config.def.h

@@ -265,8 +265,6 @@ static Shortcut shortcuts[] = {
 	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
 	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
 	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
-	{ ShiftMask,            XK_Page_Up,     kscrollup,      {.i = -1} },
-	{ ShiftMask,            XK_Page_Down,   kscrolldown,    {.i = -1} },
 };
 
 /*

st.h

@@ -23,20 +23,18 @@
 
 enum glyph_attribute {
 	ATTR_NULL       = 0,
-	ATTR_SET        = 1 << 0,
-	ATTR_BOLD       = 1 << 1,
-	ATTR_FAINT      = 1 << 2,
-	ATTR_ITALIC     = 1 << 3,
-	ATTR_UNDERLINE  = 1 << 4,
-	ATTR_BLINK      = 1 << 5,
-	ATTR_REVERSE    = 1 << 6,
-	ATTR_INVISIBLE  = 1 << 7,
-	ATTR_STRUCK     = 1 << 8,
-	ATTR_WRAP       = 1 << 9,
-	ATTR_WIDE       = 1 << 10,
-	ATTR_WDUMMY     = 1 << 11,
+	ATTR_BOLD       = 1 << 0,
+	ATTR_FAINT      = 1 << 1,
+	ATTR_ITALIC     = 1 << 2,
+	ATTR_UNDERLINE  = 1 << 3,
+	ATTR_BLINK      = 1 << 4,
+	ATTR_REVERSE    = 1 << 5,
+	ATTR_INVISIBLE  = 1 << 6,
+	ATTR_STRUCK     = 1 << 7,
+	ATTR_WRAP       = 1 << 8,
+	ATTR_WIDE       = 1 << 9,
+	ATTR_WDUMMY     = 1 << 10,
 	ATTR_BOXDRAW    = 1 << 11,
-	ATTR_SELECTED   = 1 << 12,
 	ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
 	ATTR_DIRTYUNDERLINE = 1 << 15,
 };
@@ -94,8 +92,6 @@ void die(const char *, ...);
 void redraw(void);
 void draw(void);
 
-void kscrolldown(const Arg *);
-void kscrollup(const Arg *);
 void printscreen(const Arg *);
 void printsel(const Arg *);
 void sendbreak(const Arg *);
@@ -103,7 +99,6 @@ void toggleprinter(const Arg *);
 
 int tattrset(int);
 void tnew(int, int);
-int tisaltscreen(void);
 void tresize(int, int);
 void tsetdirtattr(int);
 void ttyhangup(void);

x.c

@@ -20,7 +20,6 @@ char *argv0;
 #include "arg.h"
 #include "st.h"
 #include "win.h"
-#include "hb.h"
 
 /* types used in config.h */
 typedef struct {
@@ -168,7 +167,6 @@ typedef struct {
 } DC;
 
 static inline ushort sixd_to_16bit(int);
-static void xresetfontsettings(ushort mode, Font **font, int *frcflags);
 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
 static void xdrawglyph(Glyph, int, int);
@@ -798,7 +796,7 @@ xresize(int col, int row)
 	xclear(0, 0, win.w, win.h);
 
 	/* resize to new width */
-	xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec) * 4);
+	xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
 }
 
 ushort
@@ -1110,9 +1108,6 @@ xunloadfont(Font *f)
 void
 xunloadfonts(void)
 {
-	/* Clear Harfbuzz font cache. */
-	hbunloadfonts();
-
 	/* Free the loaded fonts in the font cache.  */
 	while (frclen > 0)
 		XftFontClose(xw.dpy, frc[--frclen].font);
@@ -1244,7 +1239,7 @@ xinit(int cols, int rows)
 	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
 
 	/* font spec buffer */
-	xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec) * 4);
+	xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
 
 	/* Xft rendering context */
 	xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
@@ -1298,22 +1293,6 @@ xinit(int cols, int rows)
 		xsel.xtarget = XA_STRING;
 }
 
-void
-xresetfontsettings(ushort mode, Font **font, int *frcflags)
-{
-	*font = &dc.font;
-	if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
-		*font = &dc.ibfont;
-		*frcflags = FRC_ITALICBOLD;
-	} else if (mode & ATTR_ITALIC) {
-		*font = &dc.ifont;
-		*frcflags = FRC_ITALIC;
-	} else if (mode & ATTR_BOLD) {
-		*font = &dc.bfont;
-		*frcflags = FRC_BOLD;
-	}
-}
-
 int
 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
 {
@@ -1328,65 +1307,49 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
 	FcPattern *fcpattern, *fontpattern;
 	FcFontSet *fcsets[] = { NULL };
 	FcCharSet *fccharset;
-	int i, f, length = 0, start = 0, numspecs = 0;
-  float cluster_xp = xp, cluster_yp = yp;
-	HbTransformData shaped = { 0 };
-
-	/* Initial values. */
-	mode = prevmode = glyphs[0].mode;
-	xresetfontsettings(mode, &font, &frcflags);
+	int i, f, numspecs = 0;
 
 	for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
+		/* Fetch rune and mode for current glyph. */
+		rune = glyphs[i].u;
 		mode = glyphs[i].mode;
 
 		/* Skip dummy wide-character spacing. */
-		if (mode & ATTR_WDUMMY && i < (len - 1))
+		if (mode == ATTR_WDUMMY)
 			continue;
 
