xref: /vim-8.2.3635/src/structs.h (revision 00a927d6)
1 /* vi:set ts=8 sts=4 sw=4:
2  *
3  * VIM - Vi IMproved	by Bram Moolenaar
4  *
5  * Do ":help uganda"  in Vim to read copying and usage conditions.
6  * Do ":help credits" in Vim to see a list of people who contributed.
7  */
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 /*
67  * This is here because regexp.h needs pos_T and below regprog_T is used.
68  */
69 #include "regexp.h"
70 
71 typedef struct window_S		win_T;
72 typedef struct wininfo_S	wininfo_T;
73 typedef struct frame_S		frame_T;
74 typedef int			scid_T;		/* script ID */
75 
76 /*
77  * This is here because gui.h needs the pos_T and win_T, and win_T needs gui.h
78  * for scrollbar_T.
79  */
80 #ifdef FEAT_GUI
81 # include "gui.h"
82 #else
83 # ifdef FEAT_XCLIPBOARD
84 #  include <X11/Intrinsic.h>
85 # endif
86 # define guicolor_T int		/* avoid error in prototypes */
87 #endif
88 
89 /*
90  * marks: positions in a file
91  * (a normal mark is a lnum/col pair, the same as a file position)
92  */
93 
94 /* (Note: for EBCDIC there are more than 26, because there are gaps in the
95  * alphabet coding.  To minimize changes to the code, I decided to just
96  * increase the number of possible marks. */
97 #define NMARKS		('z' - 'a' + 1)	/* max. # of named marks */
98 #define JUMPLISTSIZE	100		/* max. # of marks in jump list */
99 #define TAGSTACKSIZE	20		/* max. # of tags in tag stack */
100 
101 typedef struct filemark
102 {
103     pos_T	mark;		/* cursor position */
104     int		fnum;		/* file number */
105 } fmark_T;
106 
107 /* Xtended file mark: also has a file name */
108 typedef struct xfilemark
109 {
110     fmark_T	fmark;
111     char_u	*fname;		/* file name, used when fnum == 0 */
112 } xfmark_T;
113 
114 /*
115  * The taggy struct is used to store the information about a :tag command.
116  */
117 typedef struct taggy
118 {
119     char_u	*tagname;	/* tag name */
120     fmark_T	fmark;		/* cursor position BEFORE ":tag" */
121     int		cur_match;	/* match number */
122     int		cur_fnum;	/* buffer number used for cur_match */
123 } taggy_T;
124 
125 /*
126  * Structure that contains all options that are local to a window.
127  * Used twice in a window: for the current buffer and for all buffers.
128  * Also used in wininfo_T.
129  */
130 typedef struct
131 {
132 #ifdef FEAT_ARABIC
133     int		wo_arab;
134 # define w_p_arab w_onebuf_opt.wo_arab	/* 'arabic' */
135 #endif
136 #ifdef FEAT_DIFF
137     int		wo_diff;
138 # define w_p_diff w_onebuf_opt.wo_diff	/* 'diff' */
139 #endif
140 #ifdef FEAT_FOLDING
141     long	wo_fdc;
142 # define w_p_fdc w_onebuf_opt.wo_fdc	/* 'foldcolumn' */
143     int		wo_fen;
144 # define w_p_fen w_onebuf_opt.wo_fen	/* 'foldenable' */
145     char_u	*wo_fdi;
146 # define w_p_fdi w_onebuf_opt.wo_fdi	/* 'foldignore' */
147     long	wo_fdl;
148 # define w_p_fdl w_onebuf_opt.wo_fdl	/* 'foldlevel' */
149     char_u	*wo_fdm;
150 # define w_p_fdm w_onebuf_opt.wo_fdm	/* 'foldmethod' */
151     long	wo_fml;
152 # define w_p_fml w_onebuf_opt.wo_fml	/* 'foldminlines' */
153     long	wo_fdn;
154 # define w_p_fdn w_onebuf_opt.wo_fdn	/* 'foldnestmax' */
155 # ifdef FEAT_EVAL
156     char_u	*wo_fde;
157 # define w_p_fde w_onebuf_opt.wo_fde	/* 'foldexpr' */
158     char_u	*wo_fdt;
159 #  define w_p_fdt w_onebuf_opt.wo_fdt	/* 'foldtext' */
160 # endif
161     char_u	*wo_fmr;
162 # define w_p_fmr w_onebuf_opt.wo_fmr	/* 'foldmarker' */
163 #endif
164 #ifdef FEAT_LINEBREAK
165     int		wo_lbr;
166 # define w_p_lbr w_onebuf_opt.wo_lbr	/* 'linebreak' */
167 #endif
168     int		wo_list;
169 #define w_p_list w_onebuf_opt.wo_list	/* 'list' */
170     int		wo_nu;
171 #define w_p_nu w_onebuf_opt.wo_nu	/* 'number' */
172 #ifdef FEAT_LINEBREAK
173     long	wo_nuw;
174 # define w_p_nuw w_onebuf_opt.wo_nuw	/* 'numberwidth' */
175 #endif
176 #if defined(FEAT_WINDOWS)
177     int		wo_wfh;
178 # define w_p_wfh w_onebuf_opt.wo_wfh	/* 'winfixheight' */
179     int		wo_wfw;
180 # define w_p_wfw w_onebuf_opt.wo_wfw	/* 'winfixwidth' */
181 #endif
182 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
183     int		wo_pvw;
184 # define w_p_pvw w_onebuf_opt.wo_pvw	/* 'previewwindow' */
185 #endif
186 #ifdef FEAT_RIGHTLEFT
187     int		wo_rl;
188 # define w_p_rl w_onebuf_opt.wo_rl	/* 'rightleft' */
189     char_u	*wo_rlc;
190 # define w_p_rlc w_onebuf_opt.wo_rlc	/* 'rightleftcmd' */
191 #endif
192     long	wo_scr;
193 #define w_p_scr w_onebuf_opt.wo_scr	/* 'scroll' */
194 #ifdef FEAT_SPELL
195     int		wo_spell;
196 # define w_p_spell w_onebuf_opt.wo_spell /* 'spell' */
197 #endif
198 #ifdef FEAT_SYN_HL
199     int		wo_cuc;
200 # define w_p_cuc w_onebuf_opt.wo_cuc	/* 'cursorcolumn' */
201     int		wo_cul;
202 # define w_p_cul w_onebuf_opt.wo_cul	/* 'cursorline' */
203 #endif
204 #ifdef FEAT_STL_OPT
205     char_u	*wo_stl;
206 #define w_p_stl w_onebuf_opt.wo_stl	/* 'statusline' */
207 #endif
208 #ifdef FEAT_SCROLLBIND
209     int		wo_scb;
210 # define w_p_scb w_onebuf_opt.wo_scb	/* 'scrollbind' */
211 #endif
212     int		wo_wrap;
213 #define w_p_wrap w_onebuf_opt.wo_wrap	/* 'wrap' */
214 
215 #ifdef FEAT_EVAL
216     int		wo_scriptID[WV_COUNT];	/* SIDs for window-local options */
217 # define w_p_scriptID w_onebuf_opt.wo_scriptID
218 #endif
219 } winopt_T;
220 
221 /*
222  * Window info stored with a buffer.
223  *
224  * Two types of info are kept for a buffer which are associated with a
225  * specific window:
226  * 1. Each window can have a different line number associated with a buffer.
227  * 2. The window-local options for a buffer work in a similar way.
228  * The window-info is kept in a list at b_wininfo.  It is kept in
229  * most-recently-used order.
230  */
231 struct wininfo_S
232 {
233     wininfo_T	*wi_next;	/* next entry or NULL for last entry */
234     wininfo_T	*wi_prev;	/* previous entry or NULL for first entry */
235     win_T	*wi_win;	/* pointer to window that did set wi_fpos */
236     pos_T	wi_fpos;	/* last cursor position in the file */
237     int		wi_optset;	/* TRUE when wi_opt has useful values */
238     winopt_T	wi_opt;		/* local window options */
239 #ifdef FEAT_FOLDING
240     int		wi_fold_manual;	/* copy of w_fold_manual */
241     garray_T	wi_folds;	/* clone of w_folds */
242 #endif
243 };
244 
245 /*
246  * Info used to pass info about a fold from the fold-detection code to the
247  * code that displays the foldcolumn.
248  */
249 typedef struct foldinfo
250 {
251     int		fi_level;	/* level of the fold; when this is zero the
252 				   other fields are invalid */
253     int		fi_lnum;	/* line number where fold starts */
254     int		fi_low_level;	/* lowest fold level that starts in the same
255 				   line */
256 } foldinfo_T;
257 
258 /* Structure to store info about the Visual area. */
259 typedef struct
260 {
261     pos_T	vi_start;	/* start pos of last VIsual */
262     pos_T	vi_end;		/* end position of last VIsual */
263     int		vi_mode;	/* VIsual_mode of last VIsual */
264     colnr_T	vi_curswant;	/* MAXCOL from w_curswant */
265 } visualinfo_T;
266 
267 /*
268  * structures used for undo
269  */
270 
271 typedef struct u_entry u_entry_T;
272 typedef struct u_header u_header_T;
273 struct u_entry
274 {
275     u_entry_T	*ue_next;	/* pointer to next entry in list */
276     linenr_T	ue_top;		/* number of line above undo block */
277     linenr_T	ue_bot;		/* number of line below undo block */
278     linenr_T	ue_lcount;	/* linecount when u_save called */
279     char_u	**ue_array;	/* array of lines in undo block */
280     long	ue_size;	/* number of lines in ue_array */
281 #ifdef U_DEBUG
282     int		ue_magic;	/* magic number to check allocation */
283 #endif
284 };
285 
286 struct u_header
287 {
288     u_header_T	*uh_next;	/* pointer to next undo header in list */
289     u_header_T	*uh_prev;	/* pointer to previous header in list */
290     u_header_T	*uh_alt_next;	/* pointer to next header for alt. redo */
291     u_header_T	*uh_alt_prev;	/* pointer to previous header for alt. redo */
292     long	uh_seq;		/* sequence number, higher == newer undo */
293     int		uh_walk;	/* used by undo_time() */
294     u_entry_T	*uh_entry;	/* pointer to first entry */
295     u_entry_T	*uh_getbot_entry; /* pointer to where ue_bot must be set */
296     pos_T	uh_cursor;	/* cursor position before saving */
297 #ifdef FEAT_VIRTUALEDIT
298     long	uh_cursor_vcol;
299 #endif
300     int		uh_flags;	/* see below */
301     pos_T	uh_namedm[NMARKS];	/* marks before undo/after redo */
302 #ifdef FEAT_VISUAL
303     visualinfo_T uh_visual;	/* Visual areas before undo/after redo */
304 #endif
305     time_t	uh_time;	/* timestamp when the change was made */
306 #ifdef U_DEBUG
307     int		uh_magic;	/* magic number to check allocation */
308 #endif
309 };
310 
311 /* values for uh_flags */
312 #define UH_CHANGED  0x01	/* b_changed flag before undo/after redo */
313 #define UH_EMPTYBUF 0x02	/* buffer was empty */
314 
315 /*
316  * structures used in undo.c
317  */
318 #if SIZEOF_INT > 2
319 # define ALIGN_LONG	/* longword alignment and use filler byte */
320 # define ALIGN_SIZE (sizeof(long))
321 #else
322 # define ALIGN_SIZE (sizeof(short))
323 #endif
324 
325 #define ALIGN_MASK (ALIGN_SIZE - 1)
326 
327 typedef struct m_info minfo_T;
328 
329 /*
330  * stucture used to link chunks in one of the free chunk lists.
331  */
332 struct m_info
333 {
334 #ifdef ALIGN_LONG
335     long_u	m_size;		/* size of the chunk (including m_info) */
336 #else
337     short_u	m_size;		/* size of the chunk (including m_info) */
338 #endif
339     minfo_T	*m_next;	/* pointer to next free chunk in the list */
340 };
341 
342 /*
343  * structure used to link blocks in the list of allocated blocks.
344  */
345 typedef struct m_block mblock_T;
346 struct m_block
347 {
348     mblock_T	*mb_next;	/* pointer to next allocated block */
349     size_t	mb_size;	/* total size of all chunks in this block */
350     size_t	mb_maxsize;	/* size of largest fee chunk */
351     minfo_T	mb_info;	/* head of free chunk list for this block */
352 };
353 
354 /*
355  * things used in memfile.c
356  */
357 
358 typedef struct block_hdr    bhdr_T;
359 typedef struct memfile	    memfile_T;
360 typedef long		    blocknr_T;
361 
362 /*
363  * for each (previously) used block in the memfile there is one block header.
364  *
365  * The block may be linked in the used list OR in the free list.
