CSL_HAD_FINA	 8	/* just found ":finally" */
803 
804 /*
805  * A list of error messages that can be converted to an exception.  "throw_msg"
806  * is only set in the first element of the list.  Usually, it points to the
807  * original message stored in that element, but sometimes it points to a later
808  * message in the list.  See cause_errthrow() below.
809  */
810 struct msglist
811 {
812     char_u		*msg;		/* original message */
813     char_u		*throw_msg;	/* msg to throw: usually original one */
814     struct msglist	*next;		/* next of several messages in a row */
815 };
816 
817 /*
818  * The exception types.
819  */
820 typedef enum
821 {
822     ET_USER,		/* exception caused by ":throw" command */
823     ET_ERROR,		/* error exception */
824     ET_INTERRUPT	/* interrupt exception triggered by Ctrl-C */
825 } except_type_T;
826 
827 /*
828  * Structure describing an exception.
829  * (don't use "struct exception", it's used by the math library).
830  */
831 typedef struct vim_exception except_T;
832 struct vim_exception
833 {
834     except_type_T	type;		/* exception type */
835     char_u		*value;		/* exception value */
836     struct msglist	*messages;	/* message(s) causing error exception */
837     char_u		*throw_name;	/* name of the throw point */
838     linenr_T		throw_lnum;	/* line number of the throw point */
839     except_T		*caught;	/* next exception on the caught stack */
840 };
841 
842 /*
843  * Structure to save the error/interrupt/exception state between calls to
844  * enter_cleanup() and leave_cleanup().  Must be allocated as an automatic
845  * variable by the (common) caller of these functions.
846  */
847 typedef struct cleanup_stuff cleanup_T;
848 struct cleanup_stuff
849 {
850     int pending;		/* error/interrupt/exception state */
851     except_T *exception;	/* exception value */
852 };
853 
854 #ifdef FEAT_SYN_HL
855 /* struct passed to in_id_list() */
856 struct sp_syn
857 {
858     int		inc_tag;	/* ":syn include" unique tag */
859     short	id;		/* highlight group ID of item */
860     short	*cont_in_list;	/* cont.in group IDs, if non-zero */
861 };
862 
863 /*
864  * Each keyword has one keyentry, which is linked in a hash list.
865  */
866 typedef struct keyentry keyentry_T;
867 
868 struct keyentry
869 {
870     keyentry_T	*ke_next;	/* next entry with identical "keyword[]" */
871     struct sp_syn k_syn;	/* struct passed to in_id_list() */
872     short	*next_list;	/* ID list for next match (if non-zero) */
873     int		flags;
874     int		k_char;		/* conceal substitute character */
875     char_u	keyword[1];	/* actually longer */
876 };
877 
878 /*
879  * Struct used to store one state of the state stack.
880  */
881 typedef struct buf_state
882 {
883     int		    bs_idx;	 /* index of pattern */
884     int		    bs_flags;	 /* flags for pattern */
885 #ifdef FEAT_CONCEAL
886     int		    bs_seqnr;	 /* stores si_seqnr */
887     int		    bs_cchar;	 /* stores si_cchar */
888 #endif
889     reg_extmatch_T *bs_extmatch; /* external matches from start pattern */
890 } bufstate_T;
891 
892 /*
893  * syn_state contains the syntax state stack for the start of one line.
894  * Used by b_sst_array[].
895  */
896 typedef struct syn_state synstate_T;
897 
898 struct syn_state
899 {
900     synstate_T	*sst_next;	/* next entry in used or free list */
901     linenr_T	sst_lnum;	/* line number for this state */
902     union
903     {
904 	bufstate_T	sst_stack[SST_FIX_STATES]; /* short state stack */
905 	garray_T	sst_ga;	/* growarray for long state stack */
906     } sst_union;
907     int		sst_next_flags;	/* flags for sst_next_list */
908     int		sst_stacksize;	/* number of states on the stack */
909     short	*sst_next_list;	/* "nextgroup" list in this state
910 				 * (this is a copy, don't free it! */
911     disptick_T	sst_tick;	/* tick when last displayed */
912     linenr_T	sst_change_lnum;/* when non-zero, change in this line
913 				 * may have made the state invalid */
914 };
915 #endif /* FEAT_SYN_HL */
916 
917 /*
918  * Structure shared between syntax.c, screen.c and gui_x11.c.
919  */
920 typedef struct attr_entry
921 {
922     short	    ae_attr;		/* HL_BOLD, etc. */
923     union
924     {
925 	struct
926 	{
927 	    char_u	    *start;	/* start escape sequence */
928 	    char_u	    *stop;	/* stop escape sequence */
929 	} term;
930 	struct
931 	{
932 	    /* These colors need to be > 8 bits to hold 256. */
933 	    short_u	    fg_color;	/* foreground color number */
934 	    short_u	    bg_color;	/* background color number */
935 # ifdef FEAT_TERMGUICOLORS
936 	    guicolor_T	    fg_rgb;	/* foreground color RGB */
937 	    guicolor_T	    bg_rgb;	/* background color RGB */
938 # endif
939 	} cterm;
940 # ifdef FEAT_GUI
941 	struct
942 	{
943 	    guicolor_T	    fg_color;	/* foreground color handle */
944 	    guicolor_T	    bg_color;	/* background color handle */
945 	    guicolor_T	    sp_color;	/* special color handle */
946 	    GuiFont	    font;	/* font handle */
947 #  ifdef FEAT_XFONTSET
948 	    GuiFontset	    fontset;	/* fontset handle */
949 #  endif
950 	} gui;
951 # endif
952     } ae_u;
953 } attrentry_T;
954 
955 #ifdef USE_ICONV
956 # ifdef HAVE_ICONV_H
957 #  include <iconv.h>
958 # else
959 #  if defined(MACOS_X)
960 #   include <sys/errno.h>
961 #   define EILSEQ ENOENT /* MacOS X does not have EILSEQ */
962 typedef struct _iconv_t *iconv_t;
963 #  else
964 #   if defined(MACOS_CLASSIC)
965 typedef struct _iconv_t *iconv_t;
966 #    define EINVAL	22
967 #    define E2BIG	7
968 #    define ENOENT	2
969 #    define EFAULT	14
970 #    define EILSEQ	123
971 #   else
972 #    include <errno.h>
973 #   endif
974 #  endif
975 typedef void *iconv_t;
976 # endif
977 #endif
978 
979 /*
980  * Used for the typeahead buffer: typebuf.
981  */
982 typedef struct
983 {
984     char_u	*tb_buf;	/* buffer for typed characters */
985     char_u	*tb_noremap;	/* mapping flags for characters in tb_buf[] */
986     int		tb_buflen;	/* size of tb_buf[] */
987     int		tb_off;		/* current position in tb_buf[] */
988     int		tb_len;		/* number of valid bytes in tb_buf[] */
989     int		tb_maplen;	/* nr of mapped bytes in tb_buf[] */
990     int		tb_silent;	/* nr of silently mapped bytes in tb_buf[] */
991     int		tb_no_abbr_cnt; /* nr of bytes without abbrev. in tb_buf[] */
992     int		tb_change_cnt;	/* nr of time tb_buf was changed; never zero */
993 } typebuf_T;
994 
995 /* Struct to hold the saved typeahead for save_typeahead(). */
996 typedef struct
997 {
998     typebuf_T		save_typebuf;
999     int			typebuf_valid;	    /* TRUE when save_typebuf valid */
1000     int			old_char;
1001     int			old_mod_mask;
1002     buffheader_T	save_readbuf1;
1003     buffheader_T	save_readbuf2;
1004 #ifdef USE_INPUT_BUF
1005     char_u		*save_inputbuf;
1006 #endif
1007 } tasave_T;
1008 
1009 /*
1010  * Used for conversion of terminal I/O and script files.
1011  */
1012 typedef struct
1013 {
1014     int		vc_type;	/* zero or one of the CONV_ values */
1015     int		vc_factor;	/* max. expansion factor */
1016 # ifdef WIN3264
1017     int		vc_cpfrom;	/* codepage to convert from (CONV_CODEPAGE) */
1018     int		vc_cpto;	/* codepage to convert to (CONV_CODEPAGE) */
1019 # endif
1020 # ifdef USE_ICONV
1021     iconv_t	vc_fd;		/* for CONV_ICONV */
1022 # endif
1023     int		vc_fail;	/* fail for invalid char, don't use '?' */
1024 } vimconv_T;
1025 
1026 /*
1027  * Structure used for reading from the viminfo file.
1028  */
1029 typedef struct
1030 {
1031     char_u	*vir_line;	/* text of the current line */
1032     FILE	*vir_fd;	/* file descriptor */
1033 #ifdef FEAT_MBYTE
1034     vimconv_T	vir_conv;	/* encoding conversion */
1035 #endif
1036     int		vir_version;	/* viminfo version detected or -1 */
1037     garray_T	vir_barlines;	/* lines starting with | */
1038 } vir_T;
1039 
1040 #define CONV_NONE		0
1041 #define CONV_TO_UTF8		1
1042 #define CONV_9_TO_UTF8		2
1043 #define CONV_TO_LATIN1		3
1044 #define CONV_TO_LATIN9		4
1045 #define CONV_ICONV		5
1046 #ifdef WIN3264
1047 # define CONV_CODEPAGE		10	/* codepage -> codepage */
1048 #endif
1049 #ifdef MACOS_X
1050 # define CONV_MAC_LATIN1	20
1051 # define CONV_LATIN1_MAC	21
1052 # define CONV_MAC_UTF8		22
1053 # define CONV_UTF8_MAC		23
1054 #endif
1055 
1056 /*
1057  * Structure used for mappings and abbreviations.
1058  */
1059 typedef struct mapblock mapblock_T;
1060 struct mapblock
1061 {
1062     mapblock_T	*m_next;	/* next mapblock in list */
1063     char_u	*m_keys;	/* mapped from, lhs */
1064     char_u	*m_str;		/* mapped to, rhs */
1065     char_u	*m_orig_str;	/* rhs as entered by the user */
1066     int		m_keylen;	/* strlen(m_keys) */
1067     int		m_mode;		/* valid mode */
1068     int		m_noremap;	/* if non-zero no re-mapping for m_str */
1069     char	m_silent;	/* <silent> used, don't echo commands */
1070     char	m_nowait;	/* <nowait> used */
1071 #ifdef FEAT_EVAL
1072     char	m_expr;		/* <expr> used, m_str is an expression */
1073     scid_T	m_script_ID;	/* ID of script where map was defined */
1074 #endif
1075 };
1076 
1077 /*
1078  * Used for highlighting in the status line.
1079  */
1080 struct stl_hlrec
1081 {
1082     char_u	*start;
1083     int		userhl;		/* 0: no HL, 1-9: User HL, < 0 for syn ID */
1084 };
1085 
1086 
1087 /*
1088  * Syntax items - usually buffer-specific.
1089  */
1090 
1091 /* Item for a hashtable.  "hi_key" can be one of three values:
1092  * NULL:	   Never been used
1093  * HI_KEY_REMOVED: Entry was removed
1094  * Otherwise:	   Used item, pointer to the actual key; this usually is
1095  *		   inside the item, subtract an offset to locate the item.
1096  *		   This reduces the size of hashitem by 1/3.
1097  */
1098 typedef struct hashitem_S
1099 {
1100     long_u	hi_hash;	/* cached hash number of hi_key */
1101     char_u	*hi_key;
1102 } hashitem_T;
1103 
1104 /* The address of "hash_removed" is used as a magic number for hi_key to
1105  * indicate a removed item. */
1106 #define HI_KEY_REMOVED &hash_removed
1107 #define HASHITEM_EMPTY(hi) ((hi)->hi_key == NULL || (hi)->hi_key == &hash_removed)
1108 
1109 /* Initial size for a hashtable.  Our items are relatively small and growing
1110  * is expensive, thus use 16 as a start.  Must be a power of 2. */
1111 #define HT_INIT_SIZE 16
1112 
1113 typedef struct hashtable_S
1114 {
1115     long_u	ht_mask;	/* mask used for hash value (nr of items in
1116 				 * array is "ht_mask" + 1) */
1117     long_u	ht_used;	/* number of items used */
1118     long_u	ht_filled;	/* number of items used + removed */
1119     int		ht_locked;	/* counter for hash_lock() */
1120     int		ht_error;	/* when set growing failed, can't add more
1121 				   items before growing works */
1122     hashitem_T	*ht_array;	/* points to the array, allocated when it's
1123 				   not "ht_smallarray" */
1124     hashitem_T	ht_smallarray[HT_INIT_SIZE];   /* initial array */
1125 } hashtab_T;
1126 
1127 typedef long_u hash_T;		/* Type for hi_hash */
1128 
1129 
1130 #ifdef FEAT_NUM64
1131 /* Use 64-bit Number. */
1132 # ifdef WIN3264
1133 #  ifdef PROTO
1134 typedef long		    varnumber_T;
1135 typedef unsigned long	    uvarnumber_T;
1136 #define VARNUM_MIN	    LONG_MIN
1137 #define VARNUM_MAX	    LONG_MAX
1138 #define UVARNUM_MAX	    ULONG_MAX
1139 #  else
1140 typedef __int64		    varnumber_T;
1141 typedef unsigned __int64    uvarnumber_T;
1142 #define VARNUM_MIN	    _I64_MIN
1143 #define VARNUM_MAX	    _I64_MAX
1144 #define UVARNUM_MAX	    _UI64_MAX
1145 #  endif
1146 # elif defined(HAVE_STDINT_H)
1147 typedef int64_t		    varnumber_T;
1148 typedef uint64_t	    uvarnumber_T;
1149 #define VARNUM_MIN	    INT64_MIN
1150 #define VARNUM_MAX	    INT64_MAX
1151 #define UVARNUM_MAX	    UINT64_MAX
1152 # else
1153 typedef long		    varnumber_T;
1154 typedef unsigned long	    uvarnumber_T;
1155 #define VARNUM_MIN	    LONG_MIN
1156 #define VARNUM_MAX	    LONG_MAX
1157 #define UVARNUM_MAX	    ULONG_MAX
1158 # endif
1159 #else
1160 /* Use 32-bit Number. */
1161 # if VIM_SIZEOF_INT <= 3	/* use long if int is smaller than 32 bits */
1162 typedef long		    varnumber_T;
1163 typedef unsigned long	    uvarnumber_T;
1164 #define VARNUM_MIN	    LONG_MIN
1165 #define VARNUM_MAX	    LONG_MAX
1166 #define UVARNUM_MAX	    ULONG_MAX
1167 # else
1168 typedef int		    varnumber_T;
1169 typedef unsigned int	    uvarnumber_T;
1170 #define VARNUM_MIN	    INT_MIN
1171 #define VARNUM_MAX	    INT_MAX
1172 #define UVARNUM_MAX	    UINT_MAX
1173 # endif
1174 #endif
1175 
1176 typedef double	float_T;
1177 
1178 typedef struct listvar_S list_T;
1179 typedef struct dictvar_S dict_T;
1180 typedef struct partial_S partial_T;
1181 
1182 typedef struct jobvar_S job_T;
1183 typedef struct readq_S readq_T;
1184 typedef struct jsonq_S jsonq_T;
1185 typedef struct cbq_S cbq_T;
1186 typedef struct channel_S channel_T;
1187 
1188 typedef enum
1189 {
1190     VAR_UNKNOWN = 0,
1191     VAR_NUMBER,	 /* "v_number" is used */
1192     VAR_STRING,	 /* "v_string" is used */
1193     VAR_FUNC,	 /* "v_string" is function name */
1194     VAR_PARTIAL, /* "v_partial" is used */
1195     VAR_LIST,	 /* "v_list" is used */
1196     VAR_DICT,	 /* "v_dict" is used */
1197     VAR_FLOAT,	 /* "v_float" is used */
1198     VAR_SPECIAL, /* "v_number" is used */
1199     VAR_JOB,	 /* "v_job" is used */
1200     VAR_CHANNEL	 /* "v_channel" is used */
1201 } vartype_T;
1202 
1203 /*
1204  * Structure to hold an internal variable without a name.
