GopherProxy

	st-ligatures-alpha-scrollback-ringbuffer-20241226-0.9.2.diff - sites - public w…
	git clone git://git.suckless.org/sites
	Log
	Files
	Refs
	---
	st-ligatures-alpha-scrollback-ringbuffer-20241226-0.9.2.diff (18905B)
	---
	1 diff --git a/Makefile b/Makefile
	2 index 15db421..dfcea0f 100644
	3 --- a/Makefile
	4 +++ b/Makefile
	5 @@ -3,9 +3,9 @@
	6 .POSIX:
	7
	8 include config.mk
	9
	10 -SRC = st.c x.c
	11 +SRC = st.c x.c hb.c
	12 OBJ = $(SRC:.c=.o)
	13
	14 all: st
	15
	16 @@ -15,9 +15,10 @@ config.h:
	17 .c.o:
	18 $(CC) $(STCFLAGS) -c $<
	19
	20 st.o: config.h st.h win.h
	21 -x.o: arg.h config.h st.h win.h
	22 +x.o: arg.h config.h st.h win.h hb.h
	23 +hb.o: st.h
	24
	25 $(OBJ): config.h config.mk
	26
	27 st: $(OBJ)
	28 diff --git a/config.mk b/config.mk
	29 index 069a6c2..977b7c7 100644
	30 --- a/config.mk
	31 +++ b/config.mk
	32 @@ -14,12 +14,14 @@ PKG_CONFIG = pkg-config
	33
	34 # includes and libs
	35 INCS = -I$(X11INC) \
	36 `$(PKG_CONFIG) --cflags fontconfig` \
	37 - `$(PKG_CONFIG) --cflags freetype2`
	38 + `$(PKG_CONFIG) --cflags freetype2` \
	39 + `$(PKG_CONFIG) --cflags harfbuzz`
	40 LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lXrender\
	41 `$(PKG_CONFIG) --libs fontconfig` \
	42 - `$(PKG_CONFIG) --libs freetype2`
	43 + `$(PKG_CONFIG) --libs freetype2` \
	44 + `$(PKG_CONFIG) --libs harfbuzz`
	45
	46 # flags
	47 STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
	48 STCFLAGS = $(INCS) $(STCPPFLAGS) $(CPPFLAGS) $(CFLAGS)
	49 @@ -28,9 +30,10 @@ STLDFLAGS = $(LIBS) $(LDFLAGS)
	50 # OpenBSD:
	51 #CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
	52 #LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \
	53 # `$(PKG_CONFIG) --libs fontconfig` \
	54 -# `$(PKG_CONFIG) --libs freetype2`
	55 +# `$(PKG_CONFIG) --libs freetype2` \
	56 +# `$(PKG_CONFIG) --libs harfbuzz`
	57 #MANPREFIX = ${PREFIX}/man
	58
	59 # compiler and linker
	60 # CC = c99
	61 diff --git a/hb.c b/hb.c
	62 new file mode 100644
	63 index 0000000..99412c8
	64 --- /dev/null
	65 +++ b/hb.c
	66 @@ -0,0 +1,125 @@
	67 +#include <stdlib.h>
	68 +#include <stdio.h>
	69 +#include <math.h>
	70 +#include <X11/Xft/Xft.h>
	71 +#include <X11/cursorfont.h>
	72 +#include <hb.h>
	73 +#include <hb-ft.h>
	74 +
	75 +#include "st.h"
	76 +#include "hb.h"
	77 +
	78 +#define FEATURE(c1,c2,c3,c4) { .tag = HB_TAG(c1,c2,c3,c4), .value = 1, …
	79 +#define BUFFER_STEP 256
	80 +
	81 +hb_font_t hbfindfont(XftFont match);
	82 +
	83 +typedef struct {
	84 + XftFont *match;
	85 + hb_font_t *font;
	86 +} HbFontMatch;
	87 +
	88 +typedef struct {
	89 + size_t capacity;
	90 + HbFontMatch *fonts;
	91 +} HbFontCache;
	92 +
	93 +static HbFontCache hbfontcache = { 0, NULL };
	94 +
	95 +typedef struct {
	96 + size_t capacity;
	97 + Rune *runes;
	98 +} RuneBuffer;
	99 +
	100 +static RuneBuffer hbrunebuffer = { 0, NULL };
	101 +
	102 +/*
	103 + * Poplulate the array with a list of font features, wrapped in FEATURE…
	104 + * e. g.