366  * The used blocks are also kept in hash lists.
367  *
368  * The used list is a doubly linked list, most recently used block first.
369  *	The blocks in the used list have a block of memory allocated.
370  *	mf_used_count is the number of pages in the used list.
371  * The hash lists are used to quickly find a block in the used list.
372  * The free list is a single linked list, not sorted.
373  *	The blocks in the free list have no block of memory allocated and
374  *	the contents of the block in the file (if any) is irrelevant.
375  */
376 
377 struct block_hdr
378 {
379     bhdr_T	*bh_next;	    /* next block_hdr in free or used list */
380     bhdr_T	*bh_prev;	    /* previous block_hdr in used list */
381     bhdr_T	*bh_hash_next;	    /* next block_hdr in hash list */
382     bhdr_T	*bh_hash_prev;	    /* previous block_hdr in hash list */
383     blocknr_T	bh_bnum;		/* block number */
384     char_u	*bh_data;	    /* pointer to memory (for used block) */
385     int		bh_page_count;	    /* number of pages in this block */
386 
387 #define BH_DIRTY    1
388 #define BH_LOCKED   2
389     char	bh_flags;	    /* BH_DIRTY or BH_LOCKED */
390 };
391 
392 /*
393  * when a block with a negative number is flushed to the file, it gets
394  * a positive number. Because the reference to the block is still the negative
395  * number, we remember the translation to the new positive number in the
396  * double linked trans lists. The structure is the same as the hash lists.
397  */
398 typedef struct nr_trans NR_TRANS;
399 
400 struct nr_trans
401 {
402     NR_TRANS	*nt_next;		/* next nr_trans in hash list */
403     NR_TRANS	*nt_prev;		/* previous nr_trans in hash list */
404     blocknr_T	nt_old_bnum;		/* old, negative, number */
405     blocknr_T	nt_new_bnum;		/* new, positive, number */
406 };
407 
408 /*
409  * structure used to store one block of the stuff/redo/recording buffers
410  */
411 struct buffblock
412 {
413     struct buffblock	*b_next;	/* pointer to next buffblock */
414     char_u		b_str[1];	/* contents (actually longer) */
415 };
416 
417 /*
418  * header used for the stuff buffer and the redo buffer
419  */
420 struct buffheader
421 {
422     struct buffblock	bh_first;	/* first (dummy) block of list */
423     struct buffblock	*bh_curr;	/* buffblock for appending */
424     int			bh_index;	/* index for reading */
425     int			bh_space;	/* space in bh_curr for appending */
426 };
427 
428 /*
429  * used for completion on the command line
430  */
431 typedef struct expand
432 {
433     int		xp_context;		/* type of expansion */
434     char_u	*xp_pattern;		/* start of item to expand */
435     int		xp_pattern_len;		/* bytes in xp_pattern before cursor */
436 #if defined(FEAT_USR_CMDS) && defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
437     char_u	*xp_arg;		/* completion function */
438     int		xp_scriptID;		/* SID for completion function */
439 #endif
440     int		xp_backslash;		/* one of the XP_BS_ values */
441 #ifndef BACKSLASH_IN_FILENAME
442     int		xp_shell;		/* for a shell command more characters
443 					   need to be escaped */
444 #endif
445     int		xp_numfiles;		/* number of files found by
446 						    file name completion */
447     char_u	**xp_files;		/* list of files */
448 } expand_T;
449 
450 /* values for xp_backslash */
451 #define XP_BS_NONE	0	/* nothing special for backslashes */
452 #define XP_BS_ONE	1	/* uses one backslash before a space */
453 #define XP_BS_THREE	2	/* uses three backslashes before a space */
454 
455 /*
456  * Command modifiers ":vertical", ":browse", ":confirm" and ":hide" set a flag.
457  * This needs to be saved for recursive commands, put them in a structure for
458  * easy manipulation.
459  */
460 typedef struct
461 {
462     int		hide;			/* TRUE when ":hide" was used */
463 # ifdef FEAT_BROWSE_CMD
464     int		browse;			/* TRUE to invoke file dialog */
465 # endif
466 # ifdef FEAT_WINDOWS
467     int		split;			/* flags for win_split() */
468     int		tab;			/* > 0 when ":tab" was used */
469 # endif
470 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
471     int		confirm;		/* TRUE to invoke yes/no dialog */
472 # endif
473     int		keepalt;		/* TRUE when ":keepalt" was used */
474     int		keepmarks;		/* TRUE when ":keepmarks" was used */
475     int		keepjumps;		/* TRUE when ":keepjumps" was used */
476     int		lockmarks;		/* TRUE when ":lockmarks" was used */
477 # ifdef FEAT_AUTOCMD
478     char_u	*save_ei;		/* saved value of 'eventignore' */
479 # endif
480 } cmdmod_T;
481 
482 /*
483  * Simplistic hashing scheme to quickly locate the blocks in the used list.
484  * 64 blocks are found directly (64 * 4K = 256K, most files are smaller).
485  */
486 #define MEMHASHSIZE	64
487 #define MEMHASH(nr)	((nr) & (MEMHASHSIZE - 1))
488 
489 struct memfile
490 {
491     char_u	*mf_fname;		/* name of the file */
492     char_u	*mf_ffname;		/* idem, full path */
493     int		mf_fd;			/* file descriptor */
494     bhdr_T	*mf_free_first;		/* first block_hdr in free list */
495     bhdr_T	*mf_used_first;		/* mru block_hdr in used list */
496     bhdr_T	*mf_used_last;		/* lru block_hdr in used list */
497     unsigned	mf_used_count;		/* number of pages in used list */
498     unsigned	mf_used_count_max;	/* maximum number of pages in memory */
499     bhdr_T	*mf_hash[MEMHASHSIZE];	/* array of hash lists */
500     NR_TRANS	*mf_trans[MEMHASHSIZE];	/* array of trans lists */
501     blocknr_T	mf_blocknr_max;		/* highest positive block number + 1*/
502     blocknr_T	mf_blocknr_min;		/* lowest negative block number - 1 */
503     blocknr_T	mf_neg_count;		/* number of negative blocks numbers */
504     blocknr_T	mf_infile_count;	/* number of pages in the file */
505     unsigned	mf_page_size;		/* number of bytes in a page */
506     int		mf_dirty;		/* TRUE if there are dirty blocks */
507 };
508 
509 /*
510  * things used in memline.c
511  */
512 /*
513  * When searching for a specific line, we remember what blocks in the tree
514  * are the branches leading to that block. This is stored in ml_stack.  Each
515  * entry is a pointer to info in a block (may be data block or pointer block)
516  */
517 typedef struct info_pointer
518 {
519     blocknr_T	ip_bnum;	/* block number */
520     linenr_T	ip_low;		/* lowest lnum in this block */
521     linenr_T	ip_high;	/* highest lnum in this block */
522     int		ip_index;	/* index for block with current lnum */
523 } infoptr_T;	/* block/index pair */
524 
525 #ifdef FEAT_BYTEOFF
526 typedef struct ml_chunksize
527 {
528     int		mlcs_numlines;
529     long	mlcs_totalsize;
530 } chunksize_T;
531 
532  /* Flags when calling ml_updatechunk() */
533 
534 #define ML_CHNK_ADDLINE 1
535 #define ML_CHNK_DELLINE 2
536 #define ML_CHNK_UPDLINE 3
537 #endif
538 
539 /*
540  * the memline structure holds all the information about a memline
541  */
542 typedef struct memline
543 {
544     linenr_T	ml_line_count;	/* number of lines in the buffer */
545 
546     memfile_T	*ml_mfp;	/* pointer to associated memfile */
547 
548 #define ML_EMPTY	1	/* empty buffer */
549 #define ML_LINE_DIRTY	2	/* cached line was changed and allocated */
550 #define ML_LOCKED_DIRTY	4	/* ml_locked was changed */
551 #define ML_LOCKED_POS	8	/* ml_locked needs positive block number */
552     int		ml_flags;
553 
554     infoptr_T	*ml_stack;	/* stack of pointer blocks (array of IPTRs) */
555     int		ml_stack_top;	/* current top if ml_stack */
556     int		ml_stack_size;	/* total number of entries in ml_stack */
557 
558     linenr_T	ml_line_lnum;	/* line number of cached line, 0 if not valid */
559     char_u	*ml_line_ptr;	/* pointer to cached line */
560 
561     bhdr_T	*ml_locked;	/* block used by last ml_get */
562     linenr_T	ml_locked_low;	/* first line in ml_locked */
563     linenr_T	ml_locked_high;	/* last line in ml_locked */
564     int		ml_locked_lineadd;  /* number of lines inserted in ml_locked */
565 #ifdef FEAT_BYTEOFF
566     chunksize_T *ml_chunksize;
567     int		ml_numchunks;
568     int		ml_usedchunks;
569 #endif
570 } memline_T;
571 
572 #if defined(FEAT_SIGNS) || defined(PROTO)
573 typedef struct signlist signlist_T;
574 
575 struct signlist
576 {
577     int		id;		/* unique identifier for each placed sign */
578     linenr_T	lnum;		/* line number which has this sign */
579     int		typenr;		/* typenr of sign */
580     signlist_T	*next;		/* next signlist entry */
581 # ifdef FEAT_NETBEANS_INTG
582     signlist_T  *prev;		/* previous entry -- for easy reordering */
583 # endif
584 };
585 
586 /* type argument for buf_getsigntype() */
587 #define SIGN_ANY	0
588 #define SIGN_LINEHL	1
589 #define SIGN_ICON	2
590 #define SIGN_TEXT	3
591 #endif
592 
593 /*
594  * Argument list: Array of file names.
595  * Used for the global argument list and the argument lists local to a window.
596  */
597 typedef struct arglist
598 {
599     garray_T	al_ga;		/* growarray with the array of file names */
600     int		al_refcount;	/* number of windows using this arglist */
601 } alist_T;
602 
603 /*
604  * For each argument remember the file name as it was given, and the buffer
605  * number that contains the expanded file name (required for when ":cd" is
606  * used.
607  */
608 typedef struct argentry
609 {
610     char_u	*ae_fname;	/* file name as specified */
611     int		ae_fnum;	/* buffer number with expanded file name */
612 } aentry_T;
613 
614 #ifdef FEAT_WINDOWS
615 # define ALIST(win) (win)->w_alist
616 #else
617 # define ALIST(win) (&global_alist)
618 #endif
619 #define GARGLIST	((aentry_T *)global_alist.al_ga.ga_data)
620 #define ARGLIST		((aentry_T *)ALIST(curwin)->al_ga.ga_data)
621 #define WARGLIST(wp)	((aentry_T *)ALIST(wp)->al_ga.ga_data)
622 #define AARGLIST(al)	((aentry_T *)((al)->al_ga.ga_data))
623 #define GARGCOUNT	(global_alist.al_ga.ga_len)
624 #define ARGCOUNT	(ALIST(curwin)->al_ga.ga_len)
625 #define WARGCOUNT(wp)	(ALIST(wp)->al_ga.ga_len)
626 
627 /*
628  * A list used for saving values of "emsg_silent".  Used by ex_try() to save the
629  * value of "emsg_silent" if it was non-zero.  When this is done, the CSF_SILENT
630  * flag below is set.
631  */
632 
633 typedef struct eslist_elem eslist_T;
634 struct eslist_elem
635 {
636     int		saved_emsg_silent;	/* saved value of "emsg_silent" */
637     eslist_T	*next;			/* next element on the list */
638 };
639 
640 /*
641  * For conditional commands a stack is kept of nested conditionals.
642  * When cs_idx < 0, there is no conditional command.
