xref: /vim-8.2.3635/src/structs.h (revision 94688b8a)
1 /* vi:set ts=8 sts=4 sw=4 noet:
2  *
3  * VIM - Vi IMproved	by Bram Moolenaar
4  *
5  * Do ":help uganda"  in Vim to read copying and usage conditions.
6  * Do ":help credits" in Vim to see a list of people who contributed.
7  */
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     colnr_T	coladd; // extra virtual column
31 } pos_T;
32 
33 
34 /*
35  * Same, but without coladd.
36  */
37 typedef struct
38 {
39     linenr_T	lnum;	// line number
40     colnr_T	col;	// column number
41 } lpos_T;
42 
43 /*
44  * Structure used for growing arrays.
45  * This is used to store information that only grows, is deleted all at
46  * once, and needs to be accessed by index.  See ga_clear() and ga_grow().
47  */
48 typedef struct growarray
49 {
50     int	    ga_len;		    /* current number of items used */
51     int	    ga_maxlen;		    /* maximum number of items possible */
52     int	    ga_itemsize;	    /* sizeof(item) */
53     int	    ga_growsize;	    /* number of items to grow each time */
54     void    *ga_data;		    /* pointer to the first item */
55 } garray_T;
56 
57 #define GA_EMPTY    {0, 0, 0, 0, NULL}
58 
59 typedef struct window_S		win_T;
60 typedef struct wininfo_S	wininfo_T;
61 typedef struct frame_S		frame_T;
62 typedef int			scid_T;		/* script ID */
63 typedef struct file_buffer	buf_T;  /* forward declaration */
64 typedef struct terminal_S	term_T;
65 
66 #ifdef FEAT_MENU
67 typedef struct VimMenu vimmenu_T;
68 #endif
69 
70 /*
71  * SCript ConteXt (SCTX): identifies a script script line.
72  * When sourcing a script "sc_lnum" is zero, "sourcing_lnum" is the current
73  * line number. When executing a user function "sc_lnum" is the line where the
74  * function was defined, "sourcing_lnum" is the line number inside the
75  * function.  When stored with a function, mapping, option, etc. "sc_lnum" is
76  * the line number in the script "sc_sid".
77  */
78 typedef struct {
79     scid_T	sc_sid;		// script ID
80     int		sc_seq;		// sourcing sequence number
81     linenr_T	sc_lnum;	// line number
82 } sctx_T;
83 
84 /*
85  * Reference to a buffer that stores the value of buf_free_count.
86  * bufref_valid() only needs to check "buf" when the count differs.
87  */
88 typedef struct {
89     buf_T   *br_buf;
90     int	    br_fnum;
91     int	    br_buf_free_count;
92 } bufref_T;
93 
94 /*
95  * This is here because regexp.h needs pos_T and below regprog_T is used.
96  */
97 #include "regexp.h"
98 
99 /*
100  * This is here because gui.h needs the pos_T and win_T, and win_T needs gui.h
101  * for scrollbar_T.
102  */
103 #ifdef FEAT_GUI
104 # include "gui.h"
105 #else
106 # ifdef FEAT_XCLIPBOARD
107 #  include <X11/Intrinsic.h>
108 # endif
109 # define guicolor_T long
110 # define INVALCOLOR ((guicolor_T)0x1ffffff)
111     /* only used for cterm.bg_rgb and cterm.fg_rgb: use cterm color */
112 # define CTERMCOLOR ((guicolor_T)0x1fffffe)
113 #endif
114 #define COLOR_INVALID(x) ((x) == INVALCOLOR || (x) == CTERMCOLOR)
115 
116 /*
117  * marks: positions in a file
118  * (a normal mark is a lnum/col pair, the same as a file position)
119  */
120 
121 /* (Note: for EBCDIC there are more than 26, because there are gaps in the
122  * alphabet coding.  To minimize changes to the code, I decided to just
123  * increase the number of possible marks. */
124 #define NMARKS		('z' - 'a' + 1)	/* max. # of named marks */
125 #define JUMPLISTSIZE	100		/* max. # of marks in jump list */
126 #define TAGSTACKSIZE	20		/* max. # of tags in tag stack */
127 
128 typedef struct filemark
129 {
130     pos_T	mark;		/* cursor position */
131     int		fnum;		/* file number */
132 } fmark_T;
133 
134 /* Xtended file mark: also has a file name */
135 typedef struct xfilemark
136 {
137     fmark_T	fmark;
138     char_u	*fname;		/* file name, used when fnum == 0 */
139 #ifdef FEAT_VIMINFO
140     time_T	time_set;
141 #endif
142 } xfmark_T;
143 
144 /*
145  * The taggy struct is used to store the information about a :tag command.
146  */
147 typedef struct taggy
148 {
149     char_u	*tagname;	/* tag name */
150     fmark_T	fmark;		/* cursor position BEFORE ":tag" */
151     int		cur_match;	/* match number */
152     int		cur_fnum;	/* buffer number used for cur_match */
153 } taggy_T;
154 
155 /*
156  * Structure that contains all options that are local to a window.
157  * Used twice in a window: for the current buffer and for all buffers.
158  * Also used in wininfo_T.
159  */
160 typedef struct
161 {
162 #ifdef FEAT_ARABIC
163     int		wo_arab;
164 # define w_p_arab w_onebuf_opt.wo_arab	/* 'arabic' */
165 #endif
166 #ifdef FEAT_LINEBREAK
167     int		wo_bri;
168 # define w_p_bri w_onebuf_opt.wo_bri	/* 'breakindent' */
169     char_u	*wo_briopt;
170 # define w_p_briopt w_onebuf_opt.wo_briopt /* 'breakindentopt' */
171 #endif
172 #ifdef FEAT_DIFF
173     int		wo_diff;
174 # define w_p_diff w_onebuf_opt.wo_diff	/* 'diff' */
175 #endif
176 #ifdef FEAT_FOLDING
177     long	wo_fdc;
178 # define w_p_fdc w_onebuf_opt.wo_fdc	/* 'foldcolumn' */
179     int		wo_fdc_save;
180 # define w_p_fdc_save w_onebuf_opt.wo_fdc_save	/* 'foldenable' saved for diff mode */
181     int		wo_fen;
182 # define w_p_fen w_onebuf_opt.wo_fen	/* 'foldenable' */
183     int		wo_fen_save;
184 # define w_p_fen_save w_onebuf_opt.wo_fen_save	/* 'foldenable' saved for diff mode */
185     char_u	*wo_fdi;
186 # define w_p_fdi w_onebuf_opt.wo_fdi	/* 'foldignore' */
187     long	wo_fdl;
188 # define w_p_fdl w_onebuf_opt.wo_fdl	/* 'foldlevel' */
189     int		wo_fdl_save;
190 # define w_p_fdl_save w_onebuf_opt.wo_fdl_save	/* 'foldlevel' state saved for diff mode */
191     char_u	*wo_fdm;
192 # define w_p_fdm w_onebuf_opt.wo_fdm	/* 'foldmethod' */
193     char_u	*wo_fdm_save;
194 # define w_p_fdm_save w_onebuf_opt.wo_fdm_save	/* 'fdm' saved for diff mode */
195     long	wo_fml;
196 # define w_p_fml w_onebuf_opt.wo_fml	/* 'foldminlines' */
197     long	wo_fdn;
198 # define w_p_fdn w_onebuf_opt.wo_fdn	/* 'foldnestmax' */
199 # ifdef FEAT_EVAL
200     char_u	*wo_fde;
201 # define w_p_fde w_onebuf_opt.wo_fde	/* 'foldexpr' */
202     char_u	*wo_fdt;
203 #  define w_p_fdt w_onebuf_opt.wo_fdt	/* 'foldtext' */
204 # endif
205     char_u	*wo_fmr;
206 # define w_p_fmr w_onebuf_opt.wo_fmr	/* 'foldmarker' */
207 #endif
208 #ifdef FEAT_LINEBREAK
209     int		wo_lbr;
210 # define w_p_lbr w_onebuf_opt.wo_lbr	/* 'linebreak' */
211 #endif
212     int		wo_list;
213 #define w_p_list w_onebuf_opt.wo_list	/* 'list' */
214     int		wo_nu;
215 #define w_p_nu w_onebuf_opt.wo_nu	/* 'number' */
216     int		wo_rnu;
217 #define w_p_rnu w_onebuf_opt.wo_rnu	/* 'relativenumber' */
218 #ifdef FEAT_LINEBREAK
219     long	wo_nuw;
220 # define w_p_nuw w_onebuf_opt.wo_nuw	/* 'numberwidth' */
221 #endif
222     int		wo_wfh;
223 # define w_p_wfh w_onebuf_opt.wo_wfh	/* 'winfixheight' */
224     int		wo_wfw;
225 # define w_p_wfw w_onebuf_opt.wo_wfw	/* 'winfixwidth' */
226 #if defined(FEAT_QUICKFIX)
227     int		wo_pvw;
228 # define w_p_pvw w_onebuf_opt.wo_pvw	/* 'previewwindow' */
229 #endif
230 #ifdef FEAT_RIGHTLEFT
231     int		wo_rl;
232 # define w_p_rl w_onebuf_opt.wo_rl	/* 'rightleft' */
233     char_u	*wo_rlc;
234 # define w_p_rlc w_onebuf_opt.wo_rlc	/* 'rightleftcmd' */
235 #endif
236     long	wo_scr;
237 #define w_p_scr w_onebuf_opt.wo_scr	/* 'scroll' */
238 #ifdef FEAT_SPELL
239     int		wo_spell;
240 # define w_p_spell w_onebuf_opt.wo_spell /* 'spell' */
241 #endif
242 #ifdef FEAT_SYN_HL
243     int		wo_cuc;
244 # define w_p_cuc w_onebuf_opt.wo_cuc	/* 'cursorcolumn' */
245     int		wo_cul;
246 # define w_p_cul w_onebuf_opt.wo_cul	/* 'cursorline' */
247     char_u	*wo_cc;
248 # define w_p_cc w_onebuf_opt.wo_cc	/* 'colorcolumn' */
249 #endif
250 #ifdef FEAT_STL_OPT
251     char_u	*wo_stl;
252 #define w_p_stl w_onebuf_opt.wo_stl	/* 'statusline' */
253 #endif
254     int		wo_scb;
255 #define w_p_scb w_onebuf_opt.wo_scb	/* 'scrollbind' */
256     int		wo_diff_saved; /* options were saved for starting diff mode */
257 #define w_p_diff_saved w_onebuf_opt.wo_diff_saved
258     int		wo_scb_save;	/* 'scrollbind' saved for diff mode*/
259 #define w_p_scb_save w_onebuf_opt.wo_scb_save
260     int		wo_wrap;
261 #define w_p_wrap w_onebuf_opt.wo_wrap	/* 'wrap' */
262 #ifdef FEAT_DIFF
263     int		wo_wrap_save;	/* 'wrap' state saved for diff mode*/
264 # define w_p_wrap_save w_onebuf_opt.wo_wrap_save
265 #endif
266 #ifdef FEAT_CONCEAL
267     char_u	*wo_cocu;		/* 'concealcursor' */
268 # define w_p_cocu w_onebuf_opt.wo_cocu
269     long	wo_cole;		/* 'conceallevel' */
270 # define w_p_cole w_onebuf_opt.wo_cole
271 #endif
272     int		wo_crb;
273 #define w_p_crb w_onebuf_opt.wo_crb	/* 'cursorbind' */
274     int		wo_crb_save;	/* 'cursorbind' state saved for diff mode*/
275 #define w_p_crb_save w_onebuf_opt.wo_crb_save
276 #ifdef FEAT_SIGNS
277     char_u	*wo_scl;
278 # define w_p_scl w_onebuf_opt.wo_scl	/* 'signcolumn' */
279 #endif
280 #ifdef FEAT_TERMINAL
281     char_u	*wo_twk;
282 # define w_p_twk w_onebuf_opt.wo_twk	/* 'termwinkey' */
283     char_u	*wo_tws;
284 # define w_p_tws w_onebuf_opt.wo_tws	/* 'termwinsize' */
285     char_u	*wo_tmod;
286 # define w_p_tmod w_onebuf_opt.wo_tmod	/* 'termmode' */
287 #endif
288 
289 #ifdef FEAT_EVAL
290     sctx_T	wo_script_ctx[WV_COUNT];	/* SCTXs for window-local options */
291 # define w_p_script_ctx w_onebuf_opt.wo_script_ctx
292 #endif
293 } winopt_T;
294 
295 /*
296  * Window info stored with a buffer.
297  *
298  * Two types of info are kept for a buffer which are associated with a
299  * specific window:
300  * 1. Each window can have a different line number associated with a buffer.
301  * 2. The window-local options for a buffer work in a similar way.
302  * The window-info is kept in a list at b_wininfo.  It is kept in
303  * most-recently-used order.
304  */
305 struct wininfo_S
306 {
307     wininfo_T	*wi_next;	/* next entry or NULL for last entry */
308     wininfo_T	*wi_prev;	/* previous entry or NULL for first entry */
309     win_T	*wi_win;	/* pointer to window that did set wi_fpos */
310     pos_T	wi_fpos;	/* last cursor position in the file */
311     int		wi_optset;	/* TRUE when wi_opt has useful values */
312     winopt_T	wi_opt;		/* local window options */
313 #ifdef FEAT_FOLDING
314     int		wi_fold_manual;	/* copy of w_fold_manual */
315     garray_T	wi_folds;	/* clone of w_folds */
316 #endif
317 };
318 
319 /*
320  * Info used to pass info about a fold from the fold-detection code to the
321  * code that displays the foldcolumn.
322  */
323 typedef struct foldinfo
324 {
325     int		fi_level;	/* level of the fold; when this is zero the
326 				   other fields are invalid */
327     int		fi_lnum;	/* line number where fold starts */
328     int		fi_low_level;	/* lowest fold level that starts in the same
329 				   line */
330 } foldinfo_T;
331 
332 /* Structure to store info about the Visual area. */
333 typedef struct
334 {
335     pos_T	vi_start;	/* start pos of last VIsual */
336     pos_T	vi_end;		/* end position of last VIsual */
337     int		vi_mode;	/* VIsual_mode of last VIsual */
338     colnr_T	vi_curswant;	/* MAXCOL from w_curswant */
339 } visualinfo_T;
340 
341 /*
342  * structures used for undo
343  */
344 
345 // One line saved for undo.  After the NUL terminated text there might be text
346 // properties, thus ul_len can be larger than STRLEN(ul_line) + 1.
347 typedef struct {
348     char_u	*ul_line;	// text of the line
349     long	ul_len;		// length of the line including NUL, plus text
350 				// properties
351 } undoline_T;
352 
353 typedef struct u_entry u_entry_T;
354 typedef struct u_header u_header_T;
355 struct u_entry
356 {
357     u_entry_T	*ue_next;	/* pointer to next entry in list */
358     linenr_T	ue_top;		/* number of line above undo block */
359     linenr_T	ue_bot;		/* number of line below undo block */
360     linenr_T	ue_lcount;	/* linecount when u_save called */
361     undoline_T	*ue_array;	/* array of lines in undo block */
362     long	ue_size;	/* number of lines in ue_array */
363 #ifdef U_DEBUG
364     int		ue_magic;	/* magic number to check allocation */
365 #endif
366 };
367 
368 struct u_header
369 {
370     /* The following have a pointer and a number. The number is used when
371      * reading the undo file in u_read_undo() */
372     union {
373 	u_header_T *ptr;	/* pointer to next undo header in list */
374 	long	   seq;
375     } uh_next;
376     union {
377 	u_header_T *ptr;	/* pointer to previous header in list */
378 	long	   seq;
379     } uh_prev;
380     union {
381 	u_header_T *ptr;	/* pointer to next header for alt. redo */
382 	long	   seq;
383     } uh_alt_next;
384     union {
385 	u_header_T *ptr;	/* pointer to previous header for alt. redo */
386 	long	   seq;
387     } uh_alt_prev;
388     long	uh_seq;		/* sequence number, higher == newer undo */
389     int		uh_walk;	/* used by undo_time() */
390     u_entry_T	*uh_entry;	/* pointer to first entry */
391     u_entry_T	*uh_getbot_entry; /* pointer to where ue_bot must be set */
392     pos_T	uh_cursor;	/* cursor position before saving */
393     long	uh_cursor_vcol;
394     int		uh_flags;	/* see below */
395     pos_T	uh_namedm[NMARKS];	/* marks before undo/after redo */
396     visualinfo_T uh_visual;	/* Visual areas before undo/after redo */
397     time_T	uh_time;	/* timestamp when the change was made */
398     long	uh_save_nr;	/* set when the file was saved after the
399 				   changes in this block */
400 #ifdef U_DEBUG
401     int		uh_magic;	/* magic number to check allocation */
402 #endif
403 };
404 
405 /* values for uh_flags */
406 #define UH_CHANGED  0x01	/* b_changed flag before undo/after redo */
407 #define UH_EMPTYBUF 0x02	/* buffer was empty */
408 
409 /*
410  * structures used in undo.c
411  */
412 #define ALIGN_LONG	/* longword alignment and use filler byte */
413 #define ALIGN_SIZE (sizeof(long))
414 
415 #define ALIGN_MASK (ALIGN_SIZE - 1)
416 
417 typedef struct m_info minfo_T;
418 
419 /*
420  * structure used to link chunks in one of the free chunk lists.
421  */
422 struct m_info
423 {
424 #ifdef ALIGN_LONG
425     long_u	m_size;		/* size of the chunk (including m_info) */
426 #else
427     short_u	m_size;		/* size of the chunk (including m_info) */
428 #endif
429     minfo_T	*m_next;	/* pointer to next free chunk in the list */
430 };
431 
432 /*
433  * things used in memfile.c
434  */
435 
436 typedef struct block_hdr    bhdr_T;
437 typedef struct memfile	    memfile_T;
438 typedef long		    blocknr_T;
439 
440 /*
441  * mf_hashtab_T is a chained hashtable with blocknr_T key and arbitrary
442  * structures as items.  This is an intrusive data structure: we require
443  * that items begin with mf_hashitem_T which contains the key and linked
444  * list pointers.  List of items in each bucket is doubly-linked.
445  */
446 
447 typedef struct mf_hashitem_S mf_hashitem_T;
448 
449 struct mf_hashitem_S
450 {
451     mf_hashitem_T   *mhi_next;
452     mf_hashitem_T   *mhi_prev;
453     blocknr_T	    mhi_key;
454 };
455 
456 #define MHT_INIT_SIZE   64
457 
458 typedef struct mf_hashtab_S
459 {
460     long_u	    mht_mask;	    /* mask used for hash value (nr of items
461 				     * in array is "mht_mask" + 1) */
462     long_u	    mht_count;	    /* nr of items inserted into hashtable */
463     mf_hashitem_T   **mht_buckets;  /* points to mht_small_buckets or
464 				     *dynamically allocated array */
465     mf_hashitem_T   *mht_small_buckets[MHT_INIT_SIZE];   /* initial buckets */
466     char	    mht_fixed;	    /* non-zero value forbids growth */
467 } mf_hashtab_T;
468 
469 /*
470  * for each (previously) used block in the memfile there is one block header.
471  *
472  * The block may be linked in the used list OR in the free list.
473  * The used blocks are also kept in hash lists.
474  *
475  * The used list is a doubly linked list, most recently used block first.
476  *	The blocks in the used list have a block of memory allocated.