	105 + * FEATURE('c', 'a', 'l', 't'), FEATURE('d', 'l', 'i', 'g')
	106 + */
	107 +hb_feature_t features[] = { };
	108 +
	109 +void
	110 +hbunloadfonts()
	111 +{
	112 + for (int i = 0; i < hbfontcache.capacity; i++) {
	113 + hb_font_destroy(hbfontcache.fonts[i].font);
	114 + XftUnlockFace(hbfontcache.fonts[i].match);
	115 + }
	116 +
	117 + if (hbfontcache.fonts != NULL) {
	118 + free(hbfontcache.fonts);
	119 + hbfontcache.fonts = NULL;
	120 + }
	121 + hbfontcache.capacity = 0;
	122 +}
	123 +
	124 +hb_font_t *
	125 +hbfindfont(XftFont *match)
	126 +{
	127 + for (int i = 0; i < hbfontcache.capacity; i++) {
	128 + if (hbfontcache.fonts[i].match == match)
	129 + return hbfontcache.fonts[i].font;
	130 + }
	131 +
	132 + /* Font not found in cache, caching it now. */
	133 + hbfontcache.fonts = realloc(hbfontcache.fonts, sizeof(HbFontMat…
	134 + FT_Face face = XftLockFace(match);
	135 + hb_font_t *font = hb_ft_font_create(face, NULL);
	136 + if (font == NULL)
	137 + die("Failed to load Harfbuzz font.");
	138 +
	139 + hbfontcache.fonts[hbfontcache.capacity].match = match;
	140 + hbfontcache.fonts[hbfontcache.capacity].font = font;
	141 + hbfontcache.capacity += 1;
	142 +
	143 + return font;
	144 +}
	145 +
	146 +void hbtransform(HbTransformData data, XftFont xfont, const Glyph *gl…
	147 + ushort mode = USHRT_MAX;
	148 + unsigned int glyph_count;
	149 + int rune_idx, glyph_idx, end = start + length;
	150 +
	151 + hb_font_t *font = hbfindfont(xfont);
	152 + if (font == NULL)
	153 + return;
	154 +
	155 + hb_buffer_t *buffer = hb_buffer_create();
	156 + hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
	157 + hb_buffer_set_cluster_level(buffer, HB_BUFFER_CLUSTER_LEVEL_MON…
	158 +
	159 + /* Resize the buffer if required length is larger. */
	160 + if (hbrunebuffer.capacity < length) {
	161 + hbrunebuffer.capacity = (length / BUFFER_STEP + 1) * BU…
	162 + hbrunebuffer.runes = realloc(hbrunebuffer.runes, hbrune…
	163 + }
	164 +
	165 + /* Fill buffer with codepoints. */
	166 + for (rune_idx = 0, glyph_idx = start; glyph_idx < end; glyph_id…
	167 + hbrunebuffer.runes[rune_idx] = glyphs[glyph_idx].u;
	168 + mode = glyphs[glyph_idx].mode;
	169 + if (mode & ATTR_WDUMMY)
	170 + hbrunebuffer.runes[rune_idx] = 0x0020;
	171 + }
	172 + hb_buffer_add_codepoints(buffer, hbrunebuffer.runes, length, 0,…
	173 +
	174 + /* Shape the segment. */
	175 + hb_shape(font, buffer, features, sizeof(features)/sizeof(hb_fea…
	176 +
	177 + /* Get new glyph info. */
	178 + hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, &glyp…
	179 + hb_glyph_position_t *pos = hb_buffer_get_glyph_positions(buffer…
	180 +
	181 + /* Fill the output. */
	182 + data->buffer = buffer;
	183 + data->glyphs = info;
	184 + data->positions = pos;
	185 + data->count = glyph_count;
	186 +}
	187 +
	188 +void hbcleanup(HbTransformData *data) {
	189 + hb_buffer_destroy(data->buffer);
	190 + memset(data, 0, sizeof(HbTransformData));
	191 +}
	192 diff --git a/hb.h b/hb.h
	193 new file mode 100644
	194 index 0000000..3b0ef44
	195 --- /dev/null
	196 +++ b/hb.h
	197 @@ -0,0 +1,14 @@
	198 +#include <X11/Xft/Xft.h>
	199 +#include <hb.h>
	200 +#include <hb-ft.h>
	201 +
	202 +typedef struct {
	203 + hb_buffer_t *buffer;
	204 + hb_glyph_info_t *glyphs;
