st-ligatures-boxdraw-20230105-0.9.diff (18273B)
1 diff --git a/Makefile b/Makefile 2 index 6dfa212..adfa07a 100644 3 --- a/Makefile 4 +++ b/Makefile 5 @@ -4,7 +4,7 @@ 6 7 include config.mk 8 9 -SRC = st.c x.c boxdraw.c 10 +SRC = st.c x.c boxdraw.c hb.c 11 OBJ = $(SRC:.c=.o) 12 13 all: options st 14 @@ -22,8 +22,9 @@ config.h: 15 $(CC) $(STCFLAGS) -c $< 16 17 st.o: config.h st.h win.h 18 -x.o: arg.h config.h st.h win.h 19 +x.o: arg.h config.h st.h win.h hb.h 20 boxdraw.o: config.h st.h boxdraw_data.h 21 +hb.o: st.h 22 23 $(OBJ): config.h config.mk 24 25 diff --git a/config.mk b/config.mk 26 index 1e306f8..3e13e53 100644 27 --- a/config.mk 28 +++ b/config.mk 29 @@ -15,10 +15,12 @@ PKG_CONFIG = pkg-config 30 # includes and libs 31 INCS = -I$(X11INC) \ 32 `$(PKG_CONFIG) --cflags fontconfig` \ 33 - `$(PKG_CONFIG) --cflags freetype2` 34 + `$(PKG_CONFIG) --cflags freetype2` \ 35 + `$(PKG_CONFIG) --cflags harfbuzz` 36 LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \ 37 `$(PKG_CONFIG) --libs fontconfig` \ 38 - `$(PKG_CONFIG) --libs freetype2` 39 + `$(PKG_CONFIG) --libs freetype2` \ 40 + `$(PKG_CONFIG) --libs harfbuzz` 41 42 # flags 43 STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 44 diff --git a/hb.c b/hb.c 45 new file mode 100644 46 index 0000000..528c040 47 --- /dev/null 48 +++ b/hb.c 49 @@ -0,0 +1,124 @@ 50 +#include <stdlib.h> 51 +#include <stdio.h> 52 +#include <math.h> 53 +#include <X11/Xft/Xft.h> 54 +#include <X11/cursorfont.h> 55 +#include <hb.h> 56 +#include <hb-ft.h> 57 + 58 +#include "st.h" 59 +#include "hb.h" 60 + 61 +#define FEATURE(c1,c2,c3,c4) { .tag = HB_TAG(c1,c2,c3,c4), .value = 1, .start = HB_FEATURE_GLOBAL_START, .end = HB_FEATURE_GLOBAL_END } 62 +#define BUFFER_STEP 256 63 + 64 +hb_font_t *hbfindfont(XftFont *match); 65 + 66 +typedef struct { 67 + XftFont *match; 68 + hb_font_t *font; 69 +} HbFontMatch; 70 + 71 +typedef struct { 72 + size_t capacity; 73 + HbFontMatch *fonts; 74 +} HbFontCache; 75 + 76 +static HbFontCache hbfontcache = { 0, NULL }; 77 + 78 +typedef struct { 79 + size_t capacity; 80 + Rune *runes; 81 +} RuneBuffer; 82 + 83 +static RuneBuffer hbrunebuffer = { 0, NULL }; 84 + 85 +/* 86 + * Poplulate the array with a list of font features, wrapped in FEATURE macro, 87 + * e. g. 88 + * FEATURE('c', 'a', 'l', 't'), FEATURE('d', 'l', 'i', 'g') 89 + */ 90 +hb_feature_t features[] = { }; 91 + 92 +void 93 +hbunloadfonts() 94 +{ 95 + for (int i = 0; i < hbfontcache.capacity; i++) { 96 + hb_font_destroy(hbfontcache.fonts[i].font); 97 + XftUnlockFace(hbfontcache.fonts[i].match); 98 + } 99 + 100 + if (hbfontcache.fonts != NULL) { 101 + free(hbfontcache.fonts); 102 + hbfontcache.fonts = NULL; 103 + } 104 + hbfontcache.capacity = 0; 105 +} 106 + 107 +hb_font_t * 108 +hbfindfont(XftFont *match) 109 +{ 110 + for (int i = 0; i < hbfontcache.capacity; i++) { 111 + if (hbfontcache.fonts[i].match == match) 112 + return hbfontcache.fonts[i].font; 113 + } 114 + 115 + /* Font not found in cache, caching it now. */ 116 + hbfontcache.fonts = realloc(hbfontcache.fonts, sizeof(HbFontMatch) * (hbfontcache.capacity + 1)); 117 + FT_Face face = XftLockFace(match); 118 + hb_font_t *font = hb_ft_font_create(face, NULL); 119 + if (font == NULL) 120 + die("Failed to load Harfbuzz font."); 121 + 