st-ligatures-scrollback-20240427-0.9.2.diff (18746B)
1 diff --git a/Makefile b/Makefile 2 index 470ac86..38240da 100644 3 --- a/Makefile 4 +++ b/Makefile 5 @@ -4,7 +4,7 @@ 6 7 include config.mk 8 9 -SRC = st.c x.c 10 +SRC = st.c x.c hb.c 11 OBJ = $(SRC:.c=.o) 12 13 all: st 14 @@ -22,7 +22,8 @@ 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 +hb.o: st.h 21 22 $(OBJ): config.h config.mk 23 24 diff --git a/config.mk b/config.mk 25 index 1e306f8..3e13e53 100644 26 --- a/config.mk 27 +++ b/config.mk 28 @@ -15,10 +15,12 @@ PKG_CONFIG = pkg-config 29 # includes and libs 30 INCS = -I$(X11INC) \ 31 `$(PKG_CONFIG) --cflags fontconfig` \ 32 - `$(PKG_CONFIG) --cflags freetype2` 33 + `$(PKG_CONFIG) --cflags freetype2` \ 34 + `$(PKG_CONFIG) --cflags harfbuzz` 35 LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \ 36 `$(PKG_CONFIG) --libs fontconfig` \ 37 - `$(PKG_CONFIG) --libs freetype2` 38 + `$(PKG_CONFIG) --libs freetype2` \ 39 + `$(PKG_CONFIG) --libs harfbuzz` 40 41 # flags 42 STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 43 diff --git a/hb.c b/hb.c 44 new file mode 100644 45 index 0000000..99412c8 46 --- /dev/null 47 +++ b/hb.c 48 @@ -0,0 +1,125 @@ 49 +#include <stdlib.h> 50 +#include <stdio.h> 51 +#include <math.h> 52 +#include <X11/Xft/Xft.h> 53 +#include <X11/cursorfont.h> 54 +#include <hb.h> 55 +#include <hb-ft.h> 56 + 57 +#include "st.h" 58 +#include "hb.h" 59 + 60 +#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 } 61 +#define BUFFER_STEP 256 62 + 63 +hb_font_t *hbfindfont(XftFont *match); 64 + 65 +typedef struct { 66 + XftFont *match; 67 + hb_font_t *font; 68 +} HbFontMatch; 69 + 70 +typedef struct { 71 + size_t capacity; 72 + HbFontMatch *fonts; 73 +} HbFontCache; 74 + 75 +static HbFontCache hbfontcache = { 0, NULL }; 76 + 77 +typedef struct { 78 + size_t capacity; 79 + Rune *runes; 80 +} RuneBuffer; 81 + 82 +static RuneBuffer hbrunebuffer = { 0, NULL }; 83 + 84 +/* 85 + * Poplulate the array with a list of font features, wrapped in FEATURE macro, 86 + * e. g. 87 + * FEATURE('c', 'a', 'l', 't'), FEATURE('d', 'l', 'i', 'g') 88 + */ 89 +hb_feature_t features[] = { }; 90 + 91 +void 92 +hbunloadfonts() 93 +{ 94 + for (int i = 0; i < hbfontcache.capacity; i++) { 95 + hb_font_destroy(hbfontcache.fonts[i].font); 96 + XftUnlockFace(hbfontcache.fonts[i].match); 97 + } 98 + 99 + if (hbfontcache.fonts != NULL) { 100 + free(hbfontcache.fonts); 101 + hbfontcache.fonts = NULL; 102 + } 103 + hbfontcache.capacity = 0; 104 +} 105 + 106 +hb_font_t * 107 +hbfindfont(XftFont *match) 108 +{ 109 + for (int i = 0; i < hbfontcache.capacity; i++) { 110 + if (hbfontcache.fonts[i].match == match) 111 + return hbfontcache.fonts[i].font; 112 + } 113 + 114 + /* Font not found in cache, caching it now. */ 115 + hbfontcache.fonts = realloc(hbfontcache.fonts, sizeof(HbFontMatch) * (hbfontcache.capacity + 1)); 116 + FT_Face face = XftLockFace(match); 117 + hb_font_t *font = hb_ft_font_create(face, NULL); 118 + if (font == NULL) 119 + die("Failed to load Harfbuzz font."); 120 + 121 + hbfontcache.fonts[hbfontcache.capacity].match = match; 122 + hbfontcache.fonts[hbfontcache.capacity].font = font; 123 + hbfontcache.capacity += 1; 124 + 125 + return font; 126 +} 127 + 128 +void hbtransform(HbTransformData *data, XftFont *xfont, const Glyph *glyphs, int start, int