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Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001/* vi:set ts=8 sts=4 sw=4 noet:
2 *
3 * VIM - Vi IMproved by Bram Moolenaar
4 *
5 * Do ":help uganda" in Vim to read copying and usage conditions.
6 * Do ":help credits" in Vim to see a list of people who contributed.
7 * See README.txt for an overview of the Vim source code.
8 */
9
10/*
11 * drawline.c: Functions for drawing window lines on the screen.
12 * This is the middle level, drawscreen. is the higher level and screen.c the
13 * lower level.
14 */
15
16#include "vim.h"
17
18#ifdef FEAT_SYN_HL
19/*
20 * Advance **color_cols and return TRUE when there are columns to draw.
21 */
22 static int
23advance_color_col(int vcol, int **color_cols)
24{
25 while (**color_cols >= 0 && vcol > **color_cols)
26 ++*color_cols;
27 return (**color_cols >= 0);
28}
29#endif
30
31#ifdef FEAT_SYN_HL
32/*
33 * Used when 'cursorlineopt' contains "screenline": compute the margins between
34 * which the highlighting is used.
35 */
36 static void
37margin_columns_win(win_T *wp, int *left_col, int *right_col)
38{
39 // cache previous calculations depending on w_virtcol
40 static int saved_w_virtcol;
41 static win_T *prev_wp;
42 static int prev_left_col;
43 static int prev_right_col;
44 static int prev_col_off;
45
46 int cur_col_off = win_col_off(wp);
47 int width1;
48 int width2;
49
50 if (saved_w_virtcol == wp->w_virtcol
51 && prev_wp == wp && prev_col_off == cur_col_off)
52 {
53 *right_col = prev_right_col;
54 *left_col = prev_left_col;
55 return;
56 }
57
58 width1 = wp->w_width - cur_col_off;
59 width2 = width1 + win_col_off2(wp);
60
61 *left_col = 0;
62 *right_col = width1;
63
64 if (wp->w_virtcol >= (colnr_T)width1)
65 *right_col = width1 + ((wp->w_virtcol - width1) / width2 + 1) * width2;
66 if (wp->w_virtcol >= (colnr_T)width1 && width2 > 0)
67 *left_col = (wp->w_virtcol - width1) / width2 * width2 + width1;
68
69 // cache values
70 prev_left_col = *left_col;
71 prev_right_col = *right_col;
72 prev_wp = wp;
73 saved_w_virtcol = wp->w_virtcol;
74 prev_col_off = cur_col_off;
75}
76#endif
77
78#ifdef FEAT_SIGNS
79/*
80 * Get information needed to display the sign in line 'lnum' in window 'wp'.
81 * If 'nrcol' is TRUE, the sign is going to be displayed in the number column.
82 * Otherwise the sign is going to be displayed in the sign column.
83 */
84 static void
85get_sign_display_info(
86 int nrcol,
87 win_T *wp,
88 linenr_T lnum UNUSED,
89 sign_attrs_T *sattr,
90 int wcr_attr,
91 int row,
92 int startrow,
93 int filler_lines UNUSED,
94 int filler_todo UNUSED,
95 int *c_extrap,
96 int *c_finalp,
97 char_u *extra,
98 char_u **pp_extra,
99 int *n_extrap,
100 int *char_attrp)
101{
102 int text_sign;
103# ifdef FEAT_SIGN_ICONS
104 int icon_sign;
105# endif
106
107 // Draw two cells with the sign value or blank.
108 *c_extrap = ' ';
109 *c_finalp = NUL;
110 if (nrcol)
111 *n_extrap = number_width(wp) + 1;
112 else
113 {
114 *char_attrp = hl_combine_attr(wcr_attr, HL_ATTR(HLF_SC));
115 *n_extrap = 2;
116 }
117
118 if (row == startrow
119#ifdef FEAT_DIFF
120 + filler_lines && filler_todo <= 0
121#endif
122 )
123 {
Bram Moolenaar6656c2e2019-10-24 15:00:04 +0200124 text_sign = (sattr->sat_text != NULL) ? sattr->sat_typenr : 0;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200125# ifdef FEAT_SIGN_ICONS
Bram Moolenaar6656c2e2019-10-24 15:00:04 +0200126 icon_sign = (sattr->sat_icon != NULL) ? sattr->sat_typenr : 0;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200127 if (gui.in_use && icon_sign != 0)
128 {
129 // Use the image in this position.
130 if (nrcol)
131 {
132 *c_extrap = NUL;
133 sprintf((char *)extra, "%-*c ", number_width(wp), SIGN_BYTE);
134 *pp_extra = extra;
135 *n_extrap = (int)STRLEN(*pp_extra);
136 }
137 else
138 *c_extrap = SIGN_BYTE;
139# ifdef FEAT_NETBEANS_INTG
140 if (netbeans_active() && (buf_signcount(wp->w_buffer, lnum) > 1))
141 {
142 if (nrcol)
143 {
144 *c_extrap = NUL;
145 sprintf((char *)extra, "%-*c ", number_width(wp),
146 MULTISIGN_BYTE);
147 *pp_extra = extra;
148 *n_extrap = (int)STRLEN(*pp_extra);
149 }
150 else
151 *c_extrap = MULTISIGN_BYTE;
152 }
153# endif
154 *c_finalp = NUL;
155 *char_attrp = icon_sign;
156 }
157 else
158# endif
159 if (text_sign != 0)
160 {
Bram Moolenaar6656c2e2019-10-24 15:00:04 +0200161 *pp_extra = sattr->sat_text;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200162 if (*pp_extra != NULL)
163 {
164 if (nrcol)
165 {
166 int n, width = number_width(wp) - 2;
167
168 for (n = 0; n < width; n++)
169 extra[n] = ' ';
170 extra[n] = 0;
171 STRCAT(extra, *pp_extra);
172 STRCAT(extra, " ");
173 *pp_extra = extra;
174 }
175 *c_extrap = NUL;
176 *c_finalp = NUL;
177 *n_extrap = (int)STRLEN(*pp_extra);
178 }
Bram Moolenaar6656c2e2019-10-24 15:00:04 +0200179 *char_attrp = sattr->sat_texthl;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200180 }
181 }
182}
183#endif
184
185#ifdef FEAT_TEXT_PROP
186static textprop_T *current_text_props = NULL;
187static buf_T *current_buf = NULL;
188
189 static int
190text_prop_compare(const void *s1, const void *s2)
191{
192 int idx1, idx2;
193 proptype_T *pt1, *pt2;
194 colnr_T col1, col2;
195
196 idx1 = *(int *)s1;
197 idx2 = *(int *)s2;
198 pt1 = text_prop_type_by_id(current_buf, current_text_props[idx1].tp_type);
199 pt2 = text_prop_type_by_id(current_buf, current_text_props[idx2].tp_type);
200 if (pt1 == pt2)
201 return 0;
202 if (pt1 == NULL)
203 return -1;
204 if (pt2 == NULL)
205 return 1;
206 if (pt1->pt_priority != pt2->pt_priority)
207 return pt1->pt_priority > pt2->pt_priority ? 1 : -1;
208 col1 = current_text_props[idx1].tp_col;
209 col2 = current_text_props[idx2].tp_col;
210 return col1 == col2 ? 0 : col1 > col2 ? 1 : -1;
211}
212#endif
213
214/*
215 * Display line "lnum" of window 'wp' on the screen.
216 * Start at row "startrow", stop when "endrow" is reached.
217 * wp->w_virtcol needs to be valid.
218 *
219 * Return the number of last row the line occupies.
220 */
221 int
222win_line(
223 win_T *wp,
224 linenr_T lnum,
225 int startrow,
226 int endrow,
227 int nochange UNUSED, // not updating for changed text
228 int number_only) // only update the number column
229{
230 int col = 0; // visual column on screen
231 unsigned off; // offset in ScreenLines/ScreenAttrs
232 int c = 0; // init for GCC
233 long vcol = 0; // virtual column (for tabs)
234#ifdef FEAT_LINEBREAK
235 long vcol_sbr = -1; // virtual column after showbreak
236#endif
237 long vcol_prev = -1; // "vcol" of previous character
238 char_u *line; // current line
239 char_u *ptr; // current position in "line"
240 int row; // row in the window, excl w_winrow
241 int screen_row; // row on the screen, incl w_winrow
242
243 char_u extra[21]; // "%ld " and 'fdc' must fit in here
244 int n_extra = 0; // number of extra chars
245 char_u *p_extra = NULL; // string of extra chars, plus NUL
246 char_u *p_extra_free = NULL; // p_extra needs to be freed
247 int c_extra = NUL; // extra chars, all the same
248 int c_final = NUL; // final char, mandatory if set
249 int extra_attr = 0; // attributes when n_extra != 0
250 static char_u *at_end_str = (char_u *)""; // used for p_extra when
251 // displaying lcs_eol at end-of-line
252 int lcs_eol_one = lcs_eol; // lcs_eol until it's been used
253 int lcs_prec_todo = lcs_prec; // lcs_prec until it's been used
254
255 // saved "extra" items for when draw_state becomes WL_LINE (again)
256 int saved_n_extra = 0;
257 char_u *saved_p_extra = NULL;
258 int saved_c_extra = 0;
259 int saved_c_final = 0;
260 int saved_char_attr = 0;
261
262 int n_attr = 0; // chars with special attr
263 int saved_attr2 = 0; // char_attr saved for n_attr
264 int n_attr3 = 0; // chars with overruling special attr
265 int saved_attr3 = 0; // char_attr saved for n_attr3
266
267 int n_skip = 0; // nr of chars to skip for 'nowrap'
268
269 int fromcol = -10; // start of inverting
270 int tocol = MAXCOL; // end of inverting
271 int fromcol_prev = -2; // start of inverting after cursor
272 int noinvcur = FALSE; // don't invert the cursor
273 pos_T *top, *bot;
274 int lnum_in_visual_area = FALSE;
275 pos_T pos;
276 long v;
277
278 int char_attr = 0; // attributes for next character
279 int attr_pri = FALSE; // char_attr has priority
280 int area_highlighting = FALSE; // Visual or incsearch highlighting
281 // in this line
282 int vi_attr = 0; // attributes for Visual and incsearch
283 // highlighting
284 int wcr_attr = 0; // attributes from 'wincolor'
285 int win_attr = 0; // background for whole window, except
286 // margins and "~" lines.
287 int area_attr = 0; // attributes desired by highlighting
288 int search_attr = 0; // attributes desired by 'hlsearch'
289#ifdef FEAT_SYN_HL
290 int vcol_save_attr = 0; // saved attr for 'cursorcolumn'
291 int syntax_attr = 0; // attributes desired by syntax
Bram Moolenaar9115c612019-10-16 16:57:06 +0200292 int prev_syntax_col = -1; // column of prev_syntax_attr
293 int prev_syntax_attr = 0; // syntax_attr at prev_syntax_col
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200294 int has_syntax = FALSE; // this buffer has syntax highl.
295 int save_did_emsg;
296 int draw_color_col = FALSE; // highlight colorcolumn
297 int *color_cols = NULL; // pointer to according columns array
298#endif
299 int eol_hl_off = 0; // 1 if highlighted char after EOL
300#ifdef FEAT_TEXT_PROP
301 int text_prop_count;
302 int text_prop_next = 0; // next text property to use
303 textprop_T *text_props = NULL;
304 int *text_prop_idxs = NULL;
305 int text_props_active = 0;
306 proptype_T *text_prop_type = NULL;
307 int text_prop_attr = 0;
308 int text_prop_combine = FALSE;
309#endif
310#ifdef FEAT_SPELL
311 int has_spell = FALSE; // this buffer has spell checking
Bram Moolenaar34390282019-10-16 14:38:26 +0200312 int can_spell;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200313# define SPWORDLEN 150
314 char_u nextline[SPWORDLEN * 2];// text with start of the next line
315 int nextlinecol = 0; // column where nextline[] starts
316 int nextline_idx = 0; // index in nextline[] where next line
317 // starts
318 int spell_attr = 0; // attributes desired by spelling
319 int word_end = 0; // last byte with same spell_attr
320 static linenr_T checked_lnum = 0; // line number for "checked_col"
321 static int checked_col = 0; // column in "checked_lnum" up to which
322 // there are no spell errors
323 static int cap_col = -1; // column to check for Cap word
324 static linenr_T capcol_lnum = 0; // line number where "cap_col" used
325 int cur_checked_col = 0; // checked column for current line
326#endif
327 int extra_check = 0; // has extra highlighting
328 int multi_attr = 0; // attributes desired by multibyte
329 int mb_l = 1; // multi-byte byte length
330 int mb_c = 0; // decoded multi-byte character
331 int mb_utf8 = FALSE; // screen char is UTF-8 char
332 int u8cc[MAX_MCO]; // composing UTF-8 chars
333#if defined(FEAT_DIFF) || defined(FEAT_SIGNS)
334 int filler_lines = 0; // nr of filler lines to be drawn
335 int filler_todo = 0; // nr of filler lines still to do + 1
336#endif
337#ifdef FEAT_DIFF
338 hlf_T diff_hlf = (hlf_T)0; // type of diff highlighting
339 int change_start = MAXCOL; // first col of changed area
340 int change_end = -1; // last col of changed area
341#endif
342 colnr_T trailcol = MAXCOL; // start of trailing spaces
343#ifdef FEAT_LINEBREAK
344 int need_showbreak = FALSE; // overlong line, skipping first x
345 // chars
346#endif
347#if defined(FEAT_SIGNS) || defined(FEAT_QUICKFIX) \
348 || defined(FEAT_SYN_HL) || defined(FEAT_DIFF)
349# define LINE_ATTR
350 int line_attr = 0; // attribute for the whole line
351 int line_attr_save;
352#endif
353#ifdef FEAT_SIGNS
354 int sign_present = FALSE;
355 sign_attrs_T sattr;
356#endif
357#ifdef FEAT_ARABIC
358 int prev_c = 0; // previous Arabic character
359 int prev_c1 = 0; // first composing char for prev_c
360#endif
361#if defined(LINE_ATTR)
362 int did_line_attr = 0;
363#endif
364#ifdef FEAT_TERMINAL
365 int get_term_attr = FALSE;
366#endif
367#ifdef FEAT_SYN_HL
368 int cul_attr = 0; // set when 'cursorline' active
369
370 // 'cursorlineopt' has "screenline" and cursor is in this line
371 int cul_screenline = FALSE;
372
373 // margin columns for the screen line, needed for when 'cursorlineopt'
374 // contains "screenline"
375 int left_curline_col = 0;
376 int right_curline_col = 0;
377#endif
378
379 // draw_state: items that are drawn in sequence:
380#define WL_START 0 // nothing done yet
381#ifdef FEAT_CMDWIN
382# define WL_CMDLINE WL_START + 1 // cmdline window column
383#else
384# define WL_CMDLINE WL_START
385#endif
386#ifdef FEAT_FOLDING
387# define WL_FOLD WL_CMDLINE + 1 // 'foldcolumn'
388#else
389# define WL_FOLD WL_CMDLINE
390#endif
391#ifdef FEAT_SIGNS
392# define WL_SIGN WL_FOLD + 1 // column for signs
393#else
394# define WL_SIGN WL_FOLD // column for signs
395#endif
396#define WL_NR WL_SIGN + 1 // line number
397#ifdef FEAT_LINEBREAK
398# define WL_BRI WL_NR + 1 // 'breakindent'
399#else
400# define WL_BRI WL_NR
401#endif
402#if defined(FEAT_LINEBREAK) || defined(FEAT_DIFF)
403# define WL_SBR WL_BRI + 1 // 'showbreak' or 'diff'
404#else
405# define WL_SBR WL_BRI
406#endif
407#define WL_LINE WL_SBR + 1 // text in the line
408 int draw_state = WL_START; // what to draw next
409#if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
410 int feedback_col = 0;
411 int feedback_old_attr = -1;
412#endif
413 int screen_line_flags = 0;
414
415#if defined(FEAT_CONCEAL) || defined(FEAT_SEARCH_EXTRA)
416 int match_conc = 0; // cchar for match functions
417#endif
418#ifdef FEAT_CONCEAL
419 int syntax_flags = 0;
420 int syntax_seqnr = 0;
421 int prev_syntax_id = 0;
422 int conceal_attr = HL_ATTR(HLF_CONCEAL);
423 int is_concealing = FALSE;
424 int boguscols = 0; // nonexistent columns added to force
425 // wrapping
426 int vcol_off = 0; // offset for concealed characters
427 int did_wcol = FALSE;
428 int old_boguscols = 0;
429# define VCOL_HLC (vcol - vcol_off)
430# define FIX_FOR_BOGUSCOLS \
431 { \
432 n_extra += vcol_off; \
433 vcol -= vcol_off; \
434 vcol_off = 0; \
435 col -= boguscols; \
436 old_boguscols = boguscols; \
437 boguscols = 0; \
438 }
439#else
440# define VCOL_HLC (vcol)
441#endif
442
443 if (startrow > endrow) // past the end already!