122 + hbfontcache.fonts[hbfontcache.capacity].match = match; 123 + hbfontcache.fonts[hbfontcache.capacity].font = font; 124 + hbfontcache.capacity += 1; 125 + 126 + return font; 127 +} 128 + 129 +void hbtransform(HbTransformData *data, XftFont *xfont, const Glyph *glyphs, int start, int length) { 130 + ushort mode = USHRT_MAX; 131 + unsigned int glyph_count; 132 + int rune_idx, glyph_idx, end = start + length; 133 + 134 + hb_font_t *font = hbfindfont(xfont); 135 + if (font == NULL) 136 + return; 137 + 138 + hb_buffer_t *buffer = hb_buffer_create(); 139 + hb_buffer_set_direction(buffer, HB_DIRECTION_LTR); 140 + 141 + /* Resize the buffer if required length is larger. */ 142 + if (hbrunebuffer.capacity < length) { 143 + hbrunebuffer.capacity = (length / BUFFER_STEP + 1) * BUFFER_STEP; 144 + hbrunebuffer.runes = realloc(hbrunebuffer.runes, hbrunebuffer.capacity * sizeof(Rune)); 145 + } 146 + 147 + /* Fill buffer with codepoints. */ 148 + for (rune_idx = 0, glyph_idx = start; glyph_idx < end; glyph_idx++, rune_idx++) { 149 + hbrunebuffer.runes[rune_idx] = glyphs[glyph_idx].u; 150 + mode = glyphs[glyph_idx].mode; 151 + if (mode & ATTR_WDUMMY) 152 + hbrunebuffer.runes[rune_idx] = 0x0020; 153 + } 154 + hb_buffer_add_codepoints(buffer, hbrunebuffer.runes, length, 0, length); 155 + 156 + /* Shape the segment. */ 157 + hb_shape(font, buffer, features, sizeof(features)/sizeof(hb_feature_t)); 158 + 159 + /* Get new glyph info. */ 160 + hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, &glyph_count); 161 + hb_glyph_position_t *pos = hb_buffer_get_glyph_positions(buffer, &glyph_count); 162 + 163 + /* Fill the output. */ 164 + data->buffer = buffer; 165 + data->glyphs = info; 166 + data->positions = pos; 167 + data->count = glyph_count; 168 +} 169 + 170 +void hbcleanup(HbTransformData *data) { 171 + hb_buffer_destroy(data->buffer); 172 + memset(data, 0, sizeof(HbTransformData)); 173 +} 174 diff --git a/hb.h b/hb.h 175 new file mode 100644 176 index 0000000..88de9bd 177 --- /dev/null 178 +++ b/hb.h 179 @@ -0,0 +1,14 @@ 180 +#include <X11/Xft/Xft.h> 181 +#include <hb.h> 182 +#include <hb-ft.h> 183 + 184 +typedef struct { 185 + hb_buffer_t *buffer; 186 + hb_glyph_info_t *glyphs; 187 + hb_glyph_position_t *positions; 188 + unsigned int count; 189 +} HbTransformData; 190 + 191 +void hbunloadfonts(); 192 +void hbtransform(HbTransformData *, XftFont *, const Glyph *, int, int); 193 +void hbcleanup(HbTransformData *); 194 diff --git a/st.c b/st.c 195 index 41d5ace..1c2edd6 100644 196 --- a/st.c 197 +++ b/st.c 198 @@ -2643,7 +2643,8 @@ draw(void) 199 200 drawregion(0, 0, term.col, term.row); 201 xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], 202 - term.ocx, term.ocy, term.line[term.ocy][term.ocx]); 203 + term.ocx, term.ocy, term.line[term.ocy][term.ocx], 204 + term.line[term.ocy], term.col); 205 term.ocx = cx; 206 term.ocy = term.c.y; 207 xfinishdraw(); 208 diff --git a/st.h b/st.h 209 index 808f5f7..ae41368 100644 210 --- a/st.h 211 +++ b/st.h 212 @@ -11,7 +11,8 @@ 213 #define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d)) 214 #define DEFAULT(a, b) (a) = (a) ? (a) : (b) 215 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x) 216 -#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \ 217 +#define