1205  */
1206 typedef struct
1207 {
1208     vartype_T	v_type;
1209     char	v_lock;	    /* see below: VAR_LOCKED, VAR_FIXED */
1210     union
1211     {
1212 	varnumber_T	v_number;	/* number value */
1213 #ifdef FEAT_FLOAT
1214 	float_T		v_float;	/* floating number value */
1215 #endif
1216 	char_u		*v_string;	/* string value (can be NULL!) */
1217 	list_T		*v_list;	/* list value (can be NULL!) */
1218 	dict_T		*v_dict;	/* dict value (can be NULL!) */
1219 	partial_T	*v_partial;	/* closure: function with args */
1220 #ifdef FEAT_JOB_CHANNEL
1221 	job_T		*v_job;		/* job value (can be NULL!) */
1222 	channel_T	*v_channel;	/* channel value (can be NULL!) */
1223 #endif
1224     }		vval;
1225 } typval_T;
1226 
1227 /* Values for "dv_scope". */
1228 #define VAR_SCOPE     1	/* a:, v:, s:, etc. scope dictionaries */
1229 #define VAR_DEF_SCOPE 2	/* l:, g: scope dictionaries: here funcrefs are not
1230 			   allowed to mask existing functions */
1231 
1232 /* Values for "v_lock". */
1233 #define VAR_LOCKED  1	/* locked with lock(), can use unlock() */
1234 #define VAR_FIXED   2	/* locked forever */
1235 
1236 /*
1237  * Structure to hold an item of a list: an internal variable without a name.
1238  */
1239 typedef struct listitem_S listitem_T;
1240 
1241 struct listitem_S
1242 {
1243     listitem_T	*li_next;	/* next item in list */
1244     listitem_T	*li_prev;	/* previous item in list */
1245     typval_T	li_tv;		/* type and value of the variable */
1246 };
1247 
1248 /*
1249  * Struct used by those that are using an item in a list.
1250  */
1251 typedef struct listwatch_S listwatch_T;
1252 
1253 struct listwatch_S
1254 {
1255     listitem_T		*lw_item;	/* item being watched */
1256     listwatch_T		*lw_next;	/* next watcher */
1257 };
1258 
1259 /*
1260  * Structure to hold info about a list.
1261  */
1262 struct listvar_S
1263 {
1264     listitem_T	*lv_first;	/* first item, NULL if none */
1265     listitem_T	*lv_last;	/* last item, NULL if none */
1266     int		lv_refcount;	/* reference count */
1267     int		lv_len;		/* number of items */
1268     listwatch_T	*lv_watch;	/* first watcher, NULL if none */
1269     int		lv_idx;		/* cached index of an item */
1270     listitem_T	*lv_idx_item;	/* when not NULL item at index "lv_idx" */
1271     int		lv_copyID;	/* ID used by deepcopy() */
1272     list_T	*lv_copylist;	/* copied list used by deepcopy() */
1273     char	lv_lock;	/* zero, VAR_LOCKED, VAR_FIXED */
1274     list_T	*lv_used_next;	/* next list in used lists list */
1275     list_T	*lv_used_prev;	/* previous list in used lists list */
1276 };
1277 
1278 /*
1279  * Static list with 10 items.  Use init_static_list() to initialize.
1280  */
1281 typedef struct {
1282     list_T	sl_list;	/* must be first */
1283     listitem_T	sl_items[10];
1284 } staticList10_T;
1285 
1286 /*
1287  * Structure to hold an item of a Dictionary.
1288  * Also used for a variable.
1289  * The key is copied into "di_key" to avoid an extra alloc/free for it.
1290  */
1291 struct dictitem_S
1292 {
1293     typval_T	di_tv;		/* type and value of the variable */
1294     char_u	di_flags;	/* flags (only used for variable) */
1295     char_u	di_key[1];	/* key (actually longer!) */
1296 };
1297 typedef struct dictitem_S dictitem_T;
1298 
1299 /* A dictitem with a 16 character key (plus NUL). */
1300 struct dictitem16_S
1301 {
1302     typval_T	di_tv;		/* type and value of the variable */
1303     char_u	di_flags;	/* flags (only used for variable) */
1304     char_u	di_key[17];	/* key */
1305 };
1306 typedef struct dictitem16_S dictitem16_T;
1307 
1308 #define DI_FLAGS_RO	1  /* "di_flags" value: read-only variable */
1309 #define DI_FLAGS_RO_SBX 2  /* "di_flags" value: read-only in the sandbox */
1310 #define DI_FLAGS_FIX	4  /* "di_flags" value: fixed: no :unlet or remove() */
1311 #define DI_FLAGS_LOCK	8  /* "di_flags" value: locked variable */
1312 #define DI_FLAGS_ALLOC	16 /* "di_flags" value: separately allocated */
1313 
1314 /*
1315  * Structure to hold info about a Dictionary.
1316  */
1317 struct dictvar_S
1318 {
1319     char	dv_lock;	/* zero, VAR_LOCKED, VAR_FIXED */
1320     char	dv_scope;	/* zero, VAR_SCOPE, VAR_DEF_SCOPE */
1321     int		dv_refcount;	/* reference count */
1322     int		dv_copyID;	/* ID used by deepcopy() */
1323     hashtab_T	dv_hashtab;	/* hashtab that refers to the items */
1324     dict_T	*dv_copydict;	/* copied dict used by deepcopy() */
1325     dict_T	*dv_used_next;	/* next dict in used dicts list */
1326     dict_T	*dv_used_prev;	/* previous dict in used dicts list */
1327 };
1328 
1329 #if defined(FEAT_EVAL) || defined(PROTO)
1330 typedef struct funccall_S funccall_T;
1331 
1332 /*
1333  * Structure to hold info for a user function.
1334  */
1335 typedef struct
1336 {
1337     int		uf_varargs;	/* variable nr of arguments */
1338     int		uf_flags;
1339     int		uf_calls;	/* nr of active calls */
1340     int		uf_cleared;	/* func_clear() was already called */
1341     garray_T	uf_args;	/* arguments */
1342     garray_T	uf_lines;	/* function lines */
1343 #ifdef FEAT_PROFILE
1344     int		uf_profiling;	/* TRUE when func is being profiled */
1345     /* profiling the function as a whole */
1346     int		uf_tm_count;	/* nr of calls */
1347     proftime_T	uf_tm_total;	/* time spent in function + children */
1348     proftime_T	uf_tm_self;	/* time spent in function itself */
1349     proftime_T	uf_tm_children;	/* time spent in children this call */
1350     /* profiling the function per line */
1351     int		*uf_tml_count;	/* nr of times line was executed */
1352     proftime_T	*uf_tml_total;	/* time spent in a line + children */
1353     proftime_T	*uf_tml_self;	/* time spent in a line itself */
1354     proftime_T	uf_tml_start;	/* start time for current line */
1355     proftime_T	uf_tml_children; /* time spent in children for this line */
1356     proftime_T	uf_tml_wait;	/* start wait time for current line */
1357     int		uf_tml_idx;	/* index of line being timed; -1 if none */
1358     int		uf_tml_execed;	/* line being timed was executed */
1359 #endif
1360     scid_T	uf_script_ID;	/* ID of script where function was defined,
1361 				   used for s: variables */
1362     int		uf_refcount;	/* reference count, see func_name_refcount() */
1363     funccall_T	*uf_scoped;	/* l: local variables for closure */
1364     char_u	uf_name[1];	/* name of function (actually longer); can
1365 				   start with <SNR>123_ (<SNR> is K_SPECIAL
1366 				   KS_EXTRA KE_SNR) */
1367 } ufunc_T;
1368 
1369 #define MAX_FUNC_ARGS	20	/* maximum number of function arguments */
1370 #define VAR_SHORT_LEN	20	/* short variable name length */
1371 #define FIXVAR_CNT	12	/* number of fixed variables */
1372 
1373 /* structure to hold info for a function that is currently being executed. */
1374 struct funccall_S
1375 {
1376     ufunc_T	*func;		/* function being called */
1377     int		linenr;		/* next line to be executed */
1378     int		returned;	/* ":return" used */
1379     struct			/* fixed variables for arguments */
1380     {
1381 	dictitem_T	var;		/* variable (without room for name) */
1382 	char_u	room[VAR_SHORT_LEN];	/* room for the name */
1383     } fixvar[FIXVAR_CNT];
1384     dict_T	l_vars;		/* l: local function variables */
1385     dictitem_T	l_vars_var;	/* variable for l: scope */
1386     dict_T	l_avars;	/* a: argument variables */
1387     dictitem_T	l_avars_var;	/* variable for a: scope */
1388     list_T	l_varlist;	/* list for a:000 */
1389     listitem_T	l_listitems[MAX_FUNC_ARGS];	/* listitems for a:000 */
1390     typval_T	*rettv;		/* return value */
1391     linenr_T	breakpoint;	/* next line with breakpoint or zero */
1392     int		dbg_tick;	/* debug_tick when breakpoint was set */
1393     int		level;		/* top nesting level of executed function */
1394 #ifdef FEAT_PROFILE
1395     proftime_T	prof_child;	/* time spent in a child */
1396 #endif
1397     funccall_T	*caller;	/* calling function or NULL */
1398 
1399     /* for closure */
1400     int		fc_refcount;	/* number of user functions that reference this
1401 				 * funccal */
1402     int		fc_copyID;	/* for garbage collection */
1403     garray_T	fc_funcs;	/* list of ufunc_T* which keep a reference to
1404 				 * "func" */
1405 };
1406 
1407 /*
1408  * Struct used by trans_function_name()
1409  */
1410 typedef struct
1411 {
1412     dict_T	*fd_dict;	/* Dictionary used */
1413     char_u	*fd_newkey;	/* new key in "dict" in allocated memory */
1414     dictitem_T	*fd_di;		/* Dictionary item used */
1415 } funcdict_T;
1416 
1417 #else
1418 /* dummy typedefs for function prototypes */
1419 typedef struct
1420 {
1421     int	    dummy;
1422 } ufunc_T;
1423 typedef struct
1424 {
1425     int	    dummy;
1426 } funcdict_T;
1427 #endif
1428 
1429 struct partial_S
1430 {
1431     int		pt_refcount;	/* reference count */
1432     char_u	*pt_name;	/* function name; when NULL use
1433 				 * pt_func->uf_name */
1434     ufunc_T	*pt_func;	/* function pointer; when NULL lookup function
1435 				 * with pt_name */
1436     int		pt_auto;	/* when TRUE the partial was created for using
1437 				   dict.member in handle_subscript() */
1438     int		pt_argc;	/* number of arguments */
1439     typval_T	*pt_argv;	/* arguments in allocated array */
1440     dict_T	*pt_dict;	/* dict for "self" */
1441 };
1442 
1443 /* Status of a job.  Order matters! */
1444 typedef enum
1445 {
1446     JOB_FAILED,
1447     JOB_STARTED,
1448     JOB_ENDED,	    /* detected job done */
1449     JOB_FINISHED    /* job done and cleanup done */
1450 } jobstatus_T;
1451 
1452 /*
1453  * Structure to hold info about a Job.
1454  */
1455 struct jobvar_S
1456 {
1457     job_T	*jv_next;
1458     job_T	*jv_prev;
1459 #ifdef UNIX
1460     pid_t	jv_pid;
1461 #endif
1462 #ifdef WIN32
1463     PROCESS_INFORMATION	jv_proc_info;
1464     HANDLE		jv_job_object;
1465 #endif
1466     jobstatus_T	jv_status;
1467     char_u	*jv_stoponexit; /* allocated */
1468     int		jv_exitval;
1469     char_u	*jv_exit_cb;	/* allocated */
1470     partial_T	*jv_exit_partial;
1471 
1472     buf_T	*jv_in_buf;	/* buffer from "in-name" */
1473 
1474     int		jv_refcount;	/* reference count */
1475     int		jv_copyID;
1476 
1477     channel_T	*jv_channel;	/* channel for I/O, reference counted */
1478 };
1479 
1480 /*
1481  * Structures to hold info about a Channel.