	205 + hb_glyph_position_t *positions;
	206 + unsigned int count;
	207 +} HbTransformData;
	208 +
	209 +void hbunloadfonts();
	210 +void hbtransform(HbTransformData , XftFont , const Glyph *, int, int);
	211 +void hbcleanup(HbTransformData *);
	212 diff --git a/st.c b/st.c
	213 index d9b163e..fbca4ba 100644
	214 --- a/st.c
	215 +++ b/st.c
	216 @@ -2777,9 +2777,10 @@ draw(void)
	217
	218 drawregion(0, 0, term.col, term.row);
	219 if (TSCREEN.off == 0)
	220 xdrawcursor(cx, term.c.y, TLINE(term.c.y)[cx],
	221 - term.ocx, term.ocy, TLINE(term.ocy)[ter…
	222 + term.ocx, term.ocy, TLINE(term.ocy)[ter…
	223 + TLINE(term.ocy), term.col);
	224 term.ocx = cx;
	225 term.ocy = term.c.y;
	226 xfinishdraw();
	227 if (ocx != term.ocx \|\| ocy != term.ocy)
	228 diff --git a/st.h b/st.h
	229 index 073851a..d0b071d 100644
	230 --- a/st.h
	231 +++ b/st.h
	232 @@ -10,9 +10,10 @@
	233 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
	234 #define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
	235 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
	236 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b)…
	237 -#define ATTRCMP(a, b) ((a).mode != (b).mode \|\| (a).fg !=…
	238 +#define ATTRCMP(a, b) (((a).mode & (~ATTR_WRAP)) != ((b)…
	239 + (a).fg != (b).fg \|\| \
	240 (a).bg != (b).bg)
	241 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
	242 (t1.tv_nsec-t2.tv_nsec)/1E6)
	243 #define MODBIT(x, set, bit) ((set) ? ((x) \|= (bit)) : ((x) &= ~(…
	244 diff --git a/win.h b/win.h
	245 index 6de960d..94679e4 100644
	246 --- a/win.h
	247 +++ b/win.h
	248 @@ -24,9 +24,9 @@ enum win_mode {
	249 };
	250
	251 void xbell(void);
	252 void xclipcopy(void);
	253 -void xdrawcursor(int, int, Glyph, int, int, Glyph);
	254 +void xdrawcursor(int, int, Glyph, int, int, Glyph, Line, int);
	255 void xdrawline(Line, int, int, int);
	256 void xfinishdraw(void);
	257 void xloadcols(void);
	258 int xsetcolorname(int, const char *);
	259 diff --git a/x.c b/x.c
	260 index c497e53..a213e52 100644
	261 --- a/x.c
	262 +++ b/x.c
	263 @@ -18,8 +18,9 @@
	264 char *argv0;
	265 #include "arg.h"
	266 #include "st.h"
	267 #include "win.h"
	268 +#include "hb.h"
	269
	270 /* types used in config.h */
	271 typedef struct {
	272 uint mod;
	273 @@ -143,10 +144,11 @@ typedef struct {
	274 GC gc;
	275 } DC;
	276
	277 static inline ushort sixd_to_16bit(int);
	278 +static void xresetfontsettings(ushort mode, Font *font, int frcflags);
	279 static int xmakeglyphfontspecs(XftGlyphFontSpec , const Glyph , int, …
	280 -static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, i…
	281 +static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, i…
	282 static void xdrawglyph(Glyph, int, int);
	283 static void xclear(int, int, int, int);
	284 static int xgeommasktogravity(int);
	285 static int ximopen(Display *);
	286 @@ -760,9 +762,9 @@ xresize(int col, int row)
	287 XftDrawChange(xw.draw, xw.buf);
	288 xclear(0, 0, win.w, win.h);
	289
	290 /* resize to new width */
	291 - xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
	292 + xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec) *…
	293 }
	294
	295 ushort
	296 sixd_to_16bit(int x)
	297 @@ -1072,8 +1074,11 @@ xunloadfont(Font *f)
	298
	299 void
	300 xunloadfonts(void)
	301 {