444 return startrow;
445
446 row = startrow;
447 screen_row = row + W_WINROW(wp);
448
449 if (!number_only)
450 {
451 // To speed up the loop below, set extra_check when there is linebreak,
452 // trailing white space and/or syntax processing to be done.
453#ifdef FEAT_LINEBREAK
454 extra_check = wp->w_p_lbr;
455#endif
456#ifdef FEAT_SYN_HL
457 if (syntax_present(wp) && !wp->w_s->b_syn_error
458# ifdef SYN_TIME_LIMIT
459 && !wp->w_s->b_syn_slow
460# endif
461 )
462 {
463 // Prepare for syntax highlighting in this line. When there is an
464 // error, stop syntax highlighting.
465 save_did_emsg = did_emsg;
466 did_emsg = FALSE;
467 syntax_start(wp, lnum);
468 if (did_emsg)
469 wp->w_s->b_syn_error = TRUE;
470 else
471 {
472 did_emsg = save_did_emsg;
473#ifdef SYN_TIME_LIMIT
474 if (!wp->w_s->b_syn_slow)
475#endif
476 {
477 has_syntax = TRUE;
478 extra_check = TRUE;
479 }
480 }
481 }
482
483 // Check for columns to display for 'colorcolumn'.
484 color_cols = wp->w_p_cc_cols;
485 if (color_cols != NULL)
486 draw_color_col = advance_color_col(VCOL_HLC, &color_cols);
487#endif
488
489#ifdef FEAT_TERMINAL
490 if (term_show_buffer(wp->w_buffer))
491 {
492 extra_check = TRUE;
493 get_term_attr = TRUE;
494 win_attr = term_get_attr(wp->w_buffer, lnum, -1);
495 }
496#endif
497
498#ifdef FEAT_SPELL
499 if (wp->w_p_spell
500 && *wp->w_s->b_p_spl != NUL
501 && wp->w_s->b_langp.ga_len > 0
502 && *(char **)(wp->w_s->b_langp.ga_data) != NULL)
503 {
504 // Prepare for spell checking.
505 has_spell = TRUE;
506 extra_check = TRUE;
507
508 // Get the start of the next line, so that words that wrap to the
509 // next line are found too: "et<line-break>al.".
510 // Trick: skip a few chars for C/shell/Vim comments
511 nextline[SPWORDLEN] = NUL;
512 if (lnum < wp->w_buffer->b_ml.ml_line_count)
513 {
514 line = ml_get_buf(wp->w_buffer, lnum + 1, FALSE);
515 spell_cat_line(nextline + SPWORDLEN, line, SPWORDLEN);
516 }
517
518 // When a word wrapped from the previous line the start of the
519 // current line is valid.
520 if (lnum == checked_lnum)
521 cur_checked_col = checked_col;
522 checked_lnum = 0;
523
524 // When there was a sentence end in the previous line may require a
525 // word starting with capital in this line. In line 1 always check
526 // the first word.
527 if (lnum != capcol_lnum)
528 cap_col = -1;
529 if (lnum == 1)
530 cap_col = 0;
531 capcol_lnum = 0;
532 }
533#endif
534
535 // handle Visual active in this window
536 if (VIsual_active && wp->w_buffer == curwin->w_buffer)
537 {
538 if (LTOREQ_POS(curwin->w_cursor, VIsual))
539 {
540 // Visual is after curwin->w_cursor
541 top = &curwin->w_cursor;
542 bot = &VIsual;
543 }
544 else
545 {
546 // Visual is before curwin->w_cursor
547 top = &VIsual;
548 bot = &curwin->w_cursor;
549 }
550 lnum_in_visual_area = (lnum >= top->lnum && lnum <= bot->lnum);
551 if (VIsual_mode == Ctrl_V)
552 {
553 // block mode
554 if (lnum_in_visual_area)
555 {
556 fromcol = wp->w_old_cursor_fcol;
557 tocol = wp->w_old_cursor_lcol;
558 }
559 }
560 else
561 {
562 // non-block mode
563 if (lnum > top->lnum && lnum <= bot->lnum)
564 fromcol = 0;
565 else if (lnum == top->lnum)
566 {
567 if (VIsual_mode == 'V') // linewise
568 fromcol = 0;
569 else
570 {
571 getvvcol(wp, top, (colnr_T *)&fromcol, NULL, NULL);
572 if (gchar_pos(top) == NUL)
573 tocol = fromcol + 1;
574 }
575 }
576 if (VIsual_mode != 'V' && lnum == bot->lnum)
577 {
578 if (*p_sel == 'e' && bot->col == 0 && bot->coladd == 0)
579 {
580 fromcol = -10;
581 tocol = MAXCOL;
582 }
583 else if (bot->col == MAXCOL)
584 tocol = MAXCOL;
585 else
586 {
587 pos = *bot;
588 if (*p_sel == 'e')
589 getvvcol(wp, &pos, (colnr_T *)&tocol, NULL, NULL);
590 else
591 {
592 getvvcol(wp, &pos, NULL, NULL, (colnr_T *)&tocol);
593 ++tocol;
594 }
595 }
596 }
597 }
598
599 // Check if the character under the cursor should not be inverted
Bram Moolenaar6656c2e2019-10-24 15:00:04 +0200600 if (!highlight_match && lnum == curwin->w_cursor.lnum
601 && wp == curwin
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200602#ifdef FEAT_GUI
603 && !gui.in_use
604#endif
605 )
606 noinvcur = TRUE;
607
608 // if inverting in this line set area_highlighting
609 if (fromcol >= 0)
610 {
611 area_highlighting = TRUE;
612 vi_attr = HL_ATTR(HLF_V);
613#if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
614 if ((clip_star.available && !clip_star.owned
615 && clip_isautosel_star())
616 || (clip_plus.available && !clip_plus.owned
617 && clip_isautosel_plus()))
618 vi_attr = HL_ATTR(HLF_VNC);
619#endif
620 }
621 }
622
623 // handle 'incsearch' and ":s///c" highlighting
624 else if (highlight_match
625 && wp == curwin
626 && lnum >= curwin->w_cursor.lnum
627 && lnum <= curwin->w_cursor.lnum + search_match_lines)
628 {
629 if (lnum == curwin->w_cursor.lnum)
630 getvcol(curwin, &(curwin->w_cursor),
631 (colnr_T *)&fromcol, NULL, NULL);
632 else
633 fromcol = 0;
634 if (lnum == curwin->w_cursor.lnum + search_match_lines)
635 {
636 pos.lnum = lnum;
637 pos.col = search_match_endcol;
638 getvcol(curwin, &pos, (colnr_T *)&tocol, NULL, NULL);
639 }
640 else
641 tocol = MAXCOL;
642 // do at least one character; happens when past end of line
643 if (fromcol == tocol)
644 tocol = fromcol + 1;
645 area_highlighting = TRUE;
646 vi_attr = HL_ATTR(HLF_I);
647 }
648 }
649
650#ifdef FEAT_DIFF
651 filler_lines = diff_check(wp, lnum);
652 if (filler_lines < 0)
653 {
654 if (filler_lines == -1)
655 {
656 if (diff_find_change(wp, lnum, &change_start, &change_end))
657 diff_hlf = HLF_ADD; // added line
658 else if (change_start == 0)
659 diff_hlf = HLF_TXD; // changed text
660 else
661 diff_hlf = HLF_CHD; // changed line
662 }
663 else
664 diff_hlf = HLF_ADD; // added line
665 filler_lines = 0;
666 area_highlighting = TRUE;
667 }
668 if (lnum == wp->w_topline)
669 filler_lines = wp->w_topfill;
670 filler_todo = filler_lines;
671#endif
672
673#ifdef FEAT_SIGNS
Bram Moolenaar4eb7dae2019-11-12 22:33:45 +0100674 sign_present = buf_get_signattrs(wp, lnum, &sattr);
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200675#endif
676
677#ifdef LINE_ATTR
678# ifdef FEAT_SIGNS
679 // If this line has a sign with line highlighting set line_attr.
680 if (sign_present)
Bram Moolenaar6656c2e2019-10-24 15:00:04 +0200681 line_attr = sattr.sat_linehl;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200682# endif
683# if defined(FEAT_QUICKFIX)
684 // Highlight the current line in the quickfix window.
685 if (bt_quickfix(wp->w_buffer) && qf_current_entry(wp) == lnum)
686 line_attr = HL_ATTR(HLF_QFL);
687# endif
688 if (line_attr != 0)
689 area_highlighting = TRUE;
690#endif
691
692 line = ml_get_buf(wp->w_buffer, lnum, FALSE);
693 ptr = line;
694
695#ifdef FEAT_SPELL
696 if (has_spell && !number_only)
697 {
698 // For checking first word with a capital skip white space.
699 if (cap_col == 0)
700 cap_col = getwhitecols(line);
701
702 // To be able to spell-check over line boundaries copy the end of the
703 // current line into nextline[]. Above the start of the next line was
704 // copied to nextline[SPWORDLEN].
705 if (nextline[SPWORDLEN] == NUL)
706 {
707 // No next line or it is empty.
708 nextlinecol = MAXCOL;
709 nextline_idx = 0;
710 }
711 else
712 {
713 v = (long)STRLEN(line);
714 if (v < SPWORDLEN)
715 {
716 // Short line, use it completely and append the start of the
717 // next line.
718 nextlinecol = 0;
719 mch_memmove(nextline, line, (size_t)v);
720 STRMOVE(nextline + v, nextline + SPWORDLEN);
721 nextline_idx = v + 1;
722 }
723 else
724 {
725 // Long line, use only the last SPWORDLEN bytes.
726 nextlinecol = v - SPWORDLEN;
727 mch_memmove(nextline, line + nextlinecol, SPWORDLEN);
728 nextline_idx = SPWORDLEN + 1;
729 }
730 }
731 }
732#endif
733
734 if (wp->w_p_list)
735 {
736 if (lcs_space || lcs_trail || lcs_nbsp)
737 extra_check = TRUE;
738 // find start of trailing whitespace
739 if (lcs_trail)
740 {
741 trailcol = (colnr_T)STRLEN(ptr);
742 while (trailcol > (colnr_T)0 && VIM_ISWHITE(ptr[trailcol - 1]))
743 --trailcol;
744 trailcol += (colnr_T) (ptr - line);
745 }
746 }
747
748 wcr_attr = get_wcr_attr(wp);
749 if (wcr_attr != 0)
750 {
751 win_attr = wcr_attr;
752 area_highlighting = TRUE;
753 }
Bram Moolenaar34390282019-10-16 14:38:26 +0200754
Bram Moolenaar7528d1f2019-09-19 23:06:20 +0200755#ifdef FEAT_TEXT_PROP
756 if (WIN_IS_POPUP(wp))
757 screen_line_flags |= SLF_POPUP;
758#endif
759
760 // 'nowrap' or 'wrap' and a single line that doesn't fit: Advance to the
761 // first character to be displayed.
762 if (wp->w_p_wrap)
763 v = wp->w_skipcol;
764 else
765 v = wp->w_leftcol;
766 if (v > 0 && !number_only)
767 {
768 char_u *prev_ptr = ptr;
769
770 while (vcol < v && *ptr != NUL)
771 {
772 c = win_lbr_chartabsize(wp, line, ptr, (colnr_T)vcol, NULL);
773 vcol += c;
774 prev_ptr = ptr;
775 MB_PTR_ADV(ptr);
776 }
777
778 // When:
779 // - 'cuc' is set, or
780 // - 'colorcolumn' is set, or
781 // - 'virtualedit' is set, or
782 // - the visual mode is active,
783 // the end of the line may be before the start of the displayed part.