1482  */
1483 struct readq_S
1484 {
1485     char_u	*rq_buffer;
1486     long_u	rq_buflen;
1487     readq_T	*rq_next;
1488     readq_T	*rq_prev;
1489 };
1490 
1491 struct jsonq_S
1492 {
1493     typval_T	*jq_value;
1494     jsonq_T	*jq_next;
1495     jsonq_T	*jq_prev;
1496     int		jq_no_callback; /* TRUE when no callback was found */
1497 };
1498 
1499 struct cbq_S
1500 {
1501     char_u	*cq_callback;
1502     partial_T	*cq_partial;
1503     int		cq_seq_nr;
1504     cbq_T	*cq_next;
1505     cbq_T	*cq_prev;
1506 };
1507 
1508 /* mode for a channel */
1509 typedef enum
1510 {
1511     MODE_NL = 0,
1512     MODE_RAW,
1513     MODE_JSON,
1514     MODE_JS
1515 } ch_mode_T;
1516 
1517 typedef enum {
1518     JIO_PIPE,	    /* default */
1519     JIO_NULL,
1520     JIO_FILE,
1521     JIO_BUFFER,
1522     JIO_OUT
1523 } job_io_T;
1524 
1525 /* Ordering matters, it is used in for loops: IN is last, only SOCK/OUT/ERR
1526  * are polled. */
1527 typedef enum {
1528     PART_SOCK = 0,
1529 #define CH_SOCK_FD	ch_part[PART_SOCK].ch_fd
1530 #ifdef FEAT_JOB_CHANNEL
1531     PART_OUT,
1532 # define CH_OUT_FD	ch_part[PART_OUT].ch_fd
1533     PART_ERR,
1534 # define CH_ERR_FD	ch_part[PART_ERR].ch_fd
1535     PART_IN,
1536 # define CH_IN_FD	ch_part[PART_IN].ch_fd
1537 #endif
1538     PART_COUNT
1539 } ch_part_T;
1540 
1541 #define INVALID_FD	(-1)
1542 
1543 /* The per-fd info for a channel. */
1544 typedef struct {
1545     sock_T	ch_fd;	    /* socket/stdin/stdout/stderr, -1 if not used */
1546 
1547 # if defined(UNIX) && !defined(HAVE_SELECT)
1548     int		ch_poll_idx;	/* used by channel_poll_setup() */
1549 # endif
1550 
1551 #ifdef FEAT_GUI_X11
1552     XtInputId	ch_inputHandler; /* Cookie for input */
1553 #endif
1554 #ifdef FEAT_GUI_GTK
1555     gint	ch_inputHandler; /* Cookie for input */
1556 #endif
1557 
1558     ch_mode_T	ch_mode;
1559     job_io_T	ch_io;
1560     int		ch_timeout;	/* request timeout in msec */
1561 
1562     readq_T	ch_head;	/* header for circular raw read queue */
1563     jsonq_T	ch_json_head;	/* header for circular json read queue */
1564     int		ch_block_id;	/* ID that channel_read_json_block() is
1565 				   waiting for */
1566     /* When ch_wait_len is non-zero use ch_deadline to wait for incomplete
1567      * message to be complete. The value is the length of the incomplete
1568      * message when the deadline was set.  If it gets longer (something was
1569      * received) the deadline is reset. */
1570     size_t	ch_wait_len;
1571 #ifdef WIN32
1572     DWORD	ch_deadline;
1573 #else
1574     struct timeval ch_deadline;
1575 #endif
1576     int		ch_block_write;	/* for testing: 0 when not used, -1 when write
1577 				 * does not block, 1 simulate blocking */
1578 
1579     cbq_T	ch_cb_head;	/* dummy node for per-request callbacks */
1580     char_u	*ch_callback;	/* call when a msg is not handled */
1581     partial_T	*ch_partial;
1582 
1583     bufref_T	ch_bufref;	/* buffer to read from or write to */
1584     int		ch_nomodifiable; /* TRUE when buffer can be 'nomodifiable' */
1585     int		ch_nomod_error;	/* TRUE when e_modifiable was given */
1586     int		ch_buf_append;	/* write appended lines instead top-bot */
1587     linenr_T	ch_buf_top;	/* next line to send */
1588     linenr_T	ch_buf_bot;	/* last line to send */
1589 } chanpart_T;
1590 
1591 struct channel_S {
1592     channel_T	*ch_next;
1593     channel_T	*ch_prev;
1594 
1595     int		ch_id;		/* ID of the channel */
1596     int		ch_last_msg_id;	/* ID of the last message */
1597 
1598     chanpart_T	ch_part[PART_COUNT]; /* info for socket, out, err and in */
1599 
1600     char	*ch_hostname;	/* only for socket, allocated */
1601     int		ch_port;	/* only for socket */
1602 
1603     int		ch_to_be_closed; /* bitset of readable fds to be closed.
1604 				  * When all readable fds have been closed,
1605 				  * set to (1 << PART_COUNT). */
1606     int		ch_to_be_freed; /* When TRUE channel must be freed when it's
1607 				 * safe to invoke callbacks. */
1608     int		ch_error;	/* When TRUE an error was reported.  Avoids
1609 				 * giving pages full of error messages when
1610 				 * the other side has exited, only mention the
1611 				 * first error until the connection works
1612 				 * again. */
1613 
1614     void	(*ch_nb_close_cb)(void);
1615 				/* callback for Netbeans when channel is
1616 				 * closed */
1617 
1618     char_u	*ch_callback;	/* call when any msg is not handled */
1619     partial_T	*ch_partial;
1620     char_u	*ch_close_cb;	/* call when channel is closed */
1621     partial_T	*ch_close_partial;
1622     int		ch_drop_never;
1623 
1624     job_T	*ch_job;	/* Job that uses this channel; this does not
1625 				 * count as a reference to avoid a circular
1626 				 * reference, the job refers to the channel. */
1627     int		ch_job_killed;	/* TRUE when there was a job and it was killed
1628 				 * or we know it died. */
1629 
1630     int		ch_refcount;	/* reference count */
1631     int		ch_copyID;
1632 };
1633 
1634 #define JO_MODE		    0x0001	/* channel mode */
1635 #define JO_IN_MODE	    0x0002	/* stdin mode */
1636 #define JO_OUT_MODE	    0x0004	/* stdout mode */
1637 #define JO_ERR_MODE	    0x0008	/* stderr mode */
1638 #define JO_CALLBACK	    0x0010	/* channel callback */
1639 #define JO_OUT_CALLBACK	    0x0020	/* stdout callback */
1640 #define JO_ERR_CALLBACK	    0x0040	/* stderr callback */
1641 #define JO_CLOSE_CALLBACK   0x0080	/* close callback */
1642 #define JO_WAITTIME	    0x0100	/* only for ch_open() */
1643 #define JO_TIMEOUT	    0x0200	/* all timeouts */
1644 #define JO_OUT_TIMEOUT	    0x0400	/* stdout timeouts */
1645 #define JO_ERR_TIMEOUT	    0x0800	/* stderr timeouts */
1646 #define JO_PART		    0x1000	/* "part" */
1647 #define JO_ID		    0x2000	/* "id" */
1648 #define JO_STOPONEXIT	    0x4000	/* "stoponexit" */
1649 #define JO_EXIT_CB	    0x8000	/* "exit_cb" */
1650 #define JO_OUT_IO	    0x10000	/* "out_io" */
1651 #define JO_ERR_IO	    0x20000	/* "err_io" (JO_OUT_IO << 1) */
1652 #define JO_IN_IO	    0x40000	/* "in_io" (JO_OUT_IO << 2) */
1653 #define JO_OUT_NAME	    0x80000	/* "out_name" */
1654 #define JO_ERR_NAME	    0x100000	/* "err_name" (JO_OUT_NAME << 1) */
1655 #define JO_IN_NAME	    0x200000	/* "in_name" (JO_OUT_NAME << 2) */
1656 #define JO_IN_TOP	    0x400000	/* "in_top" */
1657 #define JO_IN_BOT	    0x800000	/* "in_bot" */
1658 #define JO_OUT_BUF	    0x1000000	/* "out_buf" */
1659 #define JO_ERR_BUF	    0x2000000	/* "err_buf" (JO_OUT_BUF << 1) */
1660 #define JO_IN_BUF	    0x4000000	/* "in_buf" (JO_OUT_BUF << 2) */
1661 #define JO_CHANNEL	    0x8000000	/* "channel" */
1662 #define JO_BLOCK_WRITE	    0x10000000	/* "block_write" */
1663 #define JO_OUT_MODIFIABLE   0x20000000	/* "out_modifiable" */
1664 #define JO_ERR_MODIFIABLE   0x40000000	/* "err_modifiable" (JO_OUT_ << 1) */
1665 #define JO_ALL		    0x7fffffff
1666 
1667 #define JO2_OUT_MSG	    0x0001	/* "out_msg" */
1668 #define JO2_ERR_MSG	    0x0002	/* "err_msg" (JO_OUT_ << 1) */
1669 #define JO2_ALL		    0x0003
1670 
1671 #define JO_MODE_ALL	(JO_MODE + JO_IN_MODE + JO_OUT_MODE + JO_ERR_MODE)
1672 #define JO_CB_ALL \
1673     (JO_CALLBACK + JO_OUT_CALLBACK + JO_ERR_CALLBACK + JO_CLOSE_CALLBACK)
1674 #define JO_TIMEOUT_ALL	(JO_TIMEOUT + JO_OUT_TIMEOUT + JO_ERR_TIMEOUT)
1675 
1676 /*
1677  * Options for job and channel commands.
1678  */
1679 typedef struct
1680 {
1681     int		jo_set;		/* JO_ bits for values that were set */
1682     int		jo_set2;	/* JO2_ bits for values that were set */
1683 
1684     ch_mode_T	jo_mode;
1685     ch_mode_T	jo_in_mode;
1686     ch_mode_T	jo_out_mode;
1687     ch_mode_T	jo_err_mode;
1688 
1689     job_io_T	jo_io[4];	/* PART_OUT, PART_ERR, PART_IN */
1690     char_u	jo_io_name_buf[4][NUMBUFLEN];
1691     char_u	*jo_io_name[4];	/* not allocated! */
1692     int		jo_io_buf[4];
1693     int		jo_modifiable[4];
1694     int		jo_message[4];
1695     channel_T	*jo_channel;
1696 
1697     linenr_T	jo_in_top;
1698     linenr_T	jo_in_bot;
1699 
1700     char_u	*jo_callback;	/* not allocated! */
1701     partial_T	*jo_partial;	/* not referenced! */
1702     char_u	*jo_out_cb;	/* not allocated! */
1703     partial_T	*jo_out_partial; /* not referenced! */
1704     char_u	*jo_err_cb;	/* not allocated! */
1705     partial_T	*jo_err_partial; /* not referenced! */
1706     char_u	*jo_close_cb;	/* not allocated! */
1707     partial_T	*jo_close_partial; /* not referenced! */
1708     char_u	*jo_exit_cb;	/* not allocated! */
1709     partial_T	*jo_exit_partial; /* not referenced! */
1710     int		jo_drop_never;
1711     int		jo_waittime;
1712     int		jo_timeout;
1713     int		jo_out_timeout;
1714     int		jo_err_timeout;
1715     int		jo_block_write;	/* for testing only */
1716     int		jo_part;
1717     int		jo_id;
1718     char_u	jo_soe_buf[NUMBUFLEN];
1719     char_u	*jo_stoponexit;
1720 } jobopt_T;
1721 
1722 
1723 /* structure used for explicit stack while garbage collecting hash tables */
1724 typedef struct ht_stack_S
1725 {
1726     hashtab_T		*ht;
1727     struct ht_stack_S	*prev;
1728 } ht_stack_T;
1729 
1730 /* structure used for explicit stack while garbage collecting lists */
1731 typedef struct list_stack_S
1732 {
1733     list_T		*list;
1734     struct list_stack_S	*prev;
1735 } list_stack_T;
1736 
1737 /* values for b_syn_spell: what to do with toplevel text */
1738 #define SYNSPL_DEFAULT	0	/* spell check if @Spell not defined */
1739 #define SYNSPL_TOP	1	/* spell check toplevel text */
1740 #define SYNSPL_NOTOP	2	/* don't spell check toplevel text */
1741 
1742 /* avoid #ifdefs for when b_spell is not available */
1743 #ifdef FEAT_SPELL
1744 # define B_SPELL(buf)  ((buf)->b_spell)
1745 #else
1746 # define B_SPELL(buf)  (0)
1747 #endif
1748 
1749 #ifdef FEAT_QUICKFIX
1750 typedef struct qf_info_S qf_info_T;
1751 #endif
1752 
1753 #ifdef FEAT_PROFILE
1754 /*
1755  * Used for :syntime: timing of executing a syntax pattern.
1756  */
1757 typedef struct {
1758     proftime_T	total;		/* total time used */
1759     proftime_T	slowest;	/* time of slowest call */
1760     long	count;		/* nr of times used */
1761     long	match;		/* nr of times matched */
1762 } syn_time_T;
1763 #endif
1764 
1765 #ifdef FEAT_CRYPT
1766 /*
1767  * Structure to hold the type of encryption and the state of encryption or
1768  * decryption.
1769  */
1770 typedef struct {
1771     int	    method_nr;
1772     void    *method_state;  /* method-specific state information */
1773 } cryptstate_T;
1774 
1775 /* values for method_nr */
1776 # define CRYPT_M_ZIP	0
1777 # define CRYPT_M_BF	1
1778 # define CRYPT_M_BF2	2
1779 # define CRYPT_M_COUNT	3 /* number of crypt methods */
1780 #endif
1781 
1782 
1783 /*
1784  * These are items normally related to a buffer.  But when using ":ownsyntax"
1785  * a window may have its own instance.