ATTRCMP(a, b) (((a).mode & (~ATTR_WRAP)) != ((b).mode & (~ATTR_WRAP)) || \ 218 + (a).fg != (b).fg || \ 219 (a).bg != (b).bg) 220 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \ 221 (t1.tv_nsec-t2.tv_nsec)/1E6) 222 diff --git a/win.h b/win.h 223 index 6de960d..94679e4 100644 224 --- a/win.h 225 +++ b/win.h 226 @@ -25,7 +25,7 @@ enum win_mode { 227 228 void xbell(void); 229 void xclipcopy(void); 230 -void xdrawcursor(int, int, Glyph, int, int, Glyph); 231 +void xdrawcursor(int, int, Glyph, int, int, Glyph, Line, int); 232 void xdrawline(Line, int, int, int); 233 void xfinishdraw(void); 234 void xloadcols(void); 235 diff --git a/x.c b/x.c 236 index bf6bbf9..929a59a 100644 237 --- a/x.c 238 +++ b/x.c 239 @@ -19,6 +19,7 @@ char *argv0; 240 #include "arg.h" 241 #include "st.h" 242 #include "win.h" 243 +#include "hb.h" 244 245 /* types used in config.h */ 246 typedef struct { 247 @@ -141,6 +142,7 @@ typedef struct { 248 } DC; 249 250 static inline ushort sixd_to_16bit(int); 251 +static void xresetfontsettings(ushort mode, Font **font, int *frcflags); 252 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int); 253 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int); 254 static void xdrawglyph(Glyph, int, int); 255 @@ -757,7 +759,7 @@ xresize(int col, int row) 256 xclear(0, 0, win.w, win.h); 257 258 /* resize to new width */ 259 - xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec)); 260 + xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec) * 4); 261 } 262 263 ushort 264 @@ -1062,6 +1064,9 @@ xunloadfont(Font *f) 265 void 266 xunloadfonts(void) 267 { 268 + /* Clear Harfbuzz font cache. */ 269 + hbunloadfonts(); 270 + 271 /* Free the loaded fonts in the font cache. */ 272 while (frclen > 0) 273 XftFontClose(xw.dpy, frc[--frclen].font); 274 @@ -1185,7 +1190,7 @@ xinit(int cols, int rows) 275 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h); 276 277 /* font spec buffer */ 278 - xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec)); 279 + xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec) * 4); 280 281 /* Xft rendering context */ 282 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap); 283 @@ -1241,6 +1246,22 @@ xinit(int cols, int rows) 284 boxdraw_xinit(xw.dpy, xw.cmap, xw.draw, xw.vis); 285 } 286 287 +void 288 +xresetfontsettings(ushort mode, Font **font, int *frcflags) 289 +{ 290 + *font = &dc.font; 291 + if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) { 292 + *font = &dc.ibfont; 293 + *frcflags = FRC_ITALICBOLD; 294 + } else if (mode & ATTR_ITALIC) { 295 + *font = &dc.ifont; 296 + *frcflags = FRC_ITALIC; 297 + } else if (mode & ATTR_BOLD) { 298 + *font = &dc.bfont; 299 + *frcflags = FRC_BOLD; 300 + } 301 +} 302 + 303 int 304 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y) 305 { 306 @@ -1255,126 +1276,158 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x 307 FcPattern *fcpattern, *fontpattern; 308 FcFontSet *fcsets[] = { NULL }; 309 FcCharSet *fccharset; 310 - int i, f, numspecs = 0; 311 + int i, f, length = 0, start = 0, numspecs = 0; 312 + float cluster_xp = xp, cluster_yp = yp; 313 + HbTransformData shaped = { 0 }; 314 + 315 + /* Initial values. */ 316 + mode = prevmode = glyphs[0].mode & ~ATTR_WRAP; 317 + xresetfontsettings(mode, &font, &frcflags); 