length) { 129 + ushort mode = USHRT_MAX; 130 + unsigned int glyph_count; 131 + int rune_idx, glyph_idx, end = start + length; 132 + 133 + hb_font_t *font = hbfindfont(xfont); 134 + if (font == NULL) 135 + return; 136 + 137 + hb_buffer_t *buffer = hb_buffer_create(); 138 + hb_buffer_set_direction(buffer, HB_DIRECTION_LTR); 139 + hb_buffer_set_cluster_level(buffer, HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS); 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..3b0ef44 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 79ee9ba..7675db6 100644 196 --- a/st.c 197 +++ b/st.c 198 @@ -2711,7 +2711,8 @@ draw(void) 199 drawregion(0, 0, term.col, term.row); 200 if (term.scr == 0) 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 818a6f8..4e584b6 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 2a3bd38..0bb51ff 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 @@ -141,8 +142,9 @@ 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 xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int, int); 255 static void xdrawglyph(Glyph, int, int); 256 static void xclear(int, int, int, int); 257 static int xgeommasktogravity(int); 258 @@ -757,7 +759,7 @@ xresize(int col, int row) 259 xclear(0, 0, win.w, win.h); 260 261 /* resize to new width */ 262 - xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec)); 263 + xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec) * 4); 264 } 265 266 ushort 267 @@ -1062,6 +1064,9 @@ xunloadfont(Font *f) 268 void 269 xunloadfonts(void) 270 { 271 + /* Clear Harfbuzz font cache. */ 272 + hbunloadfonts(); 273 + 274 /* Free the loaded fonts in the font cache. */ 275 while (frclen > 0) 276 XftFontClose(xw.dpy, frc[--frclen].font); 277 @@ -1185,7 +1190,7 @@ xinit(int cols, int rows) 278 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h); 279 280 /* font spec buffer */ 281 - xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec)); 282 + xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec) * 4); 283 284 /* Xft rendering context */ 285 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap); 286 @@ -1239,6 +1244,22 @@ xinit(int cols, int rows) 287 xsel.xtarget = XA_STRING; 288 } 289 290 +void 291 +xresetfontsettings(ushort mode, Font **font, int *frcflags) 292 +{ 293 + *font = &dc.font; 294 + if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) { 295 + *font = &dc.ibfont; 296 + *frcflags = FRC_ITALICBOLD; 297 + } else if (mode & ATTR_ITALIC) { 298 + *font = &dc.ifont; 299 + *frcflags = FRC_ITALIC; 300 + } else if (mode & ATTR_BOLD) { 301 + *font = &dc.bfont; 302 + *frcflags = FRC_BOLD; 303 + } 304 +} 305 + 306 int 307 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y) 308 { 309 @@ -1253,128 +1274,157 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x 310 FcPattern *fcpattern, *fontpattern; 311 FcFontSet *fcsets[] = { NULL }; 312 FcCharSet *fccharset; 313 - int i, f, numspecs = 0; 314 + int i, f, length = 0, start = 0, numspecs = 0; 315 + float cluster_xp = xp, cluster_yp = yp; 316 + HbTransformData shaped = { 0 }; 317 + 318 + /* Initial values. */ 319 + mode = prevmode = glyphs[0].mode & ~ATTR_WRAP; 320 + xresetfontsettings(mode, &font, &frcflags); 321 322 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) { 323 - /* Fetch rune and mode for current glyph. */ 324 - rune = glyphs[i].u; 325 - mode = glyphs[i].mode; 326 + mode = glyphs[i].mode & ~ATTR_WRAP; 327 328 /* Skip dummy wide-character spacing. */ 329 - if (mode == ATTR_WDUMMY) 330 + if (mode & ATTR_WDUMMY && i < (len - 1)) 331 continue; 332 333 - /* Determine font for glyph if different from previous glyph. */ 334 - if (prevmode != mode) { 335 - prevmode = mode; 336 - font = &dc.font; 337 - frcflags = FRC_NORMAL; 338 - runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f); 339 - if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) { 340 - font = &dc.ibfont; 341 - frcflags = FRC_ITALICBOLD; 342 - } else if (mode & ATTR_ITALIC) { 343 - font = &dc.ifont; 344 - frcflags = FRC_ITALIC; 345 - } else if (mode & ATTR_BOLD) { 346 - font = &dc.bfont; 347 - frcflags = FRC_BOLD; 348 + if ( 349 + prevmode != mode 350 + || ATTRCMP(glyphs[start], glyphs[i]) 351 + || selected(x + i, y) != selected(x + start, y) 352 + || i == (len - 1) 353 + ) { 354 + /* Handle 1-character wide segments and end of line */ 355 + length = i - start; 356 + if (i == start) { 357 + length = 1; 358 + } else if (i == (len - 1)) { 359 + length = (i - start + 1); 360 } 361 - yp = winy + font->ascent; 362 - } 363 364 - /* Lookup character index with default font. */ 365 - glyphidx = XftCharIndex(xw.dpy, font->match, rune); 366 - if (glyphidx) { 367 - specs[numspecs].font = font->match; 368 - specs[numspecs].glyph = glyphidx; 369 - specs[numspecs].x = (short)xp; 370 - specs[numspecs].y = (short)yp; 371 - xp += runewidth; 372 - numspecs++; 373 - continue; 374 - } 375 - 376 - /* Fallback on font cache, search the font cache for match. */ 377 - for (f = 0; f < frclen; f++) { 378 - glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune); 379 - /* Everything correct. */ 380 - if (glyphidx && frc[f].flags == frcflags) 381 - break; 382 - /* We got a default font for a not found glyph. */ 383 - if (!glyphidx && frc[f].flags == frcflags 384 - && frc[f].unicodep == rune) { 385 - break; 386 + /* Shape the segment. */ 387 + hbtransform(&shaped, font->match, glyphs, start, length); 388 + runewidth = win.cw * ((glyphs[start].mode & ATTR_WIDE) ? 2.0f : 1.0f); 389 + cluster_xp = xp; cluster_yp = yp; 390 + for (int code_idx = 0; code_idx < shaped.count; code_idx++) { 391 + int idx = shaped.glyphs[code_idx].cluster; 392 + 393 + if (glyphs[start + idx].mode & ATTR_WDUMMY) 394 + continue; 395 + 396 + /* Advance the drawing cursor if we've moved to a new cluster */ 397 + if (code_idx > 0 && idx != shaped.glyphs[code_idx - 1].cluster) { 398 + xp += runewidth; 399 + cluster_xp = xp; 400 + cluster_yp = yp; 401 + runewidth = win.cw * ((glyphs[start + idx].mode & ATTR_WIDE) ? 2.0f : 1.0f); 402 + } 403 + 404 + if (shaped.glyphs[code_idx].codepoint != 0) { 405 + /* If symbol is found, put it into the specs. */ 406 + specs[numspecs].font = font->match; 407 + specs[numspecs].glyph = shaped.glyphs[code_idx].codepoint; 408 + specs[numspecs].x = cluster_xp + (short)(shaped.positions[code_idx].x_offset / 64.); 409 + specs[numspecs].y = cluster_yp - (short)(shaped.positions[code_idx].y_offset / 64.); 410 + cluster_xp += shaped.positions[code_idx].x_advance / 64.; 411 + cluster_yp += shaped.positions[code_idx].y_advance / 64.; 412 + numspecs++; 413 + } else { 414 + /* If it's not found, try to fetch it through the font cache. */ 