1786  */
1787 typedef struct {
1788 #ifdef FEAT_SYN_HL
1789     hashtab_T	b_keywtab;		/* syntax keywords hash table */
1790     hashtab_T	b_keywtab_ic;		/* idem, ignore case */
1791     int		b_syn_error;		/* TRUE when error occurred in HL */
1792     int		b_syn_ic;		/* ignore case for :syn cmds */
1793     int		b_syn_spell;		/* SYNSPL_ values */
1794     garray_T	b_syn_patterns;		/* table for syntax patterns */
1795     garray_T	b_syn_clusters;		/* table for syntax clusters */
1796     int		b_spell_cluster_id;	/* @Spell cluster ID or 0 */
1797     int		b_nospell_cluster_id;	/* @NoSpell cluster ID or 0 */
1798     int		b_syn_containedin;	/* TRUE when there is an item with a
1799 					   "containedin" argument */
1800     int		b_syn_sync_flags;	/* flags about how to sync */
1801     short	b_syn_sync_id;		/* group to sync on */
1802     long	b_syn_sync_minlines;	/* minimal sync lines offset */
1803     long	b_syn_sync_maxlines;	/* maximal sync lines offset */
1804     long	b_syn_sync_linebreaks;	/* offset for multi-line pattern */
1805     char_u	*b_syn_linecont_pat;	/* line continuation pattern */
1806     regprog_T	*b_syn_linecont_prog;	/* line continuation program */
1807 #ifdef FEAT_PROFILE
1808     syn_time_T  b_syn_linecont_time;
1809 #endif
1810     int		b_syn_linecont_ic;	/* ignore-case flag for above */
1811     int		b_syn_topgrp;		/* for ":syntax include" */
1812 # ifdef FEAT_CONCEAL
1813     int		b_syn_conceal;		/* auto-conceal for :syn cmds */
1814 # endif
1815 # ifdef FEAT_FOLDING
1816     int		b_syn_folditems;	/* number of patterns with the HL_FOLD
1817 					   flag set */
1818 # endif
1819     /*
1820      * b_sst_array[] contains the state stack for a number of lines, for the
1821      * start of that line (col == 0).  This avoids having to recompute the
1822      * syntax state too often.
1823      * b_sst_array[] is allocated to hold the state for all displayed lines,
1824      * and states for 1 out of about 20 other lines.
1825      * b_sst_array	pointer to an array of synstate_T
1826      * b_sst_len	number of entries in b_sst_array[]
1827      * b_sst_first	pointer to first used entry in b_sst_array[] or NULL
1828      * b_sst_firstfree	pointer to first free entry in b_sst_array[] or NULL
1829      * b_sst_freecount	number of free entries in b_sst_array[]
1830      * b_sst_check_lnum	entries after this lnum need to be checked for
1831      *			validity (MAXLNUM means no check needed)
1832      */
1833     synstate_T	*b_sst_array;
1834     int		b_sst_len;
1835     synstate_T	*b_sst_first;
1836     synstate_T	*b_sst_firstfree;
1837     int		b_sst_freecount;
1838     linenr_T	b_sst_check_lnum;
1839     short_u	b_sst_lasttick;	/* last display tick */
1840 #endif /* FEAT_SYN_HL */
1841 
1842 #ifdef FEAT_SPELL
1843     /* for spell checking */
1844     garray_T	b_langp;	/* list of pointers to slang_T, see spell.c */
1845     char_u	b_spell_ismw[256];/* flags: is midword char */
1846 # ifdef FEAT_MBYTE
1847     char_u	*b_spell_ismw_mb; /* multi-byte midword chars */
1848 # endif
1849     char_u	*b_p_spc;	/* 'spellcapcheck' */
1850     regprog_T	*b_cap_prog;	/* program for 'spellcapcheck' */
1851     char_u	*b_p_spf;	/* 'spellfile' */
1852     char_u	*b_p_spl;	/* 'spelllang' */
1853 # ifdef FEAT_MBYTE
1854     int		b_cjk;		/* all CJK letters as OK */
1855 # endif
1856 #endif
1857 #if !defined(FEAT_SYN_HL) && !defined(FEAT_SPELL)
1858     int		dummy;
1859 #endif
1860     char_u	b_syn_chartab[32];	/* syntax iskeyword option */
1861     char_u	*b_syn_isk;		/* iskeyword option */
1862 } synblock_T;
1863 
1864 
1865 /*
1866  * buffer: structure that holds information about one file
1867  *
1868  * Several windows can share a single Buffer
1869  * A buffer is unallocated if there is no memfile for it.
1870  * A buffer is new if the associated file has never been loaded yet.
1871  */
1872 
1873 struct file_buffer
1874 {
1875     memline_T	b_ml;		/* associated memline (also contains line
1876 				   count) */
1877 
1878     buf_T	*b_next;	/* links in list of buffers */
1879     buf_T	*b_prev;
1880 
1881     int		b_nwindows;	/* nr of windows open on this buffer */
1882 
1883     int		b_flags;	/* various BF_ flags */
1884 #ifdef FEAT_AUTOCMD
1885     int		b_locked;	/* Buffer is being closed or referenced, don't
1886 				   let autocommands wipe it out. */
1887 #endif
1888 
1889     /*
1890      * b_ffname has the full path of the file (NULL for no name).
1891      * b_sfname is the name as the user typed it (or NULL).
1892      * b_fname is the same as b_sfname, unless ":cd" has been done,
1893      *		then it is the same as b_ffname (NULL for no name).
1894      */
1895     char_u	*b_ffname;	/* full path file name */
1896     char_u	*b_sfname;	/* short file name */
1897     char_u	*b_fname;	/* current file name */
1898 
1899 #ifdef UNIX
1900     int		b_dev_valid;	/* TRUE when b_dev has a valid number */
1901     dev_t	b_dev;		/* device number */
1902     ino_t	b_ino;		/* inode number */
1903 #endif
1904 #ifdef FEAT_CW_EDITOR
1905     FSSpec	b_FSSpec;	/* MacOS File Identification */
1906 #endif
1907 #ifdef VMS
1908     char	 b_fab_rfm;	/* Record format    */
1909     char	 b_fab_rat;	/* Record attribute */
1910     unsigned int b_fab_mrs;	/* Max record size  */
1911 #endif
1912     int		b_fnum;		/* buffer number for this file. */
1913     char_u	b_key[VIM_SIZEOF_INT * 2 + 1];
1914 				/* key used for buf_hashtab, holds b_fnum as
1915 				   hex string */
1916 
1917     int		b_changed;	/* 'modified': Set to TRUE if something in the
1918 				   file has been changed and not written out. */
1919     dictitem16_T b_ct_di;	/* holds the b:changedtick value in
1920 				   b_ct_di.di_tv.vval.v_number;
1921 				   incremented for each change, also for undo */
1922 #define CHANGEDTICK(buf) ((buf)->b_ct_di.di_tv.vval.v_number)
1923 
1924     int		b_saving;	/* Set to TRUE if we are in the middle of
1925 				   saving the buffer. */
1926 
1927     /*
1928      * Changes to a buffer require updating of the display.  To minimize the
1929      * work, remember changes made and update everything at once.
1930      */
1931     int		b_mod_set;	/* TRUE when there are changes since the last
1932 				   time the display was updated */
1933     linenr_T	b_mod_top;	/* topmost lnum that was changed */
1934     linenr_T	b_mod_bot;	/* lnum below last changed line, AFTER the
1935 				   change */
1936     long	b_mod_xlines;	/* number of extra buffer lines inserted;
1937 				   negative when lines were deleted */
1938 
1939     wininfo_T	*b_wininfo;	/* list of last used info for each window */
1940 
1941     long	b_mtime;	/* last change time of original file */
1942     long	b_mtime_read;	/* last change time when reading */
1943     off_T	b_orig_size;	/* size of original file in bytes */
1944     int		b_orig_mode;	/* mode of original file */
1945 #ifdef FEAT_VIMINFO
1946     time_T	b_last_used;	/* time when the buffer was last used; used
1947 				 * for viminfo */
1948 #endif
1949 
1950     pos_T	b_namedm[NMARKS]; /* current named marks (mark.c) */
1951 
1952     /* These variables are set when VIsual_active becomes FALSE */
1953     visualinfo_T b_visual;
1954 #ifdef FEAT_EVAL
1955     int		b_visual_mode_eval;  /* b_visual.vi_mode for visualmode() */
1956 #endif
1957 
1958     pos_T	b_last_cursor;	/* cursor position when last unloading this
1959 				   buffer */
1960     pos_T	b_last_insert;	/* where Insert mode was left */
1961     pos_T	b_last_change;	/* position of last change: '. mark */
1962 
1963 #ifdef FEAT_JUMPLIST
1964     /*
1965      * the changelist contains old change positions
1966      */
1967     pos_T	b_changelist[JUMPLISTSIZE];
1968     int		b_changelistlen;	/* number of active entries */
1969     int		b_new_change;		/* set by u_savecommon() */
1970 #endif
1971 
1972     /*
1973      * Character table, only used in charset.c for 'iskeyword'
1974      * 32 bytes of 8 bits: 1 bit per character 0-255.
1975      */
1976     char_u	b_chartab[32];
1977 
1978 #ifdef FEAT_LOCALMAP
1979     /* Table used for mappings local to a buffer. */
1980     mapblock_T	*(b_maphash[256]);
1981 
1982     /* First abbreviation local to a buffer. */
1983     mapblock_T	*b_first_abbr;
1984 #endif
1985 #ifdef FEAT_USR_CMDS
1986     /* User commands local to the buffer. */
1987     garray_T	b_ucmds;
1988 #endif
1989     /*
1990      * start and end of an operator, also used for '[ and ']
1991      */
1992     pos_T	b_op_start;
1993     pos_T	b_op_start_orig;  /* used for Insstart_orig */
1994     pos_T	b_op_end;
1995 
1996 #ifdef FEAT_VIMINFO
1997     int		b_marks_read;	/* Have we read viminfo marks yet? */
1998 #endif
1999 
2000     /*
2001      * The following only used in undo.c.
2002      */
2003     u_header_T	*b_u_oldhead;	/* pointer to oldest header */
2004     u_header_T	*b_u_newhead;	/* pointer to newest header; may not be valid
2005 				   if b_u_curhead is not NULL */
2006     u_header_T	*b_u_curhead;	/* pointer to current header */
2007     int		b_u_numhead;	/* current number of headers */
2008     int		b_u_synced;	/* entry lists are synced */
2009     long	b_u_seq_last;	/* last used undo sequence number */
2010     long	b_u_save_nr_last; /* counter for last file write */
2011     long	b_u_seq_cur;	/* hu_seq of header below which we are now */
2012     time_T	b_u_time_cur;	/* uh_time of header below which we are now */
2013     long	b_u_save_nr_cur; /* file write nr after which we are now */
2014 
2015     /*
2016      * variables for "U" command in undo.c
2017      */
2018     char_u	*b_u_line_ptr;	/* saved line for "U" command */
2019     linenr_T	b_u_line_lnum;	/* line number of line in u_line */
2020     colnr_T	b_u_line_colnr;	/* optional column number */
2021 
2022 #ifdef FEAT_INS_EXPAND
2023     int		b_scanned;	/* ^N/^P have scanned this buffer */
2024 #endif
2025 
2026     /* flags for use of ":lmap" and IM control */
2027     long	b_p_iminsert;	/* input mode for insert */
2028     long	b_p_imsearch;	/* input mode for search */
2029 #define B_IMODE_USE_INSERT -1	/*	Use b_p_iminsert value for search */
2030 #define B_IMODE_NONE 0		/*	Input via none */
2031 #define B_IMODE_LMAP 1		/*	Input via langmap */
2032 #ifndef USE_IM_CONTROL
2033 # define B_IMODE_LAST 1
2034 #else
2035 # define B_IMODE_IM 2		/*	Input via input method */
2036 # define B_IMODE_LAST 2
2037 #endif
2038 
2039 #ifdef FEAT_KEYMAP
2040     short	b_kmap_state;	/* using "lmap" mappings */
2041 # define KEYMAP_INIT	1	/* 'keymap' was set, call keymap_init() */
2042 # define KEYMAP_LOADED	2	/* 'keymap' mappings have been loaded */
2043     garray_T	b_kmap_ga;	/* the keymap table */
2044 #endif
2045 
2046     /*
2047      * Options local to a buffer.
2048      * They are here because their value depends on the type of file
2049      * or contents of the file being edited.