784 if (vcol < v && (
785#ifdef FEAT_SYN_HL
786 wp->w_p_cuc || draw_color_col ||
787#endif
788 virtual_active() ||
789 (VIsual_active && wp->w_buffer == curwin->w_buffer)))
790 vcol = v;
791
792 // Handle a character that's not completely on the screen: Put ptr at
793 // that character but skip the first few screen characters.
794 if (vcol > v)
795 {
796 vcol -= c;
797 ptr = prev_ptr;
798 // If the character fits on the screen, don't need to skip it.
799 // Except for a TAB.
800 if (( (*mb_ptr2cells)(ptr) >= c || *ptr == TAB) && col == 0)
801 n_skip = v - vcol;
802 }
803
804 // Adjust for when the inverted text is before the screen,
805 // and when the start of the inverted text is before the screen.
806 if (tocol <= vcol)
807 fromcol = 0;
808 else if (fromcol >= 0 && fromcol < vcol)
809 fromcol = vcol;
810
811#ifdef FEAT_LINEBREAK
812 // When w_skipcol is non-zero, first line needs 'showbreak'
813 if (wp->w_p_wrap)
814 need_showbreak = TRUE;
815#endif
816#ifdef FEAT_SPELL
817 // When spell checking a word we need to figure out the start of the
818 // word and if it's badly spelled or not.
819 if (has_spell)
820 {
821 int len;
822 colnr_T linecol = (colnr_T)(ptr - line);
823 hlf_T spell_hlf = HLF_COUNT;
824
825 pos = wp->w_cursor;
826 wp->w_cursor.lnum = lnum;
827 wp->w_cursor.col = linecol;
828 len = spell_move_to(wp, FORWARD, TRUE, TRUE, &spell_hlf);
829
830 // spell_move_to() may call ml_get() and make "line" invalid
831 line = ml_get_buf(wp->w_buffer, lnum, FALSE);
832 ptr = line + linecol;
833
834 if (len == 0 || (int)wp->w_cursor.col > ptr - line)
835 {
836 // no bad word found at line start, don't check until end of a
837 // word
838 spell_hlf = HLF_COUNT;
839 word_end = (int)(spell_to_word_end(ptr, wp) - line + 1);
840 }
841 else
842 {
843 // bad word found, use attributes until end of word
844 word_end = wp->w_cursor.col + len + 1;
845
846 // Turn index into actual attributes.
847 if (spell_hlf != HLF_COUNT)
848 spell_attr = highlight_attr[spell_hlf];
849 }
850 wp->w_cursor = pos;
851
852# ifdef FEAT_SYN_HL
853 // Need to restart syntax highlighting for this line.
854 if (has_syntax)
855 syntax_start(wp, lnum);
856# endif
857 }
858#endif
859 }
860
861 // Correct highlighting for cursor that can't be disabled.
862 // Avoids having to check this for each character.
863 if (fromcol >= 0)
864 {
865 if (noinvcur)
866 {
867 if ((colnr_T)fromcol == wp->w_virtcol)
868 {
869 // highlighting starts at cursor, let it start just after the
870 // cursor
871 fromcol_prev = fromcol;
872 fromcol = -1;
873 }
874 else if ((colnr_T)fromcol < wp->w_virtcol)
875 // restart highlighting after the cursor
876 fromcol_prev = wp->w_virtcol;
877 }
878 if (fromcol >= tocol)
879 fromcol = -1;
880 }
881
882#ifdef FEAT_SEARCH_EXTRA
883 if (!number_only)
884 {
885 v = (long)(ptr - line);
886 area_highlighting |= prepare_search_hl_line(wp, lnum, (colnr_T)v,
887 &line, &screen_search_hl,
888 &search_attr);
889 ptr = line + v; // "line" may have been updated
890 }
891#endif
892
893#ifdef FEAT_SYN_HL
894 // Cursor line highlighting for 'cursorline' in the current window.
895 if (wp->w_p_cul && lnum == wp->w_cursor.lnum)
896 {
897 // Do not show the cursor line in the text when Visual mode is active,
898 // because it's not clear what is selected then. Do update
899 // w_last_cursorline.
900 if (!(wp == curwin && VIsual_active)
901 && wp->w_p_culopt_flags != CULOPT_NBR)
902 {
903 cul_screenline = (wp->w_p_wrap
904 && (wp->w_p_culopt_flags & CULOPT_SCRLINE));
905
906 // Only set line_attr here when "screenline" is not present in
907 // 'cursorlineopt'. Otherwise it's done later.
908 if (!cul_screenline)
909 {
910 cul_attr = HL_ATTR(HLF_CUL);
911 line_attr = cul_attr;
912 wp->w_last_cursorline = wp->w_cursor.lnum;
913 }
914 else
915 {
916 line_attr_save = line_attr;
917 wp->w_last_cursorline = 0;
918 margin_columns_win(wp, &left_curline_col, &right_curline_col);
919 }
920 area_highlighting = TRUE;
921 }
922 else
923 wp->w_last_cursorline = wp->w_cursor.lnum;
924 }
925#endif
926
927#ifdef FEAT_TEXT_PROP
928 {
929 char_u *prop_start;
930
931 text_prop_count = get_text_props(wp->w_buffer, lnum,
932 &prop_start, FALSE);
933 if (text_prop_count > 0)
934 {
935 // Make a copy of the properties, so that they are properly
936 // aligned.
937 text_props = ALLOC_MULT(textprop_T, text_prop_count);
938 if (text_props != NULL)
939 mch_memmove(text_props, prop_start,
940 text_prop_count * sizeof(textprop_T));
941
942 // Allocate an array for the indexes.
943 text_prop_idxs = ALLOC_MULT(int, text_prop_count);
944 area_highlighting = TRUE;
945 extra_check = TRUE;
946 }
947 }
948#endif
949
950 off = (unsigned)(current_ScreenLine - ScreenLines);
951 col = 0;
952
953#ifdef FEAT_RIGHTLEFT
954 if (wp->w_p_rl)
955 {
956 // Rightleft window: process the text in the normal direction, but put
957 // it in current_ScreenLine[] from right to left. Start at the
958 // rightmost column of the window.
959 col = wp->w_width - 1;
960 off += col;
961 screen_line_flags |= SLF_RIGHTLEFT;
962 }
963#endif
964
965 // Repeat for the whole displayed line.
966 for (;;)
967 {
968#if defined(FEAT_CONCEAL) || defined(FEAT_SEARCH_EXTRA)
969 int has_match_conc = 0; // match wants to conceal
970#endif
971#ifdef FEAT_CONCEAL
972 int did_decrement_ptr = FALSE;
973#endif
974 // Skip this quickly when working on the text.
975 if (draw_state != WL_LINE)
976 {
977#ifdef FEAT_CMDWIN
978 if (draw_state == WL_CMDLINE - 1 && n_extra == 0)
979 {
980 draw_state = WL_CMDLINE;
981 if (cmdwin_type != 0 && wp == curwin)
982 {
983 // Draw the cmdline character.
984 n_extra = 1;
985 c_extra = cmdwin_type;
986 c_final = NUL;
987 char_attr = hl_combine_attr(wcr_attr, HL_ATTR(HLF_AT));
988 }
989 }
990#endif
991
992#ifdef FEAT_FOLDING
993 if (draw_state == WL_FOLD - 1 && n_extra == 0)
994 {
995 int fdc = compute_foldcolumn(wp, 0);
996
997 draw_state = WL_FOLD;
998 if (fdc > 0)
999 {
1000 // Draw the 'foldcolumn'. Allocate a buffer, "extra" may
1001 // already be in use.
1002 vim_free(p_extra_free);
1003 p_extra_free = alloc(12 + 1);
1004
1005 if (p_extra_free != NULL)
1006 {
1007 fill_foldcolumn(p_extra_free, wp, FALSE, lnum);
1008 n_extra = fdc;
1009 p_extra_free[n_extra] = NUL;
1010 p_extra = p_extra_free;
1011 c_extra = NUL;
1012 c_final = NUL;
1013 char_attr = hl_combine_attr(wcr_attr, HL_ATTR(HLF_FC));
1014 }
1015 }
1016 }
1017#endif
1018
1019#ifdef FEAT_SIGNS
1020 if (draw_state == WL_SIGN - 1 && n_extra == 0)
1021 {
1022 draw_state = WL_SIGN;
1023 // Show the sign column when there are any signs in this
1024 // buffer or when using Netbeans.
1025 if (signcolumn_on(wp))
1026 get_sign_display_info(FALSE, wp, lnum, &sattr, wcr_attr,
1027 row, startrow, filler_lines, filler_todo, &c_extra,
1028 &c_final, extra, &p_extra, &n_extra, &char_attr);
1029 }
1030#endif
1031
1032 if (draw_state == WL_NR - 1 && n_extra == 0)
1033 {
1034 draw_state = WL_NR;
1035 // Display the absolute or relative line number. After the
1036 // first fill with blanks when the 'n' flag isn't in 'cpo'
1037 if ((wp->w_p_nu || wp->w_p_rnu)
1038 && (row == startrow
1039#ifdef FEAT_DIFF
1040 + filler_lines
1041#endif
1042 || vim_strchr(p_cpo, CPO_NUMCOL) == NULL))
1043 {
1044#ifdef FEAT_SIGNS
1045 // If 'signcolumn' is set to 'number' and a sign is present
1046 // in 'lnum', then display the sign instead of the line
1047 // number.
1048 if ((*wp->w_p_scl == 'n' && *(wp->w_p_scl + 1) == 'u')
1049 && sign_present)
1050 get_sign_display_info(TRUE, wp, lnum, &sattr, wcr_attr,
1051 row, startrow, filler_lines, filler_todo,
1052 &c_extra, &c_final, extra, &p_extra, &n_extra,
1053 &char_attr);
1054 else
1055#endif
1056 {
1057 // Draw the line number (empty space after wrapping).
1058 if (row == startrow
1059#ifdef FEAT_DIFF
1060 + filler_lines
1061#endif
1062 )
1063 {
1064 long num;
1065 char *fmt = "%*ld ";
1066
1067 if (wp->w_p_nu && !wp->w_p_rnu)
1068 // 'number' + 'norelativenumber'
1069 num = (long)lnum;
1070 else
1071 {
1072 // 'relativenumber', don't use negative numbers
1073 num = labs((long)get_cursor_rel_lnum(wp, lnum));
1074 if (num == 0 && wp->w_p_nu && wp->w_p_rnu)
1075 {
1076 // 'number' + 'relativenumber'
1077 num = lnum;
1078 fmt = "%-*ld ";
1079 }
1080 }
1081
1082 sprintf((char *)extra, fmt,
1083 number_width(wp), num);
1084 if (wp->w_skipcol > 0)
1085 for (p_extra = extra; *p_extra == ' '; ++p_extra)
1086 *p_extra = '-';
1087#ifdef FEAT_RIGHTLEFT
1088 if (wp->w_p_rl) // reverse line numbers
1089 {
1090 char_u *p1, *p2;
1091 int t;
1092
1093 // like rl_mirror(), but keep the space at the end
1094 p2 = skiptowhite(extra) - 1;
1095 for (p1 = extra; p1 < p2; ++p1, --p2)
1096 {
1097 t = *p1;
1098 *p1 = *p2;
1099 *p2 = t;
1100 }
1101 }
1102#endif
1103 p_extra = extra;
1104 c_extra = NUL;
1105 c_final = NUL;
1106 }
1107 else
1108 {
1109 c_extra = ' ';
1110 c_final = NUL;
1111 }
1112 n_extra = number_width(wp) + 1;
1113 char_attr = hl_combine_attr(wcr_attr, HL_ATTR(HLF_N));
1114#ifdef FEAT_SYN_HL
1115 // When 'cursorline' is set highlight the line number of
1116 // the current line differently.
1117 // When 'cursorlineopt' has "screenline" only highlight
1118 // the line number itself.
1119 // TODO: Can we use CursorLine instead of CursorLineNr
1120 // when CursorLineNr isn't set?
Bram Moolenaar49474ca2019-10-05 21:57:12 +02001121 if (wp->w_p_cul
1122 && lnum == wp->w_cursor.lnum
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001123 && (wp->w_p_culopt_flags & CULOPT_NBR)
1124 && (row == startrow
Bram Moolenaar49474ca2019-10-05 21:57:12 +02001125 || wp->w_p_culopt_flags & CULOPT_LINE))
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001126 char_attr = hl_combine_attr(wcr_attr, HL_ATTR(HLF_CLN));
1127#endif
Bram Moolenaarefae76a2019-10-27 22:54:58 +01001128 if (wp->w_p_rnu && lnum < wp->w_cursor.lnum
1129 && HL_ATTR(HLF_LNA) != 0)
1130 // Use LineNrAbove
1131 char_attr = hl_combine_attr(wcr_attr,
1132 HL_ATTR(HLF_LNA));
1133 if (wp->w_p_rnu && lnum > wp->w_cursor.lnum
1134 && HL_ATTR(HLF_LNB) != 0)
1135 // Use LineNrBelow
1136 char_attr = hl_combine_attr(wcr_attr,
1137 HL_ATTR(HLF_LNB));
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001138 }
1139 }
1140 }
1141
1142#ifdef FEAT_LINEBREAK
1143 if (wp->w_p_brisbr && draw_state == WL_BRI - 1
Bram Moolenaaree857022019-11-09 23:26:40 +01001144 && n_extra == 0 && *get_showbreak_value(wp) != NUL)
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001145 // draw indent after showbreak value
1146 draw_state = WL_BRI;
1147 else if (wp->w_p_brisbr && draw_state == WL_SBR && n_extra == 0)
1148 // After the showbreak, draw the breakindent
1149 draw_state = WL_BRI - 1;
1150
1151 // draw 'breakindent': indent wrapped text accordingly
1152 if (draw_state == WL_BRI - 1 && n_extra == 0)
1153 {
1154 draw_state = WL_BRI;
1155 // if need_showbreak is set, breakindent also applies
1156 if (wp->w_p_bri && n_extra == 0
1157 && (row != startrow || need_showbreak)
1158# ifdef FEAT_DIFF
1159 && filler_lines == 0
1160# endif
1161 )
1162 {
1163 char_attr = 0;
1164# ifdef FEAT_DIFF
1165 if (diff_hlf != (hlf_T)0)
1166 {
1167 char_attr = HL_ATTR(diff_hlf);
1168# ifdef FEAT_SYN_HL
1169 if (cul_attr != 0)
1170 char_attr = hl_combine_attr(char_attr, cul_attr);
1171# endif
1172 }
1173# endif
1174 p_extra = NULL;
1175 c_extra = ' ';
Bram Moolenaar2f7b7b12019-11-03 15:46:48 +01001176 c_final = NUL;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001177 n_extra = get_breakindent_win(wp,
1178 ml_get_buf(wp->w_buffer, lnum, FALSE));
1179 // Correct end of highlighted area for 'breakindent',
1180 // required when 'linebreak' is also set.