477  *	mf_used_count is the number of pages in the used list.
478  * The hash lists are used to quickly find a block in the used list.
479  * The free list is a single linked list, not sorted.
480  *	The blocks in the free list have no block of memory allocated and
481  *	the contents of the block in the file (if any) is irrelevant.
482  */
483 
484 struct block_hdr
485 {
486     mf_hashitem_T bh_hashitem;      /* header for hash table and key */
487 #define bh_bnum bh_hashitem.mhi_key /* block number, part of bh_hashitem */
488 
489     bhdr_T	*bh_next;	    /* next block_hdr in free or used list */
490     bhdr_T	*bh_prev;	    /* previous block_hdr in used list */
491     char_u	*bh_data;	    /* pointer to memory (for used block) */
492     int		bh_page_count;	    /* number of pages in this block */
493 
494 #define BH_DIRTY    1
495 #define BH_LOCKED   2
496     char	bh_flags;	    /* BH_DIRTY or BH_LOCKED */
497 };
498 
499 /*
500  * when a block with a negative number is flushed to the file, it gets
501  * a positive number. Because the reference to the block is still the negative
502  * number, we remember the translation to the new positive number in the
503  * double linked trans lists. The structure is the same as the hash lists.
504  */
505 typedef struct nr_trans NR_TRANS;
506 
507 struct nr_trans
508 {
509     mf_hashitem_T nt_hashitem;		/* header for hash table and key */
510 #define nt_old_bnum nt_hashitem.mhi_key	/* old, negative, number */
511 
512     blocknr_T	nt_new_bnum;		/* new, positive, number */
513 };
514 
515 
516 typedef struct buffblock buffblock_T;
517 typedef struct buffheader buffheader_T;
518 
519 /*
520  * structure used to store one block of the stuff/redo/recording buffers
521  */
522 struct buffblock
523 {
524     buffblock_T	*b_next;	/* pointer to next buffblock */
525     char_u	b_str[1];	/* contents (actually longer) */
526 };
527 
528 /*
529  * header used for the stuff buffer and the redo buffer
530  */
531 struct buffheader
532 {
533     buffblock_T	bh_first;	/* first (dummy) block of list */
534     buffblock_T	*bh_curr;	/* buffblock for appending */
535     int		bh_index;	/* index for reading */
536     int		bh_space;	/* space in bh_curr for appending */
537 };
538 
539 typedef struct
540 {
541     buffheader_T sr_redobuff;
542     buffheader_T sr_old_redobuff;
543 } save_redo_T;
544 
545 /*
546  * used for completion on the command line
547  */
548 typedef struct expand
549 {
550     int		xp_context;		/* type of expansion */
551     char_u	*xp_pattern;		/* start of item to expand */
552     int		xp_pattern_len;		/* bytes in xp_pattern before cursor */
553 #if defined(FEAT_USR_CMDS) && defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
554     char_u	*xp_arg;		/* completion function */
555     sctx_T	xp_script_ctx;		/* SCTX for completion function */
556 #endif
557     int		xp_backslash;		/* one of the XP_BS_ values */
558 #ifndef BACKSLASH_IN_FILENAME
559     int		xp_shell;		/* TRUE for a shell command, more
560 					   characters need to be escaped */
561 #endif
562     int		xp_numfiles;		/* number of files found by
563 						    file name completion */
564     char_u	**xp_files;		/* list of files */
565     char_u	*xp_line;		/* text being completed */
566     int		xp_col;			/* cursor position in line */
567 } expand_T;
568 
569 /* values for xp_backslash */
570 #define XP_BS_NONE	0	/* nothing special for backslashes */
571 #define XP_BS_ONE	1	/* uses one backslash before a space */
572 #define XP_BS_THREE	2	/* uses three backslashes before a space */
573 
574 /*
575  * Command modifiers ":vertical", ":browse", ":confirm" and ":hide" set a flag.
576  * This needs to be saved for recursive commands, put them in a structure for
577  * easy manipulation.
578  */
579 typedef struct
580 {
581     int		hide;			/* TRUE when ":hide" was used */
582 # ifdef FEAT_BROWSE_CMD
583     int		browse;			/* TRUE to invoke file dialog */
584 # endif
585     int		split;			/* flags for win_split() */
586     int		tab;			/* > 0 when ":tab" was used */
587 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
588     int		confirm;		/* TRUE to invoke yes/no dialog */
589 # endif
590     int		keepalt;		/* TRUE when ":keepalt" was used */
591     int		keepmarks;		/* TRUE when ":keepmarks" was used */
592     int		keepjumps;		/* TRUE when ":keepjumps" was used */
593     int		lockmarks;		/* TRUE when ":lockmarks" was used */
594     int		keeppatterns;		/* TRUE when ":keeppatterns" was used */
595     int		noswapfile;		/* TRUE when ":noswapfile" was used */
596     char_u	*save_ei;		/* saved value of 'eventignore' */
597     regmatch_T	filter_regmatch;	/* set by :filter /pat/ */
598     int		filter_force;		/* set for :filter! */
599 } cmdmod_T;
600 
601 #define MF_SEED_LEN	8
602 
603 struct memfile
604 {
605     char_u	*mf_fname;		/* name of the file */
606     char_u	*mf_ffname;		/* idem, full path */
607     int		mf_fd;			/* file descriptor */
608     bhdr_T	*mf_free_first;		/* first block_hdr in free list */
609     bhdr_T	*mf_used_first;		/* mru block_hdr in used list */
610     bhdr_T	*mf_used_last;		/* lru block_hdr in used list */
611     unsigned	mf_used_count;		/* number of pages in used list */
612     unsigned	mf_used_count_max;	/* maximum number of pages in memory */
613     mf_hashtab_T mf_hash;		/* hash lists */
614     mf_hashtab_T mf_trans;		/* trans lists */
615     blocknr_T	mf_blocknr_max;		/* highest positive block number + 1*/
616     blocknr_T	mf_blocknr_min;		/* lowest negative block number - 1 */
617     blocknr_T	mf_neg_count;		/* number of negative blocks numbers */
618     blocknr_T	mf_infile_count;	/* number of pages in the file */
619     unsigned	mf_page_size;		/* number of bytes in a page */
620     int		mf_dirty;		/* TRUE if there are dirty blocks */
621 #ifdef FEAT_CRYPT
622     buf_T	*mf_buffer;		/* buffer this memfile is for */
623     char_u	mf_seed[MF_SEED_LEN];	/* seed for encryption */
624 
625     /* Values for key, method and seed used for reading data blocks when
626      * updating for a newly set key or method. Only when mf_old_key != NULL. */
627     char_u	*mf_old_key;
628     int		mf_old_cm;
629     char_u	mf_old_seed[MF_SEED_LEN];
630 #endif
631 };
632 
633 /*
634  * things used in memline.c
635  */
636 /*
637  * When searching for a specific line, we remember what blocks in the tree
638  * are the branches leading to that block. This is stored in ml_stack.  Each
639  * entry is a pointer to info in a block (may be data block or pointer block)
640  */
641 typedef struct info_pointer
642 {
643     blocknr_T	ip_bnum;	/* block number */
644     linenr_T	ip_low;		/* lowest lnum in this block */
645     linenr_T	ip_high;	/* highest lnum in this block */
646     int		ip_index;	/* index for block with current lnum */
647 } infoptr_T;	/* block/index pair */
648 
649 #ifdef FEAT_BYTEOFF
650 typedef struct ml_chunksize
651 {
652     int		mlcs_numlines;
653     long	mlcs_totalsize;
654 } chunksize_T;
655 
656  /* Flags when calling ml_updatechunk() */
657 
658 #define ML_CHNK_ADDLINE 1
659 #define ML_CHNK_DELLINE 2
660 #define ML_CHNK_UPDLINE 3
661 #endif
662 
663 /*
664  * the memline structure holds all the information about a memline
665  */
666 typedef struct memline
667 {
668     linenr_T	ml_line_count;	/* number of lines in the buffer */
669 
670     memfile_T	*ml_mfp;	/* pointer to associated memfile */
671 
672 #define ML_EMPTY	1	/* empty buffer */
673 #define ML_LINE_DIRTY	2	/* cached line was changed and allocated */
674 #define ML_LOCKED_DIRTY	4	/* ml_locked was changed */
675 #define ML_LOCKED_POS	8	/* ml_locked needs positive block number */
676     int		ml_flags;
677 
678     infoptr_T	*ml_stack;	/* stack of pointer blocks (array of IPTRs) */
679     int		ml_stack_top;	/* current top of ml_stack */
680     int		ml_stack_size;	/* total number of entries in ml_stack */
681 
682     linenr_T	ml_line_lnum;	/* line number of cached line, 0 if not valid */
683     char_u	*ml_line_ptr;	/* pointer to cached line */
684     colnr_T	ml_line_len;	/* length of the cached line, including NUL */
685 
686     bhdr_T	*ml_locked;	/* block used by last ml_get */
687     linenr_T	ml_locked_low;	/* first line in ml_locked */
688     linenr_T	ml_locked_high;	/* last line in ml_locked */
689     int		ml_locked_lineadd;  /* number of lines inserted in ml_locked */
690 #ifdef FEAT_BYTEOFF
691     chunksize_T *ml_chunksize;
692     int		ml_numchunks;
693     int		ml_usedchunks;
694 #endif
695 } memline_T;
696 
697 
698 /*
699  * Structure defining text properties.  These stick with the text.
700  * When stored in memline they are after the text, ml_line_len is larger than
701  * STRLEN(ml_line_ptr) + 1.
702  */
703 typedef struct textprop_S
704 {
705     colnr_T	tp_col;		// start column (one based, in bytes)
706     colnr_T	tp_len;		// length in bytes
707     int		tp_id;		// identifier
708     int		tp_type;	// property type
709     int		tp_flags;	// TP_FLAG_ values
710 } textprop_T;
711 
712 #define TP_FLAG_CONT_NEXT	1	// property continues in next line
713 #define TP_FLAG_CONT_PREV	2	// property was continued from prev line
714 
715 /*
716  * Structure defining a property type.
717  */
718 typedef struct proptype_S
719 {
720     int		pt_id;		// value used for tp_id
721     int		pt_type;	// number used for tp_type
722     int		pt_hl_id;	// highlighting
723     int		pt_priority;	// priority
724     int		pt_flags;	// PT_FLAG_ values
725     char_u	pt_name[1];	// property type name, actually longer
726 } proptype_T;
727 
728 #define PT_FLAG_INS_START_INCL	1	// insert at start included in property
729 #define PT_FLAG_INS_END_INCL	2	// insert at end included in property
730 
731 // Sign group
732 typedef struct signgroup_S
733 {
734     short_u	refcount;		// number of signs in this group
735     int		next_sign_id;		// next sign id for this group
736     char_u	sg_name[1];		// sign group name
737 } signgroup_T;
738 
739 typedef struct signlist signlist_T;
740 
741 struct signlist
742 {
743     int		id;		/* unique identifier for each placed sign */
744     linenr_T	lnum;		/* line number which has this sign */
745     int		typenr;		/* typenr of sign */
746     signgroup_T	*group;		/* sign group */
747     int		priority;	/* priority for highlighting */
748     signlist_T	*next;		/* next signlist entry */
749     signlist_T  *prev;		/* previous entry -- for easy reordering */
750 };
751 
752 #if defined(FEAT_SIGNS) || defined(PROTO)
753 // Macros to get the sign group structure from the group name
754 #define SGN_KEY_OFF	offsetof(signgroup_T, sg_name)
755 #define HI2SG(hi)	((signgroup_T *)((hi)->hi_key - SGN_KEY_OFF))
756 
757 // Default sign priority for highlighting
758 #define SIGN_DEF_PRIO	10
759 
760 /* type argument for buf_getsigntype() */
761 #define SIGN_ANY	0
762 #define SIGN_LINEHL	1
763 #define SIGN_ICON	2
764 #define SIGN_TEXT	3
765 #endif
766 
767 /*
768  * Argument list: Array of file names.
769  * Used for the global argument list and the argument lists local to a window.
770  */
771 typedef struct arglist
772 {
773     garray_T	al_ga;		/* growarray with the array of file names */
774     int		al_refcount;	/* number of windows using this arglist */
775     int		id;		/* id of this arglist */
776 } alist_T;
777 
778 /*
779  * For each argument remember the file name as it was given, and the buffer
780  * number that contains the expanded file name (required for when ":cd" is
781  * used.
782  */
783 typedef struct argentry
784 {
785     char_u	*ae_fname;	/* file name as specified */
786     int		ae_fnum;	/* buffer number with expanded file name */
787 } aentry_T;
788 
789 #define ALIST(win)	(win)->w_alist
790 #define GARGLIST	((aentry_T *)global_alist.al_ga.ga_data)
791 #define ARGLIST		((aentry_T *)ALIST(curwin)->al_ga.ga_data)
792 #define WARGLIST(wp)	((aentry_T *)ALIST(wp)->al_ga.ga_data)
793 #define AARGLIST(al)	((aentry_T *)((al)->al_ga.ga_data))
794 #define GARGCOUNT	(global_alist.al_ga.ga_len)
795 #define ARGCOUNT	(ALIST(curwin)->al_ga.ga_len)
796 #define WARGCOUNT(wp)	(ALIST(wp)->al_ga.ga_len)
797 
798 /*
799  * A list used for saving values of "emsg_silent".  Used by ex_try() to save the
800  * value of "emsg_silent" if it was non-zero.  When this is done, the CSF_SILENT
801  * flag below is set.
802  */
803 
804 typedef struct eslist_elem eslist_T;
805 struct eslist_elem
806 {
807     int		saved_emsg_silent;	/* saved value of "emsg_silent" */
808     eslist_T	*next;			/* next element on the list */
809 };
810 
811 /*
812  * For conditional commands a stack is kept of nested conditionals.
813  * When cs_idx < 0, there is no conditional command.
814  */
815 #define CSTACK_LEN	50
816 
817 struct condstack
818 {
819     short	cs_flags[CSTACK_LEN];	/* CSF_ flags */
820     char	cs_pending[CSTACK_LEN];	/* CSTP_: what's pending in ":finally"*/
821     union {
822 	void	*csp_rv[CSTACK_LEN];	/* return typeval for pending return */
823 	void	*csp_ex[CSTACK_LEN];	/* exception for pending throw */
824     }		cs_pend;
825     void	*cs_forinfo[CSTACK_LEN]; /* info used by ":for" */
826     int		cs_line[CSTACK_LEN];	/* line nr of ":while"/":for" line */
827     int		cs_idx;			/* current entry, or -1 if none */
828     int		cs_looplevel;		/* nr of nested ":while"s and ":for"s */
829     int		cs_trylevel;		/* nr of nested ":try"s */
830     eslist_T	*cs_emsg_silent_list;	/* saved values of "emsg_silent" */
831     char	cs_lflags;		/* loop flags: CSL_ flags */
832 };
833 # define cs_rettv	cs_pend.csp_rv
834 # define cs_exception	cs_pend.csp_ex
835 
836 /* There is no CSF_IF, the lack of CSF_WHILE, CSF_FOR and CSF_TRY means ":if"
837  * was used. */
838 # define CSF_TRUE	0x0001	/* condition was TRUE */
839 # define CSF_ACTIVE	0x0002	/* current state is active */
840 # define CSF_ELSE	0x0004	/* ":else" has been passed */
841 # define CSF_WHILE	0x0008	/* is a ":while" */
842 # define CSF_FOR	0x0010	/* is a ":for" */
843 
844 # define CSF_TRY	0x0100	/* is a ":try" */
845 # define CSF_FINALLY	0x0200	/* ":finally" has been passed */
846 # define CSF_THROWN	0x0400	/* exception thrown to this try conditional */
847 # define CSF_CAUGHT	0x0800  /* exception caught by this try conditional */
848 # define CSF_SILENT	0x1000	/* "emsg_silent" reset by ":try" */
849 /* Note that CSF_ELSE is only used when CSF_TRY and CSF_WHILE are unset
850  * (an ":if"), and CSF_SILENT is only used when CSF_TRY is set. */
851 
852 /*
853  * What's pending for being reactivated at the ":endtry" of this try
854  * conditional:
855  */
856 # define CSTP_NONE	0	/* nothing pending in ":finally" clause */
857 # define CSTP_ERROR	1	/* an error is pending */
858 # define CSTP_INTERRUPT	2	/* an interrupt is pending */
859 # define CSTP_THROW	4	/* a throw is pending */
860 # define CSTP_BREAK	8	/* ":break" is pending */
861 # define CSTP_CONTINUE	16	/* ":continue" is pending */
862 # define CSTP_RETURN	24	/* ":return" is pending */
863 # define CSTP_FINISH	32	/* ":finish" is pending */
864 
865 /*
866  * Flags for the cs_lflags item in struct condstack.
867  */
868 # define CSL_HAD_LOOP	 1	/* just found ":while" or ":for" */
869 # define CSL_HAD_ENDLOOP 2	/* just found ":endwhile" or ":endfor" */
870 # define CSL_HAD_CONT	 4	/* just found ":continue" */
871 # define CSL_HAD_FINA	 8	/* just found ":finally" */
872 
873 /*
874  * A list of error messages that can be converted to an exception.  "throw_msg"
875  * is only set in the first element of the list.  Usually, it points to the
876  * original message stored in that element, but sometimes it points to a later
877  * message in the list.  See cause_errthrow() below.
878  */
879 struct msglist
880 {
881     char		*msg;		/* original message */
882     char		*throw_msg;	/* msg to throw: usually original one */
883     struct msglist	*next;		/* next of several messages in a row */
884 };
885 
886 /*
887  * The exception types.
888  */
889 typedef enum
890 {
891     ET_USER,		// exception caused by ":throw" command
892     ET_ERROR,		// error exception
893     ET_INTERRUPT,	// interrupt exception triggered by Ctrl-C
894 } except_type_T;
895 
896 /*
897  * Structure describing an exception.
898  * (don't use "struct exception", it's used by the math library).
899  */
900 typedef struct vim_exception except_T;
901 struct vim_exception
902 {
903     except_type_T	type;		/* exception type */
904     char		*value;		/* exception value */
905     struct msglist	*messages;	/* message(s) causing error exception */
906     char_u		*throw_name;	/* name of the throw point */
907     linenr_T		throw_lnum;	/* line number of the throw point */
908     except_T		*caught;	/* next exception on the caught stack */
909 };
910 
911 /*
912  * Structure to save the error/interrupt/exception state between calls to
913  * enter_cleanup() and leave_cleanup().  Must be allocated as an automatic
914  * variable by the (common) caller of these functions.
915  */
916 typedef struct cleanup_stuff cleanup_T;
917 struct cleanup_stuff
918 {
919     int pending;		/* error/interrupt/exception state */
920     except_T *exception;	/* exception value */
921 };
922 
923 #ifdef FEAT_SYN_HL
924 /* struct passed to in_id_list() */
925 struct sp_syn
926 {
927     int		inc_tag;	/* ":syn include" unique tag */
928     short	id;		/* highlight group ID of item */
929     short	*cont_in_list;	/* cont.in group IDs, if non-zero */
930 };
931 
932 /*
933  * Each keyword has one keyentry, which is linked in a hash list.