2050      */
2051     int		b_p_initialized;	/* set when options initialized */
2052 
2053 #ifdef FEAT_EVAL
2054     int		b_p_scriptID[BV_COUNT];	/* SIDs for buffer-local options */
2055 #endif
2056 
2057     int		b_p_ai;		/* 'autoindent' */
2058     int		b_p_ai_nopaste;	/* b_p_ai saved for paste mode */
2059     char_u	*b_p_bkc;	/* 'backupcopy' */
2060     unsigned	b_bkc_flags;    /* flags for 'backupcopy' */
2061     int		b_p_ci;		/* 'copyindent' */
2062     int		b_p_bin;	/* 'binary' */
2063 #ifdef FEAT_MBYTE
2064     int		b_p_bomb;	/* 'bomb' */
2065 #endif
2066 #ifdef FEAT_QUICKFIX
2067     char_u	*b_p_bh;	/* 'bufhidden' */
2068     char_u	*b_p_bt;	/* 'buftype' */
2069 #define BUF_HAS_QF_ENTRY 1
2070 #define BUF_HAS_LL_ENTRY 2
2071     int		b_has_qf_entry;
2072 #endif
2073     int		b_p_bl;		/* 'buflisted' */
2074 #ifdef FEAT_CINDENT
2075     int		b_p_cin;	/* 'cindent' */
2076     char_u	*b_p_cino;	/* 'cinoptions' */
2077     char_u	*b_p_cink;	/* 'cinkeys' */
2078 #endif
2079 #if defined(FEAT_CINDENT) || defined(FEAT_SMARTINDENT)
2080     char_u	*b_p_cinw;	/* 'cinwords' */
2081 #endif
2082 #ifdef FEAT_COMMENTS
2083     char_u	*b_p_com;	/* 'comments' */
2084 #endif
2085 #ifdef FEAT_FOLDING
2086     char_u	*b_p_cms;	/* 'commentstring' */
2087 #endif
2088 #ifdef FEAT_INS_EXPAND
2089     char_u	*b_p_cpt;	/* 'complete' */
2090 #endif
2091 #ifdef FEAT_COMPL_FUNC
2092     char_u	*b_p_cfu;	/* 'completefunc' */
2093     char_u	*b_p_ofu;	/* 'omnifunc' */
2094 #endif
2095     int		b_p_eol;	/* 'endofline' */
2096     int		b_p_fixeol;	/* 'fixendofline' */
2097     int		b_p_et;		/* 'expandtab' */
2098     int		b_p_et_nobin;	/* b_p_et saved for binary mode */
2099     int	        b_p_et_nopaste; /* b_p_et saved for paste mode */
2100 #ifdef FEAT_MBYTE
2101     char_u	*b_p_fenc;	/* 'fileencoding' */
2102 #endif
2103     char_u	*b_p_ff;	/* 'fileformat' */
2104 #ifdef FEAT_AUTOCMD
2105     char_u	*b_p_ft;	/* 'filetype' */
2106 #endif
2107     char_u	*b_p_fo;	/* 'formatoptions' */
2108     char_u	*b_p_flp;	/* 'formatlistpat' */
2109     int		b_p_inf;	/* 'infercase' */
2110     char_u	*b_p_isk;	/* 'iskeyword' */
2111 #ifdef FEAT_FIND_ID
2112     char_u	*b_p_def;	/* 'define' local value */
2113     char_u	*b_p_inc;	/* 'include' */
2114 # ifdef FEAT_EVAL
2115     char_u	*b_p_inex;	/* 'includeexpr' */
2116     long_u	b_p_inex_flags;	/* flags for 'includeexpr' */
2117 # endif
2118 #endif
2119 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
2120     char_u	*b_p_inde;	/* 'indentexpr' */
2121     long_u	b_p_inde_flags;	/* flags for 'indentexpr' */
2122     char_u	*b_p_indk;	/* 'indentkeys' */
2123 #endif
2124     char_u	*b_p_fp;	/* 'formatprg' */
2125 #if defined(FEAT_EVAL)
2126     char_u	*b_p_fex;	/* 'formatexpr' */
2127     long_u	b_p_fex_flags;	/* flags for 'formatexpr' */
2128 #endif
2129 #ifdef FEAT_CRYPT
2130     char_u	*b_p_key;	/* 'key' */
2131 #endif
2132     char_u	*b_p_kp;	/* 'keywordprg' */
2133 #ifdef FEAT_LISP
2134     int		b_p_lisp;	/* 'lisp' */
2135 #endif
2136     char_u	*b_p_mps;	/* 'matchpairs' */
2137     int		b_p_ml;		/* 'modeline' */
2138     int		b_p_ml_nobin;	/* b_p_ml saved for binary mode */
2139     int		b_p_ma;		/* 'modifiable' */
2140     char_u	*b_p_nf;	/* 'nrformats' */
2141     int		b_p_pi;		/* 'preserveindent' */
2142 #ifdef FEAT_TEXTOBJ
2143     char_u	*b_p_qe;	/* 'quoteescape' */
2144 #endif
2145     int		b_p_ro;		/* 'readonly' */
2146     long	b_p_sw;		/* 'shiftwidth' */
2147     int		b_p_sn;		/* 'shortname' */
2148 #ifdef FEAT_SMARTINDENT
2149     int		b_p_si;		/* 'smartindent' */
2150 #endif
2151     long	b_p_sts;	/* 'softtabstop' */
2152     long	b_p_sts_nopaste; /* b_p_sts saved for paste mode */
2153 #ifdef FEAT_SEARCHPATH
2154     char_u	*b_p_sua;	/* 'suffixesadd' */
2155 #endif
2156     int		b_p_swf;	/* 'swapfile' */
2157 #ifdef FEAT_SYN_HL
2158     long	b_p_smc;	/* 'synmaxcol' */
2159     char_u	*b_p_syn;	/* 'syntax' */
2160 #endif
2161     long	b_p_ts;		/* 'tabstop' */
2162     int		b_p_tx;		/* 'textmode' */
2163     long	b_p_tw;		/* 'textwidth' */
2164     long	b_p_tw_nobin;	/* b_p_tw saved for binary mode */
2165     long	b_p_tw_nopaste;	/* b_p_tw saved for paste mode */
2166     long	b_p_wm;		/* 'wrapmargin' */
2167     long	b_p_wm_nobin;	/* b_p_wm saved for binary mode */
2168     long	b_p_wm_nopaste;	/* b_p_wm saved for paste mode */
2169 #ifdef FEAT_KEYMAP
2170     char_u	*b_p_keymap;	/* 'keymap' */
2171 #endif
2172 
2173     /* local values for options which are normally global */
2174 #ifdef FEAT_QUICKFIX
2175     char_u	*b_p_gp;	/* 'grepprg' local value */
2176     char_u	*b_p_mp;	/* 'makeprg' local value */
2177     char_u	*b_p_efm;	/* 'errorformat' local value */
2178 #endif
2179     char_u	*b_p_ep;	/* 'equalprg' local value */
2180     char_u	*b_p_path;	/* 'path' local value */
2181     int		b_p_ar;		/* 'autoread' local value */
2182     char_u	*b_p_tags;	/* 'tags' local value */
2183     char_u	*b_p_tc;	/* 'tagcase' local value */
2184     unsigned	b_tc_flags;     /* flags for 'tagcase' */
2185 #ifdef FEAT_INS_EXPAND
2186     char_u	*b_p_dict;	/* 'dictionary' local value */
2187     char_u	*b_p_tsr;	/* 'thesaurus' local value */
2188 #endif
2189     long	b_p_ul;		/* 'undolevels' local value */
2190 #ifdef FEAT_PERSISTENT_UNDO
2191     int		b_p_udf;	/* 'undofile' */
2192 #endif
2193 #ifdef FEAT_LISP
2194     char_u	*b_p_lw;	/* 'lispwords' local value */
2195 #endif
2196 
2197     /* end of buffer options */
2198 
2199 #ifdef FEAT_CINDENT
2200     /* values set from b_p_cino */
2201     int		b_ind_level;
2202     int		b_ind_open_imag;
2203     int		b_ind_no_brace;
2204     int		b_ind_first_open;
2205     int		b_ind_open_extra;
2206     int		b_ind_close_extra;
2207     int		b_ind_open_left_imag;
2208     int		b_ind_jump_label;
2209     int		b_ind_case;
2210     int		b_ind_case_code;
2211     int		b_ind_case_break;
2212     int		b_ind_param;
2213     int		b_ind_func_type;
2214     int		b_ind_comment;
2215     int		b_ind_in_comment;
2216     int		b_ind_in_comment2;
2217     int		b_ind_cpp_baseclass;
2218     int		b_ind_continuation;
2219     int		b_ind_unclosed;
2220     int		b_ind_unclosed2;
2221     int		b_ind_unclosed_noignore;
2222     int		b_ind_unclosed_wrapped;
2223     int		b_ind_unclosed_whiteok;
2224     int		b_ind_matching_paren;
2225     int		b_ind_paren_prev;
2226     int		b_ind_maxparen;
2227     int		b_ind_maxcomment;
2228     int		b_ind_scopedecl;
2229     int		b_ind_scopedecl_code;
2230     int		b_ind_java;
2231     int		b_ind_js;
2232     int		b_ind_keep_case_label;
2233     int		b_ind_hash_comment;
2234     int		b_ind_cpp_namespace;
2235     int		b_ind_if_for_while;
2236 #endif
2237 
2238     linenr_T	b_no_eol_lnum;	/* non-zero lnum when last line of next binary
2239 				 * write should not have an end-of-line */
2240 
2241     int		b_start_eol;	/* last line had eol when it was read */
2242     int		b_start_ffc;	/* first char of 'ff' when edit started */
2243 #ifdef FEAT_MBYTE
2244     char_u	*b_start_fenc;	/* 'fileencoding' when edit started or NULL */
2245     int		b_bad_char;	/* "++bad=" argument when edit started or 0 */
2246     int		b_start_bomb;	/* 'bomb' when it was read */
2247 #endif
2248 
2249 #ifdef FEAT_EVAL
2250     dictitem_T	b_bufvar;	/* variable for "b:" Dictionary */
2251     dict_T	*b_vars;	/* internal variables, local to buffer */
2252 #endif
2253 
2254 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
2255     char_u	*b_p_bexpr;	/* 'balloonexpr' local value */
2256     long_u	b_p_bexpr_flags;/* flags for 'balloonexpr' */
2257 #endif
2258 #ifdef FEAT_CRYPT
2259     char_u	*b_p_cm;	/* 'cryptmethod' */
2260 #endif
2261 
2262     /* When a buffer is created, it starts without a swap file.  b_may_swap is
2263      * then set to indicate that a swap file may be opened later.  It is reset
2264      * if a swap file could not be opened.
2265      */
2266     int		b_may_swap;
2267     int		b_did_warn;	/* Set to 1 if user has been warned on first
2268 				   change of a read-only file */
2269 
2270     /* Two special kinds of buffers:
2271      * help buffer  - used for help files, won't use a swap file.
2272      * spell buffer - used for spell info, never displayed and doesn't have a
2273      *		      file name.
2274      */
2275     int		b_help;		/* TRUE for help file buffer (when set b_p_bt
2276 				   is "help") */
2277 #ifdef FEAT_SPELL
2278     int		b_spell;	/* TRUE for a spell file buffer, most fields
2279 				   are not used!  Use the B_SPELL macro to
2280 				   access b_spell without #ifdef. */
2281 #endif
2282 
2283     int		b_shortname;	/* this file has an 8.3 file name */
2284 
2285 #ifdef FEAT_MZSCHEME
2286     void	*b_mzscheme_ref; /* The MzScheme reference to this buffer */
2287 #endif
2288 
2289 #ifdef FEAT_PERL
2290     void	*b_perl_private;
2291 #endif
2292 
2293 #ifdef FEAT_PYTHON
2294     void	*b_python_ref;	/* The Python reference to this buffer */
2295 #endif
2296 
2297 #ifdef FEAT_PYTHON3
2298     void	*b_python3_ref;	/* The Python3 reference to this buffer */
2299 #endif
2300 
2301 #ifdef FEAT_TCL
2302     void	*b_tcl_ref;
2303 #endif
2304 
2305 #ifdef FEAT_RUBY
2306     void	*b_ruby_ref;
2307 #endif
2308 
2309 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL)
2310     synblock_T	b_s;		/* Info related to syntax highlighting.  w_s
2311 				 * normally points to this, but some windows
2312 				 * may use a different synblock_T. */
2313 #endif
2314 
2315 #ifdef FEAT_SIGNS
2316     signlist_T	*b_signlist;	/* list of signs to draw */
2317 # ifdef FEAT_NETBEANS_INTG
2318     int		b_has_sign_column; /* Flag that is set when a first sign is
2319 				    * added and remains set until the end of
2320 				    * the netbeans session. */
2321 # endif
2322 #endif
2323 
2324 #ifdef FEAT_NETBEANS_INTG
2325     int		b_netbeans_file;    /* TRUE when buffer is owned by NetBeans */
2326     int		b_was_netbeans_file;/* TRUE if b_netbeans_file was once set */
2327 #endif
2328 #ifdef FEAT_JOB_CHANNEL
2329     int		b_write_to_channel; /* TRUE when appended lines are written to
2330 				     * a channel. */
2331 #endif
2332 
2333 #ifdef FEAT_CRYPT
2334     cryptstate_T *b_cryptstate;	/* Encryption state while reading or writing
2335 				 * the file. NULL when not using encryption. */
2336 #endif
2337     int		b_mapped_ctrl_c; /* modes where CTRL-C is mapped */
2338 
2339 }; /* file_buffer */
2340 
2341 
2342 #ifdef FEAT_DIFF
2343 /*
2344  * Stuff for diff mode.
2345  */
2346 # define DB_COUNT 8	/* up to eight buffers can be diff'ed */
2347 
2348 /*
2349  * Each diffblock defines where a block of lines starts in each of the buffers
2350  * and how many lines it occupies in that buffer.  When the lines are missing
2351  * in the buffer the df_count[] is zero.  This is all counted in
2352  * buffer lines.
2353  * There is always at least one unchanged line in between the diffs.
2354  * Otherwise it would have been included in the diff above or below it.
2355  * df_lnum[] + df_count[] is the lnum below the change.  When in one buffer
2356  * lines have been inserted, in the other buffer df_lnum[] is the line below
2357  * the insertion and df_count[] is zero.  When appending lines at the end of
2358  * the buffer, df_lnum[] is one beyond the end!
2359  * This is using a linked list, because the number of differences is expected
2360  * to be reasonable small.  The list is sorted on lnum.
2361  */
2362 typedef struct diffblock_S diff_T;
2363 struct diffblock_S
2364 {
2365     diff_T	*df_next;
2366     linenr_T	df_lnum[DB_COUNT];	/* line number in buffer */
2367     linenr_T	df_count[DB_COUNT];	/* nr of inserted/changed lines */
2368 };
2369 #endif
2370 
2371 #define SNAP_HELP_IDX	0
2372 #ifdef FEAT_AUTOCMD
2373 # define SNAP_AUCMD_IDX 1
2374 # define SNAP_COUNT	2
2375 #else
2376 # define SNAP_COUNT	1
2377 #endif
2378 
2379 /*
2380  * Tab pages point to the top frame of each tab page.
2381  * Note: Most values are NOT valid for the current tab page!  Use "curwin",
2382  * "firstwin", etc. for that.  "tp_topframe" is always valid and can be
2383  * compared against "topframe" to find the current tab page.