	302 + /* Clear Harfbuzz font cache. */
	303 + hbunloadfonts();
	304 +
	305 /* Free the loaded fonts in the font cache. */
	306 while (frclen > 0)
	307 XftFontClose(xw.dpy, frc[--frclen].font);
	308
	309 @@ -1203,9 +1208,9 @@ xinit(int cols, int rows)
	310 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
	311 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
	312
	313 /* font spec buffer */
	314 - xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
	315 + xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec) * 4);
	316
	317 /* Xft rendering context */
	318 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
	319
	320 @@ -1257,144 +1262,155 @@ xinit(int cols, int rows)
	321 if (xsel.xtarget == None)
	322 xsel.xtarget = XA_STRING;
	323 }
	324
	325 +void
	326 +xresetfontsettings(ushort mode, Font *font, int frcflags)
	327 +{
	328 + *font = &dc.font;
	329 + if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
	330 + *font = &dc.ibfont;
	331 + *frcflags = FRC_ITALICBOLD;
	332 + } else if (mode & ATTR_ITALIC) {
	333 + *font = &dc.ifont;
	334 + *frcflags = FRC_ITALIC;
	335 + } else if (mode & ATTR_BOLD) {
	336 + *font = &dc.bfont;
	337 + *frcflags = FRC_BOLD;
	338 + }
	339 +}
	340 +
	341 int
	342 xmakeglyphfontspecs(XftGlyphFontSpec specs, const Glyph glyphs, int l…
	343 {
	344 float winx = borderpx + x * win.cw, winy = borderpx + y * win.c…
	345 - ushort mode, prevmode = USHRT_MAX;
	346 + ushort mode = glyphs[0].mode & ~ATTR_WRAP;
	347 Font *font = &dc.font;
	348 int frcflags = FRC_NORMAL;
	349 - float runewidth = win.cw;
	350 + float runewidth = win.cw * ((glyphs[0].mode & ATTR_WIDE) ? 2.0f…
	351 Rune rune;
	352 FT_UInt glyphidx;
	353 FcResult fcres;
	354 FcPattern fcpattern, fontpattern;
	355 FcFontSet *fcsets[] = { NULL };
	356 FcCharSet *fccharset;
	357 - int i, f, numspecs = 0;
	358 + int f, code_idx, numspecs = 0;
	359 + float cluster_xp = xp, cluster_yp = yp;
	360 + HbTransformData shaped = { 0 };
	361
	362 - for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
	363 - /* Fetch rune and mode for current glyph. */
	364 - rune = glyphs[i].u;
	365 - mode = glyphs[i].mode;
	366 + /* Initial values. */
	367 + xresetfontsettings(mode, &font, &frcflags);
	368
	369 - /* Skip dummy wide-character spacing. */
	370 - if (mode == ATTR_WDUMMY)
	371 + /* Shape the segment. */
	372 + hbtransform(&shaped, font->match, glyphs, 0, len);
	373 + xp = winx; yp = winy + font->ascent;
	374 + cluster_xp = xp; cluster_yp = yp;
	375 +
	376 + for (code_idx = 0; code_idx < shaped.count; code_idx++) {
	377 + int idx = shaped.glyphs[code_idx].cluster;
	378 +
	379 + if (glyphs[idx].mode & ATTR_WDUMMY)
	380 continue;
	381
	382 - /* Determine font for glyph if different from previous …
	383 - if (prevmode != mode) {
	384 - prevmode = mode;
	385 - font = &dc.font;
	386 - frcflags = FRC_NORMAL;
	387 - runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f…
	388 - if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD))…
	389 - font = &dc.ibfont;
	390 - frcflags = FRC_ITALICBOLD;
	391 - } else if (mode & ATTR_ITALIC) {
	392 - font = &dc.ifont;
	393 - frcflags = FRC_ITALIC;
	394 - } else if (mode & ATTR_BOLD) {
	395 - font = &dc.bfont;
	396 - frcflags = FRC_BOLD;
	397 - }
	398 - yp = winy + font->ascent;