934  */
935 typedef struct keyentry keyentry_T;
936 
937 struct keyentry
938 {
939     keyentry_T	*ke_next;	/* next entry with identical "keyword[]" */
940     struct sp_syn k_syn;	/* struct passed to in_id_list() */
941     short	*next_list;	/* ID list for next match (if non-zero) */
942     int		flags;
943     int		k_char;		/* conceal substitute character */
944     char_u	keyword[1];	/* actually longer */
945 };
946 
947 /*
948  * Struct used to store one state of the state stack.
949  */
950 typedef struct buf_state
951 {
952     int		    bs_idx;	 /* index of pattern */
953     int		    bs_flags;	 /* flags for pattern */
954 #ifdef FEAT_CONCEAL
955     int		    bs_seqnr;	 /* stores si_seqnr */
956     int		    bs_cchar;	 /* stores si_cchar */
957 #endif
958     reg_extmatch_T *bs_extmatch; /* external matches from start pattern */
959 } bufstate_T;
960 
961 /*
962  * syn_state contains the syntax state stack for the start of one line.
963  * Used by b_sst_array[].
964  */
965 typedef struct syn_state synstate_T;
966 
967 struct syn_state
968 {
969     synstate_T	*sst_next;	/* next entry in used or free list */
970     linenr_T	sst_lnum;	/* line number for this state */
971     union
972     {
973 	bufstate_T	sst_stack[SST_FIX_STATES]; /* short state stack */
974 	garray_T	sst_ga;	/* growarray for long state stack */
975     } sst_union;
976     int		sst_next_flags;	/* flags for sst_next_list */
977     int		sst_stacksize;	/* number of states on the stack */
978     short	*sst_next_list;	/* "nextgroup" list in this state
979 				 * (this is a copy, don't free it! */
980     disptick_T	sst_tick;	/* tick when last displayed */
981     linenr_T	sst_change_lnum;/* when non-zero, change in this line
982 				 * may have made the state invalid */
983 };
984 #endif /* FEAT_SYN_HL */
985 
986 /*
987  * Structure shared between syntax.c, screen.c and gui_x11.c.
988  */
989 typedef struct attr_entry
990 {
991     short	    ae_attr;		/* HL_BOLD, etc. */
992     union
993     {
994 	struct
995 	{
996 	    char_u	    *start;	/* start escape sequence */
997 	    char_u	    *stop;	/* stop escape sequence */
998 	} term;
999 	struct
1000 	{
1001 	    /* These colors need to be > 8 bits to hold 256. */
1002 	    short_u	    fg_color;	/* foreground color number */
1003 	    short_u	    bg_color;	/* background color number */
1004 # ifdef FEAT_TERMGUICOLORS
1005 	    guicolor_T	    fg_rgb;	/* foreground color RGB */
1006 	    guicolor_T	    bg_rgb;	/* background color RGB */
1007 # endif
1008 	} cterm;
1009 # ifdef FEAT_GUI
1010 	struct
1011 	{
1012 	    guicolor_T	    fg_color;	/* foreground color handle */
1013 	    guicolor_T	    bg_color;	/* background color handle */
1014 	    guicolor_T	    sp_color;	/* special color handle */
1015 	    GuiFont	    font;	/* font handle */
1016 #  ifdef FEAT_XFONTSET
1017 	    GuiFontset	    fontset;	/* fontset handle */
1018 #  endif
1019 	} gui;
1020 # endif
1021     } ae_u;
1022 } attrentry_T;
1023 
1024 #ifdef USE_ICONV
1025 # ifdef HAVE_ICONV_H
1026 #  include <iconv.h>
1027 # else
1028 #  if defined(MACOS_X)
1029 #   include <sys/errno.h>
1030 #   ifndef EILSEQ
1031 #    define EILSEQ ENOENT /* Early MacOS X does not have EILSEQ */
1032 #   endif
1033 typedef struct _iconv_t *iconv_t;
1034 #  else
1035 #   include <errno.h>
1036 #  endif
1037 typedef void *iconv_t;
1038 # endif
1039 #endif
1040 
1041 /*
1042  * Used for the typeahead buffer: typebuf.
1043  */
1044 typedef struct
1045 {
1046     char_u	*tb_buf;	/* buffer for typed characters */
1047     char_u	*tb_noremap;	/* mapping flags for characters in tb_buf[] */
1048     int		tb_buflen;	/* size of tb_buf[] */
1049     int		tb_off;		/* current position in tb_buf[] */
1050     int		tb_len;		/* number of valid bytes in tb_buf[] */
1051     int		tb_maplen;	/* nr of mapped bytes in tb_buf[] */
1052     int		tb_silent;	/* nr of silently mapped bytes in tb_buf[] */
1053     int		tb_no_abbr_cnt; /* nr of bytes without abbrev. in tb_buf[] */
1054     int		tb_change_cnt;	/* nr of time tb_buf was changed; never zero */
1055 } typebuf_T;
1056 
1057 /* Struct to hold the saved typeahead for save_typeahead(). */
1058 typedef struct
1059 {
1060     typebuf_T		save_typebuf;
1061     int			typebuf_valid;	    /* TRUE when save_typebuf valid */
1062     int			old_char;
1063     int			old_mod_mask;
1064     buffheader_T	save_readbuf1;
1065     buffheader_T	save_readbuf2;
1066 #ifdef USE_INPUT_BUF
1067     char_u		*save_inputbuf;
1068 #endif
1069 } tasave_T;
1070 
1071 /*
1072  * Used for conversion of terminal I/O and script files.
1073  */
1074 typedef struct
1075 {
1076     int		vc_type;	/* zero or one of the CONV_ values */
1077     int		vc_factor;	/* max. expansion factor */
1078 # ifdef WIN3264
1079     int		vc_cpfrom;	/* codepage to convert from (CONV_CODEPAGE) */
1080     int		vc_cpto;	/* codepage to convert to (CONV_CODEPAGE) */
1081 # endif
1082 # ifdef USE_ICONV
1083     iconv_t	vc_fd;		/* for CONV_ICONV */
1084 # endif
1085     int		vc_fail;	/* fail for invalid char, don't use '?' */
1086 } vimconv_T;
1087 
1088 /*
1089  * Structure used for reading from the viminfo file.
1090  */
1091 typedef struct
1092 {
1093     char_u	*vir_line;	/* text of the current line */
1094     FILE	*vir_fd;	/* file descriptor */
1095     vimconv_T	vir_conv;	/* encoding conversion */
1096     int		vir_version;	/* viminfo version detected or -1 */
1097     garray_T	vir_barlines;	/* lines starting with | */
1098 } vir_T;
1099 
1100 #define CONV_NONE		0
1101 #define CONV_TO_UTF8		1
1102 #define CONV_9_TO_UTF8		2
1103 #define CONV_TO_LATIN1		3
1104 #define CONV_TO_LATIN9		4
1105 #define CONV_ICONV		5
1106 #ifdef WIN3264
1107 # define CONV_CODEPAGE		10	/* codepage -> codepage */
1108 #endif
1109 #ifdef MACOS_X
1110 # define CONV_MAC_LATIN1	20
1111 # define CONV_LATIN1_MAC	21
1112 # define CONV_MAC_UTF8		22
1113 # define CONV_UTF8_MAC		23
1114 #endif
1115 
1116 /*
1117  * Structure used for mappings and abbreviations.
1118  */
1119 typedef struct mapblock mapblock_T;
1120 struct mapblock
1121 {
1122     mapblock_T	*m_next;	/* next mapblock in list */
1123     char_u	*m_keys;	/* mapped from, lhs */
1124     char_u	*m_str;		/* mapped to, rhs */
1125     char_u	*m_orig_str;	/* rhs as entered by the user */
1126     int		m_keylen;	/* strlen(m_keys) */
1127     int		m_mode;		/* valid mode */
1128     int		m_noremap;	/* if non-zero no re-mapping for m_str */
1129     char	m_silent;	/* <silent> used, don't echo commands */
1130     char	m_nowait;	/* <nowait> used */
1131 #ifdef FEAT_EVAL
1132     char	m_expr;		/* <expr> used, m_str is an expression */
1133     sctx_T	m_script_ctx;		/* SCTX where map was defined */
1134 #endif
1135 };
1136 
1137 /*
1138  * Used for highlighting in the status line.
1139  */
1140 struct stl_hlrec
1141 {
1142     char_u	*start;
1143     int		userhl;		/* 0: no HL, 1-9: User HL, < 0 for syn ID */
1144 };
1145 
1146 
1147 /*
1148  * Syntax items - usually buffer-specific.
1149  */
1150 
1151 /* Item for a hashtable.  "hi_key" can be one of three values:
1152  * NULL:	   Never been used
1153  * HI_KEY_REMOVED: Entry was removed
1154  * Otherwise:	   Used item, pointer to the actual key; this usually is
1155  *		   inside the item, subtract an offset to locate the item.
1156  *		   This reduces the size of hashitem by 1/3.
1157  */
1158 typedef struct hashitem_S
1159 {
1160     long_u	hi_hash;	/* cached hash number of hi_key */
1161     char_u	*hi_key;
1162 } hashitem_T;
1163 
1164 /* The address of "hash_removed" is used as a magic number for hi_key to
1165  * indicate a removed item. */
1166 #define HI_KEY_REMOVED &hash_removed
1167 #define HASHITEM_EMPTY(hi) ((hi)->hi_key == NULL || (hi)->hi_key == &hash_removed)
1168 
1169 /* Initial size for a hashtable.  Our items are relatively small and growing
1170  * is expensive, thus use 16 as a start.  Must be a power of 2. */
1171 #define HT_INIT_SIZE 16
1172 
1173 typedef struct hashtable_S
1174 {
1175     long_u	ht_mask;	/* mask used for hash value (nr of items in
1176 				 * array is "ht_mask" + 1) */
1177     long_u	ht_used;	/* number of items used */
1178     long_u	ht_filled;	/* number of items used + removed */
1179     int		ht_locked;	/* counter for hash_lock() */
1180     int		ht_error;	/* when set growing failed, can't add more
1181 				   items before growing works */
1182     hashitem_T	*ht_array;	/* points to the array, allocated when it's
1183 				   not "ht_smallarray" */
1184     hashitem_T	ht_smallarray[HT_INIT_SIZE];   /* initial array */
1185 } hashtab_T;
1186 
1187 typedef long_u hash_T;		/* Type for hi_hash */
1188 
1189 
1190 #ifdef FEAT_NUM64
1191 /* Use 64-bit Number. */
1192 # ifdef WIN3264
1193 #  ifdef PROTO
1194 typedef long		    varnumber_T;
1195 typedef unsigned long	    uvarnumber_T;
1196 #define VARNUM_MIN	    LONG_MIN
1197 #define VARNUM_MAX	    LONG_MAX
1198 #define UVARNUM_MAX	    ULONG_MAX
1199 #  else
1200 typedef __int64		    varnumber_T;
1201 typedef unsigned __int64    uvarnumber_T;
1202 #define VARNUM_MIN	    _I64_MIN
1203 #define VARNUM_MAX	    _I64_MAX
1204 #define UVARNUM_MAX	    _UI64_MAX
1205 #  endif
1206 # elif defined(HAVE_STDINT_H)
1207 typedef int64_t		    varnumber_T;
1208 typedef uint64_t	    uvarnumber_T;
1209 #define VARNUM_MIN	    INT64_MIN
1210 #define VARNUM_MAX	    INT64_MAX
1211 #define UVARNUM_MAX	    UINT64_MAX
1212 # else
1213 typedef long		    varnumber_T;
1214 typedef unsigned long	    uvarnumber_T;
1215 #define VARNUM_MIN	    LONG_MIN
1216 #define VARNUM_MAX	    LONG_MAX
1217 #define UVARNUM_MAX	    ULONG_MAX
1218 # endif
1219 #else
1220 /* Use 32-bit Number. */
1221 typedef int		    varnumber_T;
1222 typedef unsigned int	    uvarnumber_T;
1223 #define VARNUM_MIN	    INT_MIN
1224 #define VARNUM_MAX	    INT_MAX
1225 #define UVARNUM_MAX	    UINT_MAX
1226 #endif
1227 
1228 typedef double	float_T;
1229 
1230 typedef struct listvar_S list_T;
1231 typedef struct dictvar_S dict_T;
1232 typedef struct partial_S partial_T;
1233 typedef struct blobvar_S blob_T;
1234 
1235 typedef struct jobvar_S job_T;
1236 typedef struct readq_S readq_T;
1237 typedef struct writeq_S writeq_T;
1238 typedef struct jsonq_S jsonq_T;
1239 typedef struct cbq_S cbq_T;
1240 typedef struct channel_S channel_T;
1241 
1242 typedef enum
1243 {
1244     VAR_UNKNOWN = 0,
1245     VAR_NUMBER,	 // "v_number" is used
1246     VAR_STRING,	 // "v_string" is used
1247     VAR_FUNC,	 // "v_string" is function name
1248     VAR_PARTIAL, // "v_partial" is used
1249     VAR_LIST,	 // "v_list" is used
1250     VAR_DICT,	 // "v_dict" is used
1251     VAR_FLOAT,	 // "v_float" is used
1252     VAR_SPECIAL, // "v_number" is used
1253     VAR_JOB,	 // "v_job" is used
1254     VAR_CHANNEL, // "v_channel" is used
1255     VAR_BLOB,	 // "v_blob" is used
1256 } vartype_T;
1257 
1258 /*
1259  * Structure to hold an internal variable without a name.
1260  */
1261 typedef struct
1262 {
1263     vartype_T	v_type;
1264     char	v_lock;	    /* see below: VAR_LOCKED, VAR_FIXED */
1265     union
1266     {
1267 	varnumber_T	v_number;	/* number value */
1268 #ifdef FEAT_FLOAT
1269 	float_T		v_float;	/* floating number value */
1270 #endif
1271 	char_u		*v_string;	/* string value (can be NULL!) */
1272 	list_T		*v_list;	/* list value (can be NULL!) */
1273 	dict_T		*v_dict;	/* dict value (can be NULL!) */
1274 	partial_T	*v_partial;	/* closure: function with args */
1275 #ifdef FEAT_JOB_CHANNEL
1276 	job_T		*v_job;		/* job value (can be NULL!) */
1277 	channel_T	*v_channel;	/* channel value (can be NULL!) */
1278 #endif
1279 	blob_T		*v_blob;	/* blob value (can be NULL!) */
1280     }		vval;
1281 } typval_T;
1282 
1283 /* Values for "dv_scope". */
1284 #define VAR_SCOPE     1	/* a:, v:, s:, etc. scope dictionaries */
1285 #define VAR_DEF_SCOPE 2	/* l:, g: scope dictionaries: here funcrefs are not
1286 			   allowed to mask existing functions */
1287 
1288 /* Values for "v_lock". */
1289 #define VAR_LOCKED  1	/* locked with lock(), can use unlock() */
1290 #define VAR_FIXED   2	/* locked forever */
1291 
1292 /*
1293  * Structure to hold an item of a list: an internal variable without a name.
1294  */
1295 typedef struct listitem_S listitem_T;
1296 
1297 struct listitem_S
1298 {
1299     listitem_T	*li_next;	/* next item in list */
1300     listitem_T	*li_prev;	/* previous item in list */
1301     typval_T	li_tv;		/* type and value of the variable */
1302 };
1303 
1304 /*
1305  * Struct used by those that are using an item in a list.
1306  */
1307 typedef struct listwatch_S listwatch_T;
1308 
1309 struct listwatch_S
1310 {
1311     listitem_T		*lw_item;	/* item being watched */
1312     listwatch_T		*lw_next;	/* next watcher */
1313 };
1314 
1315 /*
1316  * Structure to hold info about a list.
1317  * Order of members is optimized to reduce padding.
1318  */
1319 struct listvar_S
1320 {
1321     listitem_T	*lv_first;	/* first item, NULL if none */
1322     listitem_T	*lv_last;	/* last item, NULL if none */
1323     listwatch_T	*lv_watch;	/* first watcher, NULL if none */
1324     listitem_T	*lv_idx_item;	/* when not NULL item at index "lv_idx" */
1325     list_T	*lv_copylist;	/* copied list used by deepcopy() */
1326     list_T	*lv_used_next;	/* next list in used lists list */
1327     list_T	*lv_used_prev;	/* previous list in used lists list */
1328     int		lv_refcount;	/* reference count */
1329     int		lv_len;		/* number of items */
1330     int		lv_idx;		/* cached index of an item */
1331     int		lv_copyID;	/* ID used by deepcopy() */
1332     char	lv_lock;	/* zero, VAR_LOCKED, VAR_FIXED */
1333 };
1334 
1335 /*
1336  * Static list with 10 items.  Use init_static_list() to initialize.
1337  */
1338 typedef struct {
1339     list_T	sl_list;	/* must be first */
1340     listitem_T	sl_items[10];
1341 } staticList10_T;
1342 
1343 /*
1344  * Structure to hold an item of a Dictionary.
1345  * Also used for a variable.
1346  * The key is copied into "di_key" to avoid an extra alloc/free for it.
1347  */
1348 struct dictitem_S
1349 {
1350     typval_T	di_tv;		/* type and value of the variable */
1351     char_u	di_flags;	/* flags (only used for variable) */
1352     char_u	di_key[1];	/* key (actually longer!) */
1353 };
1354 typedef struct dictitem_S dictitem_T;
1355 
1356 /* A dictitem with a 16 character key (plus NUL). */
1357 struct dictitem16_S
1358 {
1359     typval_T	di_tv;		/* type and value of the variable */
1360     char_u	di_flags;	/* flags (only used for variable) */
1361     char_u	di_key[17];	/* key */
1362 };
1363 typedef struct dictitem16_S dictitem16_T;
1364 
1365 #define DI_FLAGS_RO	1  /* "di_flags" value: read-only variable */
1366 #define DI_FLAGS_RO_SBX 2  /* "di_flags" value: read-only in the sandbox */
1367 #define DI_FLAGS_FIX	4  /* "di_flags" value: fixed: no :unlet or remove() */
1368 #define DI_FLAGS_LOCK	8  /* "di_flags" value: locked variable */
1369 #define DI_FLAGS_ALLOC	16 /* "di_flags" value: separately allocated */
1370 
1371 /*
1372  * Structure to hold info about a Dictionary.
1373  */
1374 struct dictvar_S
1375 {
1376     char	dv_lock;	/* zero, VAR_LOCKED, VAR_FIXED */
1377     char	dv_scope;	/* zero, VAR_SCOPE, VAR_DEF_SCOPE */
1378     int		dv_refcount;	/* reference count */
1379     int		dv_copyID;	/* ID used by deepcopy() */
1380     hashtab_T	dv_hashtab;	/* hashtab that refers to the items */
1381     dict_T	*dv_copydict;	/* copied dict used by deepcopy() */
1382     dict_T	*dv_used_next;	/* next dict in used dicts list */
1383     dict_T	*dv_used_prev;	/* previous dict in used dicts list */
1384 };
1385 
1386 /*
1387  * Structure to hold info about a blob.
1388  */
1389 struct blobvar_S
1390 {
1391     garray_T	bv_ga;		// growarray with the data
1392     int		bv_refcount;	// reference count
1393     char	bv_lock;	// zero, VAR_LOCKED, VAR_FIXED
1394 };
1395 
1396 #if defined(FEAT_EVAL) || defined(PROTO)
1397 typedef struct funccall_S funccall_T;
1398 
1399 /*
1400  * Structure to hold info for a user function.