643  */
644 #define CSTACK_LEN	50
645 
646 struct condstack
647 {
648     short	cs_flags[CSTACK_LEN];	/* CSF_ flags */
649     char	cs_pending[CSTACK_LEN];	/* CSTP_: what's pending in ":finally"*/
650     union {
651 	void	*csp_rv[CSTACK_LEN];	/* return typeval for pending return */
652 	void	*csp_ex[CSTACK_LEN];	/* exception for pending throw */
653     }		cs_pend;
654     void	*cs_forinfo[CSTACK_LEN]; /* info used by ":for" */
655     int		cs_line[CSTACK_LEN];	/* line nr of ":while"/":for" line */
656     int		cs_idx;			/* current entry, or -1 if none */
657     int		cs_looplevel;		/* nr of nested ":while"s and ":for"s */
658     int		cs_trylevel;		/* nr of nested ":try"s */
659     eslist_T	*cs_emsg_silent_list;	/* saved values of "emsg_silent" */
660     char	cs_lflags;		/* loop flags: CSL_ flags */
661 };
662 # define cs_rettv	cs_pend.csp_rv
663 # define cs_exception	cs_pend.csp_ex
664 
665 /* There is no CSF_IF, the lack of CSF_WHILE, CSF_FOR and CSF_TRY means ":if"
666  * was used. */
667 # define CSF_TRUE	0x0001	/* condition was TRUE */
668 # define CSF_ACTIVE	0x0002	/* current state is active */
669 # define CSF_ELSE	0x0004	/* ":else" has been passed */
670 # define CSF_WHILE	0x0008	/* is a ":while" */
671 # define CSF_FOR	0x0010	/* is a ":for" */
672 
673 # define CSF_TRY	0x0100	/* is a ":try" */
674 # define CSF_FINALLY	0x0200	/* ":finally" has been passed */
675 # define CSF_THROWN	0x0400	/* exception thrown to this try conditional */
676 # define CSF_CAUGHT	0x0800  /* exception caught by this try conditional */
677 # define CSF_SILENT	0x1000	/* "emsg_silent" reset by ":try" */
678 /* Note that CSF_ELSE is only used when CSF_TRY and CSF_WHILE are unset
679  * (an ":if"), and CSF_SILENT is only used when CSF_TRY is set. */
680 
681 /*
682  * What's pending for being reactivated at the ":endtry" of this try
683  * conditional:
684  */
685 # define CSTP_NONE	0	/* nothing pending in ":finally" clause */
686 # define CSTP_ERROR	1	/* an error is pending */
687 # define CSTP_INTERRUPT	2	/* an interrupt is pending */
688 # define CSTP_THROW	4	/* a throw is pending */
689 # define CSTP_BREAK	8	/* ":break" is pending */
690 # define CSTP_CONTINUE	16	/* ":continue" is pending */
691 # define CSTP_RETURN	24	/* ":return" is pending */
692 # define CSTP_FINISH	32	/* ":finish" is pending */
693 
694 /*
695  * Flags for the cs_lflags item in struct condstack.
696  */
697 # define CSL_HAD_LOOP	 1	/* just found ":while" or ":for" */
698 # define CSL_HAD_ENDLOOP 2	/* just found ":endwhile" or ":endfor" */
699 # define CSL_HAD_CONT	 4	/* just found ":continue" */
700 # define CSL_HAD_FINA	 8	/* just found ":finally" */
701 
702 /*
703  * A list of error messages that can be converted to an exception.  "throw_msg"
704  * is only set in the first element of the list.  Usually, it points to the
705  * original message stored in that element, but sometimes it points to a later
706  * message in the list.  See cause_errthrow() below.
707  */
708 struct msglist
709 {
710     char_u		*msg;		/* original message */
711     char_u		*throw_msg;	/* msg to throw: usually original one */
712     struct msglist	*next;		/* next of several messages in a row */
713 };
714 
715 /*
716  * Structure describing an exception.
717  * (don't use "struct exception", it's used by the math library).
718  */
719 typedef struct vim_exception except_T;
720 struct vim_exception
721 {
722     int			type;		/* exception type */
723     char_u		*value;		/* exception value */
724     struct msglist	*messages;	/* message(s) causing error exception */
725     char_u		*throw_name;	/* name of the throw point */
726     linenr_T		throw_lnum;	/* line number of the throw point */
727     except_T		*caught;	/* next exception on the caught stack */
728 };
729 
730 /*
731  * The exception types.
732  */
733 #define ET_USER		0	/* exception caused by ":throw" command */
734 #define ET_ERROR	1	/* error exception */
735 #define ET_INTERRUPT	2	/* interrupt exception triggered by Ctrl-C */
736 
737 /*
738  * Structure to save the error/interrupt/exception state between calls to
739  * enter_cleanup() and leave_cleanup().  Must be allocated as an automatic
740  * variable by the (common) caller of these functions.
741  */
742 typedef struct cleanup_stuff cleanup_T;
743 struct cleanup_stuff
744 {
745     int pending;		/* error/interrupt/exception state */
746     except_T *exception;	/* exception value */
747 };
748 
749 #ifdef FEAT_SYN_HL
750 /* struct passed to in_id_list() */
751 struct sp_syn
752 {
753     int		inc_tag;	/* ":syn include" unique tag */
754     short	id;		/* highlight group ID of item */
755     short	*cont_in_list;	/* cont.in group IDs, if non-zero */
756 };
757 
758 /*
759  * Each keyword has one keyentry, which is linked in a hash list.
760  */
761 typedef struct keyentry keyentry_T;
762 
763 struct keyentry
764 {
765     keyentry_T	*ke_next;	/* next entry with identical "keyword[]" */
766     struct sp_syn k_syn;	/* struct passed to in_id_list() */
767     short	*next_list;	/* ID list for next match (if non-zero) */
768     short	flags;		/* see syntax.c */
769     char_u	keyword[1];	/* actually longer */
770 };
771 
772 /*
773  * Struct used to store one state of the state stack.
774  */
775 typedef struct buf_state
776 {
777     int		    bs_idx;	 /* index of pattern */
778     long	    bs_flags;	 /* flags for pattern */
779     reg_extmatch_T *bs_extmatch; /* external matches from start pattern */
780 } bufstate_T;
781 
782 /*
783  * syn_state contains the syntax state stack for the start of one line.
784  * Used by b_sst_array[].
785  */
786 typedef struct syn_state synstate_T;
787 
788 struct syn_state
789 {
790     synstate_T	*sst_next;	/* next entry in used or free list */
791     linenr_T	sst_lnum;	/* line number for this state */
792     union
793     {
794 	bufstate_T	sst_stack[SST_FIX_STATES]; /* short state stack */
795 	garray_T	sst_ga;	/* growarray for long state stack */
796     } sst_union;
797     int		sst_next_flags;	/* flags for sst_next_list */
798     short	*sst_next_list;	/* "nextgroup" list in this state
799 				 * (this is a copy, don't free it! */
800     short	sst_stacksize;	/* number of states on the stack */
801     disptick_T	sst_tick;	/* tick when last displayed */
802     linenr_T	sst_change_lnum;/* when non-zero, change in this line
803 				 * may have made the state invalid */
804 };
805 #endif /* FEAT_SYN_HL */
806 
807 /*
808  * Structure shared between syntax.c, screen.c and gui_x11.c.
809  */
810 typedef struct attr_entry
811 {
812     short	    ae_attr;		/* HL_BOLD, etc. */
813     union
814     {
815 	struct
816 	{
817 	    char_u	    *start;	/* start escape sequence */
818 	    char_u	    *stop;	/* stop escape sequence */
819 	} term;
820 	struct
821 	{
822 	    /* These colors need to be > 8 bits to hold 256. */
823 	    short_u	    fg_color;	/* foreground color number */
824 	    short_u	    bg_color;	/* background color number */
825 	} cterm;
826 # ifdef FEAT_GUI
827 	struct
828 	{
829 	    guicolor_T	    fg_color;	/* foreground color handle */
830 	    guicolor_T	    bg_color;	/* background color handle */
831 	    guicolor_T	    sp_color;	/* special color handle */
832 	    GuiFont	    font;	/* font handle */
833 #  ifdef FEAT_XFONTSET
834 	    GuiFontset	    fontset;	/* fontset handle */
835 #  endif
836 	} gui;
837 # endif
838     } ae_u;
839 } attrentry_T;
840 
841 #ifdef USE_ICONV
842 # ifdef HAVE_ICONV_H
843 #  include <iconv.h>
844 # else
845 #  if defined(MACOS_X)
846 #   include <sys/errno.h>
847 #   define EILSEQ ENOENT /* MacOS X does not have EILSEQ */
848 typedef struct _iconv_t *iconv_t;
849 #  else
850 #   if defined(MACOS_CLASSIC)
851 typedef struct _iconv_t *iconv_t;
852 #    define EINVAL	22
853 #    define E2BIG	7
854 #    define ENOENT	2
855 #    define EFAULT	14
856 #    define EILSEQ	123
857 #   else
858 #    include <errno.h>
859 #   endif
860 #  endif
861 typedef void *iconv_t;
862 # endif
863 #endif
864 
865 /*
866  * Used for the typeahead buffer: typebuf.
867  */
868 typedef struct
869 {
870     char_u	*tb_buf;	/* buffer for typed characters */
871     char_u	*tb_noremap;	/* mapping flags for characters in tb_buf[] */
872     int		tb_buflen;	/* size of tb_buf[] */
873     int		tb_off;		/* current position in tb_buf[] */
874     int		tb_len;		/* number of valid bytes in tb_buf[] */
875     int		tb_maplen;	/* nr of mapped bytes in tb_buf[] */
876     int		tb_silent;	/* nr of silently mapped bytes in tb_buf[] */
877     int		tb_no_abbr_cnt; /* nr of bytes without abbrev. in tb_buf[] */
878     int		tb_change_cnt;	/* nr of time tb_buf was changed; never zero */
879 } typebuf_T;
880 
881 /* Struct to hold the saved typeahead for save_typeahead(). */
882 typedef struct
883 {
884     typebuf_T		save_typebuf;
885     int			typebuf_valid;	    /* TRUE when save_typebuf valid */
886     int			old_char;
887     int			old_mod_mask;
888     struct buffheader	save_stuffbuff;
889 #ifdef USE_INPUT_BUF
890     char_u		*save_inputbuf;
891 #endif
892 } tasave_T;
893 
894 /*
895  * Used for conversion of terminal I/O and script files.
896  */
897 typedef struct
898 {
899     int		vc_type;	/* zero or one of the CONV_ values */
900     int		vc_factor;	/* max. expansion factor */
901 # ifdef WIN3264
902     int		vc_cpfrom;	/* codepage to convert from (CONV_CODEPAGE) */
903     int		vc_cpto;	/* codepage to convert to (CONV_CODEPAGE) */
904 # endif
905 # ifdef USE_ICONV
906     iconv_t	vc_fd;		/* for CONV_ICONV */
907 # endif
908     int		vc_fail;	/* fail for invalid char, don't use '?' */
909 } vimconv_T;
910 
911 /*
912  * Structure used for reading from the viminfo file.
913  */
914 typedef struct
915 {
916     char_u	*vir_line;	/* text of the current line */
917     FILE	*vir_fd;	/* file descriptor */
918 #ifdef FEAT_MBYTE
919     vimconv_T	vir_conv;	/* encoding conversion */
920 #endif
921 } vir_T;
922 
923 #define CONV_NONE		0
924 #define CONV_TO_UTF8		1
925 #define CONV_9_TO_UTF8		2
926 #define CONV_TO_LATIN1		3
927 #define CONV_TO_LATIN9		4
928 #define CONV_ICONV		5
929 #ifdef WIN3264
930 # define CONV_CODEPAGE		10	/* codepage -> codepage */
931 #endif
932 #ifdef MACOS_X
933 # define CONV_MAC_LATIN1	20
934 # define CONV_LATIN1_MAC	21
935 # define CONV_MAC_UTF8		22
936 # define CONV_UTF8_MAC		23
937 #endif
938 
939 /*
940  * Structure used for mappings and abbreviations.
941  */
942 typedef struct mapblock mapblock_T;
943 struct mapblock
944 {
945     mapblock_T	*m_next;	/* next mapblock in list */
946     char_u	*m_keys;	/* mapped from */
947     int		m_keylen;	/* strlen(m_keys) */
948     char_u	*m_str;		/* mapped to */
949     int		m_mode;		/* valid mode */
950     int		m_noremap;	/* if non-zero no re-mapping for m_str */
951     char	m_silent;	/* <silent> used, don't echo commands */
952 #ifdef FEAT_EVAL
953     char	m_expr;		/* <expr> used, m_str is an expression */
954     scid_T	m_script_ID;	/* ID of script where map was defined */
955 #endif
956 };
957 
958 /*
959  * Used for highlighting in the status line.
960  */
961 struct stl_hlrec
962 {
963     char_u	*start;
964     int		userhl;		/* 0: no HL, 1-9: User HL, < 0 for syn ID */
965 };
966 
967 /* Item for a hashtable.  "hi_key" can be one of three values:
968  * NULL:	   Never been used
969  * HI_KEY_REMOVED: Entry was removed
970  * Otherwise:	   Used item, pointer to the actual key; this usually is
971  *		   inside the item, subtract an offset to locate the item.
972  *		   This reduces the size of hashitem by 1/3.