	399 + /* Advance the drawing cursor if we've moved to a new c…
	400 + if (code_idx > 0 && idx != shaped.glyphs[code_idx - 1].…
	401 + xp += runewidth;
	402 + cluster_xp = xp;
	403 + cluster_yp = yp;
	404 }
	405
	406 - /* Lookup character index with default font. */
	407 - glyphidx = XftCharIndex(xw.dpy, font->match, rune);
	408 - if (glyphidx) {
	409 + if (shaped.glyphs[code_idx].codepoint != 0) {
	410 + /* If symbol is found, put it into the specs. */
	411 specs[numspecs].font = font->match;
	412 - specs[numspecs].glyph = glyphidx;
	413 - specs[numspecs].x = (short)xp;
	414 - specs[numspecs].y = (short)yp;
	415 - xp += runewidth;
	416 + specs[numspecs].glyph = shaped.glyphs[code_idx]…
	417 + specs[numspecs].x = cluster_xp + (short)(shaped…
	418 + specs[numspecs].y = cluster_yp - (short)(shaped…
	419 + cluster_xp += shaped.positions[code_idx].x_adva…
	420 + cluster_yp += shaped.positions[code_idx].y_adva…
	421 numspecs++;
	422 - continue;
	423 - }
	424 -
	425 - /* Fallback on font cache, search the font cache for ma…
	426 - for (f = 0; f < frclen; f++) {
	427 - glyphidx = XftCharIndex(xw.dpy, frc[f].font, ru…
	428 - /* Everything correct. */
	429 - if (glyphidx && frc[f].flags == frcflags)
	430 - break;
	431 - /* We got a default font for a not found glyph.…
	432 - if (!glyphidx && frc[f].flags == frcflags
	433 - && frc[f].unicodep == rune) {
	434 - break;
	435 + } else {
	436 + /* If it's not found, try to fetch it through t…
	437 + rune = glyphs[idx].u;
	438 + for (f = 0; f < frclen; f++) {
	439 + glyphidx = XftCharIndex(xw.dpy, frc[f].…
	440 + /* Everything correct. */
	441 + if (glyphidx && frc[f].flags == frcflag…
	442 + break;
	443 + /* We got a default font for a not foun…
	444 + if (!glyphidx && frc[f].flags == frcfla…
	445 + && frc[f].unicodep == r…
	446 + break;
	447 + }
	448 }
	449 - }
	450
	451 - /* Nothing was found. Use fontconfig to find matching f…
	452 - if (f >= frclen) {
	453 - if (!font->set)
	454 - font->set = FcFontSort(0, font->pattern,
	455 - 1, 0, &fcres);
	456 - fcsets[0] = font->set;
	457 -
	458 - /*
	459 - * Nothing was found in the cache. Now use
	460 - * some dozen of Fontconfig calls to get the
	461 - * font for one single character.
	462 - *
	463 - * Xft and fontconfig are design failures.
	464 - */
	465 - fcpattern = FcPatternDuplicate(font->pattern);
	466 - fccharset = FcCharSetCreate();
	467 -
	468 - FcCharSetAddChar(fccharset, rune);
	469 - FcPatternAddCharSet(fcpattern, FC_CHARSET,
	470 - fccharset);
	471 - FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
	472 -
	473 - FcConfigSubstitute(0, fcpattern,
	474 - FcMatchPattern);
	475 - FcDefaultSubstitute(fcpattern);
	476 -
	477 - fontpattern = FcFontSetMatch(0, fcsets, 1,
	478 - fcpattern, &fcres);
	479 -
	480 - /* Allocate memory for the new cache entry. */
	481 - if (frclen >= frccap) {
	482 - frccap += 16;
	483 - frc = xrealloc(frc, frccap * sizeof(Fon…
	484 + /* Nothing was found. Use fontconfig to find ma…
	485 + if (f >= frclen) {
	486 + if (!font->set)
	487 + font->set = FcFontSort(0, font-…
	488 + 1, 0, &f…
	489 + fcsets[0] = font->set;
	490 +
	491 + /*
	492 + * Nothing was found in the cache. Now …
	493 + * some dozen of Fontconfig calls to ge…
	494 + * font for one single character.