1401  */
1402 typedef struct
1403 {
1404     int		uf_varargs;	/* variable nr of arguments */
1405     int		uf_flags;
1406     int		uf_calls;	/* nr of active calls */
1407     int		uf_cleared;	/* func_clear() was already called */
1408     garray_T	uf_args;	/* arguments */
1409     garray_T	uf_lines;	/* function lines */
1410 # ifdef FEAT_PROFILE
1411     int		uf_profiling;	/* TRUE when func is being profiled */
1412     int		uf_prof_initialized;
1413     /* profiling the function as a whole */
1414     int		uf_tm_count;	/* nr of calls */
1415     proftime_T	uf_tm_total;	/* time spent in function + children */
1416     proftime_T	uf_tm_self;	/* time spent in function itself */
1417     proftime_T	uf_tm_children;	/* time spent in children this call */
1418     /* profiling the function per line */
1419     int		*uf_tml_count;	/* nr of times line was executed */
1420     proftime_T	*uf_tml_total;	/* time spent in a line + children */
1421     proftime_T	*uf_tml_self;	/* time spent in a line itself */
1422     proftime_T	uf_tml_start;	/* start time for current line */
1423     proftime_T	uf_tml_children; /* time spent in children for this line */
1424     proftime_T	uf_tml_wait;	/* start wait time for current line */
1425     int		uf_tml_idx;	/* index of line being timed; -1 if none */
1426     int		uf_tml_execed;	/* line being timed was executed */
1427 # endif
1428     sctx_T	uf_script_ctx;	/* SCTX where function was defined,
1429 				   used for s: variables */
1430     int		uf_refcount;	/* reference count, see func_name_refcount() */
1431     funccall_T	*uf_scoped;	/* l: local variables for closure */
1432     char_u	uf_name[1];	/* name of function (actually longer); can
1433 				   start with <SNR>123_ (<SNR> is K_SPECIAL
1434 				   KS_EXTRA KE_SNR) */
1435 } ufunc_T;
1436 
1437 #define MAX_FUNC_ARGS	20	/* maximum number of function arguments */
1438 #define VAR_SHORT_LEN	20	/* short variable name length */
1439 #define FIXVAR_CNT	12	/* number of fixed variables */
1440 
1441 /* structure to hold info for a function that is currently being executed. */
1442 struct funccall_S
1443 {
1444     ufunc_T	*func;		/* function being called */
1445     int		linenr;		/* next line to be executed */
1446     int		returned;	/* ":return" used */
1447     struct			/* fixed variables for arguments */
1448     {
1449 	dictitem_T	var;		/* variable (without room for name) */
1450 	char_u	room[VAR_SHORT_LEN];	/* room for the name */
1451     } fixvar[FIXVAR_CNT];
1452     dict_T	l_vars;		/* l: local function variables */
1453     dictitem_T	l_vars_var;	/* variable for l: scope */
1454     dict_T	l_avars;	/* a: argument variables */
1455     dictitem_T	l_avars_var;	/* variable for a: scope */
1456     list_T	l_varlist;	/* list for a:000 */
1457     listitem_T	l_listitems[MAX_FUNC_ARGS];	/* listitems for a:000 */
1458     typval_T	*rettv;		/* return value */
1459     linenr_T	breakpoint;	/* next line with breakpoint or zero */
1460     int		dbg_tick;	/* debug_tick when breakpoint was set */
1461     int		level;		/* top nesting level of executed function */
1462 #ifdef FEAT_PROFILE
1463     proftime_T	prof_child;	/* time spent in a child */
1464 #endif
1465     funccall_T	*caller;	/* calling function or NULL */
1466 
1467     /* for closure */
1468     int		fc_refcount;	/* number of user functions that reference this
1469 				 * funccal */
1470     int		fc_copyID;	/* for garbage collection */
1471     garray_T	fc_funcs;	/* list of ufunc_T* which keep a reference to
1472 				 * "func" */
1473 };
1474 
1475 /*
1476  * Struct used by trans_function_name()
1477  */
1478 typedef struct
1479 {
1480     dict_T	*fd_dict;	/* Dictionary used */
1481     char_u	*fd_newkey;	/* new key in "dict" in allocated memory */
1482     dictitem_T	*fd_di;		/* Dictionary item used */
1483 } funcdict_T;
1484 
1485 typedef struct funccal_entry funccal_entry_T;
1486 struct funccal_entry {
1487     void	    *top_funccal;
1488     funccal_entry_T *next;
1489 };
1490 
1491 #else
1492 /* dummy typedefs for function prototypes */
1493 typedef struct
1494 {
1495     int	    dummy;
1496 } ufunc_T;
1497 typedef struct
1498 {
1499     int	    dummy;
1500 } funcdict_T;
1501 typedef struct
1502 {
1503     int	    dummy;
1504 } funccal_entry_T;
1505 #endif
1506 
1507 struct partial_S
1508 {
1509     int		pt_refcount;	/* reference count */
1510     char_u	*pt_name;	/* function name; when NULL use
1511 				 * pt_func->uf_name */
1512     ufunc_T	*pt_func;	/* function pointer; when NULL lookup function
1513 				 * with pt_name */
1514     int		pt_auto;	/* when TRUE the partial was created for using
1515 				   dict.member in handle_subscript() */
1516     int		pt_argc;	/* number of arguments */
1517     typval_T	*pt_argv;	/* arguments in allocated array */
1518     dict_T	*pt_dict;	/* dict for "self" */
1519 };
1520 
1521 /* Information returned by get_tty_info(). */
1522 typedef struct {
1523     int backspace;	/* what the Backspace key produces */
1524     int enter;		/* what the Enter key produces */
1525     int interrupt;	/* interrupt character */
1526     int nl_does_cr;	/* TRUE when a NL is expanded to CR-NL on output */
1527 } ttyinfo_T;
1528 
1529 /* Status of a job.  Order matters! */
1530 typedef enum
1531 {
1532     JOB_FAILED,
1533     JOB_STARTED,
1534     JOB_ENDED,	    // detected job done
1535     JOB_FINISHED,   // job done and cleanup done
1536 } jobstatus_T;
1537 
1538 /*
1539  * Structure to hold info about a Job.
1540  */
1541 struct jobvar_S
1542 {
1543     job_T	*jv_next;
1544     job_T	*jv_prev;
1545 #ifdef UNIX
1546     pid_t	jv_pid;
1547 #endif
1548 #ifdef WIN32
1549     PROCESS_INFORMATION	jv_proc_info;
1550     HANDLE		jv_job_object;
1551 #endif
1552     char_u	*jv_tty_in;	/* controlling tty input, allocated */
1553     char_u	*jv_tty_out;	/* controlling tty output, allocated */
1554     jobstatus_T	jv_status;
1555     char_u	*jv_stoponexit;	/* allocated */
1556 #ifdef UNIX
1557     char_u	*jv_termsig;	/* allocated */
1558 #endif
1559     int		jv_exitval;
1560     char_u	*jv_exit_cb;	/* allocated */
1561     partial_T	*jv_exit_partial;
1562 
1563     buf_T	*jv_in_buf;	/* buffer from "in-name" */
1564 
1565     int		jv_refcount;	/* reference count */
1566     int		jv_copyID;
1567 
1568     channel_T	*jv_channel;	/* channel for I/O, reference counted */
1569     char	**jv_argv;	/* command line used to start the job */
1570 };
1571 
1572 /*
1573  * Structures to hold info about a Channel.
1574  */
1575 struct readq_S
1576 {
1577     char_u	*rq_buffer;
1578     long_u	rq_buflen;
1579     readq_T	*rq_next;
1580     readq_T	*rq_prev;
1581 };
1582 
1583 struct writeq_S
1584 {
1585     garray_T	wq_ga;
1586     writeq_T	*wq_next;
1587     writeq_T	*wq_prev;
1588 };
1589 
1590 struct jsonq_S
1591 {
1592     typval_T	*jq_value;
1593     jsonq_T	*jq_next;
1594     jsonq_T	*jq_prev;
1595     int		jq_no_callback; /* TRUE when no callback was found */
1596 };
1597 
1598 struct cbq_S
1599 {
1600     char_u	*cq_callback;
1601     partial_T	*cq_partial;
1602     int		cq_seq_nr;
1603     cbq_T	*cq_next;
1604     cbq_T	*cq_prev;
1605 };
1606 
1607 /* mode for a channel */
1608 typedef enum
1609 {
1610     MODE_NL = 0,
1611     MODE_RAW,
1612     MODE_JSON,
1613     MODE_JS,
1614 } ch_mode_T;
1615 
1616 typedef enum {
1617     JIO_PIPE,	    // default
1618     JIO_NULL,
1619     JIO_FILE,
1620     JIO_BUFFER,
1621     JIO_OUT
1622 } job_io_T;
1623 
1624 #define CH_PART_FD(part)	ch_part[part].ch_fd
1625 
1626 /* Ordering matters, it is used in for loops: IN is last, only SOCK/OUT/ERR
1627  * are polled. */
1628 typedef enum {
1629     PART_SOCK = 0,
1630 #define CH_SOCK_FD	CH_PART_FD(PART_SOCK)
1631 #ifdef FEAT_JOB_CHANNEL
1632     PART_OUT,
1633 # define CH_OUT_FD	CH_PART_FD(PART_OUT)
1634     PART_ERR,
1635 # define CH_ERR_FD	CH_PART_FD(PART_ERR)
1636     PART_IN,
1637 # define CH_IN_FD	CH_PART_FD(PART_IN)
1638 #endif
1639     PART_COUNT,
1640 } ch_part_T;
1641 
1642 #define INVALID_FD	(-1)
1643 
1644 /* The per-fd info for a channel. */
1645 typedef struct {
1646     sock_T	ch_fd;	    /* socket/stdin/stdout/stderr, -1 if not used */
1647 
1648 # if defined(UNIX) && !defined(HAVE_SELECT)
1649     int		ch_poll_idx;	/* used by channel_poll_setup() */
1650 # endif
1651 
1652 #ifdef FEAT_GUI_X11
1653     XtInputId	ch_inputHandler; /* Cookie for input */
1654 #endif
1655 #ifdef FEAT_GUI_GTK
1656     gint	ch_inputHandler; /* Cookie for input */
1657 #endif
1658 
1659     ch_mode_T	ch_mode;
1660     job_io_T	ch_io;
1661     int		ch_timeout;	/* request timeout in msec */
1662 
1663     readq_T	ch_head;	/* header for circular raw read queue */
1664     jsonq_T	ch_json_head;	/* header for circular json read queue */
1665     int		ch_block_id;	/* ID that channel_read_json_block() is
1666 				   waiting for */
1667     /* When ch_wait_len is non-zero use ch_deadline to wait for incomplete
1668      * message to be complete. The value is the length of the incomplete
1669      * message when the deadline was set.  If it gets longer (something was
1670      * received) the deadline is reset. */
1671     size_t	ch_wait_len;
1672 #ifdef WIN32
1673     DWORD	ch_deadline;
1674 #else
1675     struct timeval ch_deadline;
1676 #endif
1677     int		ch_block_write;	/* for testing: 0 when not used, -1 when write
1678 				 * does not block, 1 simulate blocking */
1679     int		ch_nonblocking;	/* write() is non-blocking */
1680     writeq_T	ch_writeque;	/* header for write queue */
1681 
1682     cbq_T	ch_cb_head;	/* dummy node for per-request callbacks */
1683     char_u	*ch_callback;	/* call when a msg is not handled */
1684     partial_T	*ch_partial;
1685 
1686     bufref_T	ch_bufref;	/* buffer to read from or write to */
1687     int		ch_nomodifiable; /* TRUE when buffer can be 'nomodifiable' */
1688     int		ch_nomod_error;	/* TRUE when e_modifiable was given */
1689     int		ch_buf_append;	/* write appended lines instead top-bot */
1690     linenr_T	ch_buf_top;	/* next line to send */
1691     linenr_T	ch_buf_bot;	/* last line to send */
1692 } chanpart_T;
1693 
1694 struct channel_S {
1695     channel_T	*ch_next;
1696     channel_T	*ch_prev;
1697 
1698     int		ch_id;		/* ID of the channel */
1699     int		ch_last_msg_id;	/* ID of the last message */
1700 
1701     chanpart_T	ch_part[PART_COUNT]; /* info for socket, out, err and in */
1702     int		ch_write_text_mode; /* write buffer lines with CR, not NL */
1703 
1704     char	*ch_hostname;	/* only for socket, allocated */
1705     int		ch_port;	/* only for socket */
1706 
1707     int		ch_to_be_closed; /* bitset of readable fds to be closed.
1708 				  * When all readable fds have been closed,
1709 				  * set to (1 << PART_COUNT). */
1710     int		ch_to_be_freed; /* When TRUE channel must be freed when it's
1711 				 * safe to invoke callbacks. */
1712     int		ch_error;	/* When TRUE an error was reported.  Avoids
1713 				 * giving pages full of error messages when
1714 				 * the other side has exited, only mention the
1715 				 * first error until the connection works
1716 				 * again. */
1717 
1718     void	(*ch_nb_close_cb)(void);
1719 				/* callback for Netbeans when channel is
1720 				 * closed */
1721 
1722 #ifdef WIN32
1723     int		ch_named_pipe;	/* using named pipe instead of pty */
1724 #endif
1725     char_u	*ch_callback;	/* call when any msg is not handled */
1726     partial_T	*ch_partial;
1727     char_u	*ch_close_cb;	/* call when channel is closed */
1728     partial_T	*ch_close_partial;
1729     int		ch_drop_never;
1730     int		ch_keep_open;	/* do not close on read error */
1731     int		ch_nonblock;
1732 
1733     job_T	*ch_job;	// Job that uses this channel; this does not
1734 				// count as a reference to avoid a circular
1735 				// reference, the job refers to the channel.
1736     int		ch_job_killed;	// TRUE when there was a job and it was killed
1737 				// or we know it died.
1738     int		ch_anonymous_pipe;  // ConPTY
1739     int		ch_killing;	    // TerminateJobObject() was called
1740 
1741     int		ch_refcount;	// reference count
1742     int		ch_copyID;
1743 };
1744 
1745 #define JO_MODE		    0x0001	/* channel mode */
1746 #define JO_IN_MODE	    0x0002	/* stdin mode */
1747 #define JO_OUT_MODE	    0x0004	/* stdout mode */
1748 #define JO_ERR_MODE	    0x0008	/* stderr mode */
1749 #define JO_CALLBACK	    0x0010	/* channel callback */
1750 #define JO_OUT_CALLBACK	    0x0020	/* stdout callback */
1751 #define JO_ERR_CALLBACK	    0x0040	/* stderr callback */
1752 #define JO_CLOSE_CALLBACK   0x0080	/* "close_cb" */
1753 #define JO_WAITTIME	    0x0100	/* only for ch_open() */
1754 #define JO_TIMEOUT	    0x0200	/* all timeouts */
1755 #define JO_OUT_TIMEOUT	    0x0400	/* stdout timeouts */
1756 #define JO_ERR_TIMEOUT	    0x0800	/* stderr timeouts */
1757 #define JO_PART		    0x1000	/* "part" */
1758 #define JO_ID		    0x2000	/* "id" */
1759 #define JO_STOPONEXIT	    0x4000	/* "stoponexit" */
1760 #define JO_EXIT_CB	    0x8000	/* "exit_cb" */
1761 #define JO_OUT_IO	    0x10000	/* "out_io" */
1762 #define JO_ERR_IO	    0x20000	/* "err_io" (JO_OUT_IO << 1) */
1763 #define JO_IN_IO	    0x40000	/* "in_io" (JO_OUT_IO << 2) */
1764 #define JO_OUT_NAME	    0x80000	/* "out_name" */
1765 #define JO_ERR_NAME	    0x100000	/* "err_name" (JO_OUT_NAME << 1) */
1766 #define JO_IN_NAME	    0x200000	/* "in_name" (JO_OUT_NAME << 2) */
1767 #define JO_IN_TOP	    0x400000	/* "in_top" */
1768 #define JO_IN_BOT	    0x800000	/* "in_bot" */
1769 #define JO_OUT_BUF	    0x1000000	/* "out_buf" */
1770 #define JO_ERR_BUF	    0x2000000	/* "err_buf" (JO_OUT_BUF << 1) */
1771 #define JO_IN_BUF	    0x4000000	/* "in_buf" (JO_OUT_BUF << 2) */
1772 #define JO_CHANNEL	    0x8000000	/* "channel" */
1773 #define JO_BLOCK_WRITE	    0x10000000	/* "block_write" */
1774 #define JO_OUT_MODIFIABLE   0x20000000	/* "out_modifiable" */
1775 #define JO_ERR_MODIFIABLE   0x40000000	/* "err_modifiable" (JO_OUT_ << 1) */
1776 #define JO_ALL		    0x7fffffff
1777 
1778 #define JO2_OUT_MSG	    0x0001	/* "out_msg" */
1779 #define JO2_ERR_MSG	    0x0002	/* "err_msg" (JO_OUT_ << 1) */
1780 #define JO2_TERM_NAME	    0x0004	/* "term_name" */
1781 #define JO2_TERM_FINISH	    0x0008	/* "term_finish" */
1782 #define JO2_ENV		    0x0010	/* "env" */
1783 #define JO2_CWD		    0x0020	/* "cwd" */
1784 #define JO2_TERM_ROWS	    0x0040	/* "term_rows" */
1785 #define JO2_TERM_COLS	    0x0080	/* "term_cols" */
1786 #define JO2_VERTICAL	    0x0100	/* "vertical" */
1787 #define JO2_CURWIN	    0x0200	/* "curwin" */
1788 #define JO2_HIDDEN	    0x0400	/* "hidden" */
1789 #define JO2_TERM_OPENCMD    0x0800	/* "term_opencmd" */
1790 #define JO2_EOF_CHARS	    0x1000	/* "eof_chars" */
1791 #define JO2_NORESTORE	    0x2000	/* "norestore" */
1792 #define JO2_TERM_KILL	    0x4000	/* "term_kill" */
1793 #define JO2_ANSI_COLORS	    0x8000	/* "ansi_colors" */
1794 #define JO2_TERM_MODE	    0x10000	/* "term_mode" */
1795 
1796 #define JO_MODE_ALL	(JO_MODE + JO_IN_MODE + JO_OUT_MODE + JO_ERR_MODE)
1797 #define JO_CB_ALL \
1798     (JO_CALLBACK + JO_OUT_CALLBACK + JO_ERR_CALLBACK + JO_CLOSE_CALLBACK)
1799 #define JO_TIMEOUT_ALL	(JO_TIMEOUT + JO_OUT_TIMEOUT + JO_ERR_TIMEOUT)
1800 
1801 /*
1802  * Options for job and channel commands.