973  */
974 typedef struct hashitem_S
975 {
976     long_u	hi_hash;	/* cached hash number of hi_key */
977     char_u	*hi_key;
978 } hashitem_T;
979 
980 /* The address of "hash_removed" is used as a magic number for hi_key to
981  * indicate a removed item. */
982 #define HI_KEY_REMOVED &hash_removed
983 #define HASHITEM_EMPTY(hi) ((hi)->hi_key == NULL || (hi)->hi_key == &hash_removed)
984 
985 /* Initial size for a hashtable.  Our items are relatively small and growing
986  * is expensive, thus use 16 as a start.  Must be a power of 2. */
987 #define HT_INIT_SIZE 16
988 
989 typedef struct hashtable_S
990 {
991     long_u	ht_mask;	/* mask used for hash value (nr of items in
992 				 * array is "ht_mask" + 1) */
993     long_u	ht_used;	/* number of items used */
994     long_u	ht_filled;	/* number of items used + removed */
995     int		ht_locked;	/* counter for hash_lock() */
996     int		ht_error;	/* when set growing failed, can't add more
997 				   items before growing works */
998     hashitem_T	*ht_array;	/* points to the array, allocated when it's
999 				   not "ht_smallarray" */
1000     hashitem_T	ht_smallarray[HT_INIT_SIZE];   /* initial array */
1001 } hashtab_T;
1002 
1003 typedef long_u hash_T;		/* Type for hi_hash */
1004 
1005 
1006 #if SIZEOF_INT <= 3		/* use long if int is smaller than 32 bits */
1007 typedef long	varnumber_T;
1008 #else
1009 typedef int	varnumber_T;
1010 #endif
1011 typedef double	float_T;
1012 
1013 typedef struct listvar_S list_T;
1014 typedef struct dictvar_S dict_T;
1015 
1016 /*
1017  * Structure to hold an internal variable without a name.
1018  */
1019 typedef struct
1020 {
1021     char	v_type;	    /* see below: VAR_NUMBER, VAR_STRING, etc. */
1022     char	v_lock;	    /* see below: VAR_LOCKED, VAR_FIXED */
1023     union
1024     {
1025 	varnumber_T	v_number;	/* number value */
1026 #ifdef FEAT_FLOAT
1027 	float_T		v_float;	/* floating number value */
1028 #endif
1029 	char_u		*v_string;	/* string value (can be NULL!) */
1030 	list_T		*v_list;	/* list value (can be NULL!) */
1031 	dict_T		*v_dict;	/* dict value (can be NULL!) */
1032     }		vval;
1033 } typval_T;
1034 
1035 /* Values for "v_type". */
1036 #define VAR_UNKNOWN 0
1037 #define VAR_NUMBER  1	/* "v_number" is used */
1038 #define VAR_STRING  2	/* "v_string" is used */
1039 #define VAR_FUNC    3	/* "v_string" is function name */
1040 #define VAR_LIST    4	/* "v_list" is used */
1041 #define VAR_DICT    5	/* "v_dict" is used */
1042 #define VAR_FLOAT   6	/* "v_float" is used */
1043 
1044 /* Values for "v_lock". */
1045 #define VAR_LOCKED  1	/* locked with lock(), can use unlock() */
1046 #define VAR_FIXED   2	/* locked forever */
1047 
1048 /*
1049  * Structure to hold an item of a list: an internal variable without a name.
1050  */
1051 typedef struct listitem_S listitem_T;
1052 
1053 struct listitem_S
1054 {
1055     listitem_T	*li_next;	/* next item in list */
1056     listitem_T	*li_prev;	/* previous item in list */
1057     typval_T	li_tv;		/* type and value of the variable */
1058 };
1059 
1060 /*
1061  * Struct used by those that are using an item in a list.
1062  */
1063 typedef struct listwatch_S listwatch_T;
1064 
1065 struct listwatch_S
1066 {
1067     listitem_T		*lw_item;	/* item being watched */
1068     listwatch_T		*lw_next;	/* next watcher */
1069 };
1070 
1071 /*
1072  * Structure to hold info about a list.
1073  */
1074 struct listvar_S
1075 {
1076     listitem_T	*lv_first;	/* first item, NULL if none */
1077     listitem_T	*lv_last;	/* last item, NULL if none */
1078     int		lv_refcount;	/* reference count */
1079     int		lv_len;		/* number of items */
1080     listwatch_T	*lv_watch;	/* first watcher, NULL if none */
1081     int		lv_idx;		/* cached index of an item */
1082     listitem_T	*lv_idx_item;	/* when not NULL item at index "lv_idx" */
1083     int		lv_copyID;	/* ID used by deepcopy() */
1084     list_T	*lv_copylist;	/* copied list used by deepcopy() */
1085     char	lv_lock;	/* zero, VAR_LOCKED, VAR_FIXED */
1086     list_T	*lv_used_next;	/* next list in used lists list */
1087     list_T	*lv_used_prev;	/* previous list in used lists list */
1088 };
1089 
1090 /*
1091  * Structure to hold an item of a Dictionary.
1092  * Also used for a variable.
1093  * The key is copied into "di_key" to avoid an extra alloc/free for it.
1094  */
1095 struct dictitem_S
1096 {
1097     typval_T	di_tv;		/* type and value of the variable */
1098     char_u	di_flags;	/* flags (only used for variable) */
1099     char_u	di_key[1];	/* key (actually longer!) */
1100 };
1101 
1102 typedef struct dictitem_S dictitem_T;
1103 
1104 #define DI_FLAGS_RO	1 /* "di_flags" value: read-only variable */
1105 #define DI_FLAGS_RO_SBX 2 /* "di_flags" value: read-only in the sandbox */
1106 #define DI_FLAGS_FIX	4 /* "di_flags" value: fixed variable, not allocated */
1107 #define DI_FLAGS_LOCK	8 /* "di_flags" value: locked variable */
1108 
1109 /*
1110  * Structure to hold info about a Dictionary.
1111  */
1112 struct dictvar_S
1113 {
1114     int		dv_refcount;	/* reference count */
1115     hashtab_T	dv_hashtab;	/* hashtab that refers to the items */
1116     int		dv_copyID;	/* ID used by deepcopy() */
1117     dict_T	*dv_copydict;	/* copied dict used by deepcopy() */
1118     char	dv_lock;	/* zero, VAR_LOCKED, VAR_FIXED */
1119     dict_T	*dv_used_next;	/* next dict in used dicts list */
1120     dict_T	*dv_used_prev;	/* previous dict in used dicts list */
1121 };
1122 
1123 /* values for b_syn_spell: what to do with toplevel text */
1124 #define SYNSPL_DEFAULT	0	/* spell check if @Spell not defined */
1125 #define SYNSPL_TOP	1	/* spell check toplevel text */
1126 #define SYNSPL_NOTOP	2	/* don't spell check toplevel text */
1127 
1128 /* avoid #ifdefs for when b_spell is not available */
1129 #ifdef FEAT_SPELL
1130 # define B_SPELL(buf)  ((buf)->b_spell)
1131 #else
1132 # define B_SPELL(buf)  (0)
1133 #endif
1134 
1135 #ifdef FEAT_QUICKFIX
1136 typedef struct qf_info_S qf_info_T;
1137 #endif
1138 
1139 /*
1140  * buffer: structure that holds information about one file
1141  *
1142  * Several windows can share a single Buffer
1143  * A buffer is unallocated if there is no memfile for it.
1144  * A buffer is new if the associated file has never been loaded yet.
1145  */
1146 
1147 typedef struct file_buffer buf_T;
1148 
1149 struct file_buffer
1150 {
1151     memline_T	b_ml;		/* associated memline (also contains line
1152 				   count) */
1153 
1154     buf_T	*b_next;	/* links in list of buffers */
1155     buf_T	*b_prev;
1156 
1157     int		b_nwindows;	/* nr of windows open on this buffer */
1158 
1159     int		b_flags;	/* various BF_ flags */
1160 
1161     /*
1162      * b_ffname has the full path of the file (NULL for no name).
1163      * b_sfname is the name as the user typed it (or NULL).
1164      * b_fname is the same as b_sfname, unless ":cd" has been done,
1165      *		then it is the same as b_ffname (NULL for no name).
1166      */
1167     char_u	*b_ffname;	/* full path file name */
1168     char_u	*b_sfname;	/* short file name */
1169     char_u	*b_fname;	/* current file name */
1170 
1171 #ifdef UNIX
1172     int		b_dev_valid;	/* TRUE when b_dev has a valid number */
1173     dev_t	b_dev;		/* device number */
1174     ino_t	b_ino;		/* inode number */
1175 #endif
1176 #ifdef FEAT_CW_EDITOR
1177     FSSpec	b_FSSpec;	/* MacOS File Identification */
1178 #endif
1179 #ifdef VMS
1180     char	 b_fab_rfm;	/* Record format    */
1181     char	 b_fab_rat;	/* Record attribute */
1182     unsigned int b_fab_mrs;	/* Max record size  */
1183 #endif
1184 #ifdef FEAT_SNIFF
1185     int		b_sniff;	/* file was loaded through Sniff */
1186 #endif
1187 
1188     int		b_fnum;		/* buffer number for this file. */
1189 
1190     int		b_changed;	/* 'modified': Set to TRUE if something in the
1191 				   file has been changed and not written out. */
1192     int		b_changedtick;	/* incremented for each change, also for undo */
1193 
1194     int		b_saving;	/* Set to TRUE if we are in the middle of
1195 				   saving the buffer. */
1196 
1197     /*
1198      * Changes to a buffer require updating of the display.  To minimize the
1199      * work, remember changes made and update everything at once.
1200      */
1201     int		b_mod_set;	/* TRUE when there are changes since the last
1202 				   time the display was updated */
1203     linenr_T	b_mod_top;	/* topmost lnum that was changed */
1204     linenr_T	b_mod_bot;	/* lnum below last changed line, AFTER the
1205 				   change */
1206     long	b_mod_xlines;	/* number of extra buffer lines inserted;
1207 				   negative when lines were deleted */
1208 
1209     wininfo_T	*b_wininfo;	/* list of last used info for each window */
1210 
1211     long	b_mtime;	/* last change time of original file */
1212     long	b_mtime_read;	/* last change time when reading */
1213     size_t	b_orig_size;	/* size of original file in bytes */
1214     int		b_orig_mode;	/* mode of original file */
1215 
1216     pos_T	b_namedm[NMARKS]; /* current named marks (mark.c) */
1217 
1218 #ifdef FEAT_VISUAL
1219     /* These variables are set when VIsual_active becomes FALSE */
1220     visualinfo_T b_visual;
1221 # ifdef FEAT_EVAL
1222     int		b_visual_mode_eval;  /* b_visual.vi_mode for visualmode() */
1223 # endif
1224 #endif
1225 
1226     pos_T	b_last_cursor;	/* cursor position when last unloading this
1227 				   buffer */
1228     pos_T	b_last_insert;	/* where Insert mode was left */
1229     pos_T	b_last_change;	/* position of last change: '. mark */
1230 
1231 #ifdef FEAT_JUMPLIST
1232     /*
1233      * the changelist contains old change positions
1234      */
1235     pos_T	b_changelist[JUMPLISTSIZE];
1236     int		b_changelistlen;	/* number of active entries */
1237     int		b_new_change;		/* set by u_savecommon() */
1238 #endif
1239 
1240     /*
1241      * Character table, only used in charset.c for 'iskeyword'
1242      * 32 bytes of 8 bits: 1 bit per character 0-255.
1243      */
1244     char_u	b_chartab[32];
1245 
1246 #ifdef FEAT_LOCALMAP
1247     /* Table used for mappings local to a buffer. */
1248     mapblock_T	*(b_maphash[256]);
1249 
1250     /* First abbreviation local to a buffer. */
1251     mapblock_T	*b_first_abbr;
1252 #endif
1253 #ifdef FEAT_USR_CMDS
1254     /* User commands local to the buffer. */
1255     garray_T	b_ucmds;
1256 #endif
1257     /*
1258      * start and end of an operator, also used for '[ and ']
1259      */
1260     pos_T	b_op_start;
1261     pos_T	b_op_end;
1262 
1263 #ifdef FEAT_VIMINFO
1264     int		b_marks_read;	/* Have we read viminfo marks yet? */
1265 #endif
1266 
1267     /*
1268      * The following only used in undo.c.