318 319 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) { 320 - /* Fetch rune and mode for current glyph. */ 321 - rune = glyphs[i].u; 322 - mode = glyphs[i].mode; 323 + mode = glyphs[i].mode & ~ATTR_WRAP; 324 325 /* Skip dummy wide-character spacing. */ 326 - if (mode == ATTR_WDUMMY) 327 + if (mode & ATTR_WDUMMY && i < (len - 1)) 328 continue; 329 330 - /* Determine font for glyph if different from previous glyph. */ 331 - if (prevmode != mode) { 332 - prevmode = mode; 333 - font = &dc.font; 334 - frcflags = FRC_NORMAL; 335 - runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f); 336 - if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) { 337 - font = &dc.ibfont; 338 - frcflags = FRC_ITALICBOLD; 339 - } else if (mode & ATTR_ITALIC) { 340 - font = &dc.ifont; 341 - frcflags = FRC_ITALIC; 342 - } else if (mode & ATTR_BOLD) { 343 - font = &dc.bfont; 344 - frcflags = FRC_BOLD; 345 + if ( 346 + prevmode != mode 347 + || ATTRCMP(glyphs[start], glyphs[i]) 348 + || selected(x + i, y) != selected(x + start, y) 349 + || i == (len - 1) 350 + ) { 351 + /* Handle 1-character wide segments and end of line */ 352 + length = i - start; 353 + if (i == start) { 354 + length = 1; 355 + } else if (i == (len - 1)) { 356 + length = (i - start + 1); 357 } 358 - yp = winy + font->ascent; 359 - } 360 361 - if (mode & ATTR_BOXDRAW) { 362 - /* minor shoehorning: boxdraw uses only this ushort */ 363 - glyphidx = boxdrawindex(&glyphs[i]); 364 - } else { 365 - /* Lookup character index with default font. */ 366 - glyphidx = XftCharIndex(xw.dpy, font->match, rune); 367 - } 368 - if (glyphidx) { 369 - specs[numspecs].font = font->match; 370 - specs[numspecs].glyph = glyphidx; 371 - specs[numspecs].x = (short)xp; 372 - specs[numspecs].y = (short)yp; 373 - xp += runewidth; 374 - numspecs++; 375 - continue; 376 - } 377 - 378 - /* Fallback on font cache, search the font cache for match. */ 379 - for (f = 0; f < frclen; f++) { 380 - glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune); 381 - /* Everything correct. */ 382 - if (glyphidx && frc[f].flags == frcflags) 383 - break; 384 - /* We got a default font for a not found glyph. */ 385 - if (!glyphidx && frc[f].flags == frcflags 386 - && frc[f].unicodep == rune) { 387 - break; 388 + /* Shape the segment. */ 389 + hbtransform(&shaped, font->match, glyphs, start, length); 390 + runewidth = win.cw * ((glyphs[start].mode & ATTR_WIDE) ? 2.0f : 1.0f); 391 + cluster_xp = xp; cluster_yp = yp; 392 + for (int code_idx = 0; code_idx < shaped.count; code_idx++) { 393 + int idx = shaped.glyphs[code_idx].cluster; 394 + 395 + if (glyphs[start + idx].mode & ATTR_WDUMMY) 396 + continue; 397 + 398 + /* Advance the drawing cursor if we've moved to a new cluster */ 399 + if (code_idx > 0 && idx != shaped.glyphs[code_idx - 1].cluster) { 400 + xp += runewidth; 401 + cluster_xp = xp; 402 + cluster_yp = yp; 403 + runewidth = win.cw * ((glyphs[start + idx].mode & ATTR_WIDE) ? 