	495 + *
	496 + * Xft and fontconfig are design failur…
	497 + */
	498 + fcpattern = FcPatternDuplicate(font->pa…
	499 + fccharset = FcCharSetCreate();
	500 +
	501 + FcCharSetAddChar(fccharset, rune);
	502 + FcPatternAddCharSet(fcpattern, FC_CHARS…
	503 + fccharset);
	504 + FcPatternAddBool(fcpattern, FC_SCALABLE…
	505 +
	506 + FcConfigSubstitute(0, fcpattern,
	507 + FcMatchPattern);
	508 + FcDefaultSubstitute(fcpattern);
	509 +
	510 + fontpattern = FcFontSetMatch(0, fcsets,…
	511 + fcpattern, &fcres);
	512 +
	513 + /* Allocate memory for the new cache en…
	514 + if (frclen >= frccap) {
	515 + frccap += 16;
	516 + frc = xrealloc(frc, frccap * si…
	517 + }
	518 +
	519 + frc[frclen].font = XftFontOpenPattern(x…
	520 + fontpattern);
	521 + if (!frc[frclen].font)
	522 + die("XftFontOpenPattern failed …
	523 + strerror(errno));
	524 + frc[frclen].flags = frcflags;
	525 + frc[frclen].unicodep = rune;
	526 +
	527 + glyphidx = XftCharIndex(xw.dpy, frc[frc…
	528 +
	529 + f = frclen;
	530 + frclen++;
	531 +
	532 + FcPatternDestroy(fcpattern);
	533 + FcCharSetDestroy(fccharset);
	534 }
	535
	536 - frc[frclen].font = XftFontOpenPattern(xw.dpy,
	537 - fontpattern);
	538 - if (!frc[frclen].font)
	539 - die("XftFontOpenPattern failed seeking …
	540 - strerror(errno));
	541 - frc[frclen].flags = frcflags;
	542 - frc[frclen].unicodep = rune;
	543 -
	544 - glyphidx = XftCharIndex(xw.dpy, frc[frclen].fon…
	545 -
	546 - f = frclen;
	547 - frclen++;
	548 -
	549 - FcPatternDestroy(fcpattern);
	550 - FcCharSetDestroy(fccharset);
	551 + specs[numspecs].font = frc[f].font;
	552 + specs[numspecs].glyph = glyphidx;
	553 + specs[numspecs].x = (short)xp;
	554 + specs[numspecs].y = (short)yp;
	555 + numspecs++;
	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 + /* Cleanup and get ready for next segment. */
	567 + hbcleanup(&shaped);
	568 return numspecs;
	569 }
	570
	571 void
	572 -xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len,…
	573 +xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len,…
	574 {
	575 - int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
	576 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
	577 width = charlen * win.cw;
	578 Color fg, bg, *temp, revfg, revbg, truefg, truebg;
	579 XRenderColor colfg, colbg;
	580 @@ -1528,23 +1544,26 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *spec…
	581 void
	582 xdrawglyph(Glyph g, int x, int y)
	583 {
	584 int numspecs;
	585 - XftGlyphFontSpec spec;
	586 + XftGlyphFontSpec *specs = xw.specbuf;
	587
	588 - numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
	589 - xdrawglyphfontspecs(&spec, g, numspecs, x, y);
	590 + numspecs = xmakeglyphfontspecs(specs, &g, 1, x, y);
	591 + xdrawglyphfontspecs(specs, g, numspecs, x, y, (g.mode & ATTR_WI…
	592 }
	593
	594 void
	595 -xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
	596 +xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line lin…
	597 {
	598 Color drawcol;
	599
	600 /* remove the old cursor */
	601 if (selected(ox, oy))
	602 og.mode ^= ATTR_REVERSE;
	603 - xdrawglyph(og, ox, oy);
	604 +
	605 + /* Redraw the line where cursor was previously.
	606 + * It will restore the ligatures broken by the cursor. */
	607 + xdrawline(line, 0, oy, len);
	608
	609 if (IS_SET(MODE_HIDE))
	610 return;
	611
	612 @@ -1676,30 +1695,30 @@ xdrawline(Line line, int x1, int y1, int x2)
	613 int i, x, ox, numspecs;
	614 Glyph base, new;
	615 XftGlyphFontSpec *specs = xw.specbuf;
	616
	617 - numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y…
	618 i = ox = 0;
	619 - for (x = x1; x < x2 && i < numspecs; x++) {
	620 + for (x = x1; x < x2; x++) {
	621 new = line[x];
	622 if (new.mode == ATTR_WDUMMY)
	623 continue;
	624 if (selected(x, y1))
	625 new.mode ^= ATTR_REVERSE;
	626 - if (i > 0 && ATTRCMP(base, new)) {
	627 - xdrawglyphfontspecs(specs, base, i, ox, y1);
	628 - specs += i;
	629 - numspecs -= i;
	630 + if ((i > 0) && ATTRCMP(base, new)) {
	631 + numspecs = xmakeglyphfontspecs(specs, &line[ox]…
	632 + xdrawglyphfontspecs(specs, base, numspecs, ox, …
	633 i = 0;
	634 }
	635 if (i == 0) {
	636 ox = x;
	637 base = new;
	638 }
	639 i++;
	640 }
	641 - if (i > 0)
	642 - xdrawglyphfontspecs(specs, base, i, ox, y1);
	643 + if (i > 0) {
	644 + numspecs = xmakeglyphfontspecs(specs, &line[ox], x2 - o…
	645 + xdrawglyphfontspecs(specs, base, numspecs, ox, y1, x2 -…
	646 + }
	647 }
	648
	649 void
	650 xfinishdraw(void)