1269      */
1270     u_header_T	*b_u_oldhead;	/* pointer to oldest header */
1271     u_header_T	*b_u_newhead;	/* pointer to newest header; may not be valid
1272 				   if b_u_curhead is not NULL */
1273     u_header_T	*b_u_curhead;	/* pointer to current header */
1274     int		b_u_numhead;	/* current number of headers */
1275     int		b_u_synced;	/* entry lists are synced */
1276     long	b_u_seq_last;	/* last used undo sequence number */
1277     long	b_u_seq_cur;	/* hu_seq of header below which we are now */
1278     time_t	b_u_seq_time;	/* uh_time of header below which we are now */
1279 
1280     /*
1281      * variables for "U" command in undo.c
1282      */
1283     char_u	*b_u_line_ptr;	/* saved line for "U" command */
1284     linenr_T	b_u_line_lnum;	/* line number of line in u_line */
1285     colnr_T	b_u_line_colnr;	/* optional column number */
1286 
1287     /*
1288      * The following only used in undo.c
1289      */
1290     mblock_T	b_block_head;	/* head of allocated memory block list */
1291     minfo_T	*b_m_search;	/* pointer to chunk before previously
1292 				   allocated/freed chunk */
1293     mblock_T	*b_mb_current;	/* block where m_search points in */
1294 
1295 #ifdef FEAT_INS_EXPAND
1296     int		b_scanned;	/* ^N/^P have scanned this buffer */
1297 #endif
1298 
1299     /* flags for use of ":lmap" and IM control */
1300     long	b_p_iminsert;	/* input mode for insert */
1301     long	b_p_imsearch;	/* input mode for search */
1302 #define B_IMODE_USE_INSERT -1	/*	Use b_p_iminsert value for search */
1303 #define B_IMODE_NONE 0		/*	Input via none */
1304 #define B_IMODE_LMAP 1		/*	Input via langmap */
1305 #ifndef USE_IM_CONTROL
1306 # define B_IMODE_LAST 1
1307 #else
1308 # define B_IMODE_IM 2		/*	Input via input method */
1309 # define B_IMODE_LAST 2
1310 #endif
1311 
1312 #ifdef FEAT_KEYMAP
1313     short	b_kmap_state;	/* using "lmap" mappings */
1314 # define KEYMAP_INIT	1	/* 'keymap' was set, call keymap_init() */
1315 # define KEYMAP_LOADED	2	/* 'keymap' mappings have been loaded */
1316     garray_T	b_kmap_ga;	/* the keymap table */
1317 #endif
1318 
1319     /*
1320      * Options local to a buffer.
1321      * They are here because their value depends on the type of file
1322      * or contents of the file being edited.
1323      */
1324     int		b_p_initialized;	/* set when options initialized */
1325 
1326 #ifdef FEAT_EVAL
1327     int		b_p_scriptID[BV_COUNT];	/* SIDs for buffer-local options */
1328 #endif
1329 
1330     int		b_p_ai;		/* 'autoindent' */
1331     int		b_p_ai_nopaste;	/* b_p_ai saved for paste mode */
1332     int		b_p_ci;		/* 'copyindent' */
1333     int		b_p_bin;	/* 'binary' */
1334 #ifdef FEAT_MBYTE
1335     int		b_p_bomb;	/* 'bomb' */
1336 #endif
1337 #if defined(FEAT_QUICKFIX)
1338     char_u	*b_p_bh;	/* 'bufhidden' */
1339     char_u	*b_p_bt;	/* 'buftype' */
1340 #endif
1341     int		b_p_bl;		/* 'buflisted' */
1342 #ifdef FEAT_CINDENT
1343     int		b_p_cin;	/* 'cindent' */
1344     char_u	*b_p_cino;	/* 'cinoptions' */
1345     char_u	*b_p_cink;	/* 'cinkeys' */
1346 #endif
1347 #if defined(FEAT_CINDENT) || defined(FEAT_SMARTINDENT)
1348     char_u	*b_p_cinw;	/* 'cinwords' */
1349 #endif
1350 #ifdef FEAT_COMMENTS
1351     char_u	*b_p_com;	/* 'comments' */
1352 #endif
1353 #ifdef FEAT_FOLDING
1354     char_u	*b_p_cms;	/* 'commentstring' */
1355 #endif
1356 #ifdef FEAT_INS_EXPAND
1357     char_u	*b_p_cpt;	/* 'complete' */
1358 #endif
1359 #ifdef FEAT_COMPL_FUNC
1360     char_u	*b_p_cfu;	/* 'completefunc' */
1361     char_u	*b_p_ofu;	/* 'omnifunc' */
1362 #endif
1363     int		b_p_eol;	/* 'endofline' */
1364     int		b_p_et;		/* 'expandtab' */
1365     int		b_p_et_nobin;	/* b_p_et saved for binary mode */
1366 #ifdef FEAT_MBYTE
1367     char_u	*b_p_fenc;	/* 'fileencoding' */
1368 #endif
1369     char_u	*b_p_ff;	/* 'fileformat' */
1370 #ifdef FEAT_AUTOCMD
1371     char_u	*b_p_ft;	/* 'filetype' */
1372 #endif
1373     char_u	*b_p_fo;	/* 'formatoptions' */
1374     char_u	*b_p_flp;	/* 'formatlistpat' */
1375     int		b_p_inf;	/* 'infercase' */
1376     char_u	*b_p_isk;	/* 'iskeyword' */
1377 #ifdef FEAT_FIND_ID
1378     char_u	*b_p_def;	/* 'define' local value */
1379     char_u	*b_p_inc;	/* 'include' */
1380 # ifdef FEAT_EVAL
1381     char_u	*b_p_inex;	/* 'includeexpr' */
1382     long_u	b_p_inex_flags;	/* flags for 'includeexpr' */
1383 # endif
1384 #endif
1385 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
1386     char_u	*b_p_inde;	/* 'indentexpr' */
1387     long_u	b_p_inde_flags;	/* flags for 'indentexpr' */
1388     char_u	*b_p_indk;	/* 'indentkeys' */
1389 #endif
1390 #if defined(FEAT_EVAL)
1391     char_u	*b_p_fex;	/* 'formatexpr' */
1392     long_u	b_p_fex_flags;	/* flags for 'formatexpr' */
1393 #endif
1394 #ifdef FEAT_CRYPT
1395     char_u	*b_p_key;	/* 'key' */
1396 #endif
1397     char_u	*b_p_kp;	/* 'keywordprg' */
1398 #ifdef FEAT_LISP
1399     int		b_p_lisp;	/* 'lisp' */
1400 #endif
1401     char_u	*b_p_mps;	/* 'matchpairs' */
1402     int		b_p_ml;		/* 'modeline' */
1403     int		b_p_ml_nobin;	/* b_p_ml saved for binary mode */
1404     int		b_p_ma;		/* 'modifiable' */
1405     char_u	*b_p_nf;	/* 'nrformats' */
1406 #ifdef FEAT_OSFILETYPE
1407     char_u	*b_p_oft;	/* 'osfiletype' */
1408 #endif
1409     int		b_p_pi;		/* 'preserveindent' */
1410 #ifdef FEAT_TEXTOBJ
1411     char_u	*b_p_qe;	/* 'quoteescape' */
1412 #endif
1413     int		b_p_ro;		/* 'readonly' */
1414     long	b_p_sw;		/* 'shiftwidth' */
1415 #ifndef SHORT_FNAME
1416     int		b_p_sn;		/* 'shortname' */
1417 #endif
1418 #ifdef FEAT_SMARTINDENT
1419     int		b_p_si;		/* 'smartindent' */
1420 #endif
1421     long	b_p_sts;	/* 'softtabstop' */
1422     long	b_p_sts_nopaste; /* b_p_sts saved for paste mode */
1423 #ifdef FEAT_SEARCHPATH
1424     char_u	*b_p_sua;	/* 'suffixesadd' */
1425 #endif
1426     int		b_p_swf;	/* 'swapfile' */
1427 #ifdef FEAT_SYN_HL
1428     long	b_p_smc;	/* 'synmaxcol' */
1429     char_u	*b_p_syn;	/* 'syntax' */
1430 #endif
1431 #ifdef FEAT_SPELL
1432     char_u	*b_p_spc;	/* 'spellcapcheck' */
1433     regprog_T	*b_cap_prog;	/* program for 'spellcapcheck' */
1434     char_u	*b_p_spf;	/* 'spellfile' */
1435     char_u	*b_p_spl;	/* 'spelllang' */
1436 #endif
1437     long	b_p_ts;		/* 'tabstop' */
1438     int		b_p_tx;		/* 'textmode' */
1439     long	b_p_tw;		/* 'textwidth' */
1440     long	b_p_tw_nobin;	/* b_p_tw saved for binary mode */
1441     long	b_p_tw_nopaste;	/* b_p_tw saved for paste mode */
1442     long	b_p_wm;		/* 'wrapmargin' */
1443     long	b_p_wm_nobin;	/* b_p_wm saved for binary mode */
1444     long	b_p_wm_nopaste;	/* b_p_wm saved for paste mode */
1445 #ifdef FEAT_KEYMAP
1446     char_u	*b_p_keymap;	/* 'keymap' */
1447 #endif
1448 
1449     /* local values for options which are normally global */
1450 #ifdef FEAT_QUICKFIX
1451     char_u	*b_p_gp;	/* 'grepprg' local value */
1452     char_u	*b_p_mp;	/* 'makeprg' local value */
1453     char_u	*b_p_efm;	/* 'errorformat' local value */
1454 #endif
1455     char_u	*b_p_ep;	/* 'equalprg' local value */
1456     char_u	*b_p_path;	/* 'path' local value */
1457     int		b_p_ar;		/* 'autoread' local value */
1458     char_u	*b_p_tags;	/* 'tags' local value */
1459 #ifdef FEAT_INS_EXPAND
1460     char_u	*b_p_dict;	/* 'dictionary' local value */
1461     char_u	*b_p_tsr;	/* 'thesaurus' local value */
1462 #endif
1463 
1464     /* end of buffer options */
1465 
1466     int		b_start_eol;	/* last line had eol when it was read */
1467     int		b_start_ffc;	/* first char of 'ff' when edit started */
1468 #ifdef FEAT_MBYTE
1469     char_u	*b_start_fenc;	/* 'fileencoding' when edit started or NULL */
1470     int		b_bad_char;	/* "++bad=" argument when edit started or 0 */
1471     int		b_start_bomb;	/* 'bomb' when it was read */
1472 #endif
1473 
1474 #ifdef FEAT_EVAL
1475     dictitem_T	b_bufvar;	/* variable for "b:" Dictionary */
1476     dict_T	b_vars;		/* internal variables, local to buffer */
1477 #endif
1478 
1479 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
1480     char_u	*b_p_bexpr;	/* 'balloonexpr' local value */
1481     long_u	b_p_bexpr_flags;/* flags for 'balloonexpr' */
1482 #endif
1483 
1484     /* When a buffer is created, it starts without a swap file.  b_may_swap is
1485      * then set to indicate that a swap file may be opened later.  It is reset
1486      * if a swap file could not be opened.
1487      */
1488     int		b_may_swap;
1489     int		b_did_warn;	/* Set to 1 if user has been warned on first
1490 				   change of a read-only file */
1491 
1492     /* Two special kinds of buffers:
1493      * help buffer  - used for help files, won't use a swap file.
1494      * spell buffer - used for spell info, never displayed and doesn't have a
1495      *		      file name.
1496      */
1497     int		b_help;		/* TRUE for help file buffer (when set b_p_bt
1498 				   is "help") */
1499 #ifdef FEAT_SPELL
1500     int		b_spell;	/* TRUE for a spell file buffer, most fields
1501 				   are not used!  Use the B_SPELL macro to
1502 				   access b_spell without #ifdef. */
1503 #endif
1504 
1505 #ifndef SHORT_FNAME
1506     int		b_shortname;	/* this file has an 8.3 file name */
1507 #endif
1508 
1509 #ifdef FEAT_MZSCHEME
1510     void	*b_mzscheme_ref; /* The MzScheme reference to this buffer */
1511 #endif
1512 
1513 #ifdef FEAT_PERL
1514     void	*b_perl_private;
1515 #endif
1516 
1517 #ifdef FEAT_PYTHON
1518     void	*b_python_ref;	/* The Python reference to this buffer */
1519 #endif
1520 
1521 #ifdef FEAT_TCL
1522     void	*b_tcl_ref;
1523 #endif
1524 
1525 #ifdef FEAT_RUBY
1526     void	*b_ruby_ref;
1527 #endif
1528 
1529 #ifdef FEAT_SYN_HL
1530     hashtab_T	b_keywtab;		/* syntax keywords hash table */
1531     hashtab_T	b_keywtab_ic;		/* idem, ignore case */
1532     int		b_syn_error;		/* TRUE when error occured in HL */
1533     int		b_syn_ic;		/* ignore case for :syn cmds */
1534     int		b_syn_spell;		/* SYNSPL_ values */
1535     garray_T	b_syn_patterns;		/* table for syntax patterns */
1536     garray_T	b_syn_clusters;		/* table for syntax clusters */
1537     int		b_spell_cluster_id;	/* @Spell cluster ID or 0 */
1538     int		b_nospell_cluster_id;	/* @NoSpell cluster ID or 0 */
1539     int		b_syn_containedin;	/* TRUE when there is an item with a
1540 					   "containedin" argument */
1541     int		b_syn_sync_flags;	/* flags about how to sync */
1542     short	b_syn_sync_id;		/* group to sync on */
1543     long	b_syn_sync_minlines;	/* minimal sync lines offset */
1544     long	b_syn_sync_maxlines;	/* maximal sync lines offset */
1545     long	b_syn_sync_linebreaks;	/* offset for multi-line pattern */
1546     char_u	*b_syn_linecont_pat;	/* line continuation pattern */
1547     regprog_T	*b_syn_linecont_prog;	/* line continuation program */
1548     int		b_syn_linecont_ic;	/* ignore-case flag for above */
1549     int		b_syn_topgrp;		/* for ":syntax include" */
1550 # ifdef FEAT_FOLDING
1551     int		b_syn_folditems;	/* number of patterns with the HL_FOLD
1552 					   flag set */
1553 # endif
1554 /*
1555  * b_sst_array[] contains the state stack for a number of lines, for the start
1556  * of that line (col == 0).  This avoids having to recompute the syntax state
1557  * too often.