1181 if (tocol == vcol)
1182 tocol += n_extra;
1183 }
1184 }
1185#endif
1186
1187#if defined(FEAT_LINEBREAK) || defined(FEAT_DIFF)
1188 if (draw_state == WL_SBR - 1 && n_extra == 0)
1189 {
Bram Moolenaaree857022019-11-09 23:26:40 +01001190 char_u *sbr;
1191
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001192 draw_state = WL_SBR;
1193# ifdef FEAT_DIFF
1194 if (filler_todo > 0)
1195 {
1196 // Draw "deleted" diff line(s).
1197 if (char2cells(fill_diff) > 1)
1198 {
1199 c_extra = '-';
1200 c_final = NUL;
1201 }
1202 else
1203 {
1204 c_extra = fill_diff;
1205 c_final = NUL;
1206 }
1207# ifdef FEAT_RIGHTLEFT
1208 if (wp->w_p_rl)
1209 n_extra = col + 1;
1210 else
1211# endif
1212 n_extra = wp->w_width - col;
1213 char_attr = HL_ATTR(HLF_DED);
1214 }
1215# endif
1216# ifdef FEAT_LINEBREAK
Bram Moolenaaree857022019-11-09 23:26:40 +01001217 sbr = get_showbreak_value(wp);
1218 if (*sbr != NUL && need_showbreak)
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001219 {
1220 // Draw 'showbreak' at the start of each broken line.
Bram Moolenaaree857022019-11-09 23:26:40 +01001221 p_extra = sbr;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001222 c_extra = NUL;
1223 c_final = NUL;
Bram Moolenaaree857022019-11-09 23:26:40 +01001224 n_extra = (int)STRLEN(sbr);
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001225 char_attr = HL_ATTR(HLF_AT);
1226 need_showbreak = FALSE;
Bram Moolenaaree857022019-11-09 23:26:40 +01001227 vcol_sbr = vcol + MB_CHARLEN(sbr);
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001228 // Correct end of highlighted area for 'showbreak',
1229 // required when 'linebreak' is also set.
1230 if (tocol == vcol)
1231 tocol += n_extra;
1232 // combine 'showbreak' with 'wincolor'
1233 if (win_attr != 0)
1234 char_attr = hl_combine_attr(win_attr, char_attr);
1235# ifdef FEAT_SYN_HL
1236 // combine 'showbreak' with 'cursorline'
1237 if (cul_attr != 0)
1238 char_attr = hl_combine_attr(char_attr, cul_attr);
1239# endif
1240 }
1241# endif
1242 }
1243#endif
1244
1245 if (draw_state == WL_LINE - 1 && n_extra == 0)
1246 {
1247 draw_state = WL_LINE;
1248 if (saved_n_extra)
1249 {
1250 // Continue item from end of wrapped line.
1251 n_extra = saved_n_extra;
1252 c_extra = saved_c_extra;
1253 c_final = saved_c_final;
1254 p_extra = saved_p_extra;
1255 char_attr = saved_char_attr;
1256 }
1257 else
1258 char_attr = win_attr;
1259 }
1260 }
1261#ifdef FEAT_SYN_HL
1262 if (cul_screenline)
1263 {
1264 if (draw_state == WL_LINE
1265 && vcol >= left_curline_col
1266 && vcol < right_curline_col)
1267 {
1268 cul_attr = HL_ATTR(HLF_CUL);
1269 line_attr = cul_attr;
1270 }
1271 else
1272 {
1273 cul_attr = 0;
1274 line_attr = line_attr_save;
1275 }
1276 }
1277#endif
1278
1279 // When still displaying '$' of change command, stop at cursor.
1280 // When only displaying the (relative) line number and that's done,
1281 // stop here.
1282 if ((dollar_vcol >= 0 && wp == curwin
1283 && lnum == wp->w_cursor.lnum && vcol >= (long)wp->w_virtcol
1284#ifdef FEAT_DIFF
1285 && filler_todo <= 0
1286#endif
1287 )
1288 || (number_only && draw_state > WL_NR))
1289 {
1290 screen_line(screen_row, wp->w_wincol, col, -(int)wp->w_width,
1291 screen_line_flags);
1292 // Pretend we have finished updating the window. Except when
1293 // 'cursorcolumn' is set.
1294#ifdef FEAT_SYN_HL
1295 if (wp->w_p_cuc)
1296 row = wp->w_cline_row + wp->w_cline_height;
1297 else
1298#endif
1299 row = wp->w_height;
1300 break;
1301 }
1302
Bram Moolenaar34390282019-10-16 14:38:26 +02001303 if (draw_state == WL_LINE && (area_highlighting || extra_check))
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001304 {
1305 // handle Visual or match highlighting in this line
1306 if (vcol == fromcol
1307 || (has_mbyte && vcol + 1 == fromcol && n_extra == 0
1308 && (*mb_ptr2cells)(ptr) > 1)
1309 || ((int)vcol_prev == fromcol_prev
1310 && vcol_prev < vcol // not at margin
1311 && vcol < tocol))
1312 area_attr = vi_attr; // start highlighting
1313 else if (area_attr != 0
1314 && (vcol == tocol
1315 || (noinvcur && (colnr_T)vcol == wp->w_virtcol)))
1316 area_attr = 0; // stop highlighting
1317
1318#ifdef FEAT_SEARCH_EXTRA
1319 if (!n_extra)
1320 {
1321 // Check for start/end of 'hlsearch' and other matches.
1322 // After end, check for start/end of next match.
1323 // When another match, have to check for start again.
1324 v = (long)(ptr - line);
1325 search_attr = update_search_hl(wp, lnum, (colnr_T)v, &line,
1326 &screen_search_hl, &has_match_conc,
1327 &match_conc, did_line_attr, lcs_eol_one);
1328 ptr = line + v; // "line" may have been changed
1329 }
1330#endif
1331
1332#ifdef FEAT_DIFF
1333 if (diff_hlf != (hlf_T)0)
1334 {
1335 if (diff_hlf == HLF_CHD && ptr - line >= change_start
1336 && n_extra == 0)
1337 diff_hlf = HLF_TXD; // changed text
1338 if (diff_hlf == HLF_TXD && ptr - line > change_end
1339 && n_extra == 0)
1340 diff_hlf = HLF_CHD; // changed line
1341 line_attr = HL_ATTR(diff_hlf);
1342 if (wp->w_p_cul && lnum == wp->w_cursor.lnum
1343 && wp->w_p_culopt_flags != CULOPT_NBR
1344 && (!cul_screenline || (vcol >= left_curline_col
1345 && vcol <= right_curline_col)))
1346 line_attr = hl_combine_attr(
1347 line_attr, HL_ATTR(HLF_CUL));
1348 }
1349#endif
1350
1351#ifdef FEAT_TEXT_PROP
1352 if (text_props != NULL)
1353 {
1354 int pi;
1355 int bcol = (int)(ptr - line);
1356
1357 if (n_extra > 0)
1358 --bcol; // still working on the previous char, e.g. Tab
1359
1360 // Check if any active property ends.
1361 for (pi = 0; pi < text_props_active; ++pi)
1362 {
1363 int tpi = text_prop_idxs[pi];
1364
1365 if (bcol >= text_props[tpi].tp_col - 1
1366 + text_props[tpi].tp_len)
1367 {
1368 if (pi + 1 < text_props_active)
1369 mch_memmove(text_prop_idxs + pi,
1370 text_prop_idxs + pi + 1,
1371 sizeof(int)
1372 * (text_props_active - (pi + 1)));
1373 --text_props_active;
1374 --pi;
1375 }
1376 }
1377
1378 // Add any text property that starts in this column.
1379 while (text_prop_next < text_prop_count
1380 && bcol >= text_props[text_prop_next].tp_col - 1)
1381 text_prop_idxs[text_props_active++] = text_prop_next++;
1382
1383 text_prop_attr = 0;
1384 text_prop_combine = FALSE;
Bram Moolenaar053f7122019-09-23 22:17:15 +02001385 text_prop_type = NULL;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001386 if (text_props_active > 0)
1387 {
1388 // Sort the properties on priority and/or starting last.
1389 // Then combine the attributes, highest priority last.
1390 current_text_props = text_props;
1391 current_buf = wp->w_buffer;
1392 qsort((void *)text_prop_idxs, (size_t)text_props_active,
1393 sizeof(int), text_prop_compare);
1394
1395 for (pi = 0; pi < text_props_active; ++pi)
1396 {
1397 int tpi = text_prop_idxs[pi];
1398 proptype_T *pt = text_prop_type_by_id(
1399 wp->w_buffer, text_props[tpi].tp_type);
1400
1401 if (pt != NULL && pt->pt_hl_id > 0)
1402 {
1403 int pt_attr = syn_id2attr(pt->pt_hl_id);
1404
1405 text_prop_type = pt;
1406 text_prop_attr =
1407 hl_combine_attr(text_prop_attr, pt_attr);
1408 text_prop_combine = pt->pt_flags & PT_FLAG_COMBINE;
1409 }
1410 }
1411 }
1412 }
1413#endif
1414
Bram Moolenaara74fda62019-10-19 17:38:03 +02001415#ifdef FEAT_SYN_HL
Bram Moolenaara74fda62019-10-19 17:38:03 +02001416 if (extra_check && n_extra == 0)
Bram Moolenaar34390282019-10-16 14:38:26 +02001417 {
Bram Moolenaar82260af2019-10-20 13:16:22 +02001418 syntax_attr = 0;
Bram Moolenaara74fda62019-10-19 17:38:03 +02001419# ifdef FEAT_TERMINAL
Bram Moolenaar34390282019-10-16 14:38:26 +02001420 if (get_term_attr)
Bram Moolenaar34390282019-10-16 14:38:26 +02001421 syntax_attr = term_get_attr(wp->w_buffer, lnum, vcol);
Bram Moolenaara74fda62019-10-19 17:38:03 +02001422# endif
Bram Moolenaar34390282019-10-16 14:38:26 +02001423 // Get syntax attribute.
1424 if (has_syntax)
1425 {
1426 // Get the syntax attribute for the character. If there
1427 // is an error, disable syntax highlighting.
1428 save_did_emsg = did_emsg;
1429 did_emsg = FALSE;
1430
1431 v = (long)(ptr - line);
Bram Moolenaar9115c612019-10-16 16:57:06 +02001432 if (v == prev_syntax_col)
1433 // at same column again
1434 syntax_attr = prev_syntax_attr;
1435 else
1436 {
Bram Moolenaarb2fe1d62019-10-16 21:33:40 +02001437# ifdef FEAT_SPELL
Bram Moolenaar9115c612019-10-16 16:57:06 +02001438 can_spell = TRUE;
Bram Moolenaarb2fe1d62019-10-16 21:33:40 +02001439# endif
Bram Moolenaar9115c612019-10-16 16:57:06 +02001440 syntax_attr = get_syntax_attr((colnr_T)v,
Bram Moolenaar34390282019-10-16 14:38:26 +02001441# ifdef FEAT_SPELL
1442 has_spell ? &can_spell :
1443# endif
1444 NULL, FALSE);
Bram Moolenaar9115c612019-10-16 16:57:06 +02001445 prev_syntax_col = v;
1446 prev_syntax_attr = syntax_attr;
1447 }
Bram Moolenaar34390282019-10-16 14:38:26 +02001448
Bram Moolenaar34390282019-10-16 14:38:26 +02001449 if (did_emsg)
1450 {
1451 wp->w_s->b_syn_error = TRUE;
1452 has_syntax = FALSE;
1453 syntax_attr = 0;
1454 }
1455 else
1456 did_emsg = save_did_emsg;
1457# ifdef SYN_TIME_LIMIT
1458 if (wp->w_s->b_syn_slow)
1459 has_syntax = FALSE;
1460# endif
1461
1462 // Need to get the line again, a multi-line regexp may
1463 // have made it invalid.
1464 line = ml_get_buf(wp->w_buffer, lnum, FALSE);
1465 ptr = line + v;
1466# ifdef FEAT_CONCEAL
1467 // no concealing past the end of the line, it interferes
1468 // with line highlighting
1469 if (*ptr == NUL)
1470 syntax_flags = 0;
1471 else
1472 syntax_flags = get_syntax_info(&syntax_seqnr);
1473# endif
1474 }
Bram Moolenaar34390282019-10-16 14:38:26 +02001475 }
Bram Moolenaardbd43162019-11-09 21:28:14 +01001476# ifdef FEAT_TEXT_PROP
1477 // Combine text property highlight into syntax highlight.
1478 if (text_prop_type != NULL)
1479 {
1480 if (text_prop_combine)
1481 syntax_attr = hl_combine_attr(syntax_attr, text_prop_attr);
1482 else
1483 syntax_attr = text_prop_attr;
1484 }
1485# endif
Bram Moolenaara74fda62019-10-19 17:38:03 +02001486#endif
Bram Moolenaar34390282019-10-16 14:38:26 +02001487
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001488 // Decide which of the highlight attributes to use.
1489 attr_pri = TRUE;
1490#ifdef LINE_ATTR
1491 if (area_attr != 0)
Bram Moolenaar84590062019-10-18 23:12:20 +02001492 {
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001493 char_attr = hl_combine_attr(line_attr, area_attr);
Bram Moolenaar84590062019-10-18 23:12:20 +02001494# ifdef FEAT_SYN_HL
Bram Moolenaardbd43162019-11-09 21:28:14 +01001495 char_attr = hl_combine_attr(syntax_attr, char_attr);
Bram Moolenaar84590062019-10-18 23:12:20 +02001496# endif
1497 }
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001498 else if (search_attr != 0)
Bram Moolenaar84590062019-10-18 23:12:20 +02001499 {
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001500 char_attr = hl_combine_attr(line_attr, search_attr);
Bram Moolenaar84590062019-10-18 23:12:20 +02001501# ifdef FEAT_SYN_HL
Bram Moolenaardbd43162019-11-09 21:28:14 +01001502 char_attr = hl_combine_attr(syntax_attr, char_attr);
Bram Moolenaar84590062019-10-18 23:12:20 +02001503# endif
1504 }
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001505 else if (line_attr != 0 && ((fromcol == -10 && tocol == MAXCOL)
1506 || vcol < fromcol || vcol_prev < fromcol_prev
1507 || vcol >= tocol))
1508 {
1509 // Use line_attr when not in the Visual or 'incsearch' area
1510 // (area_attr may be 0 when "noinvcur" is set).