2384  */
2385 typedef struct tabpage_S tabpage_T;
2386 struct tabpage_S
2387 {
2388     tabpage_T	    *tp_next;	    /* next tabpage or NULL */
2389     frame_T	    *tp_topframe;   /* topframe for the windows */
2390     win_T	    *tp_curwin;	    /* current window in this Tab page */
2391     win_T	    *tp_prevwin;    /* previous window in this Tab page */
2392     win_T	    *tp_firstwin;   /* first window in this Tab page */
2393     win_T	    *tp_lastwin;    /* last window in this Tab page */
2394     long	    tp_old_Rows;    /* Rows when Tab page was left */
2395     long	    tp_old_Columns; /* Columns when Tab page was left */
2396     long	    tp_ch_used;	    /* value of 'cmdheight' when frame size
2397 				       was set */
2398 #ifdef FEAT_GUI
2399     int		    tp_prev_which_scrollbars[3];
2400 				    /* previous value of which_scrollbars */
2401 #endif
2402 #ifdef FEAT_DIFF
2403     diff_T	    *tp_first_diff;
2404     buf_T	    *(tp_diffbuf[DB_COUNT]);
2405     int		    tp_diff_invalid;	/* list of diffs is outdated */
2406 #endif
2407     frame_T	    *(tp_snapshot[SNAP_COUNT]);  /* window layout snapshots */
2408 #ifdef FEAT_EVAL
2409     dictitem_T	    tp_winvar;	    /* variable for "t:" Dictionary */
2410     dict_T	    *tp_vars;	    /* internal variables, local to tab page */
2411 #endif
2412 
2413 #ifdef FEAT_PYTHON
2414     void	    *tp_python_ref;	/* The Python value for this tab page */
2415 #endif
2416 
2417 #ifdef FEAT_PYTHON3
2418     void	    *tp_python3_ref;	/* The Python value for this tab page */
2419 #endif
2420 };
2421 
2422 /*
2423  * Structure to cache info for displayed lines in w_lines[].
2424  * Each logical line has one entry.
2425  * The entry tells how the logical line is currently displayed in the window.
2426  * This is updated when displaying the window.
2427  * When the display is changed (e.g., when clearing the screen) w_lines_valid
2428  * is changed to exclude invalid entries.
2429  * When making changes to the buffer, wl_valid is reset to indicate wl_size
2430  * may not reflect what is actually in the buffer.  When wl_valid is FALSE,
2431  * the entries can only be used to count the number of displayed lines used.
2432  * wl_lnum and wl_lastlnum are invalid too.
2433  */
2434 typedef struct w_line
2435 {
2436     linenr_T	wl_lnum;	/* buffer line number for logical line */
2437     short_u	wl_size;	/* height in screen lines */
2438     char	wl_valid;	/* TRUE values are valid for text in buffer */
2439 #ifdef FEAT_FOLDING
2440     char	wl_folded;	/* TRUE when this is a range of folded lines */
2441     linenr_T	wl_lastlnum;	/* last buffer line number for logical line */
2442 #endif
2443 } wline_T;
2444 
2445 /*
2446  * Windows are kept in a tree of frames.  Each frame has a column (FR_COL)
2447  * or row (FR_ROW) layout or is a leaf, which has a window.
2448  */
2449 struct frame_S
2450 {
2451     char	fr_layout;	/* FR_LEAF, FR_COL or FR_ROW */
2452 #ifdef FEAT_WINDOWS
2453     int		fr_width;
2454     int		fr_newwidth;	/* new width used in win_equal_rec() */
2455 #endif
2456     int		fr_height;
2457     int		fr_newheight;	/* new height used in win_equal_rec() */
2458     frame_T	*fr_parent;	/* containing frame or NULL */
2459     frame_T	*fr_next;	/* frame right or below in same parent, NULL
2460 				   for first */
2461     frame_T	*fr_prev;	/* frame left or above in same parent, NULL
2462 				   for last */
2463     /* fr_child and fr_win are mutually exclusive */
2464     frame_T	*fr_child;	/* first contained frame */
2465     win_T	*fr_win;	/* window that fills this frame */
2466 };
2467 
2468 #define FR_LEAF	0	/* frame is a leaf */
2469 #define FR_ROW	1	/* frame with a row of windows */
2470 #define FR_COL	2	/* frame with a column of windows */
2471 
2472 /*
2473  * Struct used for highlighting 'hlsearch' matches, matches defined by
2474  * ":match" and matches defined by match functions.
2475  * For 'hlsearch' there is one pattern for all windows.  For ":match" and the
2476  * match functions there is a different pattern for each window.
2477  */
2478 typedef struct
2479 {
2480     regmmatch_T	rm;	/* points to the regexp program; contains last found
2481 			   match (may continue in next line) */
2482     buf_T	*buf;	/* the buffer to search for a match */
2483     linenr_T	lnum;	/* the line to search for a match */
2484     int		attr;	/* attributes to be used for a match */
2485     int		attr_cur; /* attributes currently active in win_line() */
2486     linenr_T	first_lnum;	/* first lnum to search for multi-line pat */
2487     colnr_T	startcol; /* in win_line() points to char where HL starts */
2488     colnr_T	endcol;	 /* in win_line() points to char where HL ends */
2489     int		is_addpos;	/* position specified directly by
2490 				   matchaddpos(). TRUE/FALSE */
2491 #ifdef FEAT_RELTIME
2492     proftime_T	tm;	/* for a time limit */
2493 #endif
2494 } match_T;
2495 
2496 /* number of positions supported by matchaddpos() */
2497 #define MAXPOSMATCH 8
2498 
2499 /*
2500  * Same as lpos_T, but with additional field len.
2501  */
2502 typedef struct
2503 {
2504     linenr_T	lnum;	/* line number */
2505     colnr_T	col;	/* column number */
2506     int		len;	/* length: 0 - to the end of line */
2507 } llpos_T;
2508 
2509 /*
2510  * posmatch_T provides an array for storing match items for matchaddpos()
2511  * function.
2512  */
2513 typedef struct posmatch posmatch_T;
2514 struct posmatch
2515 {
2516     llpos_T	pos[MAXPOSMATCH];	/* array of positions */
2517     int		cur;			/* internal position counter */
2518     linenr_T	toplnum;		/* top buffer line */
2519     linenr_T	botlnum;		/* bottom buffer line */
2520 };
2521 
2522 /*
2523  * matchitem_T provides a linked list for storing match items for ":match" and
2524  * the match functions.
2525  */
2526 typedef struct matchitem matchitem_T;
2527 struct matchitem
2528 {
2529     matchitem_T	*next;
2530     int		id;	    /* match ID */
2531     int		priority;   /* match priority */
2532     char_u	*pattern;   /* pattern to highlight */
2533     int		hlg_id;	    /* highlight group ID */
2534     regmmatch_T	match;	    /* regexp program for pattern */
2535     posmatch_T	pos;	    /* position matches */
2536     match_T	hl;	    /* struct for doing the actual highlighting */
2537 #ifdef FEAT_CONCEAL
2538     int		conceal_char; /* cchar for Conceal highlighting */
2539 #endif
2540 };
2541 
2542 /*
2543  * Structure which contains all information that belongs to a window
2544  *
2545  * All row numbers are relative to the start of the window, except w_winrow.
2546  */
2547 struct window_S
2548 {
2549     int		w_id;		    /* unique window ID */
2550 
2551     buf_T	*w_buffer;	    /* buffer we are a window into (used
2552 				       often, keep it the first item!) */
2553 
2554 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL)
2555     synblock_T	*w_s;		    /* for :ownsyntax */
2556 #endif
2557 
2558 #ifdef FEAT_WINDOWS
2559     win_T	*w_prev;	    /* link to previous window */
2560     win_T	*w_next;	    /* link to next window */
2561 #endif
2562 #ifdef FEAT_AUTOCMD
2563     int		w_closing;	    /* window is being closed, don't let
2564 				       autocommands close it too. */
2565 #endif
2566 
2567     frame_T	*w_frame;	    /* frame containing this window */
2568 
2569     pos_T	w_cursor;	    /* cursor position in buffer */
2570 
2571     colnr_T	w_curswant;	    /* The column we'd like to be at.  This is
2572 				       used to try to stay in the same column
2573 				       for up/down cursor motions. */
2574 
2575     int		w_set_curswant;	    /* If set, then update w_curswant the next
2576 				       time through cursupdate() to the
2577 				       current virtual column */
2578 
2579     /*
2580      * the next seven are used to update the visual part
2581      */
2582     char	w_old_visual_mode;  /* last known VIsual_mode */
2583     linenr_T	w_old_cursor_lnum;  /* last known end of visual part */
2584     colnr_T	w_old_cursor_fcol;  /* first column for block visual part */
2585     colnr_T	w_old_cursor_lcol;  /* last column for block visual part */
2586     linenr_T	w_old_visual_lnum;  /* last known start of visual part */
2587     colnr_T	w_old_visual_col;   /* last known start of visual part */
2588     colnr_T	w_old_curswant;	    /* last known value of Curswant */
2589 
2590     /*
2591      * "w_topline", "w_leftcol" and "w_skipcol" specify the offsets for
2592      * displaying the buffer.
2593      */
2594     linenr_T	w_topline;	    /* buffer line number of the line at the
2595 				       top of the window */
2596 #ifdef FEAT_AUTOCMD
2597     char	w_topline_was_set;  /* flag set to TRUE when topline is set,
2598 				       e.g. by winrestview() */
2599 #endif
2600 #ifdef FEAT_DIFF
2601     int		w_topfill;	    /* number of filler lines above w_topline */
2602     int		w_old_topfill;	    /* w_topfill at last redraw */
2603     int		w_botfill;	    /* TRUE when filler lines are actually
2604 				       below w_topline (at end of file) */
2605     int		w_old_botfill;	    /* w_botfill at last redraw */
2606 #endif
2607     colnr_T	w_leftcol;	    /* window column number of the left most
2608 				       character in the window; used when
2609 				       'wrap' is off */
2610     colnr_T	w_skipcol;	    /* starting column when a single line
2611 				       doesn't fit in the window */
2612 
2613     /*
2614      * Layout of the window in the screen.
2615      * May need to add "msg_scrolled" to "w_winrow" in rare situations.
2616      */
2617 #ifdef FEAT_WINDOWS
2618     int		w_winrow;	    /* first row of window in screen */
2619 #endif
2620     int		w_height;	    /* number of rows in window, excluding
2621 				       status/command line(s) */
2622 #ifdef FEAT_WINDOWS
2623     int		w_status_height;    /* number of status lines (0 or 1) */
2624     int		w_wincol;	    /* Leftmost column of window in screen.
2625 				       use W_WINCOL() */
2626     int		w_width;	    /* Width of window, excluding separation.
2627 				       use W_WIDTH() */
2628     int		w_vsep_width;	    /* Number of separator columns (0 or 1).
2629 				       use W_VSEP_WIDTH() */
2630 #endif
2631 
2632     /*
2633      * === start of cached values ====
2634      */
2635     /*
2636      * Recomputing is minimized by storing the result of computations.
2637      * Use functions in screen.c to check if they are valid and to update.
2638      * w_valid is a bitfield of flags, which indicate if specific values are
2639      * valid or need to be recomputed.	See screen.c for values.
2640      */
2641     int		w_valid;
2642     pos_T	w_valid_cursor;	    /* last known position of w_cursor, used
2643 				       to adjust w_valid */
2644     colnr_T	w_valid_leftcol;    /* last known w_leftcol */
2645 
2646     /*
2647      * w_cline_height is the number of physical lines taken by the buffer line
2648      * that the cursor is on.  We use this to avoid extra calls to plines().
2649      */
2650     int		w_cline_height;	    /* current size of cursor line */
2651 #ifdef FEAT_FOLDING
2652     int		w_cline_folded;	    /* cursor line is folded */
2653 #endif
2654 
2655     int		w_cline_row;	    /* starting row of the cursor line */
2656 
2657     colnr_T	w_virtcol;	    /* column number of the cursor in the
2658 				       buffer line, as opposed to the column
2659 				       number we're at on the screen.  This
2660 				       makes a difference on lines which span
2661 				       more than one screen line or when
2662 				       w_leftcol is non-zero */
2663 
2664     /*
2665      * w_wrow and w_wcol specify the cursor position in the window.
2666      * This is related to positions in the window, not in the display or
2667      * buffer, thus w_wrow is relative to w_winrow.
2668      */
2669     int		w_wrow, w_wcol;	    /* cursor position in window */
2670 
2671     linenr_T	w_botline;	    /* number of the line below the bottom of
2672 				       the window */
2673     int		w_empty_rows;	    /* number of ~ rows in window */
2674 #ifdef FEAT_DIFF
2675     int		w_filler_rows;	    /* number of filler rows at the end of the
2676 				       window */
2677 #endif
2678 
2679     /*
2680      * Info about the lines currently in the window is remembered to avoid
2681      * recomputing it every time.  The allocated size of w_lines[] is Rows.
2682      * Only the w_lines_valid entries are actually valid.
2683      * When the display is up-to-date w_lines[0].wl_lnum is equal to w_topline
2684      * and w_lines[w_lines_valid - 1].wl_lnum is equal to w_botline.
2685      * Between changing text and updating the display w_lines[] represents
2686      * what is currently displayed.  wl_valid is reset to indicated this.
2687      * This is used for efficient redrawing.