415 + rune = glyphs[start + idx].u; 416 + for (f = 0; f < frclen; f++) { 417 + glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune); 418 + /* Everything correct. */ 419 + if (glyphidx && frc[f].flags == frcflags) 420 + break; 421 + /* We got a default font for a not found glyph. */ 422 + if (!glyphidx && frc[f].flags == frcflags 423 + && frc[f].unicodep == rune) { 424 + break; 425 + } 426 + } 427 + 428 + /* Nothing was found. Use fontconfig to find matching font. */ 429 + if (f >= frclen) { 430 + if (!font->set) 431 + font->set = FcFontSort(0, font->pattern, 432 + 1, 0, &fcres); 433 + fcsets[0] = font->set; 434 + 435 + /* 436 + * Nothing was found in the cache. Now use 437 + * some dozen of Fontconfig calls to get the 438 + * font for one single character. 439 + * 440 + * Xft and fontconfig are design failures. 441 + */ 442 + fcpattern = FcPatternDuplicate(font->pattern); 443 + fccharset = FcCharSetCreate(); 444 + 445 + FcCharSetAddChar(fccharset, rune); 446 + FcPatternAddCharSet(fcpattern, FC_CHARSET, 447 + fccharset); 448 + FcPatternAddBool(fcpattern, FC_SCALABLE, 1); 449 + 450 + FcConfigSubstitute(0, fcpattern, 451 + FcMatchPattern); 452 + FcDefaultSubstitute(fcpattern); 453 + 454 + fontpattern = FcFontSetMatch(0, fcsets, 1, 455 + fcpattern, &fcres); 456 + 457 + /* Allocate memory for the new cache entry. */ 458 + if (frclen >= frccap) { 459 + frccap += 16; 460 + frc = xrealloc(frc, frccap * sizeof(Fontcache)); 461 + } 462 + 463 + frc[frclen].font = XftFontOpenPattern(xw.dpy, 464 + fontpattern); 465 + if (!frc[frclen].font) 466 + die("XftFontOpenPattern failed seeking fallback font: %s\n", 467 + strerror(errno)); 468 + frc[frclen].flags = frcflags; 469 + frc[frclen].unicodep = rune; 470 + 471 + glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune); 472 + 473 + f = frclen; 474 + frclen++; 475 + 476 + FcPatternDestroy(fcpattern); 477 + FcCharSetDestroy(fccharset); 478 + } 479 + 480 + specs[numspecs].font = frc[f].font; 481 + specs[numspecs].glyph = glyphidx; 482 + specs[numspecs].x = (short)xp; 483 + specs[numspecs].y = (short)yp; 484 + numspecs++; 485 + } 486 } 487 - } 488 489 - /* Nothing was found. Use fontconfig to find matching font. */ 490 - if (f >= frclen) { 491 - if (!font->set) 492 - font->set = FcFontSort(0, font->pattern, 493 - 1, 0, &fcres); 494 - fcsets[0] = font->set; 495 + /* Cleanup and get ready for next segment. */ 496 + hbcleanup(&shaped); 497 + start = i; 498 499 - /* 500 - * Nothing was found in the cache. Now use 501 - * some dozen of Fontconfig calls to get the 502 - * font for one single character. 503 - * 504 - * Xft and fontconfig are design failures. 505 - */ 506 - fcpattern = FcPatternDuplicate(font->pattern); 507 - fccharset = FcCharSetCreate(); 508 - 509 - FcCharSetAddChar(fccharset, rune); 510 - FcPatternAddCharSet(fcpattern, FC_CHARSET, 511 - fccharset); 512 - FcPatternAddBool(fcpattern, FC_SCALABLE, 1); 513 - 514 - FcConfigSubstitute(0, fcpattern, 515 - FcMatchPattern); 516 - FcDefaultSubstitute(fcpattern); 517 - 518 - fontpattern = FcFontSetMatch(0, fcsets, 1, 519 - fcpattern, &fcres); 520 - 521 - /* Allocate memory for the new cache entry. */ 522 - if (frclen >= frccap) { 523 - frccap += 16; 524 - frc = xrealloc(frc, frccap * sizeof(Fontcache)); 525 + /* Determine font for glyph if different from