Bram Moolenaar34390282019-10-16 14:38:26 +02001511# ifdef FEAT_SYN_HL
Bram Moolenaardbd43162019-11-09 21:28:14 +01001512 char_attr = hl_combine_attr(syntax_attr, line_attr);
1513# else
1514 char_attr = line_attr;
Bram Moolenaar34390282019-10-16 14:38:26 +02001515# endif
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001516 attr_pri = FALSE;
1517 }
1518#else
1519 if (area_attr != 0)
1520 char_attr = area_attr;
1521 else if (search_attr != 0)
1522 char_attr = search_attr;
1523#endif
1524 else
1525 {
1526 attr_pri = FALSE;
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001527#ifdef FEAT_SYN_HL
Bram Moolenaardbd43162019-11-09 21:28:14 +01001528 char_attr = syntax_attr;
Bram Moolenaara74fda62019-10-19 17:38:03 +02001529#else
Bram Moolenaardbd43162019-11-09 21:28:14 +01001530 char_attr = 0;
Bram Moolenaara74fda62019-10-19 17:38:03 +02001531#endif
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001532 }
1533 }
Bram Moolenaar024dbd22019-11-02 22:00:15 +01001534
1535 // combine attribute with 'wincolor'
1536 if (win_attr != 0)
1537 {
1538 if (char_attr == 0)
1539 char_attr = win_attr;
1540 else
1541 char_attr = hl_combine_attr(win_attr, char_attr);
1542 }
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001543
1544 // Get the next character to put on the screen.
1545
1546 // The "p_extra" points to the extra stuff that is inserted to
1547 // represent special characters (non-printable stuff) and other
1548 // things. When all characters are the same, c_extra is used.
1549 // If c_final is set, it will compulsorily be used at the end.
1550 // "p_extra" must end in a NUL to avoid mb_ptr2len() reads past
1551 // "p_extra[n_extra]".
1552 // For the '$' of the 'list' option, n_extra == 1, p_extra == "".
1553 if (n_extra > 0)
1554 {
1555 if (c_extra != NUL || (n_extra == 1 && c_final != NUL))
1556 {
1557 c = (n_extra == 1 && c_final != NUL) ? c_final : c_extra;
1558 mb_c = c; // doesn't handle non-utf-8 multi-byte!
1559 if (enc_utf8 && utf_char2len(c) > 1)
1560 {
1561 mb_utf8 = TRUE;
1562 u8cc[0] = 0;
1563 c = 0xc0;
1564 }
1565 else
1566 mb_utf8 = FALSE;
1567 }
1568 else
1569 {
1570 c = *p_extra;
1571 if (has_mbyte)
1572 {
1573 mb_c = c;
1574 if (enc_utf8)
1575 {
1576 // If the UTF-8 character is more than one byte:
1577 // Decode it into "mb_c".
1578 mb_l = utfc_ptr2len(p_extra);
1579 mb_utf8 = FALSE;
1580 if (mb_l > n_extra)
1581 mb_l = 1;
1582 else if (mb_l > 1)
1583 {
1584 mb_c = utfc_ptr2char(p_extra, u8cc);
1585 mb_utf8 = TRUE;
1586 c = 0xc0;
1587 }
1588 }
1589 else
1590 {
1591 // if this is a DBCS character, put it in "mb_c"
1592 mb_l = MB_BYTE2LEN(c);
1593 if (mb_l >= n_extra)
1594 mb_l = 1;
1595 else if (mb_l > 1)
1596 mb_c = (c << 8) + p_extra[1];
1597 }
1598 if (mb_l == 0) // at the NUL at end-of-line
1599 mb_l = 1;
1600
1601 // If a double-width char doesn't fit display a '>' in the
1602 // last column.
1603 if ((
1604# ifdef FEAT_RIGHTLEFT
1605 wp->w_p_rl ? (col <= 0) :
1606# endif
1607 (col >= wp->w_width - 1))
1608 && (*mb_char2cells)(mb_c) == 2)
1609 {
1610 c = '>';
1611 mb_c = c;
1612 mb_l = 1;
1613 mb_utf8 = FALSE;
1614 multi_attr = HL_ATTR(HLF_AT);
1615#ifdef FEAT_SYN_HL
1616 if (cul_attr)
1617 multi_attr = hl_combine_attr(multi_attr, cul_attr);
1618#endif
1619 // put the pointer back to output the double-width
1620 // character at the start of the next line.
1621 ++n_extra;
1622 --p_extra;
1623 }
1624 else
1625 {
1626 n_extra -= mb_l - 1;
1627 p_extra += mb_l - 1;
1628 }
1629 }
1630 ++p_extra;
1631 }
1632 --n_extra;
1633 }
1634 else
1635 {
1636#ifdef FEAT_LINEBREAK
1637 int c0;
1638#endif
Bram Moolenaar2f7b7b12019-11-03 15:46:48 +01001639 VIM_CLEAR(p_extra_free);
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001640
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001641 // Get a character from the line itself.
1642 c = *ptr;
1643#ifdef FEAT_LINEBREAK
1644 c0 = *ptr;
1645#endif
1646 if (has_mbyte)
1647 {
1648 mb_c = c;
1649 if (enc_utf8)
1650 {
1651 // If the UTF-8 character is more than one byte: Decode it
1652 // into "mb_c".
1653 mb_l = utfc_ptr2len(ptr);
1654 mb_utf8 = FALSE;
1655 if (mb_l > 1)
1656 {
1657 mb_c = utfc_ptr2char(ptr, u8cc);
1658 // Overlong encoded ASCII or ASCII with composing char
1659 // is displayed normally, except a NUL.
1660 if (mb_c < 0x80)
1661 {
1662 c = mb_c;
1663#ifdef FEAT_LINEBREAK
1664 c0 = mb_c;
1665#endif
1666 }
1667 mb_utf8 = TRUE;
1668
1669 // At start of the line we can have a composing char.
1670 // Draw it as a space with a composing char.
1671 if (utf_iscomposing(mb_c))
1672 {
1673 int i;
1674
1675 for (i = Screen_mco - 1; i > 0; --i)
1676 u8cc[i] = u8cc[i - 1];
1677 u8cc[0] = mb_c;
1678 mb_c = ' ';
1679 }
1680 }
1681
1682 if ((mb_l == 1 && c >= 0x80)
1683 || (mb_l >= 1 && mb_c == 0)
1684 || (mb_l > 1 && (!vim_isprintc(mb_c))))
1685 {
1686 // Illegal UTF-8 byte: display as <xx>.
1687 // Non-BMP character : display as ? or fullwidth ?.
1688 transchar_hex(extra, mb_c);
1689# ifdef FEAT_RIGHTLEFT
1690 if (wp->w_p_rl) // reverse
1691 rl_mirror(extra);
1692# endif
1693 p_extra = extra;
1694 c = *p_extra;
1695 mb_c = mb_ptr2char_adv(&p_extra);
1696 mb_utf8 = (c >= 0x80);
1697 n_extra = (int)STRLEN(p_extra);
1698 c_extra = NUL;
1699 c_final = NUL;
1700 if (area_attr == 0 && search_attr == 0)
1701 {
1702 n_attr = n_extra + 1;
1703 extra_attr = HL_ATTR(HLF_8);
1704 saved_attr2 = char_attr; // save current attr
1705 }
1706 }
1707 else if (mb_l == 0) // at the NUL at end-of-line
1708 mb_l = 1;
1709#ifdef FEAT_ARABIC
1710 else if (p_arshape && !p_tbidi && ARABIC_CHAR(mb_c))
1711 {
1712 // Do Arabic shaping.
1713 int pc, pc1, nc;
1714 int pcc[MAX_MCO];
1715
1716 // The idea of what is the previous and next
1717 // character depends on 'rightleft'.
1718 if (wp->w_p_rl)
1719 {
1720 pc = prev_c;
1721 pc1 = prev_c1;
1722 nc = utf_ptr2char(ptr + mb_l);
1723 prev_c1 = u8cc[0];
1724 }
1725 else
1726 {
1727 pc = utfc_ptr2char(ptr + mb_l, pcc);
1728 nc = prev_c;
1729 pc1 = pcc[0];
1730 }
1731 prev_c = mb_c;
1732
1733 mb_c = arabic_shape(mb_c, &c, &u8cc[0], pc, pc1, nc);
1734 }
1735 else
1736 prev_c = mb_c;
1737#endif
1738 }
1739 else // enc_dbcs
1740 {
1741 mb_l = MB_BYTE2LEN(c);
1742 if (mb_l == 0) // at the NUL at end-of-line
1743 mb_l = 1;
1744 else if (mb_l > 1)
1745 {
1746 // We assume a second byte below 32 is illegal.
1747 // Hopefully this is OK for all double-byte encodings!
1748 if (ptr[1] >= 32)
1749 mb_c = (c << 8) + ptr[1];
1750 else
1751 {
1752 if (ptr[1] == NUL)
1753 {
1754 // head byte at end of line
1755 mb_l = 1;
1756 transchar_nonprint(extra, c);
1757 }
1758 else
1759 {
1760 // illegal tail byte
1761 mb_l = 2;
1762 STRCPY(extra, "XX");
1763 }
1764 p_extra = extra;
1765 n_extra = (int)STRLEN(extra) - 1;
1766 c_extra = NUL;
1767 c_final = NUL;
1768 c = *p_extra++;
1769 if (area_attr == 0 && search_attr == 0)
1770 {
1771 n_attr = n_extra + 1;
1772 extra_attr = HL_ATTR(HLF_8);
1773 saved_attr2 = char_attr; // save current attr
1774 }
1775 mb_c = c;
1776 }
1777 }
1778 }
1779 // If a double-width char doesn't fit display a '>' in the
1780 // last column; the character is displayed at the start of the
1781 // next line.
1782 if ((
1783# ifdef FEAT_RIGHTLEFT
1784 wp->w_p_rl ? (col <= 0) :
1785# endif
1786 (col >= wp->w_width - 1))
1787 && (*mb_char2cells)(mb_c) == 2)
1788 {
1789 c = '>';
1790 mb_c = c;
1791 mb_utf8 = FALSE;
1792 mb_l = 1;
1793 multi_attr = HL_ATTR(HLF_AT);
1794 // Put pointer back so that the character will be
1795 // displayed at the start of the next line.
1796 --ptr;
1797#ifdef FEAT_CONCEAL
1798 did_decrement_ptr = TRUE;
1799#endif
1800 }
1801 else if (*ptr != NUL)
1802 ptr += mb_l - 1;
1803
1804 // If a double-width char doesn't fit at the left side display
1805 // a '<' in the first column. Don't do this for unprintable
1806 // characters.
1807 if (n_skip > 0 && mb_l > 1 && n_extra == 0)
1808 {
1809 n_extra = 1;
1810 c_extra = MB_FILLER_CHAR;
1811 c_final = NUL;
1812 c = ' ';
1813 if (area_attr == 0 && search_attr == 0)
1814 {
1815 n_attr = n_extra + 1;
1816 extra_attr = HL_ATTR(HLF_AT);
1817 saved_attr2 = char_attr; // save current attr
1818 }
1819 mb_c = c;
1820 mb_utf8 = FALSE;
1821 mb_l = 1;
1822 }
1823
1824 }
1825 ++ptr;
1826
1827 if (extra_check)
1828 {
1829#ifdef FEAT_SPELL
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001830 // Check spelling (unless at the end of the line).
1831 // Only do this when there is no syntax highlighting, the
1832 // @Spell cluster is not used or the current syntax item
1833 // contains the @Spell cluster.
Bram Moolenaar7751d1d2019-10-18 20:37:08 +02001834 v = (long)(ptr - line);
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001835 if (has_spell && v >= word_end && v > cur_checked_col)
1836 {
1837 spell_attr = 0;
1838 if (c != 0 && (
1839# ifdef FEAT_SYN_HL
1840 !has_syntax ||
1841# endif
1842 can_spell))
1843 {
1844 char_u *prev_ptr, *p;
1845 int len;
1846 hlf_T spell_hlf = HLF_COUNT;
1847 if (has_mbyte)
1848 {
1849 prev_ptr = ptr - mb_l;
1850 v -= mb_l - 1;
1851 }
1852 else
1853 prev_ptr = ptr - 1;
1854
1855 // Use nextline[] if possible, it has the start of the
1856 // next line concatenated.
1857 if ((prev_ptr - line) - nextlinecol >= 0)
1858 p = nextline + (prev_ptr - line) - nextlinecol;
1859 else
1860 p = prev_ptr;
1861 cap_col -= (int)(prev_ptr - line);
1862 len = spell_check(wp, p, &spell_hlf, &cap_col,
1863 nochange);
1864 word_end = v + len;
1865
1866 // In Insert mode only highlight a word that
1867 // doesn't touch the cursor.
1868 if (spell_hlf != HLF_COUNT
1869 && (State & INSERT) != 0
1870 && wp->w_cursor.lnum == lnum
1871 && wp->w_cursor.col >=
1872 (colnr_T)(prev_ptr - line)
1873 && wp->w_cursor.col < (colnr_T)word_end)
1874 {
1875 spell_hlf = HLF_COUNT;
1876 spell_redraw_lnum = lnum;
1877 }
1878
1879 if (spell_hlf == HLF_COUNT && p != prev_ptr
1880 && (p - nextline) + len > nextline_idx)
1881 {
1882 // Remember that the good word continues at the
1883 // start of the next line.
1884 checked_lnum = lnum + 1;
Bram Moolenaar7751d1d2019-10-18 20:37:08 +02001885 checked_col = (int)((p - nextline)
1886 + len - nextline_idx);
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02001887 }
1888
1889 // Turn index into actual attributes.
1890 if (spell_hlf != HLF_COUNT)
1891 spell_attr = highlight_attr[spell_hlf];
1892
1893 if (cap_col > 0)
1894 {
1895 if (p != prev_ptr
1896 && (p - nextline) + cap_col >= nextline_idx)
1897 {
1898 // Remember that the word in the next line
1899 // must start with a capital.