1558  * b_sst_array[] is allocated to hold the state for all displayed lines, and
1559  * states for 1 out of about 20 other lines.
1560  * b_sst_array		pointer to an array of synstate_T
1561  * b_sst_len		number of entries in b_sst_array[]
1562  * b_sst_first		pointer to first used entry in b_sst_array[] or NULL
1563  * b_sst_firstfree	pointer to first free entry in b_sst_array[] or NULL
1564  * b_sst_freecount	number of free entries in b_sst_array[]
1565  * b_sst_check_lnum	entries after this lnum need to be checked for
1566  *			validity (MAXLNUM means no check needed)
1567  */
1568     synstate_T	*b_sst_array;
1569     int		b_sst_len;
1570     synstate_T	*b_sst_first;
1571     synstate_T	*b_sst_firstfree;
1572     int		b_sst_freecount;
1573     linenr_T	b_sst_check_lnum;
1574     short_u	b_sst_lasttick;	/* last display tick */
1575 #endif /* FEAT_SYN_HL */
1576 
1577 #ifdef FEAT_SPELL
1578     /* for spell checking */
1579     garray_T	b_langp;	/* list of pointers to slang_T, see spell.c */
1580     char_u	b_spell_ismw[256];/* flags: is midword char */
1581 # ifdef FEAT_MBYTE
1582     char_u	*b_spell_ismw_mb; /* multi-byte midword chars */
1583 # endif
1584 #endif
1585 
1586 #ifdef FEAT_SIGNS
1587     signlist_T	*b_signlist;	/* list of signs to draw */
1588 #endif
1589 
1590 #ifdef FEAT_NETBEANS_INTG
1591     int		b_netbeans_file;    /* TRUE when buffer is owned by NetBeans */
1592     int		b_was_netbeans_file;/* TRUE if b_netbeans_file was once set */
1593 #endif
1594 
1595 };
1596 
1597 
1598 #ifdef FEAT_DIFF
1599 /*
1600  * Stuff for diff mode.
1601  */
1602 # define DB_COUNT 4	/* up to four buffers can be diff'ed */
1603 
1604 /*
1605  * Each diffblock defines where a block of lines starts in each of the buffers
1606  * and how many lines it occupies in that buffer.  When the lines are missing
1607  * in the buffer the df_count[] is zero.  This is all counted in
1608  * buffer lines.
1609  * There is always at least one unchanged line in between the diffs.
1610  * Otherwise it would have been included in the diff above or below it.
1611  * df_lnum[] + df_count[] is the lnum below the change.  When in one buffer
1612  * lines have been inserted, in the other buffer df_lnum[] is the line below
1613  * the insertion and df_count[] is zero.  When appending lines at the end of
1614  * the buffer, df_lnum[] is one beyond the end!
1615  * This is using a linked list, because the number of differences is expected
1616  * to be reasonable small.  The list is sorted on lnum.
1617  */
1618 typedef struct diffblock_S diff_T;
1619 struct diffblock_S
1620 {
1621     diff_T	*df_next;
1622     linenr_T	df_lnum[DB_COUNT];	/* line number in buffer */
1623     linenr_T	df_count[DB_COUNT];	/* nr of inserted/changed lines */
1624 };
1625 #endif
1626 
1627 #define SNAP_HELP_IDX	0
1628 #ifdef FEAT_AUTOCMD
1629 # define SNAP_AUCMD_IDX 1
1630 # define SNAP_COUNT	2
1631 #else
1632 # define SNAP_COUNT	1
1633 #endif
1634 
1635 /*
1636  * Tab pages point to the top frame of each tab page.
1637  * Note: Most values are NOT valid for the current tab page!  Use "curwin",
1638  * "firstwin", etc. for that.  "tp_topframe" is always valid and can be
1639  * compared against "topframe" to find the current tab page.
1640  */
1641 typedef struct tabpage_S tabpage_T;
1642 struct tabpage_S
1643 {
1644     tabpage_T	    *tp_next;	    /* next tabpage or NULL */
1645     frame_T	    *tp_topframe;   /* topframe for the windows */
1646     win_T	    *tp_curwin;	    /* current window in this Tab page */
1647     win_T	    *tp_prevwin;    /* previous window in this Tab page */
1648     win_T	    *tp_firstwin;   /* first window in this Tab page */
1649     win_T	    *tp_lastwin;    /* last window in this Tab page */
1650     long	    tp_old_Rows;    /* Rows when Tab page was left */
1651     long	    tp_old_Columns; /* Columns when Tab page was left */
1652     long	    tp_ch_used;	    /* value of 'cmdheight' when frame size
1653 				       was set */
1654 #ifdef FEAT_GUI
1655     int		    tp_prev_which_scrollbars[3];
1656 				    /* previous value of which_scrollbars */
1657 #endif
1658 #ifdef FEAT_DIFF
1659     diff_T	    *tp_first_diff;
1660     buf_T	    *(tp_diffbuf[DB_COUNT]);
1661     int		    tp_diff_invalid;	/* list of diffs is outdated */
1662 #endif
1663     frame_T	    *(tp_snapshot[SNAP_COUNT]);  /* window layout snapshots */
1664 #ifdef FEAT_EVAL
1665     dictitem_T	    tp_winvar;	    /* variable for "t:" Dictionary */
1666     dict_T	    tp_vars;	    /* internal variables, local to tab page */
1667 #endif
1668 };
1669 
1670 /*
1671  * Structure to cache info for displayed lines in w_lines[].
1672  * Each logical line has one entry.
1673  * The entry tells how the logical line is currently displayed in the window.
1674  * This is updated when displaying the window.
1675  * When the display is changed (e.g., when clearing the screen) w_lines_valid
1676  * is changed to exclude invalid entries.
1677  * When making changes to the buffer, wl_valid is reset to indicate wl_size
1678  * may not reflect what is actually in the buffer.  When wl_valid is FALSE,
1679  * the entries can only be used to count the number of displayed lines used.
1680  * wl_lnum and wl_lastlnum are invalid too.
1681  */
1682 typedef struct w_line
1683 {
1684     linenr_T	wl_lnum;	/* buffer line number for logical line */
1685     short_u	wl_size;	/* height in screen lines */
1686     char	wl_valid;	/* TRUE values are valid for text in buffer */
1687 #ifdef FEAT_FOLDING
1688     char	wl_folded;	/* TRUE when this is a range of folded lines */
1689     linenr_T	wl_lastlnum;	/* last buffer line number for logical line */
1690 #endif
1691 } wline_T;
1692 
1693 /*
1694  * Windows are kept in a tree of frames.  Each frame has a column (FR_COL)
1695  * or row (FR_ROW) layout or is a leaf, which has a window.
1696  */
1697 struct frame_S
1698 {
1699     char	fr_layout;	/* FR_LEAF, FR_COL or FR_ROW */
1700 #ifdef FEAT_VERTSPLIT
1701     int		fr_width;
1702     int		fr_newwidth;	/* new width used in win_equal_rec() */
1703 #endif
1704     int		fr_height;
1705     int		fr_newheight;	/* new height used in win_equal_rec() */
1706     frame_T	*fr_parent;	/* containing frame or NULL */
1707     frame_T	*fr_next;	/* frame right or below in same parent, NULL
1708 				   for first */
1709     frame_T	*fr_prev;	/* frame left or above in same parent, NULL
1710 				   for last */
1711     /* fr_child and fr_win are mutually exclusive */
1712     frame_T	*fr_child;	/* first contained frame */
1713     win_T	*fr_win;	/* window that fills this frame */
1714 };
1715 
1716 #define FR_LEAF	0	/* frame is a leaf */
1717 #define FR_ROW	1	/* frame with a row of windows */
1718 #define FR_COL	2	/* frame with a column of windows */
1719 
1720 /*
1721  * Struct used for highlighting 'hlsearch' matches, matches defined by
1722  * ":match" and matches defined by match functions.
1723  * For 'hlsearch' there is one pattern for all windows.  For ":match" and the
1724  * match functions there is a different pattern for each window.
1725  */
1726 typedef struct
1727 {
1728     regmmatch_T	rm;	/* points to the regexp program; contains last found
1729 			   match (may continue in next line) */
1730     buf_T	*buf;	/* the buffer to search for a match */
1731     linenr_T	lnum;	/* the line to search for a match */
1732     int		attr;	/* attributes to be used for a match */
1733     int		attr_cur; /* attributes currently active in win_line() */
1734     linenr_T	first_lnum;	/* first lnum to search for multi-line pat */
1735     colnr_T	startcol; /* in win_line() points to char where HL starts */
1736     colnr_T	endcol;	 /* in win_line() points to char where HL ends */
1737 #ifdef FEAT_RELTIME
1738     proftime_T	tm;	/* for a time limit */
1739 #endif
1740 } match_T;
1741 
1742 /*
1743  * matchitem_T provides a linked list for storing match items for ":match" and
1744  * the match functions.
1745  */
1746 typedef struct matchitem matchitem_T;
1747 struct matchitem
1748 {
1749     matchitem_T	*next;
1750     int		id;	    /* match ID */
1751     int		priority;   /* match priority */
1752     char_u	*pattern;   /* pattern to highlight */
1753     int		hlg_id;	    /* highlight group ID */
1754     regmmatch_T	match;	    /* regexp program for pattern */
1755     match_T	hl;	    /* struct for doing the actual highlighting */
1756 };
1757 
1758 /*
1759  * Structure which contains all information that belongs to a window
1760  *
1761  * All row numbers are relative to the start of the window, except w_winrow.
1762  */
1763 struct window_S
1764 {
1765     buf_T	*w_buffer;	    /* buffer we are a window into (used
1766 				       often, keep it the first item!) */
1767 
1768 #ifdef FEAT_WINDOWS
1769     win_T	*w_prev;	    /* link to previous window */
1770     win_T	*w_next;	    /* link to next window */
1771 #endif
1772 
1773     frame_T	*w_frame;	    /* frame containing this window */
1774 
1775     pos_T	w_cursor;	    /* cursor position in buffer */
1776 
1777     colnr_T	w_curswant;	    /* The column we'd like to be at.  This is
1778 				       used to try to stay in the same column
1779 				       for up/down cursor motions. */
1780 
1781     int		w_set_curswant;	    /* If set, then update w_curswant the next
1782 				       time through cursupdate() to the
1783 				       current virtual column */
1784 
1785 #ifdef FEAT_VISUAL
1786     /*
1787      * the next six are used to update the visual part
1788      */
1789     char	w_old_visual_mode;  /* last known VIsual_mode */
1790     linenr_T	w_old_cursor_lnum;  /* last known end of visual part */
1791     colnr_T	w_old_cursor_fcol;  /* first column for block visual part */
1792     colnr_T	w_old_cursor_lcol;  /* last column for block visual part */
1793     linenr_T	w_old_visual_lnum;  /* last known start of visual part */
1794     colnr_T	w_old_visual_col;   /* last known start of visual part */
1795     colnr_T	w_old_curswant;	    /* last known value of Curswant */
1796 #endif
1797 
1798     /*
1799      * "w_topline", "w_leftcol" and "w_skipcol" specify the offsets for
1800      * displaying the buffer.
1801      */
1802     linenr_T	w_topline;	    /* buffer line number of the line at the
1803 				       top of the window */
1804 #ifdef FEAT_AUTOCMD
1805     char	w_topline_was_set;  /* flag set to TRUE when topline is set,
1806 				       e.g. by winrestview() */
1807 #endif
1808 #ifdef FEAT_DIFF
1809     int		w_topfill;	    /* number of filler lines above w_topline */
1810     int		w_old_topfill;	    /* w_topfill at last redraw */
1811     int		w_botfill;	    /* TRUE when filler lines are actually
1812 				       below w_topline (at end of file) */
1813     int		w_old_botfill;	    /* w_botfill at last redraw */
1814 #endif
1815     colnr_T	w_leftcol;	    /* window column number of the left most
1816 				       character in the window; used when
1817 				       'wrap' is off */
1818     colnr_T	w_skipcol;	    /* starting column when a single line
1819 				       doesn't fit in the window */
1820 
1821     /*
1822      * Layout of the window in the screen.