1803  */
1804 typedef struct
1805 {
1806     int		jo_set;		/* JO_ bits for values that were set */
1807     int		jo_set2;	/* JO2_ bits for values that were set */
1808 
1809     ch_mode_T	jo_mode;
1810     ch_mode_T	jo_in_mode;
1811     ch_mode_T	jo_out_mode;
1812     ch_mode_T	jo_err_mode;
1813     int		jo_noblock;
1814 
1815     job_io_T	jo_io[4];	/* PART_OUT, PART_ERR, PART_IN */
1816     char_u	jo_io_name_buf[4][NUMBUFLEN];
1817     char_u	*jo_io_name[4];	/* not allocated! */
1818     int		jo_io_buf[4];
1819     int		jo_pty;
1820     int		jo_modifiable[4];
1821     int		jo_message[4];
1822     channel_T	*jo_channel;
1823 
1824     linenr_T	jo_in_top;
1825     linenr_T	jo_in_bot;
1826 
1827     char_u	*jo_callback;	/* not allocated! */
1828     partial_T	*jo_partial;	/* not referenced! */
1829     char_u	*jo_out_cb;	/* not allocated! */
1830     partial_T	*jo_out_partial; /* not referenced! */
1831     char_u	*jo_err_cb;	/* not allocated! */
1832     partial_T	*jo_err_partial; /* not referenced! */
1833     char_u	*jo_close_cb;	/* not allocated! */
1834     partial_T	*jo_close_partial; /* not referenced! */
1835     char_u	*jo_exit_cb;	/* not allocated! */
1836     partial_T	*jo_exit_partial; /* not referenced! */
1837     int		jo_drop_never;
1838     int		jo_waittime;
1839     int		jo_timeout;
1840     int		jo_out_timeout;
1841     int		jo_err_timeout;
1842     int		jo_block_write;	/* for testing only */
1843     int		jo_part;
1844     int		jo_id;
1845     char_u	jo_soe_buf[NUMBUFLEN];
1846     char_u	*jo_stoponexit;
1847     dict_T	*jo_env;	/* environment variables */
1848     char_u	jo_cwd_buf[NUMBUFLEN];
1849     char_u	*jo_cwd;
1850 
1851 #ifdef FEAT_TERMINAL
1852     /* when non-zero run the job in a terminal window of this size */
1853     int		jo_term_rows;
1854     int		jo_term_cols;
1855     int		jo_vertical;
1856     int		jo_curwin;
1857     int		jo_hidden;
1858     int		jo_term_norestore;
1859     char_u	*jo_term_name;
1860     char_u	*jo_term_opencmd;
1861     int		jo_term_finish;
1862     char_u	*jo_eof_chars;
1863     char_u	*jo_term_kill;
1864 # if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
1865     long_u	jo_ansi_colors[16];
1866 # endif
1867     int		jo_term_mode;	    // first character of "term_mode"
1868 #endif
1869 } jobopt_T;
1870 
1871 
1872 /* structure used for explicit stack while garbage collecting hash tables */
1873 typedef struct ht_stack_S
1874 {
1875     hashtab_T		*ht;
1876     struct ht_stack_S	*prev;
1877 } ht_stack_T;
1878 
1879 /* structure used for explicit stack while garbage collecting lists */
1880 typedef struct list_stack_S
1881 {
1882     list_T		*list;
1883     struct list_stack_S	*prev;
1884 } list_stack_T;
1885 
1886 /* values for b_syn_spell: what to do with toplevel text */
1887 #define SYNSPL_DEFAULT	0	/* spell check if @Spell not defined */
1888 #define SYNSPL_TOP	1	/* spell check toplevel text */
1889 #define SYNSPL_NOTOP	2	/* don't spell check toplevel text */
1890 
1891 /* avoid #ifdefs for when b_spell is not available */
1892 #ifdef FEAT_SPELL
1893 # define B_SPELL(buf)  ((buf)->b_spell)
1894 #else
1895 # define B_SPELL(buf)  (0)
1896 #endif
1897 
1898 #ifdef FEAT_QUICKFIX
1899 typedef struct qf_info_S qf_info_T;
1900 #endif
1901 
1902 #ifdef FEAT_PROFILE
1903 /*
1904  * Used for :syntime: timing of executing a syntax pattern.
1905  */
1906 typedef struct {
1907     proftime_T	total;		/* total time used */
1908     proftime_T	slowest;	/* time of slowest call */
1909     long	count;		/* nr of times used */
1910     long	match;		/* nr of times matched */
1911 } syn_time_T;
1912 #endif
1913 
1914 #ifdef FEAT_CRYPT
1915 /*
1916  * Structure to hold the type of encryption and the state of encryption or
1917  * decryption.
1918  */
1919 typedef struct {
1920     int	    method_nr;
1921     void    *method_state;  /* method-specific state information */
1922 } cryptstate_T;
1923 
1924 /* values for method_nr */
1925 # define CRYPT_M_ZIP	0
1926 # define CRYPT_M_BF	1
1927 # define CRYPT_M_BF2	2
1928 # define CRYPT_M_COUNT	3 /* number of crypt methods */
1929 
1930 // Currently all crypt methods work inplace.  If one is added that isn't then
1931 // define this.
1932 //  # define CRYPT_NOT_INPLACE 1
1933 #endif
1934 
1935 
1936 /*
1937  * These are items normally related to a buffer.  But when using ":ownsyntax"
1938  * a window may have its own instance.
1939  */
1940 typedef struct {
1941 #ifdef FEAT_SYN_HL
1942     hashtab_T	b_keywtab;		/* syntax keywords hash table */
1943     hashtab_T	b_keywtab_ic;		/* idem, ignore case */
1944     int		b_syn_error;		/* TRUE when error occurred in HL */
1945 # ifdef FEAT_RELTIME
1946     int		b_syn_slow;		/* TRUE when 'redrawtime' reached */
1947 # endif
1948     int		b_syn_ic;		/* ignore case for :syn cmds */
1949     int		b_syn_spell;		/* SYNSPL_ values */
1950     garray_T	b_syn_patterns;		/* table for syntax patterns */
1951     garray_T	b_syn_clusters;		/* table for syntax clusters */
1952     int		b_spell_cluster_id;	/* @Spell cluster ID or 0 */
1953     int		b_nospell_cluster_id;	/* @NoSpell cluster ID or 0 */
1954     int		b_syn_containedin;	/* TRUE when there is an item with a
1955 					   "containedin" argument */
1956     int		b_syn_sync_flags;	/* flags about how to sync */
1957     short	b_syn_sync_id;		/* group to sync on */
1958     long	b_syn_sync_minlines;	/* minimal sync lines offset */
1959     long	b_syn_sync_maxlines;	/* maximal sync lines offset */
1960     long	b_syn_sync_linebreaks;	/* offset for multi-line pattern */
1961     char_u	*b_syn_linecont_pat;	/* line continuation pattern */
1962     regprog_T	*b_syn_linecont_prog;	/* line continuation program */
1963 #ifdef FEAT_PROFILE
1964     syn_time_T  b_syn_linecont_time;
1965 #endif
1966     int		b_syn_linecont_ic;	/* ignore-case flag for above */
1967     int		b_syn_topgrp;		/* for ":syntax include" */
1968 # ifdef FEAT_CONCEAL
1969     int		b_syn_conceal;		/* auto-conceal for :syn cmds */
1970 # endif
1971 # ifdef FEAT_FOLDING
1972     int		b_syn_folditems;	/* number of patterns with the HL_FOLD
1973 					   flag set */
1974 # endif
1975     /*
1976      * b_sst_array[] contains the state stack for a number of lines, for the
1977      * start of that line (col == 0).  This avoids having to recompute the
1978      * syntax state too often.
1979      * b_sst_array[] is allocated to hold the state for all displayed lines,
1980      * and states for 1 out of about 20 other lines.
1981      * b_sst_array	pointer to an array of synstate_T
1982      * b_sst_len	number of entries in b_sst_array[]
1983      * b_sst_first	pointer to first used entry in b_sst_array[] or NULL
1984      * b_sst_firstfree	pointer to first free entry in b_sst_array[] or NULL
1985      * b_sst_freecount	number of free entries in b_sst_array[]
1986      * b_sst_check_lnum	entries after this lnum need to be checked for
1987      *			validity (MAXLNUM means no check needed)
1988      */
1989     synstate_T	*b_sst_array;
1990     int		b_sst_len;
1991     synstate_T	*b_sst_first;
1992     synstate_T	*b_sst_firstfree;
1993     int		b_sst_freecount;
1994     linenr_T	b_sst_check_lnum;
1995     short_u	b_sst_lasttick;	/* last display tick */
1996 #endif /* FEAT_SYN_HL */
1997 
1998 #ifdef FEAT_SPELL
1999     /* for spell checking */
2000     garray_T	b_langp;	/* list of pointers to slang_T, see spell.c */
2001     char_u	b_spell_ismw[256];/* flags: is midword char */
2002     char_u	*b_spell_ismw_mb; /* multi-byte midword chars */
2003     char_u	*b_p_spc;	/* 'spellcapcheck' */
2004     regprog_T	*b_cap_prog;	/* program for 'spellcapcheck' */
2005     char_u	*b_p_spf;	/* 'spellfile' */
2006     char_u	*b_p_spl;	/* 'spelllang' */
2007     int		b_cjk;		/* all CJK letters as OK */
2008 #endif
2009 #if !defined(FEAT_SYN_HL) && !defined(FEAT_SPELL)
2010     int		dummy;
2011 #endif
2012     char_u	b_syn_chartab[32];	/* syntax iskeyword option */
2013     char_u	*b_syn_isk;		/* iskeyword option */
2014 } synblock_T;
2015 
2016 
2017 /*
2018  * buffer: structure that holds information about one file
2019  *
2020  * Several windows can share a single Buffer
2021  * A buffer is unallocated if there is no memfile for it.
2022  * A buffer is new if the associated file has never been loaded yet.
2023  */
2024 
2025 struct file_buffer
2026 {
2027     memline_T	b_ml;		/* associated memline (also contains line
2028 				   count) */
2029 
2030     buf_T	*b_next;	/* links in list of buffers */
2031     buf_T	*b_prev;
2032 
2033     int		b_nwindows;	/* nr of windows open on this buffer */
2034 
2035     int		b_flags;	/* various BF_ flags */
2036     int		b_locked;	/* Buffer is being closed or referenced, don't
2037 				   let autocommands wipe it out. */
2038 
2039     /*
2040      * b_ffname has the full path of the file (NULL for no name).
2041      * b_sfname is the name as the user typed it (or NULL).
2042      * b_fname is the same as b_sfname, unless ":cd" has been done,
2043      *		then it is the same as b_ffname (NULL for no name).
2044      */
2045     char_u	*b_ffname;	// full path file name, allocated
2046     char_u	*b_sfname;	// short file name, allocated, may be equal to
2047 				// b_ffname
2048     char_u	*b_fname;	// current file name, points to b_ffname or
2049 				// b_sfname
2050 
2051 #ifdef UNIX
2052     int		b_dev_valid;	/* TRUE when b_dev has a valid number */
2053     dev_t	b_dev;		/* device number */
2054     ino_t	b_ino;		/* inode number */
2055 #endif
2056 #ifdef FEAT_CW_EDITOR
2057     FSSpec	b_FSSpec;	/* MacOS File Identification */
2058 #endif
2059 #ifdef VMS
2060     char	 b_fab_rfm;	/* Record format    */
2061     char	 b_fab_rat;	/* Record attribute */
2062     unsigned int b_fab_mrs;	/* Max record size  */
2063 #endif
2064     int		b_fnum;		/* buffer number for this file. */
2065     char_u	b_key[VIM_SIZEOF_INT * 2 + 1];
2066 				/* key used for buf_hashtab, holds b_fnum as
2067 				   hex string */
2068 
2069     int		b_changed;	/* 'modified': Set to TRUE if something in the
2070 				   file has been changed and not written out. */
2071     dictitem16_T b_ct_di;	/* holds the b:changedtick value in
2072 				   b_ct_di.di_tv.vval.v_number;
2073 				   incremented for each change, also for undo */
2074 #define CHANGEDTICK(buf) ((buf)->b_ct_di.di_tv.vval.v_number)
2075 
2076     varnumber_T	b_last_changedtick; /* b:changedtick when TextChanged or
2077 				       TextChangedI was last triggered. */
2078 #ifdef FEAT_INS_EXPAND
2079     varnumber_T	b_last_changedtick_pum; /* b:changedtick when TextChangedP was
2080 					   last triggered. */
2081 #endif
2082 
2083     int		b_saving;	/* Set to TRUE if we are in the middle of
2084 				   saving the buffer. */
2085 
2086     /*
2087      * Changes to a buffer require updating of the display.  To minimize the
2088      * work, remember changes made and update everything at once.
2089      */
2090     int		b_mod_set;	/* TRUE when there are changes since the last
2091 				   time the display was updated */
2092     linenr_T	b_mod_top;	/* topmost lnum that was changed */
2093     linenr_T	b_mod_bot;	/* lnum below last changed line, AFTER the
2094 				   change */
2095     long	b_mod_xlines;	/* number of extra buffer lines inserted;
2096 				   negative when lines were deleted */
2097 
2098     wininfo_T	*b_wininfo;	/* list of last used info for each window */
2099 
2100     long	b_mtime;	/* last change time of original file */
2101     long	b_mtime_read;	/* last change time when reading */
2102     off_T	b_orig_size;	/* size of original file in bytes */
2103     int		b_orig_mode;	/* mode of original file */
2104 #ifdef FEAT_VIMINFO
2105     time_T	b_last_used;	/* time when the buffer was last used; used
2106 				 * for viminfo */
2107 #endif
2108 
2109     pos_T	b_namedm[NMARKS]; /* current named marks (mark.c) */
2110 
2111     /* These variables are set when VIsual_active becomes FALSE */
2112     visualinfo_T b_visual;
2113 #ifdef FEAT_EVAL
2114     int		b_visual_mode_eval;  /* b_visual.vi_mode for visualmode() */
2115 #endif
2116 
2117     pos_T	b_last_cursor;	/* cursor position when last unloading this
2118 				   buffer */
2119     pos_T	b_last_insert;	/* where Insert mode was left */
2120     pos_T	b_last_change;	/* position of last change: '. mark */
2121 
2122 #ifdef FEAT_JUMPLIST
2123     /*
2124      * the changelist contains old change positions
2125      */
2126     pos_T	b_changelist[JUMPLISTSIZE];
2127     int		b_changelistlen;	/* number of active entries */
2128     int		b_new_change;		/* set by u_savecommon() */
2129 #endif
2130 
2131     /*
2132      * Character table, only used in charset.c for 'iskeyword'
2133      * 32 bytes of 8 bits: 1 bit per character 0-255.
2134      */
2135     char_u	b_chartab[32];
2136 
2137 #ifdef FEAT_LOCALMAP
2138     /* Table used for mappings local to a buffer. */
2139     mapblock_T	*(b_maphash[256]);
2140 
2141     /* First abbreviation local to a buffer. */
2142     mapblock_T	*b_first_abbr;
2143 #endif
2144 #ifdef FEAT_USR_CMDS
2145     /* User commands local to the buffer. */
2146     garray_T	b_ucmds;
2147 #endif
2148     /*
2149      * start and end of an operator, also used for '[ and ']
2150      */
2151     pos_T	b_op_start;
2152     pos_T	b_op_start_orig;  /* used for Insstart_orig */
2153     pos_T	b_op_end;
2154 
2155 #ifdef FEAT_VIMINFO
2156     int		b_marks_read;	/* Have we read viminfo marks yet? */
2157 #endif
2158 
2159     /*
2160      * The following only used in undo.c.
2161      */
2162     u_header_T	*b_u_oldhead;	/* pointer to oldest header */
2163     u_header_T	*b_u_newhead;	/* pointer to newest header; may not be valid
2164 				   if b_u_curhead is not NULL */
2165     u_header_T	*b_u_curhead;	/* pointer to current header */
2166     int		b_u_numhead;	/* current number of headers */
2167     int		b_u_synced;	/* entry lists are synced */
2168     long	b_u_seq_last;	/* last used undo sequence number */
2169     long	b_u_save_nr_last; /* counter for last file write */
2170     long	b_u_seq_cur;	/* hu_seq of header below which we are now */
2171     time_T	b_u_time_cur;	/* uh_time of header below which we are now */
2172     long	b_u_save_nr_cur; /* file write nr after which we are now */
2173 
2174     /*
2175      * variables for "U" command in undo.c
2176      */
2177     undoline_T	b_u_line_ptr;	/* saved line for "U" command */
2178     linenr_T	b_u_line_lnum;	/* line number of line in u_line */
2179     colnr_T	b_u_line_colnr;	/* optional column number */
2180 
2181 #ifdef FEAT_INS_EXPAND
2182     int		b_scanned;	/* ^N/^P have scanned this buffer */
2183 #endif
2184 
2185     /* flags for use of ":lmap" and IM control */
2186     long	b_p_iminsert;	/* input mode for insert */
2187     long	b_p_imsearch;	/* input mode for search */
2188 #define B_IMODE_USE_INSERT -1	/*	Use b_p_iminsert value for search */
2189 #define B_IMODE_NONE 0		/*	Input via none */
2190 #define B_IMODE_LMAP 1		/*	Input via langmap */
2191 #define B_IMODE_IM 2		/*	Input via input method */
2192 #define B_IMODE_LAST 2
2193 
2194 #ifdef FEAT_KEYMAP
2195     short	b_kmap_state;	/* using "lmap" mappings */
2196 # define KEYMAP_INIT	1	/* 'keymap' was set, call keymap_init() */
2197 # define KEYMAP_LOADED	2	/* 'keymap' mappings have been loaded */
2198     garray_T	b_kmap_ga;	/* the keymap table */
2199 #endif
2200 
2201     /*
2202      * Options local to a buffer.
2203      * They are here because their value depends on the type of file
2204      * or contents of the file being edited.