previous glyph. */ 526 + if (prevmode != mode) { 527 + prevmode = mode; 528 + xresetfontsettings(mode, &font, &frcflags); 529 + yp = winy + font->ascent; 530 } 531 - 532 - frc[frclen].font = XftFontOpenPattern(xw.dpy, 533 - fontpattern); 534 - if (!frc[frclen].font) 535 - die("XftFontOpenPattern failed seeking fallback font: %s\n", 536 - strerror(errno)); 537 - frc[frclen].flags = frcflags; 538 - frc[frclen].unicodep = rune; 539 - 540 - glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune); 541 - 542 - f = frclen; 543 - frclen++; 544 - 545 - FcPatternDestroy(fcpattern); 546 - FcCharSetDestroy(fccharset); 547 } 548 - 549 - specs[numspecs].font = frc[f].font; 550 - specs[numspecs].glyph = glyphidx; 551 - specs[numspecs].x = (short)xp; 552 - specs[numspecs].y = (short)yp; 553 - xp += runewidth; 554 - numspecs++; 555 } 556 557 + hbcleanup(&shaped); 558 return numspecs; 559 } 560 561 void 562 -xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y) 563 +xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y, int charlen) 564 { 565 - int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1); 566 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, 567 width = charlen * win.cw; 568 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg; 569 @@ -1510,21 +1560,24 @@ void 570 xdrawglyph(Glyph g, int x, int y) 571 { 572 int numspecs; 573 - XftGlyphFontSpec spec; 574 + XftGlyphFontSpec *specs = xw.specbuf; 575 576 - numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y); 577 - xdrawglyphfontspecs(&spec, g, numspecs, x, y); 578 + numspecs = xmakeglyphfontspecs(specs, &g, 1, x, y); 579 + xdrawglyphfontspecs(specs, g, numspecs, x, y, (g.mode & ATTR_WIDE) ? 2 : 1); 580 } 581 582 void 583 -xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og) 584 +xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int len) 585 { 586 Color drawcol; 587 588 /* remove the old cursor */ 589 if (selected(ox, oy)) 590 og.mode ^= ATTR_REVERSE; 591 - xdrawglyph(og, ox, oy); 592 + 593 + /* Redraw the line where cursor was previously. 594 + * It will restore the ligatures broken by the cursor. */ 595 + xdrawline(line, 0, oy, len); 596 597 if (IS_SET(MODE_HIDE)) 598 return; 599 @@ -1652,18 +1705,16 @@ xdrawline(Line line, int x1, int y1, int x2) 600 Glyph base, new; 601 XftGlyphFontSpec *specs = xw.specbuf; 602 603 - numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1); 604 i = ox = 0; 605 - for (x = x1; x < x2 && i < numspecs; x++) { 606 + for (x = x1; x < x2; x++) { 607 new = line[x]; 608 if (new.mode == ATTR_WDUMMY) 609 continue; 610 if (selected(x, y1)) 611 new.mode ^= ATTR_REVERSE; 612 - if (i > 0 && ATTRCMP(base, new)) { 613 - xdrawglyphfontspecs(specs, base, i, ox, y1); 614 - specs += i; 615 - numspecs -= i; 616 + if ((i > 0) && ATTRCMP(base, new)) { 617 + numspecs = xmakeglyphfontspecs(specs, &line[ox], x - ox, ox, y1); 618 + xdrawglyphfontspecs(specs, base, numspecs, ox, y1, x - ox); 619 i = 0; 620 } 621 if (i == 0) { 622 @@ -1672,8 +1723,10 @@ xdrawline(Line line, int x1, int y1, int x2) 623 } 624 i++; 625 } 626 - if (i > 0) 627 - xdrawglyphfontspecs(specs, base, i, ox, y1); 628 + if (i > 0) { 629 + numspecs = xmakeglyphfontspecs(specs, &line[ox], x2 - ox, ox, y1); 630 + xdrawglyphfontspecs(specs, base, numspecs, ox, y1, x2 - ox); 631 + } 632 } 633 634 void