2688      */
2689     int		w_lines_valid;	    /* number of valid entries */
2690     wline_T	*w_lines;
2691 
2692 #ifdef FEAT_FOLDING
2693     garray_T	w_folds;	    /* array of nested folds */
2694     char	w_fold_manual;	    /* when TRUE: some folds are opened/closed
2695 				       manually */
2696     char	w_foldinvalid;	    /* when TRUE: folding needs to be
2697 				       recomputed */
2698 #endif
2699 #ifdef FEAT_LINEBREAK
2700     int		w_nrwidth;	    /* width of 'number' and 'relativenumber'
2701 				       column being used */
2702 #endif
2703 
2704     /*
2705      * === end of cached values ===
2706      */
2707 
2708     int		w_redr_type;	    /* type of redraw to be performed on win */
2709     int		w_upd_rows;	    /* number of window lines to update when
2710 				       w_redr_type is REDRAW_TOP */
2711     linenr_T	w_redraw_top;	    /* when != 0: first line needing redraw */
2712     linenr_T	w_redraw_bot;	    /* when != 0: last line needing redraw */
2713 #ifdef FEAT_WINDOWS
2714     int		w_redr_status;	    /* if TRUE status line must be redrawn */
2715 #endif
2716 
2717 #ifdef FEAT_CMDL_INFO
2718     /* remember what is shown in the ruler for this window (if 'ruler' set) */
2719     pos_T	w_ru_cursor;	    /* cursor position shown in ruler */
2720     colnr_T	w_ru_virtcol;	    /* virtcol shown in ruler */
2721     linenr_T	w_ru_topline;	    /* topline shown in ruler */
2722     linenr_T	w_ru_line_count;    /* line count used for ruler */
2723 # ifdef FEAT_DIFF
2724     int		w_ru_topfill;	    /* topfill shown in ruler */
2725 # endif
2726     char	w_ru_empty;	    /* TRUE if ruler shows 0-1 (empty line) */
2727 #endif
2728 
2729     int		w_alt_fnum;	    /* alternate file (for # and CTRL-^) */
2730 
2731 #ifdef FEAT_WINDOWS
2732     alist_T	*w_alist;	    /* pointer to arglist for this window */
2733 #endif
2734     int		w_arg_idx;	    /* current index in argument list (can be
2735 				       out of range!) */
2736     int		w_arg_idx_invalid;  /* editing another file than w_arg_idx */
2737 
2738     char_u	*w_localdir;	    /* absolute path of local directory or
2739 				       NULL */
2740     /*
2741      * Options local to a window.
2742      * They are local because they influence the layout of the window or
2743      * depend on the window layout.
2744      * There are two values: w_onebuf_opt is local to the buffer currently in
2745      * this window, w_allbuf_opt is for all buffers in this window.
2746      */
2747     winopt_T	w_onebuf_opt;
2748     winopt_T	w_allbuf_opt;
2749 
2750     /* A few options have local flags for P_INSECURE. */
2751 #ifdef FEAT_STL_OPT
2752     long_u	w_p_stl_flags;	    /* flags for 'statusline' */
2753 #endif
2754 #ifdef FEAT_EVAL
2755     long_u	w_p_fde_flags;	    /* flags for 'foldexpr' */
2756     long_u	w_p_fdt_flags;	    /* flags for 'foldtext' */
2757 #endif
2758 #ifdef FEAT_SYN_HL
2759     int		*w_p_cc_cols;	    /* array of columns to highlight or NULL */
2760 #endif
2761 #ifdef FEAT_LINEBREAK
2762     int		w_p_brimin;	    /* minimum width for breakindent */
2763     int		w_p_brishift;	    /* additional shift for breakindent */
2764     int		w_p_brisbr;	    /* sbr in 'briopt' */
2765 #endif
2766 
2767     /* transform a pointer to a "onebuf" option into a "allbuf" option */
2768 #define GLOBAL_WO(p)	((char *)p + sizeof(winopt_T))
2769 
2770 #ifdef FEAT_SCROLLBIND
2771     long	w_scbind_pos;
2772 #endif
2773 
2774 #ifdef FEAT_EVAL
2775     dictitem_T	w_winvar;	/* variable for "w:" Dictionary */
2776     dict_T	*w_vars;	/* internal variables, local to window */
2777 #endif
2778 
2779 #if defined(FEAT_RIGHTLEFT) && defined(FEAT_FKMAP)
2780     int		w_farsi;	/* for the window dependent Farsi functions */
2781 #endif
2782 
2783     /*
2784      * The w_prev_pcmark field is used to check whether we really did jump to
2785      * a new line after setting the w_pcmark.  If not, then we revert to
2786      * using the previous w_pcmark.
2787      */
2788     pos_T	w_pcmark;	/* previous context mark */
2789     pos_T	w_prev_pcmark;	/* previous w_pcmark */
2790 
2791 #ifdef FEAT_JUMPLIST
2792     /*
2793      * the jumplist contains old cursor positions
2794      */
2795     xfmark_T	w_jumplist[JUMPLISTSIZE];
2796     int		w_jumplistlen;		/* number of active entries */
2797     int		w_jumplistidx;		/* current position */
2798 
2799     int		w_changelistidx;	/* current position in b_changelist */
2800 #endif
2801 
2802 #ifdef FEAT_SEARCH_EXTRA
2803     matchitem_T	*w_match_head;		/* head of match list */
2804     int		w_next_match_id;	/* next match ID */
2805 #endif
2806 
2807     /*
2808      * the tagstack grows from 0 upwards:
2809      * entry 0: older
2810      * entry 1: newer
2811      * entry 2: newest
2812      */
2813     taggy_T	w_tagstack[TAGSTACKSIZE];	/* the tag stack */
2814     int		w_tagstackidx;		/* idx just below active entry */
2815     int		w_tagstacklen;		/* number of tags on stack */
2816 
2817     /*
2818      * w_fraction is the fractional row of the cursor within the window, from
2819      * 0 at the top row to FRACTION_MULT at the last row.
2820      * w_prev_fraction_row was the actual cursor row when w_fraction was last
2821      * calculated.
2822      */
2823     int		w_fraction;
2824     int		w_prev_fraction_row;
2825 
2826 #ifdef FEAT_GUI
2827     scrollbar_T	w_scrollbars[2];	/* vert. Scrollbars for this window */
2828 #endif
2829 #ifdef FEAT_LINEBREAK
2830     linenr_T	w_nrwidth_line_count;	/* line count when ml_nrwidth_width
2831 					 * was computed. */
2832     long	w_nuw_cached;		/* 'numberwidth' option cached */
2833     int		w_nrwidth_width;	/* nr of chars to print line count. */
2834 #endif
2835 
2836 #ifdef FEAT_QUICKFIX
2837     qf_info_T	*w_llist;		/* Location list for this window */
2838     /*
2839      * Location list reference used in the location list window.
2840      * In a non-location list window, w_llist_ref is NULL.
2841      */
2842     qf_info_T	*w_llist_ref;
2843 #endif
2844 
2845 
2846 #ifdef FEAT_MZSCHEME
2847     void	*w_mzscheme_ref;	/* The MzScheme value for this window */
2848 #endif
2849 
2850 #ifdef FEAT_PERL
2851     void	*w_perl_private;
2852 #endif
2853 
2854 #ifdef FEAT_PYTHON
2855     void	*w_python_ref;		/* The Python value for this window */
2856 #endif
2857 
2858 #ifdef FEAT_PYTHON3
2859     void	*w_python3_ref;		/* The Python value for this window */
2860 #endif
2861 
2862 #ifdef FEAT_TCL
2863     void	*w_tcl_ref;
2864 #endif
2865 
2866 #ifdef FEAT_RUBY
2867     void	*w_ruby_ref;
2868 #endif
2869 };
2870 
2871 /*
2872  * Arguments for operators.
2873  */
2874 typedef struct oparg_S
2875 {
2876     int		op_type;	/* current pending operator type */
2877     int		regname;	/* register to use for the operator */
2878     int		motion_type;	/* type of the current cursor motion */
2879     int		motion_force;	/* force motion type: 'v', 'V' or CTRL-V */
2880     int		use_reg_one;	/* TRUE if delete uses reg 1 even when not
2881 				   linewise */
2882     int		inclusive;	/* TRUE if char motion is inclusive (only
2883 				   valid when motion_type is MCHAR */
2884     int		end_adjusted;	/* backuped b_op_end one char (only used by
2885 				   do_format()) */
2886     pos_T	start;		/* start of the operator */
2887     pos_T	end;		/* end of the operator */
2888     pos_T	cursor_start;	/* cursor position before motion for "gw" */
2889 
2890     long	line_count;	/* number of lines from op_start to op_end
2891 				   (inclusive) */
2892     int		empty;		/* op_start and op_end the same (only used by
2893 				   do_change()) */
2894     int		is_VIsual;	/* operator on Visual area */
2895     int		block_mode;	/* current operator is Visual block mode */
2896     colnr_T	start_vcol;	/* start col for block mode operator */
2897     colnr_T	end_vcol;	/* end col for block mode operator */
2898 #ifdef FEAT_AUTOCMD
2899     long	prev_opcount;	/* ca.opcount saved for K_CURSORHOLD */
2900     long	prev_count0;	/* ca.count0 saved for K_CURSORHOLD */
2901 #endif
2902 } oparg_T;
2903 
2904 /*
2905  * Arguments for Normal mode commands.
2906  */
2907 typedef struct cmdarg_S
2908 {
2909     oparg_T	*oap;		/* Operator arguments */
2910     int		prechar;	/* prefix character (optional, always 'g') */
2911     int		cmdchar;	/* command character */
2912     int		nchar;		/* next command character (optional) */
2913 #ifdef FEAT_MBYTE
2914     int		ncharC1;	/* first composing character (optional) */
2915     int		ncharC2;	/* second composing character (optional) */
2916 #endif
2917     int		extra_char;	/* yet another character (optional) */
2918     long	opcount;	/* count before an operator */
2919     long	count0;		/* count before command, default 0 */
2920     long	count1;		/* count before command, default 1 */
2921     int		arg;		/* extra argument from nv_cmds[] */
2922     int		retval;		/* return: CA_* values */
2923     char_u	*searchbuf;	/* return: pointer to search pattern or NULL */
2924 } cmdarg_T;
2925 
2926 /* values for retval: */
2927 #define CA_COMMAND_BUSY	    1	/* skip restarting edit() once */
2928 #define CA_NO_ADJ_OP_END    2	/* don't adjust operator end */
2929 
2930 #ifdef CURSOR_SHAPE
2931 /*
2932  * struct to store values from 'guicursor' and 'mouseshape'
2933  */
2934 /* Indexes in shape_table[] */
2935 #define SHAPE_IDX_N	0	/* Normal mode */
2936 #define SHAPE_IDX_V	1	/* Visual mode */
2937 #define SHAPE_IDX_I	2	/* Insert mode */
2938 #define SHAPE_IDX_R	3	/* Replace mode */
2939 #define SHAPE_IDX_C	4	/* Command line Normal mode */
2940 #define SHAPE_IDX_CI	5	/* Command line Insert mode */
2941 #define SHAPE_IDX_CR	6	/* Command line Replace mode */
2942 #define SHAPE_IDX_O	7	/* Operator-pending mode */
2943 #define SHAPE_IDX_VE	8	/* Visual mode with 'selection' exclusive */
2944 #define SHAPE_IDX_CLINE	9	/* On command line */
2945 #define SHAPE_IDX_STATUS 10	/* A status line */
2946 #define SHAPE_IDX_SDRAG 11	/* dragging a status line */
2947 #define SHAPE_IDX_VSEP	12	/* A vertical separator line */
2948 #define SHAPE_IDX_VDRAG 13	/* dragging a vertical separator line */
2949 #define SHAPE_IDX_MORE	14	/* Hit-return or More */
2950 #define SHAPE_IDX_MOREL	15	/* Hit-return or More in last line */
2951 #define SHAPE_IDX_SM	16	/* showing matching paren */
2952 #define SHAPE_IDX_COUNT	17
2953 
2954 #define SHAPE_BLOCK	0	/* block cursor */
2955 #define SHAPE_HOR	1	/* horizontal bar cursor */
2956 #define SHAPE_VER	2	/* vertical bar cursor */
2957 
2958 #define MSHAPE_NUMBERED	1000	/* offset for shapes identified by number */
2959 #define MSHAPE_HIDE	1	/* hide mouse pointer */
2960 
2961 #define SHAPE_MOUSE	1	/* used for mouse pointer shape */
2962 #define SHAPE_CURSOR	2	/* used for text cursor shape */
2963 
2964 typedef struct cursor_entry
2965 {
2966     int		shape;		/* one of the SHAPE_ defines */
2967     int		mshape;		/* one of the MSHAPE defines */
2968     int		percentage;	/* percentage of cell for bar */
2969     long	blinkwait;	/* blinking, wait time before blinking starts */
2970     long	blinkon;	/* blinking, on time */
2971     long	blinkoff;	/* blinking, off time */
2972     int		id;		/* highlight group ID */
2973     int		id_lm;		/* highlight group ID for :lmap mode */
2974     char	*name;		/* mode name (fixed) */
2975     char	used_for;	/* SHAPE_MOUSE and/or SHAPE_CURSOR */
2976 } cursorentry_T;
2977 #endif /* CURSOR_SHAPE */
2978 
2979 #ifdef FEAT_MENU
2980 
2981 /* Indices into vimmenu_T->strings[] and vimmenu_T->noremap[] for each mode */
2982 #define MENU_INDEX_INVALID	-1
2983 #define MENU_INDEX_NORMAL	0
2984 #define MENU_INDEX_VISUAL	1
2985 #define MENU_INDEX_SELECT	2
2986 #define MENU_INDEX_OP_PENDING	3
2987 #define MENU_INDEX_INSERT	4
2988 #define MENU_INDEX_CMDLINE	5
2989 #define MENU_INDEX_TIP		6
2990 #define MENU_MODES		7
2991 
2992 /* Menu modes */
2993 #define MENU_NORMAL_MODE	(1 << MENU_INDEX_NORMAL)
2994 #define MENU_VISUAL_MODE	(1 << MENU_INDEX_VISUAL)
2995 #define MENU_SELECT_MODE	(1 << MENU_INDEX_SELECT)
2996 #define MENU_OP_PENDING_MODE	(1 << MENU_INDEX_OP_PENDING)
2997 #define MENU_INSERT_MODE	(1 << MENU_INDEX_INSERT)
2998 #define MENU_CMDLINE_MODE	(1 << MENU_INDEX_CMDLINE)
2999 #define MENU_TIP_MODE		(1 << MENU_INDEX_TIP)
3000 #define MENU_ALL_MODES		((1 << MENU_INDEX_TIP) - 1)
3001 /*note MENU_INDEX_TIP is not a 'real' mode*/
3002 
3003 /* Start a menu name with this to not include it on the main menu bar */
3004 #define MNU_HIDDEN_CHAR		']'
3005 
3006 typedef struct VimMenu vimmenu_T;
3007 
3008 struct VimMenu
3009 {
3010     int		modes;		    /* Which modes is this menu visible for? */
3011     int		enabled;	    /* for which modes the menu is enabled */
3012     char_u	*name;		    /* Name of menu, possibly translated */
3013     char_u	*dname;		    /* Displayed Name ("name" without '&') */
3014 #ifdef FEAT_MULTI_LANG
3015     char_u	*en_name;	    /* "name" untranslated, NULL when "name"
3016 				     * was not translated */
3017     char_u	*en_dname;	    /* "dname" untranslated, NULL when "dname"
3018 				     * was not translated */
3019 #endif
3020     int		mnemonic;	    /* mnemonic key (after '&') */
3021     char_u	*actext;	    /* accelerator text (after TAB) */
3022     int		priority;	    /* Menu order priority */
3023 #ifdef FEAT_GUI
3024     void	(*cb)(vimmenu_T *);	    /* Call-back routine */
3025 #endif
3026 #ifdef FEAT_TOOLBAR
3027     char_u	*iconfile;	    /* name of file for icon or NULL */
3028     int		iconidx;	    /* icon index (-1 if not set) */
3029     int		icon_builtin;	    /* icon names is BuiltIn{nr} */
3030 #endif
3031     char_u	*strings[MENU_MODES]; /* Mapped string for each mode */
3032     int		noremap[MENU_MODES]; /* A REMAP_ flag for each mode */
3033     char	silent[MENU_MODES]; /* A silent flag for each mode */
3034     vimmenu_T	*children;	    /* Children of sub-menu */
3035     vimmenu_T	*parent;	    /* Parent of menu */
3036     vimmenu_T	*next;		    /* Next item in menu */
3037 #ifdef FEAT_GUI_X11
3038     Widget	id;		    /* Manage this to enable item */
3039     Widget	submenu_id;	    /* If this is submenu, add children here */
3040 #endif
3041 #ifdef FEAT_GUI_GTK
3042     GtkWidget	*id;		    /* Manage this to enable item */
3043     GtkWidget	*submenu_id;	    /* If this is submenu, add children here */
3044 # if defined(GTK_CHECK_VERSION) && !GTK_CHECK_VERSION(3,4,0)
3045     GtkWidget	*tearoff_handle;
3046 # endif
3047     GtkWidget   *label;		    /* Used by "set wak=" code. */
3048 #endif
3049 #ifdef FEAT_GUI_MOTIF
3050     int		sensitive;	    /* turn button on/off */
3051     char	**xpm;		    /* pixmap data */
3052     char	*xpm_fname;	    /* file with pixmap data */
3053 #endif
3054 #ifdef FEAT_GUI_ATHENA
3055     Pixmap	image;		    /* Toolbar image */
3056 #endif
3057 #ifdef FEAT_BEVAL_TIP
3058     BalloonEval *tip;		    /* tooltip for this menu item */
3059 #endif
3060 #ifdef FEAT_GUI_W32
3061     UINT	id;		    /* Id of menu item */
3062     HMENU	submenu_id;	    /* If this is submenu, add children here */
3063     HWND	tearoff_handle;	    /* hWnd of tearoff if created */
3064 #endif
3065 #ifdef FEAT_GUI_MAC
3066 /*  MenuHandle	id; */
3067 /*  short	index;	*/	    /* the item index within the father menu */
3068     short	menu_id;	    /* the menu id to which this item belong */
3069     short	submenu_id;	    /* the menu id of the children (could be
3070 				       get through some tricks) */
3071     MenuHandle	menu_handle;
3072     MenuHandle	submenu_handle;
3073 #endif
3074 #ifdef FEAT_GUI_PHOTON
3075     PtWidget_t	*id;
3076     PtWidget_t	*submenu_id;
3077 #endif
3078 };
3079 #else
3080 /* For generating prototypes when FEAT_MENU isn't defined. */
3081 typedef int vimmenu_T;
3082 
3083 #endif /* FEAT_MENU */
3084 
3085 /*
3086  * Struct to save values in before executing autocommands for a buffer that is
3087  * not the current buffer.  Without FEAT_AUTOCMD only "curbuf" is remembered.