2205      */
2206     int		b_p_initialized;	/* set when options initialized */
2207 
2208 #ifdef FEAT_EVAL
2209     sctx_T	b_p_script_ctx[BV_COUNT];	/* SCTXs for buffer-local options */
2210 #endif
2211 
2212     int		b_p_ai;		/* 'autoindent' */
2213     int		b_p_ai_nopaste;	/* b_p_ai saved for paste mode */
2214     char_u	*b_p_bkc;	/* 'backupcopy' */
2215     unsigned	b_bkc_flags;    /* flags for 'backupcopy' */
2216     int		b_p_ci;		/* 'copyindent' */
2217     int		b_p_bin;	/* 'binary' */
2218     int		b_p_bomb;	/* 'bomb' */
2219     char_u	*b_p_bh;	/* 'bufhidden' */
2220     char_u	*b_p_bt;	/* 'buftype' */
2221 #ifdef FEAT_QUICKFIX
2222 #define BUF_HAS_QF_ENTRY 1
2223 #define BUF_HAS_LL_ENTRY 2
2224     int		b_has_qf_entry;
2225 #endif
2226     int		b_p_bl;		/* 'buflisted' */
2227 #ifdef FEAT_CINDENT
2228     int		b_p_cin;	/* 'cindent' */
2229     char_u	*b_p_cino;	/* 'cinoptions' */
2230     char_u	*b_p_cink;	/* 'cinkeys' */
2231 #endif
2232 #if defined(FEAT_CINDENT) || defined(FEAT_SMARTINDENT)
2233     char_u	*b_p_cinw;	/* 'cinwords' */
2234 #endif
2235 #ifdef FEAT_COMMENTS
2236     char_u	*b_p_com;	/* 'comments' */
2237 #endif
2238 #ifdef FEAT_FOLDING
2239     char_u	*b_p_cms;	/* 'commentstring' */
2240 #endif
2241 #ifdef FEAT_INS_EXPAND
2242     char_u	*b_p_cpt;	/* 'complete' */
2243 #endif
2244 #ifdef FEAT_COMPL_FUNC
2245     char_u	*b_p_cfu;	/* 'completefunc' */
2246     char_u	*b_p_ofu;	/* 'omnifunc' */
2247 #endif
2248     int		b_p_eol;	/* 'endofline' */
2249     int		b_p_fixeol;	/* 'fixendofline' */
2250     int		b_p_et;		/* 'expandtab' */
2251     int		b_p_et_nobin;	/* b_p_et saved for binary mode */
2252     int	        b_p_et_nopaste; /* b_p_et saved for paste mode */
2253     char_u	*b_p_fenc;	/* 'fileencoding' */
2254     char_u	*b_p_ff;	/* 'fileformat' */
2255     char_u	*b_p_ft;	/* 'filetype' */
2256     char_u	*b_p_fo;	/* 'formatoptions' */
2257     char_u	*b_p_flp;	/* 'formatlistpat' */
2258     int		b_p_inf;	/* 'infercase' */
2259     char_u	*b_p_isk;	/* 'iskeyword' */
2260 #ifdef FEAT_FIND_ID
2261     char_u	*b_p_def;	/* 'define' local value */
2262     char_u	*b_p_inc;	/* 'include' */
2263 # ifdef FEAT_EVAL
2264     char_u	*b_p_inex;	/* 'includeexpr' */
2265     long_u	b_p_inex_flags;	/* flags for 'includeexpr' */
2266 # endif
2267 #endif
2268 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
2269     char_u	*b_p_inde;	/* 'indentexpr' */
2270     long_u	b_p_inde_flags;	/* flags for 'indentexpr' */
2271     char_u	*b_p_indk;	/* 'indentkeys' */
2272 #endif
2273     char_u	*b_p_fp;	/* 'formatprg' */
2274 #if defined(FEAT_EVAL)
2275     char_u	*b_p_fex;	/* 'formatexpr' */
2276     long_u	b_p_fex_flags;	/* flags for 'formatexpr' */
2277 #endif
2278 #ifdef FEAT_CRYPT
2279     char_u	*b_p_key;	/* 'key' */
2280 #endif
2281     char_u	*b_p_kp;	/* 'keywordprg' */
2282 #ifdef FEAT_LISP
2283     int		b_p_lisp;	/* 'lisp' */
2284 #endif
2285     char_u	*b_p_menc;	/* 'makeencoding' */
2286     char_u	*b_p_mps;	/* 'matchpairs' */
2287     int		b_p_ml;		/* 'modeline' */
2288     int		b_p_ml_nobin;	/* b_p_ml saved for binary mode */
2289     int		b_p_ma;		/* 'modifiable' */
2290     char_u	*b_p_nf;	/* 'nrformats' */
2291     int		b_p_pi;		/* 'preserveindent' */
2292 #ifdef FEAT_TEXTOBJ
2293     char_u	*b_p_qe;	/* 'quoteescape' */
2294 #endif
2295     int		b_p_ro;		/* 'readonly' */
2296     long	b_p_sw;		/* 'shiftwidth' */
2297     int		b_p_sn;		/* 'shortname' */
2298 #ifdef FEAT_SMARTINDENT
2299     int		b_p_si;		/* 'smartindent' */
2300 #endif
2301     long	b_p_sts;	/* 'softtabstop' */
2302     long	b_p_sts_nopaste; /* b_p_sts saved for paste mode */
2303 #ifdef FEAT_SEARCHPATH
2304     char_u	*b_p_sua;	/* 'suffixesadd' */
2305 #endif
2306     int		b_p_swf;	/* 'swapfile' */
2307 #ifdef FEAT_SYN_HL
2308     long	b_p_smc;	/* 'synmaxcol' */
2309     char_u	*b_p_syn;	/* 'syntax' */
2310 #endif
2311     long	b_p_ts;		/* 'tabstop' */
2312     int		b_p_tx;		/* 'textmode' */
2313     long	b_p_tw;		/* 'textwidth' */
2314     long	b_p_tw_nobin;	/* b_p_tw saved for binary mode */
2315     long	b_p_tw_nopaste;	/* b_p_tw saved for paste mode */
2316     long	b_p_wm;		/* 'wrapmargin' */
2317     long	b_p_wm_nobin;	/* b_p_wm saved for binary mode */
2318     long	b_p_wm_nopaste;	/* b_p_wm saved for paste mode */
2319 #ifdef FEAT_VARTABS
2320     char_u	*b_p_vsts;	/* 'varsofttabstop' */
2321     int		*b_p_vsts_array;   /* 'varsofttabstop' in internal format */
2322     char_u	*b_p_vsts_nopaste; /* b_p_vsts saved for paste mode */
2323     char_u	*b_p_vts;	/* 'vartabstop' */
2324     int		*b_p_vts_array;	/* 'vartabstop' in internal format */
2325 #endif
2326 #ifdef FEAT_KEYMAP
2327     char_u	*b_p_keymap;	/* 'keymap' */
2328 #endif
2329 
2330     /* local values for options which are normally global */
2331 #ifdef FEAT_QUICKFIX
2332     char_u	*b_p_gp;	/* 'grepprg' local value */
2333     char_u	*b_p_mp;	/* 'makeprg' local value */
2334     char_u	*b_p_efm;	/* 'errorformat' local value */
2335 #endif
2336     char_u	*b_p_ep;	/* 'equalprg' local value */
2337     char_u	*b_p_path;	/* 'path' local value */
2338     int		b_p_ar;		/* 'autoread' local value */
2339     char_u	*b_p_tags;	/* 'tags' local value */
2340     char_u	*b_p_tc;	/* 'tagcase' local value */
2341     unsigned	b_tc_flags;     /* flags for 'tagcase' */
2342 #ifdef FEAT_INS_EXPAND
2343     char_u	*b_p_dict;	/* 'dictionary' local value */
2344     char_u	*b_p_tsr;	/* 'thesaurus' local value */
2345 #endif
2346     long	b_p_ul;		/* 'undolevels' local value */
2347 #ifdef FEAT_PERSISTENT_UNDO
2348     int		b_p_udf;	/* 'undofile' */
2349 #endif
2350 #ifdef FEAT_LISP
2351     char_u	*b_p_lw;	/* 'lispwords' local value */
2352 #endif
2353 #ifdef FEAT_TERMINAL
2354     long	b_p_twsl;	/* 'termwinscroll' */
2355 #endif
2356 
2357     /* end of buffer options */
2358 
2359 #ifdef FEAT_CINDENT
2360     /* values set from b_p_cino */
2361     int		b_ind_level;
2362     int		b_ind_open_imag;
2363     int		b_ind_no_brace;
2364     int		b_ind_first_open;
2365     int		b_ind_open_extra;
2366     int		b_ind_close_extra;
2367     int		b_ind_open_left_imag;
2368     int		b_ind_jump_label;
2369     int		b_ind_case;
2370     int		b_ind_case_code;
2371     int		b_ind_case_break;
2372     int		b_ind_param;
2373     int		b_ind_func_type;
2374     int		b_ind_comment;
2375     int		b_ind_in_comment;
2376     int		b_ind_in_comment2;
2377     int		b_ind_cpp_baseclass;
2378     int		b_ind_continuation;
2379     int		b_ind_unclosed;
2380     int		b_ind_unclosed2;
2381     int		b_ind_unclosed_noignore;
2382     int		b_ind_unclosed_wrapped;
2383     int		b_ind_unclosed_whiteok;
2384     int		b_ind_matching_paren;
2385     int		b_ind_paren_prev;
2386     int		b_ind_maxparen;
2387     int		b_ind_maxcomment;
2388     int		b_ind_scopedecl;
2389     int		b_ind_scopedecl_code;
2390     int		b_ind_java;
2391     int		b_ind_js;
2392     int		b_ind_keep_case_label;
2393     int		b_ind_hash_comment;
2394     int		b_ind_cpp_namespace;
2395     int		b_ind_if_for_while;
2396     int		b_ind_cpp_extern_c;
2397 #endif
2398 
2399     linenr_T	b_no_eol_lnum;	/* non-zero lnum when last line of next binary
2400 				 * write should not have an end-of-line */
2401 
2402     int		b_start_eol;	/* last line had eol when it was read */
2403     int		b_start_ffc;	/* first char of 'ff' when edit started */
2404     char_u	*b_start_fenc;	/* 'fileencoding' when edit started or NULL */
2405     int		b_bad_char;	/* "++bad=" argument when edit started or 0 */
2406     int		b_start_bomb;	/* 'bomb' when it was read */
2407 
2408 #ifdef FEAT_EVAL
2409     dictitem_T	b_bufvar;	/* variable for "b:" Dictionary */
2410     dict_T	*b_vars;	/* internal variables, local to buffer */
2411 #endif
2412 #ifdef FEAT_TEXT_PROP
2413     int		b_has_textprop;	// TRUE when text props were added
2414     hashtab_T	*b_proptypes;	// text property types local to buffer
2415 #endif
2416 
2417 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
2418     char_u	*b_p_bexpr;	/* 'balloonexpr' local value */
2419     long_u	b_p_bexpr_flags;/* flags for 'balloonexpr' */
2420 #endif
2421 #ifdef FEAT_CRYPT
2422     char_u	*b_p_cm;	/* 'cryptmethod' */
2423 #endif
2424 
2425     /* When a buffer is created, it starts without a swap file.  b_may_swap is
2426      * then set to indicate that a swap file may be opened later.  It is reset
2427      * if a swap file could not be opened.
2428      */
2429     int		b_may_swap;
2430     int		b_did_warn;	/* Set to 1 if user has been warned on first
2431 				   change of a read-only file */
2432 
2433     /* Two special kinds of buffers:
2434      * help buffer  - used for help files, won't use a swap file.
2435      * spell buffer - used for spell info, never displayed and doesn't have a
2436      *		      file name.
2437      */
2438     int		b_help;		/* TRUE for help file buffer (when set b_p_bt
2439 				   is "help") */
2440 #ifdef FEAT_SPELL
2441     int		b_spell;	/* TRUE for a spell file buffer, most fields
2442 				   are not used!  Use the B_SPELL macro to
2443 				   access b_spell without #ifdef. */
2444 #endif
2445 
2446     int		b_shortname;	/* this file has an 8.3 file name */
2447 
2448 #ifdef FEAT_JOB_CHANNEL
2449     char_u	*b_prompt_text;	     // set by prompt_setprompt()
2450     char_u	*b_prompt_callback;  // set by prompt_setcallback()
2451     partial_T	*b_prompt_partial;   // set by prompt_setcallback()
2452     char_u	*b_prompt_interrupt;   // set by prompt_setinterrupt()
2453     partial_T	*b_prompt_int_partial; // set by prompt_setinterrupt()
2454     int		b_prompt_insert;     // value for restart_edit when entering
2455 				     // a prompt buffer window.
2456 #endif
2457 #ifdef FEAT_MZSCHEME
2458     void	*b_mzscheme_ref; /* The MzScheme reference to this buffer */
2459 #endif
2460 
2461 #ifdef FEAT_PERL
2462     void	*b_perl_private;
2463 #endif
2464 
2465 #ifdef FEAT_PYTHON
2466     void	*b_python_ref;	/* The Python reference to this buffer */
2467 #endif
2468 
2469 #ifdef FEAT_PYTHON3
2470     void	*b_python3_ref;	/* The Python3 reference to this buffer */
2471 #endif
2472 
2473 #ifdef FEAT_TCL
2474     void	*b_tcl_ref;
2475 #endif
2476 
2477 #ifdef FEAT_RUBY
2478     void	*b_ruby_ref;
2479 #endif
2480 
2481 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL)
2482     synblock_T	b_s;		/* Info related to syntax highlighting.  w_s
2483 				 * normally points to this, but some windows
2484 				 * may use a different synblock_T. */
2485 #endif
2486 
2487 #ifdef FEAT_SIGNS
2488     signlist_T	*b_signlist;	/* list of signs to draw */
2489 # ifdef FEAT_NETBEANS_INTG
2490     int		b_has_sign_column; /* Flag that is set when a first sign is
2491 				    * added and remains set until the end of
2492 				    * the netbeans session. */
2493 # endif
2494 #endif
2495 
2496 #ifdef FEAT_NETBEANS_INTG
2497     int		b_netbeans_file;    /* TRUE when buffer is owned by NetBeans */
2498     int		b_was_netbeans_file;/* TRUE if b_netbeans_file was once set */
2499 #endif
2500 #ifdef FEAT_JOB_CHANNEL
2501     int		b_write_to_channel; /* TRUE when appended lines are written to
2502 				     * a channel. */
2503 #endif
2504 
2505 #ifdef FEAT_CRYPT
2506     cryptstate_T *b_cryptstate;	/* Encryption state while reading or writing
2507 				 * the file. NULL when not using encryption. */
2508 #endif
2509     int		b_mapped_ctrl_c; /* modes where CTRL-C is mapped */
2510 
2511 #ifdef FEAT_TERMINAL
2512     term_T	*b_term;	/* When not NULL this buffer is for a terminal
2513 				 * window. */
2514 #endif
2515 #ifdef FEAT_DIFF
2516     int		b_diff_failed;	// internal diff failed for this buffer
2517 #endif
2518 }; /* file_buffer */
2519 
2520 
2521 #ifdef FEAT_DIFF
2522 /*
2523  * Stuff for diff mode.
2524  */
2525 # define DB_COUNT 8	/* up to eight buffers can be diff'ed */
2526 
2527 /*
2528  * Each diffblock defines where a block of lines starts in each of the buffers
2529  * and how many lines it occupies in that buffer.  When the lines are missing
2530  * in the buffer the df_count[] is zero.  This is all counted in
2531  * buffer lines.
2532  * There is always at least one unchanged line in between the diffs.
2533  * Otherwise it would have been included in the diff above or below it.
2534  * df_lnum[] + df_count[] is the lnum below the change.  When in one buffer
2535  * lines have been inserted, in the other buffer df_lnum[] is the line below
2536  * the insertion and df_count[] is zero.  When appending lines at the end of
2537  * the buffer, df_lnum[] is one beyond the end!
2538  * This is using a linked list, because the number of differences is expected
2539  * to be reasonable small.  The list is sorted on lnum.
2540  */
2541 typedef struct diffblock_S diff_T;
2542 struct diffblock_S
2543 {
2544     diff_T	*df_next;
2545     linenr_T	df_lnum[DB_COUNT];	/* line number in buffer */
2546     linenr_T	df_count[DB_COUNT];	/* nr of inserted/changed lines */
2547 };
2548 #endif
2549 
2550 #define SNAP_HELP_IDX	0
2551 #define SNAP_AUCMD_IDX 1
2552 #define SNAP_COUNT	2
2553 
2554 /*
2555  * Tab pages point to the top frame of each tab page.
2556  * Note: Most values are NOT valid for the current tab page!  Use "curwin",
2557  * "firstwin", etc. for that.  "tp_topframe" is always valid and can be
2558  * compared against "topframe" to find the current tab page.
2559  */
2560 typedef struct tabpage_S tabpage_T;
2561 struct tabpage_S
2562 {
2563     tabpage_T	    *tp_next;	    /* next tabpage or NULL */
2564     frame_T	    *tp_topframe;   /* topframe for the windows */
2565     win_T	    *tp_curwin;	    /* current window in this Tab page */
2566     win_T	    *tp_prevwin;    /* previous window in this Tab page */
2567     win_T	    *tp_firstwin;   /* first window in this Tab page */
2568     win_T	    *tp_lastwin;    /* last window in this Tab page */
2569     long	    tp_old_Rows;    /* Rows when Tab page was left */
2570     long	    tp_old_Columns; /* Columns when Tab page was left */
2571     long	    tp_ch_used;	    /* value of 'cmdheight' when frame size
2572 				       was set */
2573 #ifdef FEAT_GUI
2574     int		    tp_prev_which_scrollbars[3];
2575 				    /* previous value of which_scrollbars */
2576 #endif
2577 #ifdef FEAT_DIFF
2578     diff_T	    *tp_first_diff;
2579     buf_T	    *(tp_diffbuf[DB_COUNT]);
2580     int		    tp_diff_invalid;	// list of diffs is outdated
2581     int		    tp_diff_update;	// update diffs before redrawing
2582 #endif
2583     frame_T	    *(tp_snapshot[SNAP_COUNT]);  /* window layout snapshots */
2584 #ifdef FEAT_EVAL
2585     dictitem_T	    tp_winvar;	    /* variable for "t:" Dictionary */
2586     dict_T	    *tp_vars;	    /* internal variables, local to tab page */
2587 #endif
2588 
2589 #ifdef FEAT_PYTHON
2590     void	    *tp_python_ref;	/* The Python value for this tab page */
2591 #endif
2592 
2593 #ifdef FEAT_PYTHON3
2594     void	    *tp_python3_ref;	/* The Python value for this tab page */
2595 #endif
2596 };
2597 
2598 /*
2599  * Structure to cache info for displayed lines in w_lines[].
2600  * Each logical line has one entry.
2601  * The entry tells how the logical line is currently displayed in the window.
2602  * This is updated when displaying the window.
2603  * When the display is changed (e.g., when clearing the screen) w_lines_valid
2604  * is changed to exclude invalid entries.
2605  * When making changes to the buffer, wl_valid is reset to indicate wl_size
2606  * may not reflect what is actually in the buffer.  When wl_valid is FALSE,
2607  * the entries can only be used to count the number of displayed lines used.
2608  * wl_lnum and wl_lastlnum are invalid too.
2609  */
2610 typedef struct w_line
2611 {
2612     linenr_T	wl_lnum;	/* buffer line number for logical line */
2613     short_u	wl_size;	/* height in screen lines */
2614     char	wl_valid;	/* TRUE values are valid for text in buffer */
2615 #ifdef FEAT_FOLDING
2616     char	wl_folded;	/* TRUE when this is a range of folded lines */
2617     linenr_T	wl_lastlnum;	/* last buffer line number for logical line */
2618 #endif
2619 } wline_T;
2620 
2621 /*
2622  * Windows are kept in a tree of frames.  Each frame has a column (FR_COL)
2623  * or row (FR_ROW) layout or is a leaf, which has a window.
2624  */
2625 struct frame_S
2626 {
2627     char	fr_layout;	/* FR_LEAF, FR_COL or FR_ROW */
2628     int		fr_width;
2629     int		fr_newwidth;	/* new width used in win_equal_rec() */
2630     int		fr_height;
2631     int		fr_newheight;	/* new height used in win_equal_rec() */
2632     frame_T	*fr_parent;	/* containing frame or NULL */
2633     frame_T	*fr_next;	/* frame right or below in same parent, NULL
2634 				   for first */
2635     frame_T	*fr_prev;	/* frame left or above in same parent, NULL
2636 				   for last */
2637     /* fr_child and fr_win are mutually exclusive */
2638     frame_T	*fr_child;	/* first contained frame */
2639     win_T	*fr_win;	/* window that fills this frame */
2640 };
2641 
2642 #define FR_LEAF	0	/* frame is a leaf */
2643 #define FR_ROW	1	/* frame with a row of windows */
2644 #define FR_COL	2	/* frame with a column of windows */
2645 
2646 /*
2647  * Struct used for highlighting 'hlsearch' matches, matches defined by
2648  * ":match" and matches defined by match functions.
2649  * For 'hlsearch' there is one pattern for all windows.  For ":match" and the
2650  * match functions there is a different pattern for each window.