1823      * May need to add "msg_scrolled" to "w_winrow" in rare situations.
1824      */
1825 #ifdef FEAT_WINDOWS
1826     int		w_winrow;	    /* first row of window in screen */
1827 #endif
1828     int		w_height;	    /* number of rows in window, excluding
1829 				       status/command line(s) */
1830 #ifdef FEAT_WINDOWS
1831     int		w_status_height;    /* number of status lines (0 or 1) */
1832 #endif
1833 #ifdef FEAT_VERTSPLIT
1834     int		w_wincol;	    /* Leftmost column of window in screen.
1835 				       use W_WINCOL() */
1836     int		w_width;	    /* Width of window, excluding separation.
1837 				       use W_WIDTH() */
1838     int		w_vsep_width;	    /* Number of separator columns (0 or 1).
1839 				       use W_VSEP_WIDTH() */
1840 #endif
1841 
1842     /*
1843      * === start of cached values ====
1844      */
1845     /*
1846      * Recomputing is minimized by storing the result of computations.
1847      * Use functions in screen.c to check if they are valid and to update.
1848      * w_valid is a bitfield of flags, which indicate if specific values are
1849      * valid or need to be recomputed.	See screen.c for values.
1850      */
1851     int		w_valid;
1852     pos_T	w_valid_cursor;	    /* last known position of w_cursor, used
1853 				       to adjust w_valid */
1854     colnr_T	w_valid_leftcol;    /* last known w_leftcol */
1855 
1856     /*
1857      * w_cline_height is the number of physical lines taken by the buffer line
1858      * that the cursor is on.  We use this to avoid extra calls to plines().
1859      */
1860     int		w_cline_height;	    /* current size of cursor line */
1861 #ifdef FEAT_FOLDING
1862     int		w_cline_folded;	    /* cursor line is folded */
1863 #endif
1864 
1865     int		w_cline_row;	    /* starting row of the cursor line */
1866 
1867     colnr_T	w_virtcol;	    /* column number of the cursor in the
1868 				       buffer line, as opposed to the column
1869 				       number we're at on the screen.  This
1870 				       makes a difference on lines which span
1871 				       more than one screen line or when
1872 				       w_leftcol is non-zero */
1873 
1874     /*
1875      * w_wrow and w_wcol specify the cursor position in the window.
1876      * This is related to positions in the window, not in the display or
1877      * buffer, thus w_wrow is relative to w_winrow.
1878      */
1879     int		w_wrow, w_wcol;	    /* cursor position in window */
1880 
1881     linenr_T	w_botline;	    /* number of the line below the bottom of
1882 				       the screen */
1883     int		w_empty_rows;	    /* number of ~ rows in window */
1884 #ifdef FEAT_DIFF
1885     int		w_filler_rows;	    /* number of filler rows at the end of the
1886 				       window */
1887 #endif
1888 
1889     /*
1890      * Info about the lines currently in the window is remembered to avoid
1891      * recomputing it every time.  The allocated size of w_lines[] is Rows.
1892      * Only the w_lines_valid entries are actually valid.
1893      * When the display is up-to-date w_lines[0].wl_lnum is equal to w_topline
1894      * and w_lines[w_lines_valid - 1].wl_lnum is equal to w_botline.
1895      * Between changing text and updating the display w_lines[] represents
1896      * what is currently displayed.  wl_valid is reset to indicated this.
1897      * This is used for efficient redrawing.
1898      */
1899     int		w_lines_valid;	    /* number of valid entries */
1900     wline_T	*w_lines;
1901 
1902 #ifdef FEAT_FOLDING
1903     garray_T	w_folds;	    /* array of nested folds */
1904     char	w_fold_manual;	    /* when TRUE: some folds are opened/closed
1905 				       manually */
1906     char	w_foldinvalid;	    /* when TRUE: folding needs to be
1907 				       recomputed */
1908 #endif
1909 #ifdef FEAT_LINEBREAK
1910     int		w_nrwidth;	    /* width of 'number' column being used */
1911 #endif
1912 
1913     /*
1914      * === end of cached values ===
1915      */
1916 
1917     int		w_redr_type;	    /* type of redraw to be performed on win */
1918     int		w_upd_rows;	    /* number of window lines to update when
1919 				       w_redr_type is REDRAW_TOP */
1920     linenr_T	w_redraw_top;	    /* when != 0: first line needing redraw */
1921     linenr_T	w_redraw_bot;	    /* when != 0: last line needing redraw */
1922 #ifdef FEAT_WINDOWS
1923     int		w_redr_status;	    /* if TRUE status line must be redrawn */
1924 #endif
1925 
1926 #ifdef FEAT_CMDL_INFO
1927     /* remember what is shown in the ruler for this window (if 'ruler' set) */
1928     pos_T	w_ru_cursor;	    /* cursor position shown in ruler */
1929     colnr_T	w_ru_virtcol;	    /* virtcol shown in ruler */
1930     linenr_T	w_ru_topline;	    /* topline shown in ruler */
1931     linenr_T	w_ru_line_count;    /* line count used for ruler */
1932 # ifdef FEAT_DIFF
1933     int		w_ru_topfill;	    /* topfill shown in ruler */
1934 # endif
1935     char	w_ru_empty;	    /* TRUE if ruler shows 0-1 (empty line) */
1936 #endif
1937 
1938     int		w_alt_fnum;	    /* alternate file (for # and CTRL-^) */
1939 
1940 #ifdef FEAT_WINDOWS
1941     alist_T	*w_alist;	    /* pointer to arglist for this window */
1942 #endif
1943     int		w_arg_idx;	    /* current index in argument list (can be
1944 				       out of range!) */
1945     int		w_arg_idx_invalid;  /* editing another file than w_arg_idx */
1946 
1947     char_u	*w_localdir;	    /* absolute path of local directory or
1948 				       NULL */
1949     /*
1950      * Options local to a window.
1951      * They are local because they influence the layout of the window or
1952      * depend on the window layout.
1953      * There are two values: w_onebuf_opt is local to the buffer currently in
1954      * this window, w_allbuf_opt is for all buffers in this window.
1955      */
1956     winopt_T	w_onebuf_opt;
1957     winopt_T	w_allbuf_opt;
1958 
1959     /* A few options have local flags for P_INSECURE. */
1960 #ifdef FEAT_STL_OPT
1961     long_u	w_p_stl_flags;	    /* flags for 'statusline' */
1962 #endif
1963 #ifdef FEAT_EVAL
1964     long_u	w_p_fde_flags;	    /* flags for 'foldexpr' */
1965     long_u	w_p_fdt_flags;	    /* flags for 'foldtext' */
1966 #endif
1967 
1968     /* transform a pointer to a "onebuf" option into a "allbuf" option */
1969 #define GLOBAL_WO(p)	((char *)p + sizeof(winopt_T))
1970 
1971 #ifdef FEAT_SCROLLBIND
1972     long	w_scbind_pos;
1973 #endif
1974 
1975 #ifdef FEAT_EVAL
1976     dictitem_T	w_winvar;	/* variable for "w:" Dictionary */
1977     dict_T	w_vars;		/* internal variables, local to window */
1978 #endif
1979 
1980 #if defined(FEAT_RIGHTLEFT) && defined(FEAT_FKMAP)
1981     int		w_farsi;	/* for the window dependent Farsi functions */
1982 #endif
1983 
1984     /*
1985      * The w_prev_pcmark field is used to check whether we really did jump to
1986      * a new line after setting the w_pcmark.  If not, then we revert to
1987      * using the previous w_pcmark.
1988      */
1989     pos_T	w_pcmark;	/* previous context mark */
1990     pos_T	w_prev_pcmark;	/* previous w_pcmark */
1991 
1992 #ifdef FEAT_JUMPLIST
1993     /*
1994      * the jumplist contains old cursor positions
1995      */
1996     xfmark_T	w_jumplist[JUMPLISTSIZE];
1997     int		w_jumplistlen;		/* number of active entries */
1998     int		w_jumplistidx;		/* current position */
1999 
2000     int		w_changelistidx;	/* current position in b_changelist */
2001 #endif
2002 
2003 #ifdef FEAT_SEARCH_EXTRA
2004     matchitem_T	*w_match_head;		/* head of match list */
2005     int		w_next_match_id;	/* next match ID */
2006 #endif
2007 
2008     /*
2009      * the tagstack grows from 0 upwards:
2010      * entry 0: older
2011      * entry 1: newer
2012      * entry 2: newest
2013      */
2014     taggy_T	w_tagstack[TAGSTACKSIZE];	/* the tag stack */
2015     int		w_tagstackidx;		/* idx just below active entry */
2016     int		w_tagstacklen;		/* number of tags on stack */
2017 
2018     /*
2019      * w_fraction is the fractional row of the cursor within the window, from
2020      * 0 at the top row to FRACTION_MULT at the last row.
2021      * w_prev_fraction_row was the actual cursor row when w_fraction was last
2022      * calculated.
2023      */
2024     int		w_fraction;
2025     int		w_prev_fraction_row;
2026 
2027 #ifdef FEAT_GUI
2028     scrollbar_T	w_scrollbars[2];	/* vert. Scrollbars for this window */
2029 #endif
2030 #ifdef FEAT_LINEBREAK
2031     linenr_T	w_nrwidth_line_count;	/* line count when ml_nrwidth_width
2032 					 * was computed. */
2033     int		w_nrwidth_width;	/* nr of chars to print line count. */
2034 #endif
2035 
2036 #ifdef FEAT_QUICKFIX
2037     qf_info_T	*w_llist;		/* Location list for this window */
2038     /*
2039      * Location list reference used in the location list window.
2040      * In a non-location list window, w_llist_ref is NULL.
2041      */
2042     qf_info_T	*w_llist_ref;
2043 #endif
2044 
2045 
2046 #ifdef FEAT_MZSCHEME
2047     void	*w_mzscheme_ref;	/* The MzScheme value for this window */
2048 #endif
2049 
2050 #ifdef FEAT_PERL
2051     void	*w_perl_private;
2052 #endif
2053 
2054 #ifdef FEAT_PYTHON
2055     void	*w_python_ref;		/* The Python value for this window */
2056 #endif
2057 
2058 #ifdef FEAT_TCL
2059     void	*w_tcl_ref;
2060 #endif
2061 
2062 #ifdef FEAT_RUBY
2063     void	*w_ruby_ref;
2064 #endif
2065 };
2066 
2067 /*
2068  * Arguments for operators.
2069  */
2070 typedef struct oparg_S
2071 {
2072     int		op_type;	/* current pending operator type */
2073     int		regname;	/* register to use for the operator */
2074     int		motion_type;	/* type of the current cursor motion */
2075     int		motion_force;	/* force motion type: 'v', 'V' or CTRL-V */
2076     int		use_reg_one;	/* TRUE if delete uses reg 1 even when not
2077 				   linewise */
2078     int		inclusive;	/* TRUE if char motion is inclusive (only
2079 				   valid when motion_type is MCHAR */
2080     int		end_adjusted;	/* backuped b_op_end one char (only used by
2081 				   do_format()) */
2082     pos_T	start;		/* start of the operator */
2083     pos_T	end;		/* end of the operator */
2084     pos_T	cursor_start;	/* cursor position before motion for "gw" */
2085 
2086     long	line_count;	/* number of lines from op_start to op_end
2087 				   (inclusive) */
2088     int		empty;		/* op_start and op_end the same (only used by
2089 				   do_change()) */
2090 #ifdef FEAT_VISUAL
2091     int		is_VIsual;	/* operator on Visual area */
2092     int		block_mode;	/* current operator is Visual block mode */
2093 #endif
2094     colnr_T	start_vcol;	/* start col for block mode operator */
2095     colnr_T	end_vcol;	/* end col for block mode operator */
2096 #ifdef FEAT_AUTOCMD
2097     long	prev_opcount;	/* ca.opcount saved for K_CURSORHOLD */
2098     long	prev_count0;	/* ca.count0 saved for K_CURSORHOLD */
2099 #endif
2100 } oparg_T;
2101 
2102 /*
2103  * Arguments for Normal mode commands.