-		if (
-			prevmode != mode
-			|| ATTRCMP(glyphs[start], glyphs[i])
-			|| selected(x + i, y) != selected(x + start, y)
-			|| i == (len - 1)
-		) {
-			/* Handle 1-character wide segments and end of line */
-			length = i - start;
-			if (i == start) {
-				length = 1;
-			} else if (i == (len - 1)) {
-				length = (i - start + 1);
+		/* Determine font for glyph if different from previous glyph. */
+		if (prevmode != mode) {
+			prevmode = mode;
+			font = &dc.font;
+			frcflags = FRC_NORMAL;
+			runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
+			if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
+				font = &dc.ibfont;
+				frcflags = FRC_ITALICBOLD;
+			} else if (mode & ATTR_ITALIC) {
+				font = &dc.ifont;
+				frcflags = FRC_ITALIC;
+			} else if (mode & ATTR_BOLD) {
+				font = &dc.bfont;
+				frcflags = FRC_BOLD;
+			}
+			yp = winy + font->ascent;
 		}
 
-			/* Shape the segment. */
-			hbtransform(&shaped, font->match, glyphs, start, length);
-			runewidth = win.cw * ((glyphs[start].mode & ATTR_WIDE) ? 2.0f : 1.0f);
-			cluster_xp = xp; cluster_yp = yp;
-			for (int code_idx = 0; code_idx < shaped.count; code_idx++) {
-				int idx = shaped.glyphs[code_idx].cluster;
-
-				if (glyphs[start + idx].mode & ATTR_WDUMMY)
-					continue;
-
-				/* Advance the drawing cursor if we've moved to a new cluster */
-				if (code_idx > 0 && idx != shaped.glyphs[code_idx - 1].cluster) {
-					xp += runewidth;
-					cluster_xp = xp;
-					cluster_yp = yp;
-					runewidth = win.cw * ((glyphs[start + idx].mode & ATTR_WIDE) ? 2.0f : 1.0f);
-				}
-
-				if (shaped.glyphs[code_idx].codepoint != 0) {
-					/* If symbol is found, put it into the specs. */
+		/* Lookup character index with default font. */
+		glyphidx = XftCharIndex(xw.dpy, font->match, rune);
+		if (glyphidx) {
 			specs[numspecs].font = font->match;
-					specs[numspecs].glyph = shaped.glyphs[code_idx].codepoint;
-					specs[numspecs].x = cluster_xp + (short)(shaped.positions[code_idx].x_offset / 64.);
-					specs[numspecs].y = cluster_yp - (short)(shaped.positions[code_idx].y_offset / 64.);
-					cluster_xp += shaped.positions[code_idx].x_advance / 64.;
-					cluster_yp += shaped.positions[code_idx].y_advance / 64.;
+			specs[numspecs].glyph = glyphidx;
+			specs[numspecs].x = (short)xp;
+			specs[numspecs].y = (short)yp;
+			xp += runewidth;
 			numspecs++;
-				} else {
-					/* If it's not found, try to fetch it through the font cache. */
-					rune = glyphs[start + idx].u;
+			continue;
+		}
+
+		/* Fallback on font cache, search the font cache for match. */
 		for (f = 0; f < frclen; f++) {
 			glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
 			/* Everything correct. */
@@ -1455,22 +1418,9 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
 		specs[numspecs].glyph = glyphidx;
 		specs[numspecs].x = (short)xp;
 		specs[numspecs].y = (short)yp;
+		xp += runewidth;
 		numspecs++;
 	}
-			}
-
-			/* Cleanup and get ready for next segment. */
-			hbcleanup(&shaped);
-			start = i;
-
-			/* Determine font for glyph if different from previous glyph. */
-			if (prevmode != mode) {
-				prevmode = mode;
-				xresetfontsettings(mode, &font, &frcflags);
-				yp = winy + font->ascent;
-			}
-		}
-	}
 
 	return numspecs;
 }
@@ -2012,7 +1962,7 @@ xdrawglyph(Glyph g, int x, int y)
 }
 
 void
-xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int len)
+xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
 {
 	Color drawcol;
 	XRenderColor colbg;
@@ -2020,10 +1970,7 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int le
 	/* remove the old cursor */
 	if (selected(ox, oy))
 		og.mode ^= ATTR_REVERSE;
-
-	/* Redraw the line where cursor was previously.
-	 * It will restore the ligatures broken by the cursor. */
-	xdrawline(line, 0, oy, len);
+	xdrawglyph(og, ox, oy);
 
 	if (IS_SET(MODE_HIDE))
 		return;
@@ -2163,16 +2110,18 @@ xdrawline(Line line, int x1, int y1, int x2)
 	Glyph base, new;
 	XftGlyphFontSpec *specs = xw.specbuf;
 
+	numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
 	i = ox = 0;
-	for (x = x1; x < x2; x++) {
+	for (x = x1; x < x2 && i < numspecs; x++) {
 		new = line[x];
 		if (new.mode == ATTR_WDUMMY)
 			continue;
 		if (selected(x, y1))
 			new.mode ^= ATTR_REVERSE;
-		if ((i > 0) && ATTRCMP(base, new)) {
-			numspecs = xmakeglyphfontspecs(specs, &line[ox], x - ox, ox, y1);
-			xdrawglyphfontspecs(specs, base, numspecs, ox, y1);
+		if (i > 0 && ATTRCMP(base, new)) {
+			xdrawglyphfontspecs(specs, base, i, ox, y1);
+			specs += i;
+			numspecs -= i;
 			i = 0;
 		}
 		if (i == 0) {
@@ -2181,10 +2130,8 @@ xdrawline(Line line, int x1, int y1, int x2)
 		}
 		i++;
 	}
-	if (i > 0) {
-		numspecs = xmakeglyphfontspecs(specs, &line[ox], x2 - ox, ox, y1);
-		xdrawglyphfontspecs(specs, base, numspecs, ox, y1);
-	}
+	if (i > 0)
+		xdrawglyphfontspecs(specs, base, i, ox, y1);
 }
 
 void