2651  */
2652 typedef struct
2653 {
2654     regmmatch_T	rm;	/* points to the regexp program; contains last found
2655 			   match (may continue in next line) */
2656     buf_T	*buf;	/* the buffer to search for a match */
2657     linenr_T	lnum;	/* the line to search for a match */
2658     int		attr;	/* attributes to be used for a match */
2659     int		attr_cur; /* attributes currently active in win_line() */
2660     linenr_T	first_lnum;	/* first lnum to search for multi-line pat */
2661     colnr_T	startcol; /* in win_line() points to char where HL starts */
2662     colnr_T	endcol;	 /* in win_line() points to char where HL ends */
2663     int		is_addpos;	/* position specified directly by
2664 				   matchaddpos(). TRUE/FALSE */
2665 #ifdef FEAT_RELTIME
2666     proftime_T	tm;	/* for a time limit */
2667 #endif
2668 } match_T;
2669 
2670 /* number of positions supported by matchaddpos() */
2671 #define MAXPOSMATCH 8
2672 
2673 /*
2674  * Same as lpos_T, but with additional field len.
2675  */
2676 typedef struct
2677 {
2678     linenr_T	lnum;	/* line number */
2679     colnr_T	col;	/* column number */
2680     int		len;	/* length: 0 - to the end of line */
2681 } llpos_T;
2682 
2683 /*
2684  * posmatch_T provides an array for storing match items for matchaddpos()
2685  * function.
2686  */
2687 typedef struct posmatch posmatch_T;
2688 struct posmatch
2689 {
2690     llpos_T	pos[MAXPOSMATCH];	/* array of positions */
2691     int		cur;			/* internal position counter */
2692     linenr_T	toplnum;		/* top buffer line */
2693     linenr_T	botlnum;		/* bottom buffer line */
2694 };
2695 
2696 /*
2697  * matchitem_T provides a linked list for storing match items for ":match" and
2698  * the match functions.
2699  */
2700 typedef struct matchitem matchitem_T;
2701 struct matchitem
2702 {
2703     matchitem_T	*next;
2704     int		id;	    /* match ID */
2705     int		priority;   /* match priority */
2706     char_u	*pattern;   /* pattern to highlight */
2707     int		hlg_id;	    /* highlight group ID */
2708     regmmatch_T	match;	    /* regexp program for pattern */
2709     posmatch_T	pos;	    /* position matches */
2710     match_T	hl;	    /* struct for doing the actual highlighting */
2711 #ifdef FEAT_CONCEAL
2712     int		conceal_char; /* cchar for Conceal highlighting */
2713 #endif
2714 };
2715 
2716 #ifdef FEAT_MENU
2717 typedef struct {
2718     int		wb_startcol;
2719     int		wb_endcol;
2720     vimmenu_T	*wb_menu;
2721 } winbar_item_T;
2722 #endif
2723 
2724 /*
2725  * Structure which contains all information that belongs to a window
2726  *
2727  * All row numbers are relative to the start of the window, except w_winrow.
2728  */
2729 struct window_S
2730 {
2731     int		w_id;		    /* unique window ID */
2732 
2733     buf_T	*w_buffer;	    /* buffer we are a window into (used
2734 				       often, keep it the first item!) */
2735 
2736 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL)
2737     synblock_T	*w_s;		    /* for :ownsyntax */
2738 #endif
2739 
2740     win_T	*w_prev;	    /* link to previous window */
2741     win_T	*w_next;	    /* link to next window */
2742     int		w_closing;	    /* window is being closed, don't let
2743 				       autocommands close it too. */
2744 
2745     frame_T	*w_frame;	    /* frame containing this window */
2746 
2747     pos_T	w_cursor;	    /* cursor position in buffer */
2748 
2749     colnr_T	w_curswant;	    /* The column we'd like to be at.  This is
2750 				       used to try to stay in the same column
2751 				       for up/down cursor motions. */
2752 
2753     int		w_set_curswant;	    /* If set, then update w_curswant the next
2754 				       time through cursupdate() to the
2755 				       current virtual column */
2756 
2757 #ifdef FEAT_SYN_HL
2758     linenr_T	w_last_cursorline;  // where last time 'cursorline' was drawn
2759 #endif
2760 
2761     /*
2762      * the next seven are used to update the visual part
2763      */
2764     char	w_old_visual_mode;  /* last known VIsual_mode */
2765     linenr_T	w_old_cursor_lnum;  /* last known end of visual part */
2766     colnr_T	w_old_cursor_fcol;  /* first column for block visual part */
2767     colnr_T	w_old_cursor_lcol;  /* last column for block visual part */
2768     linenr_T	w_old_visual_lnum;  /* last known start of visual part */
2769     colnr_T	w_old_visual_col;   /* last known start of visual part */
2770     colnr_T	w_old_curswant;	    /* last known value of Curswant */
2771 
2772     /*
2773      * "w_topline", "w_leftcol" and "w_skipcol" specify the offsets for
2774      * displaying the buffer.
2775      */
2776     linenr_T	w_topline;	    /* buffer line number of the line at the
2777 				       top of the window */
2778     char	w_topline_was_set;  /* flag set to TRUE when topline is set,
2779 				       e.g. by winrestview() */
2780 #ifdef FEAT_DIFF
2781     int		w_topfill;	    /* number of filler lines above w_topline */
2782     int		w_old_topfill;	    /* w_topfill at last redraw */
2783     int		w_botfill;	    /* TRUE when filler lines are actually
2784 				       below w_topline (at end of file) */
2785     int		w_old_botfill;	    /* w_botfill at last redraw */
2786 #endif
2787     colnr_T	w_leftcol;	    /* window column number of the left most
2788 				       character in the window; used when
2789 				       'wrap' is off */
2790     colnr_T	w_skipcol;	    /* starting column when a single line
2791 				       doesn't fit in the window */
2792 
2793     /*
2794      * Layout of the window in the screen.
2795      * May need to add "msg_scrolled" to "w_winrow" in rare situations.
2796      */
2797     int		w_winrow;	    /* first row of window in screen */
2798     int		w_height;	    /* number of rows in window, excluding
2799 				       status/command/winbar line(s) */
2800     int		w_status_height;    /* number of status lines (0 or 1) */
2801     int		w_wincol;	    /* Leftmost column of window in screen. */
2802     int		w_width;	    /* Width of window, excluding separation. */
2803     int		w_vsep_width;	    /* Number of separator columns (0 or 1). */
2804 
2805     /*
2806      * === start of cached values ====
2807      */
2808     /*
2809      * Recomputing is minimized by storing the result of computations.
2810      * Use functions in screen.c to check if they are valid and to update.
2811      * w_valid is a bitfield of flags, which indicate if specific values are
2812      * valid or need to be recomputed.	See screen.c for values.
2813      */
2814     int		w_valid;
2815     pos_T	w_valid_cursor;	    /* last known position of w_cursor, used
2816 				       to adjust w_valid */
2817     colnr_T	w_valid_leftcol;    /* last known w_leftcol */
2818 
2819     /*
2820      * w_cline_height is the number of physical lines taken by the buffer line
2821      * that the cursor is on.  We use this to avoid extra calls to plines().
2822      */
2823     int		w_cline_height;	    /* current size of cursor line */
2824 #ifdef FEAT_FOLDING
2825     int		w_cline_folded;	    /* cursor line is folded */
2826 #endif
2827 
2828     int		w_cline_row;	    /* starting row of the cursor line */
2829 
2830     colnr_T	w_virtcol;	    /* column number of the cursor in the
2831 				       buffer line, as opposed to the column
2832 				       number we're at on the screen.  This
2833 				       makes a difference on lines which span
2834 				       more than one screen line or when
2835 				       w_leftcol is non-zero */
2836 
2837     /*
2838      * w_wrow and w_wcol specify the cursor position in the window.
2839      * This is related to positions in the window, not in the display or
2840      * buffer, thus w_wrow is relative to w_winrow.
2841      */
2842     int		w_wrow, w_wcol;	    /* cursor position in window */
2843 
2844     linenr_T	w_botline;	    /* number of the line below the bottom of
2845 				       the window */
2846     int		w_empty_rows;	    /* number of ~ rows in window */
2847 #ifdef FEAT_DIFF
2848     int		w_filler_rows;	    /* number of filler rows at the end of the
2849 				       window */
2850 #endif
2851 
2852     /*
2853      * Info about the lines currently in the window is remembered to avoid
2854      * recomputing it every time.  The allocated size of w_lines[] is Rows.
2855      * Only the w_lines_valid entries are actually valid.
2856      * When the display is up-to-date w_lines[0].wl_lnum is equal to w_topline
2857      * and w_lines[w_lines_valid - 1].wl_lnum is equal to w_botline.
2858      * Between changing text and updating the display w_lines[] represents
2859      * what is currently displayed.  wl_valid is reset to indicated this.
2860      * This is used for efficient redrawing.
2861      */
2862     int		w_lines_valid;	    /* number of valid entries */
2863     wline_T	*w_lines;
2864 
2865 #ifdef FEAT_FOLDING
2866     garray_T	w_folds;	    /* array of nested folds */
2867     char	w_fold_manual;	    /* when TRUE: some folds are opened/closed
2868 				       manually */
2869     char	w_foldinvalid;	    /* when TRUE: folding needs to be
2870 				       recomputed */
2871 #endif
2872 #ifdef FEAT_LINEBREAK
2873     int		w_nrwidth;	    /* width of 'number' and 'relativenumber'
2874 				       column being used */
2875 #endif
2876 
2877     /*
2878      * === end of cached values ===
2879      */
2880 
2881     int		w_redr_type;	    /* type of redraw to be performed on win */
2882     int		w_upd_rows;	    /* number of window lines to update when
2883 				       w_redr_type is REDRAW_TOP */
2884     linenr_T	w_redraw_top;	    /* when != 0: first line needing redraw */
2885     linenr_T	w_redraw_bot;	    /* when != 0: last line needing redraw */
2886     int		w_redr_status;	    /* if TRUE status line must be redrawn */
2887 
2888 #ifdef FEAT_CMDL_INFO
2889     /* remember what is shown in the ruler for this window (if 'ruler' set) */
2890     pos_T	w_ru_cursor;	    /* cursor position shown in ruler */
2891     colnr_T	w_ru_virtcol;	    /* virtcol shown in ruler */
2892     linenr_T	w_ru_topline;	    /* topline shown in ruler */
2893     linenr_T	w_ru_line_count;    /* line count used for ruler */
2894 # ifdef FEAT_DIFF
2895     int		w_ru_topfill;	    /* topfill shown in ruler */
2896 # endif
2897     char	w_ru_empty;	    /* TRUE if ruler shows 0-1 (empty line) */
2898 #endif
2899 
2900     int		w_alt_fnum;	    /* alternate file (for # and CTRL-^) */
2901 
2902     alist_T	*w_alist;	    /* pointer to arglist for this window */
2903     int		w_arg_idx;	    /* current index in argument list (can be
2904 				       out of range!) */
2905     int		w_arg_idx_invalid;  /* editing another file than w_arg_idx */
2906 
2907     char_u	*w_localdir;	    /* absolute path of local directory or
2908 				       NULL */
2909 #ifdef FEAT_MENU
2910     vimmenu_T	*w_winbar;	    /* The root of the WinBar menu hierarchy. */
2911     winbar_item_T *w_winbar_items;  /* list of items in the WinBar */
2912     int		w_winbar_height;    /* 1 if there is a window toolbar */
2913 #endif
2914 
2915     /*
2916      * Options local to a window.
2917      * They are local because they influence the layout of the window or
2918      * depend on the window layout.
2919      * There are two values: w_onebuf_opt is local to the buffer currently in
2920      * this window, w_allbuf_opt is for all buffers in this window.
2921      */
2922     winopt_T	w_onebuf_opt;
2923     winopt_T	w_allbuf_opt;
2924 
2925     /* A few options have local flags for P_INSECURE. */
2926 #ifdef FEAT_STL_OPT
2927     long_u	w_p_stl_flags;	    /* flags for 'statusline' */
2928 #endif
2929 #ifdef FEAT_EVAL
2930     long_u	w_p_fde_flags;	    /* flags for 'foldexpr' */
2931     long_u	w_p_fdt_flags;	    /* flags for 'foldtext' */
2932 #endif
2933 #ifdef FEAT_SYN_HL
2934     int		*w_p_cc_cols;	    /* array of columns to highlight or NULL */
2935 #endif
2936 #ifdef FEAT_LINEBREAK
2937     int		w_p_brimin;	    /* minimum width for breakindent */
2938     int		w_p_brishift;	    /* additional shift for breakindent */
2939     int		w_p_brisbr;	    /* sbr in 'briopt' */
2940 #endif
2941     long        w_p_siso;           /* 'sidescrolloff' local value */
2942     long        w_p_so;             /* 'scrolloff' local value */
2943 
2944     /* transform a pointer to a "onebuf" option into a "allbuf" option */
2945 #define GLOBAL_WO(p)	((char *)p + sizeof(winopt_T))
2946 
2947     long	w_scbind_pos;
2948 
2949 #ifdef FEAT_EVAL
2950     dictitem_T	w_winvar;	/* variable for "w:" Dictionary */
2951     dict_T	*w_vars;	/* internal variables, local to window */
2952 #endif
2953 
2954 #if defined(FEAT_RIGHTLEFT) && defined(FEAT_FKMAP)
2955     int		w_farsi;	/* for the window dependent Farsi functions */
2956 #endif
2957 
2958     /*
2959      * The w_prev_pcmark field is used to check whether we really did jump to
2960      * a new line after setting the w_pcmark.  If not, then we revert to
2961      * using the previous w_pcmark.
2962      */
2963     pos_T	w_pcmark;	/* previous context mark */
2964     pos_T	w_prev_pcmark;	/* previous w_pcmark */
2965 
2966 #ifdef FEAT_JUMPLIST
2967     /*
2968      * the jumplist contains old cursor positions
2969      */
2970     xfmark_T	w_jumplist[JUMPLISTSIZE];
2971     int		w_jumplistlen;		/* number of active entries */
2972     int		w_jumplistidx;		/* current position */
2973 
2974     int		w_changelistidx;	/* current position in b_changelist */
2975 #endif
2976 
2977 #ifdef FEAT_SEARCH_EXTRA
2978     matchitem_T	*w_match_head;		/* head of match list */
2979     int		w_next_match_id;	/* next match ID */
2980 #endif
2981 
2982     /*
2983      * the tagstack grows from 0 upwards:
2984      * entry 0: older
2985      * entry 1: newer
2986      * entry 2: newest
2987      */
2988     taggy_T	w_tagstack[TAGSTACKSIZE];	/* the tag stack */
2989     int		w_tagstackidx;		/* idx just below active entry */
2990     int		w_tagstacklen;		/* number of tags on stack */
2991 
2992     /*
2993      * w_fraction is the fractional row of the cursor within the window, from
2994      * 0 at the top row to FRACTION_MULT at the last row.
2995      * w_prev_fraction_row was the actual cursor row when w_fraction was last
2996      * calculated.
2997      */
2998     int		w_fraction;
2999     int		w_prev_fraction_row;
3000 
3001 #ifdef FEAT_GUI
3002     scrollbar_T	w_scrollbars[2];	/* vert. Scrollbars for this window */
3003 #endif
3004 #ifdef FEAT_LINEBREAK
3005     linenr_T	w_nrwidth_line_count;	/* line count when ml_nrwidth_width
3006 					 * was computed. */
3007     long	w_nuw_cached;		/* 'numberwidth' option cached */
3008     int		w_nrwidth_width;	/* nr of chars to print line count. */
3009 #endif
3010 
3011 #ifdef FEAT_QUICKFIX
3012     qf_info_T	*w_llist;		/* Location list for this window */
3013     /*
3014      * Location list reference used in the location list window.
3015      * In a non-location list window, w_llist_ref is NULL.
3016      */
3017     qf_info_T	*w_llist_ref;
3018 #endif
3019 
3020 
3021 #ifdef FEAT_MZSCHEME
3022     void	*w_mzscheme_ref;	/* The MzScheme value for this window */
3023 #endif
3024 
3025 #ifdef FEAT_PERL
3026     void	*w_perl_private;
3027 #endif
3028 
3029 #ifdef FEAT_PYTHON
3030     void	*w_python_ref;		/* The Python value for this window */
3031 #endif
3032 
3033 #ifdef FEAT_PYTHON3
3034     void	*w_python3_ref;		/* The Python value for this window */
3035 #endif
3036 
3037 #ifdef FEAT_TCL
3038     void	*w_tcl_ref;
3039 #endif
3040 
3041 #ifdef FEAT_RUBY
3042     void	*w_ruby_ref;
3043 #endif
3044 };
3045 
3046 /*
3047  * Arguments for operators.
3048  */
3049 typedef struct oparg_S
3050 {
3051     int		op_type;	/* current pending operator type */
3052     int		regname;	/* register to use for the operator */
3053     int		motion_type;	/* type of the current cursor motion */
3054     int		motion_force;	/* force motion type: 'v', 'V' or CTRL-V */
3055     int		use_reg_one;	/* TRUE if delete uses reg 1 even when not
3056 				   linewise */
3057     int		inclusive;	/* TRUE if char motion is inclusive (only
3058 				   valid when motion_type is MCHAR */
3059     int		end_adjusted;	/* backuped b_op_end one char (only used by
3060 				   do_format()) */
3061     pos_T	start;		/* start of the operator */
3062     pos_T	end;		/* end of the operator */
3063     pos_T	cursor_start;	/* cursor position before motion for "gw" */
3064 
3065     long	line_count;	/* number of lines from op_start to op_end
3066 				   (inclusive) */
3067     int		empty;		/* op_start and op_end the same (only used by
3068 				   do_change()) */
3069     int		is_VIsual;	/* operator on Visual area */
3070     int		block_mode;	/* current operator is Visual block mode */
3071     colnr_T	start_vcol;	/* start col for block mode operator */
3072     colnr_T	end_vcol;	/* end col for block mode operator */
3073     long	prev_opcount;	/* ca.opcount saved for K_CURSORHOLD */
3074     long	prev_count0;	/* ca.count0 saved for K_CURSORHOLD */
3075 } oparg_T;
3076 
3077 /*
3078  * Arguments for Normal mode commands.