2104  */
2105 typedef struct cmdarg_S
2106 {
2107     oparg_T	*oap;		/* Operator arguments */
2108     int		prechar;	/* prefix character (optional, always 'g') */
2109     int		cmdchar;	/* command character */
2110     int		nchar;		/* next command character (optional) */
2111 #ifdef FEAT_MBYTE
2112     int		ncharC1;	/* first composing character (optional) */
2113     int		ncharC2;	/* second composing character (optional) */
2114 #endif
2115     int		extra_char;	/* yet another character (optional) */
2116     long	opcount;	/* count before an operator */
2117     long	count0;		/* count before command, default 0 */
2118     long	count1;		/* count before command, default 1 */
2119     int		arg;		/* extra argument from nv_cmds[] */
2120     int		retval;		/* return: CA_* values */
2121     char_u	*searchbuf;	/* return: pointer to search pattern or NULL */
2122 } cmdarg_T;
2123 
2124 /* values for retval: */
2125 #define CA_COMMAND_BUSY	    1	/* skip restarting edit() once */
2126 #define CA_NO_ADJ_OP_END    2	/* don't adjust operator end */
2127 
2128 #ifdef CURSOR_SHAPE
2129 /*
2130  * struct to store values from 'guicursor' and 'mouseshape'
2131  */
2132 /* Indexes in shape_table[] */
2133 #define SHAPE_IDX_N	0	/* Normal mode */
2134 #define SHAPE_IDX_V	1	/* Visual mode */
2135 #define SHAPE_IDX_I	2	/* Insert mode */
2136 #define SHAPE_IDX_R	3	/* Replace mode */
2137 #define SHAPE_IDX_C	4	/* Command line Normal mode */
2138 #define SHAPE_IDX_CI	5	/* Command line Insert mode */
2139 #define SHAPE_IDX_CR	6	/* Command line Replace mode */
2140 #define SHAPE_IDX_O	7	/* Operator-pending mode */
2141 #define SHAPE_IDX_VE	8	/* Visual mode with 'seleciton' exclusive */
2142 #define SHAPE_IDX_CLINE	9	/* On command line */
2143 #define SHAPE_IDX_STATUS 10	/* A status line */
2144 #define SHAPE_IDX_SDRAG 11	/* dragging a status line */
2145 #define SHAPE_IDX_VSEP	12	/* A vertical separator line */
2146 #define SHAPE_IDX_VDRAG 13	/* dragging a vertical separator line */
2147 #define SHAPE_IDX_MORE	14	/* Hit-return or More */
2148 #define SHAPE_IDX_MOREL	15	/* Hit-return or More in last line */
2149 #define SHAPE_IDX_SM	16	/* showing matching paren */
2150 #define SHAPE_IDX_COUNT	17
2151 
2152 #define SHAPE_BLOCK	0	/* block cursor */
2153 #define SHAPE_HOR	1	/* horizontal bar cursor */
2154 #define SHAPE_VER	2	/* vertical bar cursor */
2155 
2156 #define MSHAPE_NUMBERED	1000	/* offset for shapes identified by number */
2157 #define MSHAPE_HIDE	1	/* hide mouse pointer */
2158 
2159 #define SHAPE_MOUSE	1	/* used for mouse pointer shape */
2160 #define SHAPE_CURSOR	2	/* used for text cursor shape */
2161 
2162 typedef struct cursor_entry
2163 {
2164     int		shape;		/* one of the SHAPE_ defines */
2165     int		mshape;		/* one of the MSHAPE defines */
2166     int		percentage;	/* percentage of cell for bar */
2167     long	blinkwait;	/* blinking, wait time before blinking starts */
2168     long	blinkon;	/* blinking, on time */
2169     long	blinkoff;	/* blinking, off time */
2170     int		id;		/* highlight group ID */
2171     int		id_lm;		/* highlight group ID for :lmap mode */
2172     char	*name;		/* mode name (fixed) */
2173     char	used_for;	/* SHAPE_MOUSE and/or SHAPE_CURSOR */
2174 } cursorentry_T;
2175 #endif /* CURSOR_SHAPE */
2176 
2177 #ifdef FEAT_MENU
2178 
2179 /* Indices into vimmenu_T->strings[] and vimmenu_T->noremap[] for each mode */
2180 #define MENU_INDEX_INVALID	-1
2181 #define MENU_INDEX_NORMAL	0
2182 #define MENU_INDEX_VISUAL	1
2183 #define MENU_INDEX_SELECT	2
2184 #define MENU_INDEX_OP_PENDING	3
2185 #define MENU_INDEX_INSERT	4
2186 #define MENU_INDEX_CMDLINE	5
2187 #define MENU_INDEX_TIP		6
2188 #define MENU_MODES		7
2189 
2190 /* Menu modes */
2191 #define MENU_NORMAL_MODE	(1 << MENU_INDEX_NORMAL)
2192 #define MENU_VISUAL_MODE	(1 << MENU_INDEX_VISUAL)
2193 #define MENU_SELECT_MODE	(1 << MENU_INDEX_SELECT)
2194 #define MENU_OP_PENDING_MODE	(1 << MENU_INDEX_OP_PENDING)
2195 #define MENU_INSERT_MODE	(1 << MENU_INDEX_INSERT)
2196 #define MENU_CMDLINE_MODE	(1 << MENU_INDEX_CMDLINE)
2197 #define MENU_TIP_MODE		(1 << MENU_INDEX_TIP)
2198 #define MENU_ALL_MODES		((1 << MENU_INDEX_TIP) - 1)
2199 /*note MENU_INDEX_TIP is not a 'real' mode*/
2200 
2201 /* Start a menu name with this to not include it on the main menu bar */
2202 #define MNU_HIDDEN_CHAR		']'
2203 
2204 typedef struct VimMenu vimmenu_T;
2205 
2206 struct VimMenu
2207 {
2208     int		modes;		    /* Which modes is this menu visible for? */
2209     int		enabled;	    /* for which modes the menu is enabled */
2210     char_u	*name;		    /* Name of menu, possibly translated */
2211     char_u	*dname;		    /* Displayed Name ("name" without '&') */
2212 #ifdef FEAT_MULTI_LANG
2213     char_u	*en_name;	    /* "name" untranslated, NULL when "name"
2214 				     * was not translated */
2215     char_u	*en_dname;	    /* "dname" untranslated, NULL when "dname"
2216 				     * was not translated */
2217 #endif
2218     int		mnemonic;	    /* mnemonic key (after '&') */
2219     char_u	*actext;	    /* accelerator text (after TAB) */
2220     int		priority;	    /* Menu order priority */
2221 #ifdef FEAT_GUI
2222     void	(*cb) __ARGS((vimmenu_T *));	    /* Call-back routine */
2223 #endif
2224 #ifdef FEAT_TOOLBAR
2225     char_u	*iconfile;	    /* name of file for icon or NULL */
2226     int		iconidx;	    /* icon index (-1 if not set) */
2227     int		icon_builtin;	    /* icon names is BuiltIn{nr} */
2228 #endif
2229     char_u	*strings[MENU_MODES]; /* Mapped string for each mode */
2230     int		noremap[MENU_MODES]; /* A REMAP_ flag for each mode */
2231     char	silent[MENU_MODES]; /* A silent flag for each mode */
2232     vimmenu_T	*children;	    /* Children of sub-menu */
2233     vimmenu_T	*parent;	    /* Parent of menu */
2234     vimmenu_T	*next;		    /* Next item in menu */
2235 #ifdef FEAT_GUI_X11
2236     Widget	id;		    /* Manage this to enable item */
2237     Widget	submenu_id;	    /* If this is submenu, add children here */
2238 #endif
2239 #ifdef FEAT_GUI_GTK
2240     GtkWidget	*id;		    /* Manage this to enable item */
2241     GtkWidget	*submenu_id;	    /* If this is submenu, add children here */
2242     GtkWidget	*tearoff_handle;
2243     GtkWidget   *label;		    /* Used by "set wak=" code. */
2244 #endif
2245 #ifdef FEAT_GUI_MOTIF
2246     int		sensitive;	    /* turn button on/off */
2247     char	**xpm;		    /* pixmap data */
2248     char	*xpm_fname;	    /* file with pixmap data */
2249 #endif
2250 #ifdef FEAT_GUI_ATHENA
2251     Pixmap	image;		    /* Toolbar image */
2252 #endif
2253 #ifdef FEAT_BEVAL_TIP
2254     BalloonEval *tip;		    /* tooltip for this menu item */
2255 #endif
2256 #ifdef FEAT_GUI_W16
2257     UINT	id;		    /* Id of menu item */
2258     HMENU	submenu_id;	    /* If this is submenu, add children here */
2259 #endif
2260 #ifdef FEAT_GUI_W32
2261     UINT	id;		    /* Id of menu item */
2262     HMENU	submenu_id;	    /* If this is submenu, add children here */
2263     HWND	tearoff_handle;	    /* hWnd of tearoff if created */
2264 #endif
2265 #ifdef FEAT_GUI_MAC
2266 /*  MenuHandle	id; */
2267 /*  short	index;	*/	    /* the item index within the father menu */
2268     short	menu_id;	    /* the menu id to which this item belong */
2269     short	submenu_id;	    /* the menu id of the children (could be
2270 				       get throught some tricks) */
2271     MenuHandle	menu_handle;
2272     MenuHandle	submenu_handle;
2273 #endif
2274 #ifdef RISCOS
2275     int		*id;		    /* Not used, but gui.c needs it */
2276     int		greyed_out;	    /* Flag */
2277     int		hidden;
2278 #endif
2279 #ifdef FEAT_GUI_PHOTON
2280     PtWidget_t	*id;
2281     PtWidget_t	*submenu_id;
2282 #endif
2283 };
2284 #else
2285 /* For generating prototypes when FEAT_MENU isn't defined. */
2286 typedef int vimmenu_T;
2287 
2288 #endif /* FEAT_MENU */
2289 
2290 /*
2291  * Struct to save values in before executing autocommands for a buffer that is
2292  * not the current buffer.  Without FEAT_AUTOCMD only "curbuf" is remembered.
2293  */
2294 typedef struct
2295 {
2296     buf_T	*save_curbuf;	/* saved curbuf */
2297 #ifdef FEAT_AUTOCMD
2298     int		use_aucmd_win;	/* using aucmd_win */
2299     win_T	*save_curwin;	/* saved curwin */
2300     win_T	*new_curwin;	/* new curwin */
2301     buf_T	*new_curbuf;	/* new curbuf */
2302     char_u	*globaldir;	/* saved value of globaldir */
2303 #endif
2304 } aco_save_T;
2305 
2306 /*
2307  * Generic option table item, only used for printer at the moment.
2308  */
2309 typedef struct
2310 {
2311     const char	*name;
2312     int		hasnum;
2313     long	number;
2314     char_u	*string;	/* points into option string */
2315     int		strlen;
2316     int		present;
2317 } option_table_T;
2318 
2319 /*
2320  * Structure to hold printing color and font attributes.
2321  */
2322 typedef struct
2323 {
2324     long_u	fg_color;
2325     long_u	bg_color;
2326     int		bold;
2327     int		italic;
2328     int		underline;
2329     int		undercurl;
2330 } prt_text_attr_T;
2331 
2332 /*
2333  * Structure passed back to the generic printer code.
2334  */
2335 typedef struct
2336 {
2337     int		n_collated_copies;
2338     int		n_uncollated_copies;
2339     int		duplex;
2340     int		chars_per_line;
2341     int		lines_per_page;
2342     int		has_color;
2343     prt_text_attr_T number;
2344 #ifdef FEAT_SYN_HL
2345     int		modec;
2346     int		do_syntax;
2347 #endif
2348     int		user_abort;
2349     char_u	*jobname;
2350 #ifdef FEAT_POSTSCRIPT
2351     char_u	*outfile;
2352     char_u	*arguments;
2353 #endif
2354 } prt_settings_T;
2355 
2356 #define PRINT_NUMBER_WIDTH 8
2357 
2358 /*
2359  * Used for popup menu items.
2360  */
2361 typedef struct
2362 {
2363     char_u	*pum_text;	/* main menu text */
2364     char_u	*pum_kind;	/* extra kind text (may be truncated) */
2365     char_u	*pum_extra;	/* extra menu text (may be truncated) */
2366     char_u	*pum_info;	/* extra info */
2367 } pumitem_T;
2368 
2369 /*
2370  * Structure used for get_tagfname().
2371  */
2372 typedef struct
2373 {
2374     char_u	*tn_tags;	/* value of 'tags' when starting */
2375     char_u	*tn_np;		/* current position in tn_tags */
2376     int		tn_did_filefind_init;
2377     int		tn_hf_idx;
2378     void	*tn_search_ctx;
2379 } tagname_T;
2380 
2381 /*
2382  * Array indexes used for cptext argument of ins_compl_add().
2383  */
2384 #define CPT_ABBR    0	/* "abbr" */
2385 #define CPT_MENU    1	/* "menu" */
2386 #define CPT_KIND    2	/* "kind" */
2387 #define CPT_INFO    3	/* "info" */
2388 #define CPT_COUNT   4	/* Number of entries */
2389