2.0f : 1.0f); 404 + } 405 + 406 + if (glyphs[start + idx].mode & ATTR_BOXDRAW) { 407 + /* minor shoehorning: boxdraw uses only this ushort */ 408 + specs[numspecs].font = font->match; 409 + specs[numspecs].glyph = boxdrawindex(&glyphs[start + idx]); 410 + specs[numspecs].x = xp; 411 + specs[numspecs].y = yp; 412 + numspecs++; 413 + } else if (shaped.glyphs[code_idx].codepoint != 0) { 414 + /* If symbol is found, put it into the specs. */ 415 + specs[numspecs].font = font->match; 416 + specs[numspecs].glyph = shaped.glyphs[code_idx].codepoint; 417 + specs[numspecs].x = cluster_xp + (short)(shaped.positions[code_idx].x_offset / 64.); 418 + specs[numspecs].y = cluster_yp - (short)(shaped.positions[code_idx].y_offset / 64.); 419 + cluster_xp += shaped.positions[code_idx].x_advance / 64.; 420 + cluster_yp += shaped.positions[code_idx].y_advance / 64.; 421 + numspecs++; 422 + } else { 423 + /* If it's not found, try to fetch it through the font cache. */ 424 + rune = glyphs[start + idx].u; 425 + for (f = 0; f < frclen; f++) { 426 + glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune); 427 + /* Everything correct. */ 428 + if (glyphidx && frc[f].flags == frcflags) 429 + break; 430 + /* We got a default font for a not found glyph. */ 431 + if (!glyphidx && frc[f].flags == frcflags 432 + && frc[f].unicodep == rune) { 433 + break; 434 + } 435 + } 436 + 437 + /* Nothing was found. Use fontconfig to find matching font. */ 438 + if (f >= frclen) { 439 + if (!font->set) 440 + font->set = FcFontSort(0, font->pattern, 441 + 1, 0, &fcres); 442 + fcsets[0] = font->set; 443 + 444 + /* 445 + * Nothing was found in the cache. Now use 446 + * some dozen of Fontconfig calls to get the 447 + * font for one single character. 448 + * 449 + * Xft and fontconfig are design failures. 450 + */ 451 + fcpattern = FcPatternDuplicate(font->pattern); 452 + fccharset = FcCharSetCreate(); 453 + 454 + FcCharSetAddChar(fccharset, rune); 455 + FcPatternAddCharSet(fcpattern, FC_CHARSET, 456 + fccharset); 457 + FcPatternAddBool(fcpattern, FC_SCALABLE, 1); 458 + 459 + FcConfigSubstitute(0, fcpattern, 460 + FcMatchPattern); 461 + FcDefaultSubstitute(fcpattern); 462 + 463 + fontpattern = FcFontSetMatch(0, fcsets, 1, 464 + fcpattern, &fcres); 465 + 466 + /* Allocate memory for the new cache entry. */ 467 + if (frclen >= frccap) { 468 + frccap += 16; 469 + frc = xrealloc(frc, frccap * sizeof(Fontcache)); 470 + } 471 + 472 + frc[frclen].font = XftFontOpenPattern(xw.dpy, 473 + fontpattern); 474 + if (!frc[frclen].font) 475 + die("XftFontOpenPattern failed seeking fallback font: %s\n", 476 + strerror(errno)); 477 + frc[frclen].flags = frcflags; 478 + frc[frclen].unicodep = rune; 479 + 480 + glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune); 481 + 482 + f = frclen; 483 + frclen++; 484 + 485 + FcPatternDestroy(fcpattern); 486 + FcCharSetDestroy(fccharset); 487 + } 488 + 489 + specs[numspecs].font = frc[f].font; 490 + specs[numspecs].glyph = glyphidx; 491 + specs[numspecs].x = (short)xp; 492 + specs[numspecs].y = (short)yp; 493 + numspecs++; 494 + } 495 } 496 - } 497 498 - /* Nothing was found. Use fontconfig to find matching font. */ 499 - if (f >= frclen) { 500 - if (!font->set) 501 - font->set = FcFontSort(0, font->pattern, 502 - 1, 0, &fcres); 503 - fcsets[0] = font->set; 504 + /* Cleanup and get ready for next segment. */ 505 + hbcleanup(&shaped); 506 + start = i; 507 508 - /* 509 - * Nothing was found in the cache. Now use 510 - * some dozen of Fontconfig calls to get the 511 - * font for one single character. 