3088  */
3089 typedef struct
3090 {
3091     buf_T	*save_curbuf;	/* saved curbuf */
3092 #ifdef FEAT_AUTOCMD
3093     int		use_aucmd_win;	/* using aucmd_win */
3094     win_T	*save_curwin;	/* saved curwin */
3095     win_T	*new_curwin;	/* new curwin */
3096     bufref_T	new_curbuf;	/* new curbuf */
3097     char_u	*globaldir;	/* saved value of globaldir */
3098 #endif
3099 } aco_save_T;
3100 
3101 /*
3102  * Generic option table item, only used for printer at the moment.
3103  */
3104 typedef struct
3105 {
3106     const char	*name;
3107     int		hasnum;
3108     long	number;
3109     char_u	*string;	/* points into option string */
3110     int		strlen;
3111     int		present;
3112 } option_table_T;
3113 
3114 /*
3115  * Structure to hold printing color and font attributes.
3116  */
3117 typedef struct
3118 {
3119     long_u	fg_color;
3120     long_u	bg_color;
3121     int		bold;
3122     int		italic;
3123     int		underline;
3124     int		undercurl;
3125 } prt_text_attr_T;
3126 
3127 /*
3128  * Structure passed back to the generic printer code.
3129  */
3130 typedef struct
3131 {
3132     int		n_collated_copies;
3133     int		n_uncollated_copies;
3134     int		duplex;
3135     int		chars_per_line;
3136     int		lines_per_page;
3137     int		has_color;
3138     prt_text_attr_T number;
3139 #ifdef FEAT_SYN_HL
3140     int		modec;
3141     int		do_syntax;
3142 #endif
3143     int		user_abort;
3144     char_u	*jobname;
3145 #ifdef FEAT_POSTSCRIPT
3146     char_u	*outfile;
3147     char_u	*arguments;
3148 #endif
3149 } prt_settings_T;
3150 
3151 #define PRINT_NUMBER_WIDTH 8
3152 
3153 /*
3154  * Used for popup menu items.
3155  */
3156 typedef struct
3157 {
3158     char_u	*pum_text;	/* main menu text */
3159     char_u	*pum_kind;	/* extra kind text (may be truncated) */
3160     char_u	*pum_extra;	/* extra menu text (may be truncated) */
3161     char_u	*pum_info;	/* extra info */
3162 } pumitem_T;
3163 
3164 /*
3165  * Structure used for get_tagfname().
3166  */
3167 typedef struct
3168 {
3169     char_u	*tn_tags;	/* value of 'tags' when starting */
3170     char_u	*tn_np;		/* current position in tn_tags */
3171     int		tn_did_filefind_init;
3172     int		tn_hf_idx;
3173     void	*tn_search_ctx;
3174 } tagname_T;
3175 
3176 /*
3177  * Array indexes used for cptext argument of ins_compl_add().
3178  */
3179 #define CPT_ABBR    0	/* "abbr" */
3180 #define CPT_MENU    1	/* "menu" */
3181 #define CPT_KIND    2	/* "kind" */
3182 #define CPT_INFO    3	/* "info" */
3183 #define CPT_COUNT   4	/* Number of entries */
3184 
3185 typedef struct {
3186   UINT32_T total[2];
3187   UINT32_T state[8];
3188   char_u   buffer[64];
3189 } context_sha256_T;
3190 
3191 /*
3192  * Structure used for reading in json_decode().
3193  */
3194 struct js_reader
3195 {
3196     char_u	*js_buf;	/* text to be decoded */
3197     char_u	*js_end;	/* NUL in js_buf */
3198     int		js_used;	/* bytes used from js_buf */
3199     int		(*js_fill)(struct js_reader *);
3200 				/* function to fill the buffer or NULL;
3201                                  * return TRUE when the buffer was filled */
3202     void	*js_cookie;	/* can be used by js_fill */
3203     int		js_cookie_arg;	/* can be used by js_fill */
3204 };
3205 typedef struct js_reader js_read_T;
3206 
3207 typedef struct timer_S timer_T;
3208 struct timer_S
3209 {
3210     long	tr_id;
3211 #ifdef FEAT_TIMERS
3212     timer_T	*tr_next;
3213     timer_T	*tr_prev;
3214     proftime_T	tr_due;		    /* when the callback is to be invoked */
3215     char	tr_firing;	    /* when TRUE callback is being called */
3216     char	tr_paused;	    /* when TRUE callback is not invoked */
3217     int		tr_repeat;	    /* number of times to repeat, -1 forever */
3218     long	tr_interval;	    /* msec */
3219     char_u	*tr_callback;	    /* allocated */
3220     partial_T	*tr_partial;
3221 #endif
3222 };
3223 
3224 /* Maximum number of commands from + or -c arguments. */
3225 #define MAX_ARG_CMDS 10
3226 
3227 /* values for "window_layout" */
3228 #define WIN_HOR	    1	    /* "-o" horizontally split windows */
3229 #define	WIN_VER	    2	    /* "-O" vertically split windows */
3230 #define	WIN_TABS    3	    /* "-p" windows on tab pages */
3231 
3232 /* Struct for various parameters passed between main() and other functions. */
3233 typedef struct
3234 {
3235     int		argc;
3236     char	**argv;
3237 
3238     char_u	*fname;			/* first file to edit */
3239 
3240     int		evim_mode;		/* started as "evim" */
3241     char_u	*use_vimrc;		/* vimrc from -u argument */
3242 
3243     int		n_commands;		     /* no. of commands from + or -c */
3244     char_u	*commands[MAX_ARG_CMDS];     /* commands from + or -c arg. */
3245     char_u	cmds_tofree[MAX_ARG_CMDS];   /* commands that need free() */
3246     int		n_pre_commands;		     /* no. of commands from --cmd */
3247     char_u	*pre_commands[MAX_ARG_CMDS]; /* commands from --cmd argument */
3248 
3249     int		edit_type;		/* type of editing to do */
3250     char_u	*tagname;		/* tag from -t argument */
3251 #ifdef FEAT_QUICKFIX
3252     char_u	*use_ef;		/* 'errorfile' from -q argument */
3253 #endif
3254 
3255     int		want_full_screen;
3256     int		not_a_term;		/* no warning for missing term? */
3257     int		tty_fail;		/* exit if not a tty */
3258     char_u	*term;			/* specified terminal name */
3259 #ifdef FEAT_CRYPT
3260     int		ask_for_key;		/* -x argument */
3261 #endif
3262     int		no_swap_file;		/* "-n" argument used */
3263 #ifdef FEAT_EVAL
3264     int		use_debug_break_level;
3265 #endif
3266 #ifdef FEAT_WINDOWS
3267     int		window_count;		/* number of windows to use */
3268     int		window_layout;		/* 0, WIN_HOR, WIN_VER or WIN_TABS */
3269 #endif
3270 
3271 #ifdef FEAT_CLIENTSERVER
3272     int		serverArg;		/* TRUE when argument for a server */
3273     char_u	*serverName_arg;	/* cmdline arg for server name */
3274     char_u	*serverStr;		/* remote server command */
3275     char_u	*serverStrEnc;		/* encoding of serverStr */
3276     char_u	*servername;		/* allocated name for our server */
3277 #endif
3278 #if !defined(UNIX)
3279 # define EXPAND_FILENAMES
3280     int		literal;		/* don't expand file names */
3281 #endif
3282 #ifdef MSWIN
3283     int		full_path;		/* file name argument was full path */
3284 #endif
3285 #ifdef FEAT_DIFF
3286     int		diff_mode;		/* start with 'diff' set */
3287 #endif
3288 } mparm_T;
3289 
3290 /*
3291  * Structure returned by get_lval() and used by set_var_lval().
3292  * For a plain name:
3293  *	"name"	    points to the variable name.
3294  *	"exp_name"  is NULL.
3295  *	"tv"	    is NULL
3296  * For a magic braces name:
3297  *	"name"	    points to the expanded variable name.
3298  *	"exp_name"  is non-NULL, to be freed later.
3299  *	"tv"	    is NULL
3300  * For an index in a list:
3301  *	"name"	    points to the (expanded) variable name.
3302  *	"exp_name"  NULL or non-NULL, to be freed later.
3303  *	"tv"	    points to the (first) list item value
3304  *	"li"	    points to the (first) list item
3305  *	"range", "n1", "n2" and "empty2" indicate what items are used.
3306  * For an existing Dict item:
3307  *	"name"	    points to the (expanded) variable name.
3308  *	"exp_name"  NULL or non-NULL, to be freed later.
3309  *	"tv"	    points to the dict item value
3310  *	"newkey"    is NULL
3311  * For a non-existing Dict item:
3312  *	"name"	    points to the (expanded) variable name.
3313  *	"exp_name"  NULL or non-NULL, to be freed later.
3314  *	"tv"	    points to the Dictionary typval_T
3315  *	"newkey"    is the key for the new item.
3316  */
3317 typedef struct lval_S
3318 {
3319     char_u	*ll_name;	/* start of variable name (can be NULL) */
3320     char_u	*ll_exp_name;	/* NULL or expanded name in allocated memory. */
3321     typval_T	*ll_tv;		/* Typeval of item being used.  If "newkey"
3322 				   isn't NULL it's the Dict to which to add
3323 				   the item. */
3324     listitem_T	*ll_li;		/* The list item or NULL. */
3325     list_T	*ll_list;	/* The list or NULL. */
3326     int		ll_range;	/* TRUE when a [i:j] range was used */
3327     long	ll_n1;		/* First index for list */
3328     long	ll_n2;		/* Second index for list range */
3329     int		ll_empty2;	/* Second index is empty: [i:] */
3330     dict_T	*ll_dict;	/* The Dictionary or NULL */
3331     dictitem_T	*ll_di;		/* The dictitem or NULL */
3332     char_u	*ll_newkey;	/* New key for Dict in alloc. mem or NULL. */
3333 } lval_T;
3334