1900 capcol_lnum = lnum + 1;
1901 cap_col = (int)((p - nextline) + cap_col
1902 - nextline_idx);
1903 }
1904 else
1905 // Compute the actual column.
1906 cap_col += (int)(prev_ptr - line);
1907 }
1908 }
1909 }
1910 if (spell_attr != 0)
1911 {
1912 if (!attr_pri)
1913 char_attr = hl_combine_attr(char_attr, spell_attr);
1914 else
1915 char_attr = hl_combine_attr(spell_attr, char_attr);
1916 }
1917#endif
1918#ifdef FEAT_LINEBREAK
1919 // Found last space before word: check for line break.
1920 if (wp->w_p_lbr && c0 == c
1921 && VIM_ISBREAK(c) && !VIM_ISBREAK((int)*ptr))
1922 {
1923 int mb_off = has_mbyte ? (*mb_head_off)(line, ptr - 1) : 0;
1924 char_u *p = ptr - (mb_off + 1);
1925
1926 // TODO: is passing p for start of the line OK?
1927 n_extra = win_lbr_chartabsize(wp, line, p, (colnr_T)vcol,
1928 NULL) - 1;
1929 if (c == TAB && n_extra + col > wp->w_width)
1930# ifdef FEAT_VARTABS
1931 n_extra = tabstop_padding(vcol, wp->w_buffer->b_p_ts,
1932 wp->w_buffer->b_p_vts_array) - 1;
1933# else
1934 n_extra = (int)wp->w_buffer->b_p_ts
1935 - vcol % (int)wp->w_buffer->b_p_ts - 1;
1936# endif
1937
1938 c_extra = mb_off > 0 ? MB_FILLER_CHAR : ' ';
1939 c_final = NUL;
1940 if (VIM_ISWHITE(c))
1941 {
1942#ifdef FEAT_CONCEAL
1943 if (c == TAB)
1944 // See "Tab alignment" below.
1945 FIX_FOR_BOGUSCOLS;
1946#endif
1947 if (!wp->w_p_list)
1948 c = ' ';
1949 }
1950 }
1951#endif
1952
1953 // 'list': Change char 160 to lcs_nbsp and space to lcs_space.
1954 // But not when the character is followed by a composing
1955 // character (use mb_l to check that).
1956 if (wp->w_p_list
1957 && ((((c == 160 && mb_l == 1)
1958 || (mb_utf8
1959 && ((mb_c == 160 && mb_l == 2)
1960 || (mb_c == 0x202f && mb_l == 3))))
1961 && lcs_nbsp)
1962 || (c == ' '
1963 && mb_l == 1
1964 && lcs_space
1965 && ptr - line <= trailcol)))
1966 {
1967 c = (c == ' ') ? lcs_space : lcs_nbsp;
1968 if (area_attr == 0 && search_attr == 0)
1969 {
1970 n_attr = 1;
1971 extra_attr = HL_ATTR(HLF_8);
1972 saved_attr2 = char_attr; // save current attr
1973 }
1974 mb_c = c;
1975 if (enc_utf8 && utf_char2len(c) > 1)
1976 {
1977 mb_utf8 = TRUE;
1978 u8cc[0] = 0;
1979 c = 0xc0;
1980 }
1981 else
1982 mb_utf8 = FALSE;
1983 }
1984
1985 if (trailcol != MAXCOL && ptr > line + trailcol && c == ' ')
1986 {
1987 c = lcs_trail;
1988 if (!attr_pri)
1989 {
1990 n_attr = 1;
1991 extra_attr = HL_ATTR(HLF_8);
1992 saved_attr2 = char_attr; // save current attr
1993 }
1994 mb_c = c;
1995 if (enc_utf8 && utf_char2len(c) > 1)
1996 {
1997 mb_utf8 = TRUE;
1998 u8cc[0] = 0;
1999 c = 0xc0;
2000 }
2001 else
2002 mb_utf8 = FALSE;
2003 }
2004 }
2005
2006 // Handling of non-printable characters.
2007 if (!vim_isprintc(c))
2008 {
2009 // when getting a character from the file, we may have to
2010 // turn it into something else on the way to putting it
2011 // into "ScreenLines".
2012 if (c == TAB && (!wp->w_p_list || lcs_tab1))
2013 {
2014 int tab_len = 0;
2015 long vcol_adjusted = vcol; // removed showbreak length
2016#ifdef FEAT_LINEBREAK
Bram Moolenaaree857022019-11-09 23:26:40 +01002017 char_u *sbr = get_showbreak_value(wp);
2018
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02002019 // only adjust the tab_len, when at the first column
2020 // after the showbreak value was drawn
Bram Moolenaaree857022019-11-09 23:26:40 +01002021 if (*sbr != NUL && vcol == vcol_sbr && wp->w_p_wrap)
2022 vcol_adjusted = vcol - MB_CHARLEN(sbr);
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02002023#endif
2024 // tab amount depends on current column
2025#ifdef FEAT_VARTABS
2026 tab_len = tabstop_padding(vcol_adjusted,
2027 wp->w_buffer->b_p_ts,
2028 wp->w_buffer->b_p_vts_array) - 1;
2029#else
2030 tab_len = (int)wp->w_buffer->b_p_ts
2031 - vcol_adjusted % (int)wp->w_buffer->b_p_ts - 1;
2032#endif
2033
2034#ifdef FEAT_LINEBREAK
2035 if (!wp->w_p_lbr || !wp->w_p_list)
2036#endif
2037 // tab amount depends on current column
2038 n_extra = tab_len;
2039#ifdef FEAT_LINEBREAK
2040 else
2041 {
2042 char_u *p;
2043 int len;
2044 int i;
2045 int saved_nextra = n_extra;
2046
2047#ifdef FEAT_CONCEAL
2048 if (vcol_off > 0)
2049 // there are characters to conceal
2050 tab_len += vcol_off;
2051 // boguscols before FIX_FOR_BOGUSCOLS macro from above
2052 if (wp->w_p_list && lcs_tab1 && old_boguscols > 0
2053 && n_extra > tab_len)
2054 tab_len += n_extra - tab_len;
2055#endif
2056
2057 // if n_extra > 0, it gives the number of chars, to
2058 // use for a tab, else we need to calculate the width
2059 // for a tab
2060 len = (tab_len * mb_char2len(lcs_tab2));
2061 if (n_extra > 0)
2062 len += n_extra - tab_len;
2063 c = lcs_tab1;
2064 p = alloc(len + 1);
2065 vim_memset(p, ' ', len);
2066 p[len] = NUL;
2067 vim_free(p_extra_free);
2068 p_extra_free = p;
2069 for (i = 0; i < tab_len; i++)
2070 {
2071 int lcs = lcs_tab2;
2072
2073 if (*p == NUL)
2074 {
2075 tab_len = i;
2076 break;
2077 }
2078
2079 // if lcs_tab3 is given, need to change the char
2080 // for tab
2081 if (lcs_tab3 && i == tab_len - 1)
2082 lcs = lcs_tab3;
2083 mb_char2bytes(lcs, p);
2084 p += mb_char2len(lcs);
2085 n_extra += mb_char2len(lcs)
2086 - (saved_nextra > 0 ? 1 : 0);
2087 }
2088 p_extra = p_extra_free;
2089#ifdef FEAT_CONCEAL
2090 // n_extra will be increased by FIX_FOX_BOGUSCOLS
2091 // macro below, so need to adjust for that here
2092 if (vcol_off > 0)
2093 n_extra -= vcol_off;
2094#endif
2095 }
2096#endif
2097#ifdef FEAT_CONCEAL
2098 {
2099 int vc_saved = vcol_off;
2100
2101 // Tab alignment should be identical regardless of
2102 // 'conceallevel' value. So tab compensates of all
2103 // previous concealed characters, and thus resets
2104 // vcol_off and boguscols accumulated so far in the
2105 // line. Note that the tab can be longer than
2106 // 'tabstop' when there are concealed characters.
2107 FIX_FOR_BOGUSCOLS;
2108
2109 // Make sure, the highlighting for the tab char will be
2110 // correctly set further below (effectively reverts the
2111 // FIX_FOR_BOGSUCOLS macro
2112 if (n_extra == tab_len + vc_saved && wp->w_p_list
2113 && lcs_tab1)
2114 tab_len += vc_saved;
2115 }
2116#endif
2117 mb_utf8 = FALSE; // don't draw as UTF-8
2118 if (wp->w_p_list)
2119 {
2120 c = (n_extra == 0 && lcs_tab3) ? lcs_tab3 : lcs_tab1;
2121#ifdef FEAT_LINEBREAK
2122 if (wp->w_p_lbr)
2123 c_extra = NUL; // using p_extra from above
2124 else
2125#endif
2126 c_extra = lcs_tab2;
2127 c_final = lcs_tab3;
2128 n_attr = tab_len + 1;
2129 extra_attr = HL_ATTR(HLF_8);
2130 saved_attr2 = char_attr; // save current attr
2131 mb_c = c;
2132 if (enc_utf8 && utf_char2len(c) > 1)
2133 {
2134 mb_utf8 = TRUE;
2135 u8cc[0] = 0;
2136 c = 0xc0;
2137 }
2138 }
2139 else
2140 {
2141 c_final = NUL;
2142 c_extra = ' ';
2143 c = ' ';
2144 }
2145 }
2146 else if (c == NUL
2147 && (wp->w_p_list
2148 || ((fromcol >= 0 || fromcol_prev >= 0)
2149 && tocol > vcol
2150 && VIsual_mode != Ctrl_V
2151 && (
2152# ifdef FEAT_RIGHTLEFT
2153 wp->w_p_rl ? (col >= 0) :
2154# endif
2155 (col < wp->w_width))
2156 && !(noinvcur
2157 && lnum == wp->w_cursor.lnum
2158 && (colnr_T)vcol == wp->w_virtcol)))
2159 && lcs_eol_one > 0)
2160 {
2161 // Display a '$' after the line or highlight an extra
2162 // character if the line break is included.
2163#if defined(FEAT_DIFF) || defined(LINE_ATTR)
2164 // For a diff line the highlighting continues after the
2165 // "$".
2166 if (
2167# ifdef FEAT_DIFF
2168 diff_hlf == (hlf_T)0
2169# ifdef LINE_ATTR
2170 &&
2171# endif
2172# endif
2173# ifdef LINE_ATTR
2174 line_attr == 0
2175# endif
2176 )
2177#endif
2178 {
2179 // In virtualedit, visual selections may extend
2180 // beyond end of line.
2181 if (area_highlighting && virtual_active()
2182 && tocol != MAXCOL && vcol < tocol)
2183 n_extra = 0;
2184 else
2185 {
2186 p_extra = at_end_str;
2187 n_extra = 1;
2188 c_extra = NUL;
2189 c_final = NUL;
2190 }
2191 }
2192 if (wp->w_p_list && lcs_eol > 0)
2193 c = lcs_eol;
2194 else
2195 c = ' ';
2196 lcs_eol_one = -1;
2197 --ptr; // put it back at the NUL
2198 if (!attr_pri)
2199 {
2200 extra_attr = HL_ATTR(HLF_AT);
2201 n_attr = 1;
2202 }
2203 mb_c = c;
2204 if (enc_utf8 && utf_char2len(c) > 1)
2205 {
2206 mb_utf8 = TRUE;
2207 u8cc[0] = 0;
2208 c = 0xc0;
2209 }
2210 else
2211 mb_utf8 = FALSE; // don't draw as UTF-8
2212 }
2213 else if (c != NUL)
2214 {
2215 p_extra = transchar(c);
2216 if (n_extra == 0)
2217 n_extra = byte2cells(c) - 1;
2218#ifdef FEAT_RIGHTLEFT
2219 if ((dy_flags & DY_UHEX) && wp->w_p_rl)
2220 rl_mirror(p_extra); // reverse "<12>"
2221#endif
2222 c_extra = NUL;
2223 c_final = NUL;
2224#ifdef FEAT_LINEBREAK
2225 if (wp->w_p_lbr)
2226 {
2227 char_u *p;
2228
2229 c = *p_extra;
2230 p = alloc(n_extra + 1);
2231 vim_memset(p, ' ', n_extra);
2232 STRNCPY(p, p_extra + 1, STRLEN(p_extra) - 1);
2233 p[n_extra] = NUL;
2234 vim_free(p_extra_free);
2235 p_extra_free = p_extra = p;
2236 }
2237 else
2238#endif
2239 {
2240 n_extra = byte2cells(c) - 1;
2241 c = *p_extra++;
2242 }
2243 if (!attr_pri)
2244 {
2245 n_attr = n_extra + 1;
2246 extra_attr = HL_ATTR(HLF_8);
2247 saved_attr2 = char_attr; // save current attr
2248 }
2249 mb_utf8 = FALSE; // don't draw as UTF-8
2250 }
2251 else if (VIsual_active
2252 && (VIsual_mode == Ctrl_V
2253 || VIsual_mode == 'v')
2254 && virtual_active()
2255 && tocol != MAXCOL
2256 && vcol < tocol
2257 && (
2258#ifdef FEAT_RIGHTLEFT
2259 wp->w_p_rl ? (col >= 0) :
2260#endif
2261 (col < wp->w_width)))
2262 {
2263 c = ' ';
2264 --ptr; // put it back at the NUL
2265 }
2266#if defined(LINE_ATTR)
2267 else if ((
2268# ifdef FEAT_DIFF
2269 diff_hlf != (hlf_T)0 ||
2270# endif
2271# ifdef FEAT_TERMINAL
2272 win_attr != 0 ||
2273# endif
2274 line_attr != 0
2275 ) && (
2276# ifdef FEAT_RIGHTLEFT
2277 wp->w_p_rl ? (col >= 0) :
2278# endif
2279 (col
2280# ifdef FEAT_CONCEAL
2281 - boguscols
2282# endif
2283 < wp->w_width)))
2284 {
2285 // Highlight until the right side of the window
2286 c = ' ';
2287 --ptr; // put it back at the NUL
2288
2289 // Remember we do the char for line highlighting.