512 - * 513 - * Xft and fontconfig are design failures. 514 - */ 515 - fcpattern = FcPatternDuplicate(font->pattern); 516 - fccharset = FcCharSetCreate(); 517 - 518 - FcCharSetAddChar(fccharset, rune); 519 - FcPatternAddCharSet(fcpattern, FC_CHARSET, 520 - fccharset); 521 - FcPatternAddBool(fcpattern, FC_SCALABLE, 1); 522 - 523 - FcConfigSubstitute(0, fcpattern, 524 - FcMatchPattern); 525 - FcDefaultSubstitute(fcpattern); 526 - 527 - fontpattern = FcFontSetMatch(0, fcsets, 1, 528 - fcpattern, &fcres); 529 - 530 - /* Allocate memory for the new cache entry. */ 531 - if (frclen >= frccap) { 532 - frccap += 16; 533 - frc = xrealloc(frc, frccap * sizeof(Fontcache)); 534 + /* Determine font for glyph if different from previous glyph. */ 535 + if (prevmode != mode) { 536 + prevmode = mode; 537 + xresetfontsettings(mode, &font, &frcflags); 538 + yp = winy + font->ascent; 539 } 540 - 541 - frc[frclen].font = XftFontOpenPattern(xw.dpy, 542 - fontpattern); 543 - if (!frc[frclen].font) 544 - die("XftFontOpenPattern failed seeking fallback font: %s\n", 545 - strerror(errno)); 546 - frc[frclen].flags = frcflags; 547 - frc[frclen].unicodep = rune; 548 - 549 - glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune); 550 - 551 - f = frclen; 552 - frclen++; 553 - 554 - FcPatternDestroy(fcpattern); 555 - FcCharSetDestroy(fccharset); 556 } 557 - 558 - specs[numspecs].font = frc[f].font; 559 - specs[numspecs].glyph = glyphidx; 560 - specs[numspecs].x = (short)xp; 561 - specs[numspecs].y = (short)yp; 562 - xp += runewidth; 563 - numspecs++; 564 } 565 566 + hbcleanup(&shaped); 567 return numspecs; 568 } 569 570 @@ -1528,14 +1581,17 @@ xdrawglyph(Glyph g, int x, int y) 571 } 572 573 void 574 -xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og) 575 +xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int len) 576 { 577 Color drawcol; 578 579 /* remove the old cursor */ 580 if (selected(ox, oy)) 581 og.mode ^= ATTR_REVERSE; 582 - xdrawglyph(og, ox, oy); 583 + 584 + /* Redraw the line where cursor was previously. 585 + * It will restore the ligatures broken by the cursor. */ 586 + xdrawline(line, 0, oy, len); 587 588 if (IS_SET(MODE_HIDE)) 589 return; 590 @@ -1663,18 +1719,16 @@ xdrawline(Line line, int x1, int y1, int x2) 591 Glyph base, new; 592 XftGlyphFontSpec *specs = xw.specbuf; 593 594 - numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1); 595 i = ox = 0; 596 - for (x = x1; x < x2 && i < numspecs; x++) { 597 + for (x = x1; x < x2; x++) { 598 new = line[x]; 599 if (new.mode == ATTR_WDUMMY) 600 continue; 601 if (selected(x, y1)) 602 new.mode ^= ATTR_REVERSE; 603 - if (i > 0 && ATTRCMP(base, new)) { 604 - xdrawglyphfontspecs(specs, base, i, ox, y1); 605 - specs += i; 606 - numspecs -= i; 607 + if ((i > 0) && ATTRCMP(base, new)) { 608 + numspecs = xmakeglyphfontspecs(specs, &line[ox], x - ox, ox, y1); 609 + xdrawglyphfontspecs(specs, base, numspecs, ox, y1); 610 i = 0; 611 } 612 if (i == 0) { 613 @@ -1683,8 +1737,10 @@ xdrawline(Line line, int x1, int y1, int x2) 614 } 615 i++; 616 } 617 - if (i > 0) 618 - xdrawglyphfontspecs(specs, base, i, ox, y1); 619 + if (i > 0) { 620 + numspecs = xmakeglyphfontspecs(specs, &line[ox], x2 - ox, ox, y1); 621 + xdrawglyphfontspecs(specs, base, numspecs, ox, y1); 622 + } 623 } 624 625 void