3079  */
3080 typedef struct cmdarg_S
3081 {
3082     oparg_T	*oap;		/* Operator arguments */
3083     int		prechar;	/* prefix character (optional, always 'g') */
3084     int		cmdchar;	/* command character */
3085     int		nchar;		/* next command character (optional) */
3086     int		ncharC1;	/* first composing character (optional) */
3087     int		ncharC2;	/* second composing character (optional) */
3088     int		extra_char;	/* yet another character (optional) */
3089     long	opcount;	/* count before an operator */
3090     long	count0;		/* count before command, default 0 */
3091     long	count1;		/* count before command, default 1 */
3092     int		arg;		/* extra argument from nv_cmds[] */
3093     int		retval;		/* return: CA_* values */
3094     char_u	*searchbuf;	/* return: pointer to search pattern or NULL */
3095 } cmdarg_T;
3096 
3097 /* values for retval: */
3098 #define CA_COMMAND_BUSY	    1	/* skip restarting edit() once */
3099 #define CA_NO_ADJ_OP_END    2	/* don't adjust operator end */
3100 
3101 #ifdef CURSOR_SHAPE
3102 /*
3103  * struct to store values from 'guicursor' and 'mouseshape'
3104  */
3105 /* Indexes in shape_table[] */
3106 #define SHAPE_IDX_N	0	/* Normal mode */
3107 #define SHAPE_IDX_V	1	/* Visual mode */
3108 #define SHAPE_IDX_I	2	/* Insert mode */
3109 #define SHAPE_IDX_R	3	/* Replace mode */
3110 #define SHAPE_IDX_C	4	/* Command line Normal mode */
3111 #define SHAPE_IDX_CI	5	/* Command line Insert mode */
3112 #define SHAPE_IDX_CR	6	/* Command line Replace mode */
3113 #define SHAPE_IDX_O	7	/* Operator-pending mode */
3114 #define SHAPE_IDX_VE	8	/* Visual mode with 'selection' exclusive */
3115 #define SHAPE_IDX_CLINE	9	/* On command line */
3116 #define SHAPE_IDX_STATUS 10	/* A status line */
3117 #define SHAPE_IDX_SDRAG 11	/* dragging a status line */
3118 #define SHAPE_IDX_VSEP	12	/* A vertical separator line */
3119 #define SHAPE_IDX_VDRAG 13	/* dragging a vertical separator line */
3120 #define SHAPE_IDX_MORE	14	/* Hit-return or More */
3121 #define SHAPE_IDX_MOREL	15	/* Hit-return or More in last line */
3122 #define SHAPE_IDX_SM	16	/* showing matching paren */
3123 #define SHAPE_IDX_COUNT	17
3124 
3125 #define SHAPE_BLOCK	0	/* block cursor */
3126 #define SHAPE_HOR	1	/* horizontal bar cursor */
3127 #define SHAPE_VER	2	/* vertical bar cursor */
3128 
3129 #define MSHAPE_NUMBERED	1000	/* offset for shapes identified by number */
3130 #define MSHAPE_HIDE	1	/* hide mouse pointer */
3131 
3132 #define SHAPE_MOUSE	1	/* used for mouse pointer shape */
3133 #define SHAPE_CURSOR	2	/* used for text cursor shape */
3134 
3135 typedef struct cursor_entry
3136 {
3137     int		shape;		/* one of the SHAPE_ defines */
3138     int		mshape;		/* one of the MSHAPE defines */
3139     int		percentage;	/* percentage of cell for bar */
3140     long	blinkwait;	/* blinking, wait time before blinking starts */
3141     long	blinkon;	/* blinking, on time */
3142     long	blinkoff;	/* blinking, off time */
3143     int		id;		/* highlight group ID */
3144     int		id_lm;		/* highlight group ID for :lmap mode */
3145     char	*name;		/* mode name (fixed) */
3146     char	used_for;	/* SHAPE_MOUSE and/or SHAPE_CURSOR */
3147 } cursorentry_T;
3148 #endif /* CURSOR_SHAPE */
3149 
3150 #ifdef FEAT_MENU
3151 
3152 /* Indices into vimmenu_T->strings[] and vimmenu_T->noremap[] for each mode */
3153 #define MENU_INDEX_INVALID	-1
3154 #define MENU_INDEX_NORMAL	0
3155 #define MENU_INDEX_VISUAL	1
3156 #define MENU_INDEX_SELECT	2
3157 #define MENU_INDEX_OP_PENDING	3
3158 #define MENU_INDEX_INSERT	4
3159 #define MENU_INDEX_CMDLINE	5
3160 #define MENU_INDEX_TERMINAL	6
3161 #define MENU_INDEX_TIP		7
3162 #define MENU_MODES		8
3163 
3164 /* Menu modes */
3165 #define MENU_NORMAL_MODE	(1 << MENU_INDEX_NORMAL)
3166 #define MENU_VISUAL_MODE	(1 << MENU_INDEX_VISUAL)
3167 #define MENU_SELECT_MODE	(1 << MENU_INDEX_SELECT)
3168 #define MENU_OP_PENDING_MODE	(1 << MENU_INDEX_OP_PENDING)
3169 #define MENU_INSERT_MODE	(1 << MENU_INDEX_INSERT)
3170 #define MENU_CMDLINE_MODE	(1 << MENU_INDEX_CMDLINE)
3171 #define MENU_TERMINAL_MODE	(1 << MENU_INDEX_TERMINAL)
3172 #define MENU_TIP_MODE		(1 << MENU_INDEX_TIP)
3173 #define MENU_ALL_MODES		((1 << MENU_INDEX_TIP) - 1)
3174 /*note MENU_INDEX_TIP is not a 'real' mode*/
3175 
3176 /* Start a menu name with this to not include it on the main menu bar */
3177 #define MNU_HIDDEN_CHAR		']'
3178 
3179 struct VimMenu
3180 {
3181     int		modes;		    /* Which modes is this menu visible for? */
3182     int		enabled;	    /* for which modes the menu is enabled */
3183     char_u	*name;		    /* Name of menu, possibly translated */
3184     char_u	*dname;		    /* Displayed Name ("name" without '&') */
3185 #ifdef FEAT_MULTI_LANG
3186     char_u	*en_name;	    /* "name" untranslated, NULL when "name"
3187 				     * was not translated */
3188     char_u	*en_dname;	    /* "dname" untranslated, NULL when "dname"
3189 				     * was not translated */
3190 #endif
3191     int		mnemonic;	    /* mnemonic key (after '&') */
3192     char_u	*actext;	    /* accelerator text (after TAB) */
3193     int		priority;	    /* Menu order priority */
3194 #ifdef FEAT_GUI
3195     void	(*cb)(vimmenu_T *);	    /* Call-back routine */
3196 #endif
3197 #ifdef FEAT_TOOLBAR
3198     char_u	*iconfile;	    /* name of file for icon or NULL */
3199     int		iconidx;	    /* icon index (-1 if not set) */
3200     int		icon_builtin;	    /* icon names is BuiltIn{nr} */
3201 #endif
3202     char_u	*strings[MENU_MODES]; /* Mapped string for each mode */
3203     int		noremap[MENU_MODES]; /* A REMAP_ flag for each mode */
3204     char	silent[MENU_MODES]; /* A silent flag for each mode */
3205     vimmenu_T	*children;	    /* Children of sub-menu */
3206     vimmenu_T	*parent;	    /* Parent of menu */
3207     vimmenu_T	*next;		    /* Next item in menu */
3208 #ifdef FEAT_GUI_X11
3209     Widget	id;		    /* Manage this to enable item */
3210     Widget	submenu_id;	    /* If this is submenu, add children here */
3211 #endif
3212 #ifdef FEAT_GUI_GTK
3213     GtkWidget	*id;		    /* Manage this to enable item */
3214     GtkWidget	*submenu_id;	    /* If this is submenu, add children here */
3215 # if defined(GTK_CHECK_VERSION) && !GTK_CHECK_VERSION(3,4,0)
3216     GtkWidget	*tearoff_handle;
3217 # endif
3218     GtkWidget   *label;		    /* Used by "set wak=" code. */
3219 #endif
3220 #ifdef FEAT_GUI_MOTIF
3221     int		sensitive;	    /* turn button on/off */
3222     char	**xpm;		    /* pixmap data */
3223     char	*xpm_fname;	    /* file with pixmap data */
3224 #endif
3225 #ifdef FEAT_GUI_ATHENA
3226     Pixmap	image;		    /* Toolbar image */
3227 #endif
3228 #ifdef FEAT_BEVAL_TIP
3229     BalloonEval *tip;		    /* tooltip for this menu item */
3230 #endif
3231 #ifdef FEAT_GUI_W32
3232     UINT	id;		    /* Id of menu item */
3233     HMENU	submenu_id;	    /* If this is submenu, add children here */
3234     HWND	tearoff_handle;	    /* hWnd of tearoff if created */
3235 #endif
3236 #ifdef FEAT_GUI_MAC
3237 /*  MenuHandle	id; */
3238 /*  short	index;	*/	    /* the item index within the father menu */
3239     short	menu_id;	    /* the menu id to which this item belong */
3240     short	submenu_id;	    /* the menu id of the children (could be
3241 				       get through some tricks) */
3242     MenuHandle	menu_handle;
3243     MenuHandle	submenu_handle;
3244 #endif
3245 #ifdef FEAT_GUI_PHOTON
3246     PtWidget_t	*id;
3247     PtWidget_t	*submenu_id;
3248 #endif
3249 };
3250 #else
3251 /* For generating prototypes when FEAT_MENU isn't defined. */
3252 typedef int vimmenu_T;
3253 
3254 #endif /* FEAT_MENU */
3255 
3256 /*
3257  * Struct to save values in before executing autocommands for a buffer that is
3258  * not the current buffer.
3259  */
3260 typedef struct
3261 {
3262     buf_T	*save_curbuf;	/* saved curbuf */
3263     int		use_aucmd_win;	/* using aucmd_win */
3264     win_T	*save_curwin;	/* saved curwin */
3265     win_T	*new_curwin;	/* new curwin */
3266     win_T	*save_prevwin;	/* saved prevwin */
3267     bufref_T	new_curbuf;	/* new curbuf */
3268     char_u	*globaldir;	/* saved value of globaldir */
3269 } aco_save_T;
3270 
3271 /*
3272  * Generic option table item, only used for printer at the moment.
3273  */
3274 typedef struct
3275 {
3276     const char	*name;
3277     int		hasnum;
3278     long	number;
3279     char_u	*string;	/* points into option string */
3280     int		strlen;
3281     int		present;
3282 } option_table_T;
3283 
3284 /*
3285  * Structure to hold printing color and font attributes.
3286  */
3287 typedef struct
3288 {
3289     long_u	fg_color;
3290     long_u	bg_color;
3291     int		bold;
3292     int		italic;
3293     int		underline;
3294     int		undercurl;
3295 } prt_text_attr_T;
3296 
3297 /*
3298  * Structure passed back to the generic printer code.
3299  */
3300 typedef struct
3301 {
3302     int		n_collated_copies;
3303     int		n_uncollated_copies;
3304     int		duplex;
3305     int		chars_per_line;
3306     int		lines_per_page;
3307     int		has_color;
3308     prt_text_attr_T number;
3309 #ifdef FEAT_SYN_HL
3310     int		modec;
3311     int		do_syntax;
3312 #endif
3313     int		user_abort;
3314     char_u	*jobname;
3315 #ifdef FEAT_POSTSCRIPT
3316     char_u	*outfile;
3317     char_u	*arguments;
3318 #endif
3319 } prt_settings_T;
3320 
3321 #define PRINT_NUMBER_WIDTH 8
3322 
3323 /*
3324  * Used for popup menu items.
3325  */
3326 typedef struct
3327 {
3328     char_u	*pum_text;	/* main menu text */
3329     char_u	*pum_kind;	/* extra kind text (may be truncated) */
3330     char_u	*pum_extra;	/* extra menu text (may be truncated) */
3331     char_u	*pum_info;	/* extra info */
3332 } pumitem_T;
3333 
3334 /*
3335  * Structure used for get_tagfname().
3336  */
3337 typedef struct
3338 {
3339     char_u	*tn_tags;	/* value of 'tags' when starting */
3340     char_u	*tn_np;		/* current position in tn_tags */
3341     int		tn_did_filefind_init;
3342     int		tn_hf_idx;
3343     void	*tn_search_ctx;
3344 } tagname_T;
3345 
3346 /*
3347  * Array indexes used for cptext argument of ins_compl_add().
3348  */
3349 #define CPT_ABBR	0	/* "abbr" */
3350 #define CPT_MENU	1	/* "menu" */
3351 #define CPT_KIND	2	/* "kind" */
3352 #define CPT_INFO	3	/* "info" */
3353 #define CPT_USER_DATA	4	/* "user data" */
3354 #define CPT_COUNT	5	/* Number of entries */
3355 
3356 typedef struct {
3357   UINT32_T total[2];
3358   UINT32_T state[8];
3359   char_u   buffer[64];
3360 } context_sha256_T;
3361 
3362 /*
3363  * types for expressions.
3364  */
3365 typedef enum
3366 {
3367     TYPE_UNKNOWN = 0,
3368     TYPE_EQUAL,		// ==
3369     TYPE_NEQUAL,	// !=
3370     TYPE_GREATER,	// >
3371     TYPE_GEQUAL,	// >=
3372     TYPE_SMALLER,	// <
3373     TYPE_SEQUAL,	// <=
3374     TYPE_MATCH,		// =~
3375     TYPE_NOMATCH,	// !~
3376 } exptype_T;
3377 
3378 /*
3379  * Structure used for reading in json_decode().
3380  */
3381 struct js_reader
3382 {
3383     char_u	*js_buf;	/* text to be decoded */
3384     char_u	*js_end;	/* NUL in js_buf */
3385     int		js_used;	/* bytes used from js_buf */
3386     int		(*js_fill)(struct js_reader *);
3387 				/* function to fill the buffer or NULL;
3388                                  * return TRUE when the buffer was filled */
3389     void	*js_cookie;	/* can be used by js_fill */
3390     int		js_cookie_arg;	/* can be used by js_fill */
3391 };
3392 typedef struct js_reader js_read_T;
3393 
3394 typedef struct timer_S timer_T;
3395 struct timer_S
3396 {
3397     long	tr_id;
3398 #ifdef FEAT_TIMERS
3399     timer_T	*tr_next;
3400     timer_T	*tr_prev;
3401     proftime_T	tr_due;		    /* when the callback is to be invoked */
3402     char	tr_firing;	    /* when TRUE callback is being called */
3403     char	tr_paused;	    /* when TRUE callback is not invoked */
3404     int		tr_repeat;	    /* number of times to repeat, -1 forever */
3405     long	tr_interval;	    /* msec */
3406     char_u	*tr_callback;	    /* allocated */
3407     partial_T	*tr_partial;
3408     int		tr_emsg_count;
3409 #endif
3410 };
3411 
3412 /* Maximum number of commands from + or -c arguments. */
3413 #define MAX_ARG_CMDS 10
3414 
3415 /* values for "window_layout" */
3416 #define WIN_HOR	    1	    /* "-o" horizontally split windows */
3417 #define	WIN_VER	    2	    /* "-O" vertically split windows */
3418 #define	WIN_TABS    3	    /* "-p" windows on tab pages */
3419 
3420 /* Struct for various parameters passed between main() and other functions. */
3421 typedef struct
3422 {
3423     int		argc;
3424     char	**argv;
3425 
3426     char_u	*fname;			/* first file to edit */
3427 
3428     int		evim_mode;		/* started as "evim" */
3429     char_u	*use_vimrc;		/* vimrc from -u argument */
3430     int		clean;			/* --clean argument */
3431 
3432     int		n_commands;		     /* no. of commands from + or -c */
3433     char_u	*commands[MAX_ARG_CMDS];     /* commands from + or -c arg. */
3434     char_u	cmds_tofree[MAX_ARG_CMDS];   /* commands that need free() */
3435     int		n_pre_commands;		     /* no. of commands from --cmd */
3436     char_u	*pre_commands[MAX_ARG_CMDS]; /* commands from --cmd argument */
3437 
3438     int		edit_type;		/* type of editing to do */
3439     char_u	*tagname;		/* tag from -t argument */
3440 #ifdef FEAT_QUICKFIX
3441     char_u	*use_ef;		/* 'errorfile' from -q argument */
3442 #endif
3443 
3444     int		want_full_screen;
3445     int		not_a_term;		/* no warning for missing term? */
3446     int		tty_fail;		/* exit if not a tty */
3447     char_u	*term;			/* specified terminal name */
3448 #ifdef FEAT_CRYPT
3449     int		ask_for_key;		/* -x argument */
3450 #endif
3451     int		no_swap_file;		/* "-n" argument used */
3452 #ifdef FEAT_EVAL
3453     int		use_debug_break_level;
3454 #endif
3455     int		window_count;		/* number of windows to use */
3456     int		window_layout;		/* 0, WIN_HOR, WIN_VER or WIN_TABS */
3457 
3458 #ifdef FEAT_CLIENTSERVER
3459     int		serverArg;		/* TRUE when argument for a server */
3460     char_u	*serverName_arg;	/* cmdline arg for server name */
3461     char_u	*serverStr;		/* remote server command */
3462     char_u	*serverStrEnc;		/* encoding of serverStr */
3463     char_u	*servername;		/* allocated name for our server */
3464 #endif
3465 #if !defined(UNIX)
3466 # define EXPAND_FILENAMES
3467     int		literal;		/* don't expand file names */
3468 #endif
3469 #ifdef MSWIN
3470     int		full_path;		/* file name argument was full path */
3471 #endif
3472 #ifdef FEAT_DIFF
3473     int		diff_mode;		/* start with 'diff' set */
3474 #endif
3475 } mparm_T;
3476 
3477 /*
3478  * Structure returned by get_lval() and used by set_var_lval().
3479  * For a plain name:
3480  *	"name"	    points to the variable name.
3481  *	"exp_name"  is NULL.
3482  *	"tv"	    is NULL
3483  * For a magic braces name:
3484  *	"name"	    points to the expanded variable name.
3485  *	"exp_name"  is non-NULL, to be freed later.
3486  *	"tv"	    is NULL
3487  * For an index in a list:
3488  *	"name"	    points to the (expanded) variable name.
3489  *	"exp_name"  NULL or non-NULL, to be freed later.
3490  *	"tv"	    points to the (first) list item value
3491  *	"li"	    points to the (first) list item
3492  *	"range", "n1", "n2" and "empty2" indicate what items are used.
3493  * For an existing Dict item:
3494  *	"name"	    points to the (expanded) variable name.
3495  *	"exp_name"  NULL or non-NULL, to be freed later.
3496  *	"tv"	    points to the dict item value
3497  *	"newkey"    is NULL
3498  * For a non-existing Dict item:
3499  *	"name"	    points to the (expanded) variable name.
3500  *	"exp_name"  NULL or non-NULL, to be freed later.
3501  *	"tv"	    points to the Dictionary typval_T
3502  *	"newkey"    is the key for the new item.
3503  */
3504 typedef struct lval_S
3505 {
3506     char_u	*ll_name;	/* start of variable name (can be NULL) */
3507     char_u	*ll_exp_name;	/* NULL or expanded name in allocated memory. */
3508     typval_T	*ll_tv;		/* Typeval of item being used.  If "newkey"
3509 				   isn't NULL it's the Dict to which to add
3510 				   the item. */
3511     listitem_T	*ll_li;		/* The list item or NULL. */
3512     list_T	*ll_list;	/* The list or NULL. */
3513     int		ll_range;	/* TRUE when a [i:j] range was used */
3514     long	ll_n1;		/* First index for list */
3515     long	ll_n2;		/* Second index for list range */
3516     int		ll_empty2;	/* Second index is empty: [i:] */
3517     dict_T	*ll_dict;	/* The Dictionary or NULL */
3518     dictitem_T	*ll_di;		/* The dictitem or NULL */
3519     char_u	*ll_newkey;	/* New key for Dict in alloc. mem or NULL. */
3520     blob_T	*ll_blob;	/* The Blob or NULL */
3521 } lval_T;
3522 
3523 /* Structure used to save the current state.  Used when executing Normal mode
3524  * commands while in any other mode. */
3525 typedef struct {
3526     int		save_msg_scroll;
3527     int		save_restart_edit;
3528     int		save_msg_didout;
3529     int		save_State;
3530     int		save_insertmode;
3531     int		save_finish_op;
3532     int		save_opcount;
3533     tasave_T	tabuf;
3534 } save_state_T;
3535 
3536 typedef struct {
3537     varnumber_T vv_prevcount;
3538     varnumber_T vv_count;
3539     varnumber_T vv_count1;
3540 } vimvars_save_T;
3541