2290 ++did_line_attr;
2291
2292 // don't do search HL for the rest of the line
2293 if (line_attr != 0 && char_attr == search_attr
2294 && (did_line_attr > 1
2295 || (wp->w_p_list && lcs_eol > 0)))
2296 char_attr = line_attr;
2297# ifdef FEAT_DIFF
2298 if (diff_hlf == HLF_TXD)
2299 {
2300 diff_hlf = HLF_CHD;
2301 if (vi_attr == 0 || char_attr != vi_attr)
2302 {
2303 char_attr = HL_ATTR(diff_hlf);
2304 if (wp->w_p_cul && lnum == wp->w_cursor.lnum
2305 && wp->w_p_culopt_flags != CULOPT_NBR
2306 && (!cul_screenline
2307 || (vcol >= left_curline_col
2308 && vcol <= right_curline_col)))
2309 char_attr = hl_combine_attr(
2310 char_attr, HL_ATTR(HLF_CUL));
2311 }
2312 }
2313# endif
2314# ifdef FEAT_TERMINAL
2315 if (win_attr != 0)
2316 {
2317 char_attr = win_attr;
Bram Moolenaara3817732019-10-16 16:31:44 +02002318 if (wp->w_p_cul && lnum == wp->w_cursor.lnum
2319 && wp->w_p_culopt_flags != CULOPT_NBR)
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02002320 {
2321 if (!cul_screenline || (vcol >= left_curline_col
2322 && vcol <= right_curline_col))
2323 char_attr = hl_combine_attr(
2324 char_attr, HL_ATTR(HLF_CUL));
2325 }
2326 else if (line_attr)
2327 char_attr = hl_combine_attr(char_attr, line_attr);
2328 }
2329# endif
2330 }
2331#endif
2332 }
2333
2334#ifdef FEAT_CONCEAL
2335 if ( wp->w_p_cole > 0
2336 && (wp != curwin || lnum != wp->w_cursor.lnum ||
2337 conceal_cursor_line(wp))
2338 && ((syntax_flags & HL_CONCEAL) != 0 || has_match_conc > 0)
2339 && !(lnum_in_visual_area
2340 && vim_strchr(wp->w_p_cocu, 'v') == NULL))
2341 {
2342 char_attr = conceal_attr;
2343 if ((prev_syntax_id != syntax_seqnr || has_match_conc > 1)
2344 && (syn_get_sub_char() != NUL || match_conc
2345 || wp->w_p_cole == 1)
2346 && wp->w_p_cole != 3)
2347 {
2348 // First time at this concealed item: display one
2349 // character.
2350 if (match_conc)
2351 c = match_conc;
2352 else if (syn_get_sub_char() != NUL)
2353 c = syn_get_sub_char();
2354 else if (lcs_conceal != NUL)
2355 c = lcs_conceal;
2356 else
2357 c = ' ';
2358
2359 prev_syntax_id = syntax_seqnr;
2360
2361 if (n_extra > 0)
2362 vcol_off += n_extra;
2363 vcol += n_extra;
2364 if (wp->w_p_wrap && n_extra > 0)
2365 {
2366# ifdef FEAT_RIGHTLEFT
2367 if (wp->w_p_rl)
2368 {
2369 col -= n_extra;
2370 boguscols -= n_extra;
2371 }
2372 else
2373# endif
2374 {
2375 boguscols += n_extra;
2376 col += n_extra;
2377 }
2378 }
2379 n_extra = 0;
2380 n_attr = 0;
2381 }
2382 else if (n_skip == 0)
2383 {
2384 is_concealing = TRUE;
2385 n_skip = 1;
2386 }
2387 mb_c = c;
2388 if (enc_utf8 && utf_char2len(c) > 1)
2389 {
2390 mb_utf8 = TRUE;
2391 u8cc[0] = 0;
2392 c = 0xc0;
2393 }
2394 else
2395 mb_utf8 = FALSE; // don't draw as UTF-8
2396 }
2397 else
2398 {
2399 prev_syntax_id = 0;
2400 is_concealing = FALSE;
2401 }
2402
2403 if (n_skip > 0 && did_decrement_ptr)
2404 // not showing the '>', put pointer back to avoid getting stuck
2405 ++ptr;
2406
2407#endif // FEAT_CONCEAL
2408 }
2409
2410#ifdef FEAT_CONCEAL
2411 // In the cursor line and we may be concealing characters: correct
2412 // the cursor column when we reach its position.
2413 if (!did_wcol && draw_state == WL_LINE
2414 && wp == curwin && lnum == wp->w_cursor.lnum
2415 && conceal_cursor_line(wp)
2416 && (int)wp->w_virtcol <= vcol + n_skip)
2417 {
2418# ifdef FEAT_RIGHTLEFT
2419 if (wp->w_p_rl)
2420 wp->w_wcol = wp->w_width - col + boguscols - 1;
2421 else
2422# endif
2423 wp->w_wcol = col - boguscols;
2424 wp->w_wrow = row;
2425 did_wcol = TRUE;
2426 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL;
2427 }
2428#endif
2429
2430 // Don't override visual selection highlighting.
2431 if (n_attr > 0
2432 && draw_state == WL_LINE
2433 && !attr_pri)
2434 {
2435#ifdef LINE_ATTR
2436 if (line_attr)
2437 char_attr = hl_combine_attr(extra_attr, line_attr);
2438 else
2439#endif
2440 char_attr = extra_attr;
2441 }
2442
2443#if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
2444 // XIM don't send preedit_start and preedit_end, but they send
2445 // preedit_changed and commit. Thus Vim can't set "im_is_active", use
2446 // im_is_preediting() here.
2447 if (p_imst == IM_ON_THE_SPOT
2448 && xic != NULL
2449 && lnum == wp->w_cursor.lnum
2450 && (State & INSERT)
2451 && !p_imdisable
2452 && im_is_preediting()
2453 && draw_state == WL_LINE)
2454 {
2455 colnr_T tcol;
2456
2457 if (preedit_end_col == MAXCOL)
2458 getvcol(curwin, &(wp->w_cursor), &tcol, NULL, NULL);
2459 else
2460 tcol = preedit_end_col;
2461 if ((long)preedit_start_col <= vcol && vcol < (long)tcol)
2462 {
2463 if (feedback_old_attr < 0)
2464 {
2465 feedback_col = 0;
2466 feedback_old_attr = char_attr;
2467 }
2468 char_attr = im_get_feedback_attr(feedback_col);
2469 if (char_attr < 0)
2470 char_attr = feedback_old_attr;
2471 feedback_col++;
2472 }
2473 else if (feedback_old_attr >= 0)
2474 {
2475 char_attr = feedback_old_attr;
2476 feedback_old_attr = -1;
2477 feedback_col = 0;
2478 }
2479 }
2480#endif
2481 // Handle the case where we are in column 0 but not on the first
2482 // character of the line and the user wants us to show us a
2483 // special character (via 'listchars' option "precedes:<char>".
2484 if (lcs_prec_todo != NUL
2485 && wp->w_p_list
Bram Moolenaarbffba7f2019-09-20 17:00:17 +02002486 && (wp->w_p_wrap ?
2487 (wp->w_skipcol > 0 && row == 0) :
2488 wp->w_leftcol > 0)
Bram Moolenaar7528d1f2019-09-19 23:06:20 +02002489#ifdef FEAT_DIFF
2490 && filler_todo <= 0
2491#endif
2492 && draw_state > WL_NR
2493 && c != NUL)
2494 {
2495 c = lcs_prec;
2496 lcs_prec_todo = NUL;
2497 if (has_mbyte && (*mb_char2cells)(mb_c) > 1)
2498 {
2499 // Double-width character being overwritten by the "precedes"
2500 // character, need to fill up half the character.
2501 c_extra = MB_FILLER_CHAR;
2502 c_final = NUL;
2503 n_extra = 1;
2504 n_attr = 2;
2505 extra_attr = HL_ATTR(HLF_AT);
2506 }
2507 mb_c = c;
2508 if (enc_utf8 && utf_char2len(c) > 1)
2509 {
2510 mb_utf8 = TRUE;
2511 u8cc[0] = 0;
2512 c = 0xc0;
2513 }
2514 else
2515 mb_utf8 = FALSE; // don't draw as UTF-8
2516 if (!attr_pri)
2517 {
2518 saved_attr3 = char_attr; // save current attr
2519 char_attr = HL_ATTR(HLF_AT); // later copied to char_attr
2520 n_attr3 = 1;
2521 }
2522 }
2523
2524 // At end of the text line or just after the last character.
2525 if ((c == NUL
2526#if defined(LINE_ATTR)
2527 || did_line_attr == 1
2528#endif
2529 ) && eol_hl_off == 0)
2530 {
2531#ifdef FEAT_SEARCH_EXTRA
2532 // flag to indicate whether prevcol equals startcol of search_hl or
2533 // one of the matches
2534 int prevcol_hl_flag = get_prevcol_hl_flag(wp, &screen_search_hl,
2535 (long)(ptr - line) - (c == NUL));
2536#endif
2537 // Invert at least one char, used for Visual and empty line or
2538 // highlight match at end of line. If it's beyond the last
2539 // char on the screen, just overwrite that one (tricky!) Not
2540 // needed when a '$' was displayed for 'list'.
2541 if (lcs_eol == lcs_eol_one
2542 && ((area_attr != 0 && vcol == fromcol
2543 && (VIsual_mode != Ctrl_V
2544 || lnum == VIsual.lnum
2545 || lnum == curwin->w_cursor.lnum)
2546 && c == NUL)
2547#ifdef FEAT_SEARCH_EXTRA
2548 // highlight 'hlsearch' match at end of line
2549 || (prevcol_hl_flag
2550# ifdef FEAT_SYN_HL
2551 && !(wp->w_p_cul && lnum == wp->w_cursor.lnum
2552 && !(wp == curwin && VIsual_active))
2553# endif
2554# ifdef FEAT_DIFF
2555 && diff_hlf == (hlf_T)0
2556# endif
2557# if defined(LINE_ATTR)
2558 && did_line_attr <= 1
2559# endif
2560 )
2561#endif
2562 ))
2563 {
2564 int n = 0;
2565
2566#ifdef FEAT_RIGHTLEFT
2567 if (wp->w_p_rl)
2568 {
2569 if (col < 0)
2570 n = 1;
2571 }
2572 else
2573#endif
2574 {
2575 if (col >= wp->w_width)
2576 n = -1;
2577 }
2578 if (n != 0)
2579 {
2580 // At the window boundary, highlight the last character
2581 // instead (better than nothing).
2582 off += n;
2583 col += n;
2584 }
2585 else
2586 {
2587 // Add a blank character to highlight.
2588 ScreenLines[off] = ' ';
2589 if (enc_utf8)
2590 ScreenLinesUC[off] = 0;
2591 }
2592#ifdef FEAT_SEARCH_EXTRA
2593 if (area_attr == 0)
2594 {
2595 // Use attributes from match with highest priority among
2596 // 'search_hl' and the match list.
2597 get_search_match_hl(wp, &screen_search_hl,
2598 (long)(ptr - line), &char_attr);
2599 }
2600#endif
2601 ScreenAttrs[off] = char_attr;
2602#ifdef FEAT_RIGHTLEFT
2603 if (wp->w_p_rl)
2604 {
2605 --col;
2606 --off;
2607 }
2608 else
2609#endif
2610 {
2611 ++col;
2612 ++off;
2613 }
2614 ++vcol;
2615 eol_hl_off = 1;
2616 }
2617 }
2618
2619 // At end of the text line.
2620 if (c == NUL)
2621 {
2622#ifdef FEAT_SYN_HL
2623 // Highlight 'cursorcolumn' & 'colorcolumn' past end of the line.
2624 if (wp->w_p_wrap)
2625 v = wp->w_skipcol;
2626 else
2627 v = wp->w_leftcol;
2628
2629 // check if line ends before left margin
2630 if (vcol < v + col - win_col_off(wp))
2631 vcol = v + col - win_col_off(wp);
2632#ifdef FEAT_CONCEAL
2633 // Get rid of the boguscols now, we want to draw until the right
2634 // edge for 'cursorcolumn'.
2635 col -= boguscols;
2636 boguscols = 0;
2637#endif
2638
2639 if (draw_color_col)
2640 draw_color_col = advance_color_col(VCOL_HLC, &color_cols);
2641
2642 if (((wp->w_p_cuc
2643 && (int)wp->w_virtcol >= VCOL_HLC - eol_hl_off
2644 && (int)wp->w_virtcol <
2645 wp->w_width * (row - startrow + 1) + v
2646 && lnum != wp->w_cursor.lnum)
2647 || draw_color_col
2648 || win_attr != 0)
2649# ifdef FEAT_RIGHTLEFT
2650 && !wp->w_p_rl
2651# endif
2652 )
2653 {
2654 int rightmost_vcol = 0;
2655 int i;
2656
2657 if (wp->w_p_cuc)
2658 rightmost_vcol = wp->w_virtcol;
2659 if (draw_color_col)
2660 // determine rightmost colorcolumn to possibly draw
2661 for (i = 0; color_cols[i] >= 0; ++i)
2662 if (rightmost_vcol < color_cols[i])
2663 rightmost_vcol = color_cols[i];
2664
2665 while (col < wp->w_width)
2666 {
2667 ScreenLines[off] = ' ';
2668 if (enc_utf8)
2669 ScreenLinesUC[off] = 0;
2670 ++col;
2671 if (draw_color_col)
2672 draw_color_col = advance_color_col(VCOL_HLC,
2673 &color_cols);
2674
2675 if (wp->w_p_cuc && VCOL_HLC == (long)wp->w_virtcol)
2676 ScreenAttrs[off++] = HL_ATTR(HLF_CUC);
2677 else if (draw_color_col && VCOL_HLC == *color_cols)
2678 ScreenAttrs[off++] = HL_ATTR(HLF_MC);
2679 else
2680 ScreenAttrs[off++] = win_attr;
2681
2682 if (VCOL_HLC >= rightmost_vcol && win_attr == 0)
2683 break;
2684
2685 ++vcol;
2686 }
2687 }
2688#endif
2689
2690 screen_line(screen_row, wp->w_wincol, col,
2691 (int)wp->w_width, screen_line_flags);
2692 row++;
2693
2694 // Update w_cline_height and w_cline_folded if the cursor line was
2695 // updated (saves a call to plines() later).
2696 if (wp == curwin && lnum == curwin->w_cursor.lnum)
2697 {
2698 curwin->w_cline_row = startrow;
2699 curwin->w_cline_height = row - startrow;
2700#ifdef FEAT_FOLDING
2701 curwin->w_cline_folded = FALSE;
2702#endif
2703 curwin->w_valid |= (VALID_CHEIGHT|VALID_CROW);
2704 }
2705
2706 break;
2707 }
2708
2709 // Show "extends" character from 'listchars' if beyond the line end and
2710 // 'list' is set.
2711 if (lcs_ext != NUL
2712 && wp->w_p_list
2713 && !wp->w_p_wrap
2714#ifdef FEAT_DIFF
2715 && filler_todo <= 0
2716#endif
2717 && (
2718#ifdef FEAT_RIGHTLEFT
2719 wp->w_p_rl ? col == 0 :
2720#endif
2721 col == wp->w_width - 1)
2722 && (*ptr != NUL
2723 || (wp->w_p_list && lcs_eol_one > 0)
2724 || (n_extra && (c_extra != NUL || *p_extra != NUL))))
2725 {
2726 c = lcs_ext;
2727 char_attr = HL_ATTR(HLF_AT);
2728 mb_c = c;
2729 if (enc_utf8 && utf_char2len(c) > 1)
2730 {
2731 mb_utf8 = TRUE;
2732 u8cc[0] = 0;
2733 c = 0xc0;
2734 }
2735 else
2736 mb_utf8 = FALSE;
2737 }
2738
2739#ifdef FEAT_SYN_HL
2740 // advance to the next 'colorcolumn'
2741 if (draw_color_col)
2742 draw_color_col = advance_color_col(VCOL_HLC, &color_cols);
2743
2744 // Highlight the cursor column if 'cursorcolumn' is set. But don't
2745 // highlight the cursor position itself.
2746 // Also highlight the 'colorcolumn' if it is different than
2747 // 'cursorcolumn'
2748 vcol_save_attr = -1;
2749 if (draw_state == WL_LINE && !lnum_in_visual_area
2750 && search_attr == 0 && area_attr == 0)
2751 {
2752 if (wp->w_p_cuc && VCOL_HLC == (long)wp->w_virtcol
2753 && lnum != wp->w_cursor.lnum)
2754 {
2755 vcol_save_attr = char_attr;
2756 char_attr = hl_combine_attr(char_attr, HL_ATTR(HLF_CUC));
2757 }
2758 else if (draw_color_col && VCOL_HLC == *color_cols)
2759 {
2760 vcol_save_attr = char_attr;
2761 char_attr = hl_combine_attr(char_attr, HL_ATTR(HLF_MC));
2762 }
2763 }
2764#endif
2765
2766 // Store character to be displayed.
2767 // Skip characters that are left of the screen for 'nowrap'.
2768 vcol_prev = vcol;
2769 if (draw_state < WL_LINE || n_skip <= 0)
2770 {
2771 // Store the character.
2772#if defined(FEAT_RIGHTLEFT)
2773 if (has_mbyte && wp->w_p_rl && (*mb_char2cells)(mb_c) > 1)
2774 {
2775 // A double-wide character is: put first halve in left cell.
2776 --off;
2777 --col;
2778 }
2779#endif
2780 ScreenLines[off] = c;
2781 if (enc_dbcs == DBCS_JPNU)
2782 {
2783 if ((mb_c & 0xff00) == 0x8e00)
2784 ScreenLines[off] = 0x8e;
2785 ScreenLines2[off] = mb_c & 0xff;
2786 }
2787 else if (enc_utf8)
2788 {
2789 if (mb_utf8)
2790 {
2791 int i;
2792
2793 ScreenLinesUC[off] = mb_c;
2794 if ((c & 0xff) == 0)
2795 ScreenLines[off] = 0x80; // avoid storing zero
2796 for (i = 0; i < Screen_mco; ++i)
2797 {
2798 ScreenLinesC[i][off] = u8cc[i];
2799 if (u8cc[i] == 0)
2800 break;
2801 }
2802 }
2803 else
2804 ScreenLinesUC[off] = 0;
2805 }
2806 if (multi_attr)
2807 {
2808 ScreenAttrs[off] = multi_attr;
2809 multi_attr = 0;
2810 }
2811 else
2812 ScreenAttrs[off] = char_attr;
2813
2814 if (has_mbyte && (*mb_char2cells)(mb_c) > 1)
2815 {
2816 // Need to fill two screen columns.
2817 ++off;
2818 ++col;
2819 if (enc_utf8)
2820 // UTF-8: Put a 0 in the second screen char.
2821 ScreenLines[off] = 0;
2822 else
2823 // DBCS: Put second byte in the second screen char.
2824 ScreenLines[off] = mb_c & 0xff;
2825 if (draw_state > WL_NR
2826#ifdef FEAT_DIFF
2827 && filler_todo <= 0
2828#endif
2829 )
2830 ++vcol;
2831 // When "tocol" is halfway a character, set it to the end of
2832 // the character, otherwise highlighting won't stop.
2833 if (tocol == vcol)
2834 ++tocol;
2835#ifdef FEAT_RIGHTLEFT
2836 if (wp->w_p_rl)
2837 {
2838 // now it's time to backup one cell
2839 --off;
2840 --col;
2841 }
2842#endif
2843 }
2844#ifdef FEAT_RIGHTLEFT
2845 if (wp->w_p_rl)
2846 {
2847 --off;
2848 --col;
2849 }
2850 else
2851#endif
2852 {
2853 ++off;
2854 ++col;
2855 }
2856 }
2857#ifdef FEAT_CONCEAL
2858 else if (wp->w_p_cole > 0 && is_concealing)
2859 {
2860 --n_skip;
2861 ++vcol_off;
2862 if (n_extra > 0)
2863 vcol_off += n_extra;
2864 if (wp->w_p_wrap)
2865 {
2866 // Special voodoo required if 'wrap' is on.
2867 //
2868 // Advance the column indicator to force the line
2869 // drawing to wrap early. This will make the line
2870 // take up the same screen space when parts are concealed,
2871 // so that cursor line computations aren't messed up.
2872 //
2873 // To avoid the fictitious advance of 'col' causing
2874 // trailing junk to be written out of the screen line
2875 // we are building, 'boguscols' keeps track of the number
2876 // of bad columns we have advanced.
2877 if (n_extra > 0)
2878 {
2879 vcol += n_extra;
2880# ifdef FEAT_RIGHTLEFT
2881 if (wp->w_p_rl)
2882 {
2883 col -= n_extra;
2884 boguscols -= n_extra;
2885 }
2886 else
2887# endif
2888 {
2889 col += n_extra;
2890 boguscols += n_extra;
2891 }
2892 n_extra = 0;
2893 n_attr = 0;
2894 }
2895
2896
2897 if (has_mbyte && (*mb_char2cells)(mb_c) > 1)
2898 {
2899 // Need to fill two screen columns.
2900# ifdef FEAT_RIGHTLEFT
2901 if (wp->w_p_rl)
2902 {
2903 --boguscols;
2904 --col;
2905 }
2906 else
2907# endif
2908 {
2909 ++boguscols;
2910 ++col;
2911 }
2912 }
2913
2914# ifdef FEAT_RIGHTLEFT
2915 if (wp->w_p_rl)
2916 {
2917 --boguscols;
2918 --col;
2919 }
2920 else
2921# endif
2922 {
2923 ++boguscols;
2924 ++col;
2925 }
2926 }
2927 else
2928 {
2929 if (n_extra > 0)
2930 {
2931 vcol += n_extra;
2932 n_extra = 0;
2933 n_attr = 0;
2934 }
2935 }
2936
2937 }
2938#endif // FEAT_CONCEAL
2939 else
2940 --n_skip;
2941
2942 // Only advance the "vcol" when after the 'number' or 'relativenumber'
2943 // column.
2944 if (draw_state > WL_NR
2945#ifdef FEAT_DIFF
2946 && filler_todo <= 0
2947#endif
2948 )
2949 ++vcol;
2950
2951#ifdef FEAT_SYN_HL
2952 if (vcol_save_attr >= 0)
2953 char_attr = vcol_save_attr;
2954#endif
2955
2956 // restore attributes after "predeces" in 'listchars'
2957 if (draw_state > WL_NR && n_attr3 > 0 && --n_attr3 == 0)
2958 char_attr = saved_attr3;
2959
2960 // restore attributes after last 'listchars' or 'number' char
2961 if (n_attr > 0 && draw_state == WL_LINE && --n_attr == 0)
2962 char_attr = saved_attr2;
2963
2964 // At end of screen line and there is more to come: Display the line
2965 // so far. If there is no more to display it is caught above.
2966 if ((
2967#ifdef FEAT_RIGHTLEFT
2968 wp->w_p_rl ? (col < 0) :
2969#endif
2970 (col >= wp->w_width))
2971 && (*ptr != NUL
2972#ifdef FEAT_DIFF
2973 || filler_todo > 0
2974#endif
2975 || (wp->w_p_list && lcs_eol != NUL && p_extra != at_end_str)
2976 || (n_extra != 0 && (c_extra != NUL || *p_extra != NUL)))
2977 )
2978 {
2979#ifdef FEAT_CONCEAL
2980 screen_line(screen_row, wp->w_wincol, col - boguscols,
2981 (int)wp->w_width, screen_line_flags);
2982 boguscols = 0;
2983#else
2984 screen_line(screen_row, wp->w_wincol, col,
2985 (int)wp->w_width, screen_line_flags);
2986#endif
2987 ++row;
2988 ++screen_row;
2989
2990 // When not wrapping and finished diff lines, or when displayed
2991 // '$' and highlighting until last column, break here.
2992 if ((!wp->w_p_wrap
2993#ifdef FEAT_DIFF
2994 && filler_todo <= 0
2995#endif
2996 ) || lcs_eol_one == -1)
2997 break;
2998
2999 // When the window is too narrow draw all "@" lines.
3000 if (draw_state != WL_LINE
3001#ifdef FEAT_DIFF
3002 && filler_todo <= 0
3003#endif
3004 )
3005 {
3006 win_draw_end(wp, '@', ' ', TRUE, row, wp->w_height, HLF_AT);
3007 draw_vsep_win(wp, row);
3008 row = endrow;
3009 }
3010
3011 // When line got too long for screen break here.
3012 if (row == endrow)
3013 {
3014 ++row;
3015 break;
3016 }
3017
3018 if (screen_cur_row == screen_row - 1
3019#ifdef FEAT_DIFF
3020 && filler_todo <= 0
3021#endif
3022 && wp->w_width == Columns)
3023 {
3024 // Remember that the line wraps, used for modeless copy.
3025 LineWraps[screen_row - 1] = TRUE;
3026
3027 // Special trick to make copy/paste of wrapped lines work with
3028 // xterm/screen: write an extra character beyond the end of
3029 // the line. This will work with all terminal types
3030 // (regardless of the xn,am settings).
3031 // Only do this on a fast tty.
3032 // Only do this if the cursor is on the current line
3033 // (something has been written in it).
3034 // Don't do this for the GUI.
3035 // Don't do this for double-width characters.
3036 // Don't do this for a window not at the right screen border.
3037 if (p_tf
3038#ifdef FEAT_GUI
3039 && !gui.in_use
3040#endif
3041 && !(has_mbyte
3042 && ((*mb_off2cells)(LineOffset[screen_row],
3043 LineOffset[screen_row] + screen_Columns)
3044 == 2
3045 || (*mb_off2cells)(LineOffset[screen_row - 1]
3046 + (int)Columns - 2,
3047 LineOffset[screen_row] + screen_Columns)
3048 == 2)))
3049 {
3050 // First make sure we are at the end of the screen line,
3051 // then output the same character again to let the
3052 // terminal know about the wrap. If the terminal doesn't
3053 // auto-wrap, we overwrite the character.
3054 if (screen_cur_col != wp->w_width)
3055 screen_char(LineOffset[screen_row - 1]
3056 + (unsigned)Columns - 1,
3057 screen_row - 1, (int)(Columns - 1));
3058
3059 // When there is a multi-byte character, just output a
3060 // space to keep it simple.
3061 if (has_mbyte && MB_BYTE2LEN(ScreenLines[LineOffset[
3062 screen_row - 1] + (Columns - 1)]) > 1)
3063 out_char(' ');
3064 else
3065 out_char(ScreenLines[LineOffset[screen_row - 1]
3066 + (Columns - 1)]);
3067 // force a redraw of the first char on the next line
3068 ScreenAttrs[LineOffset[screen_row]] = (sattr_T)-1;
3069 screen_start(); // don't know where cursor is now
3070 }
3071 }
3072
3073 col = 0;
3074 off = (unsigned)(current_ScreenLine - ScreenLines);
3075#ifdef FEAT_RIGHTLEFT
3076 if (wp->w_p_rl)
3077 {
3078 col = wp->w_width - 1; // col is not used if breaking!
3079 off += col;
3080 }
3081#endif
3082
3083 // reset the drawing state for the start of a wrapped line
3084 draw_state = WL_START;
3085 saved_n_extra = n_extra;
3086 saved_p_extra = p_extra;
3087 saved_c_extra = c_extra;
3088 saved_c_final = c_final;
3089#ifdef FEAT_SYN_HL
3090 if (!(cul_screenline
3091# ifdef FEAT_DIFF
3092 && diff_hlf == (hlf_T)0)
3093# endif
3094 )
3095 saved_char_attr = char_attr;
3096 else
3097#endif
3098 saved_char_attr = 0;
3099 n_extra = 0;
3100 lcs_prec_todo = lcs_prec;
3101#ifdef FEAT_LINEBREAK
3102# ifdef FEAT_DIFF
3103 if (filler_todo <= 0)
3104# endif
3105 need_showbreak = TRUE;
3106#endif
3107#ifdef FEAT_DIFF
3108 --filler_todo;
3109 // When the filler lines are actually below the last line of the
3110 // file, don't draw the line itself, break here.
3111 if (filler_todo == 0 && wp->w_botfill)
3112 break;
3113#endif
3114 }
3115
3116 } // for every character in the line
3117
3118#ifdef FEAT_SPELL
3119 // After an empty line check first word for capital.
3120 if (*skipwhite(line) == NUL)
3121 {
3122 capcol_lnum = lnum + 1;
3123 cap_col = 0;
3124 }
3125#endif
3126#ifdef FEAT_TEXT_PROP
3127 vim_free(text_props);
3128 vim_free(text_prop_idxs);
3129#endif
3130
3131 vim_free(p_extra_free);
3132 return row;
3133}