Updated to 0.8.3 with previous config + mouse scrollback

6 files changed, 1059 insertions, 0 deletions

diff --git a/patches/ligature-scrollback.diff b/patches/ligature-scrollback.diff
new file mode 100644
index 0000000..ed7d36f
--- /dev/null
+++ b/patches/ligature-scrollback.diff
@@ -0,0 +1,307 @@
+diff --git a/Makefile b/Makefile
+index 470ac86..38240da 100644
+--- a/Makefile
++++ b/Makefile
+@@ -4,7 +4,7 @@
+ 
+ include config.mk
+ 
+-SRC = st.c x.c
++SRC = st.c x.c hb.c
+ OBJ = $(SRC:.c=.o)
+ 
+ all: options st
+@@ -22,7 +22,8 @@ config.h:
+ 	$(CC) $(STCFLAGS) -c $<
+ 
+ st.o: config.h st.h win.h
+-x.o: arg.h config.h st.h win.h
++x.o: arg.h config.h st.h win.h hb.h
++hb.o: st.h
+ 
+ $(OBJ): config.h config.mk
+ 
+diff --git a/config.mk b/config.mk
+index beafc35..3df5c83 100644
+--- a/config.mk
++++ b/config.mk
+@@ -15,10 +15,12 @@ PKG_CONFIG = pkg-config
+ # includes and libs
+ INCS = -I$(X11INC) \
+        `$(PKG_CONFIG) --cflags fontconfig` \
+-       `$(PKG_CONFIG) --cflags freetype2`
++       `$(PKG_CONFIG) --cflags freetype2` \
++       `$(PKG_CONFIG) --cflags harfbuzz`
+ LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
+        `$(PKG_CONFIG) --libs fontconfig` \
+-       `$(PKG_CONFIG) --libs freetype2`
++       `$(PKG_CONFIG) --libs freetype2` \
++       `$(PKG_CONFIG) --libs harfbuzz`
+ 
+ # flags
+ STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
+diff --git a/hb.c b/hb.c
+new file mode 100644
+index 0000000..7df2828
+--- /dev/null
++++ b/hb.c
+@@ -0,0 +1,136 @@
++#include <stdlib.h>
++#include <stdio.h>
++#include <math.h>
++#include <X11/Xft/Xft.h>
++#include <hb.h>
++#include <hb-ft.h>
++
++#include "st.h"
++
++void hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length);
++hb_font_t *hbfindfont(XftFont *match);
++
++typedef struct {
++	XftFont *match;
++	hb_font_t *font;
++} HbFontMatch;
++
++static int hbfontslen = 0;
++static HbFontMatch *hbfontcache = NULL;
++
++void
++hbunloadfonts()
++{
++	for (int i = 0; i < hbfontslen; i++) {
++		hb_font_destroy(hbfontcache[i].font);
++		XftUnlockFace(hbfontcache[i].match);
++	}
++
++	if (hbfontcache != NULL) {
++		free(hbfontcache);
++		hbfontcache = NULL;
++	}
++	hbfontslen = 0;
++}
++
++hb_font_t *
++hbfindfont(XftFont *match)
++{
++	for (int i = 0; i < hbfontslen; i++) {
++		if (hbfontcache[i].match == match)
++			return hbfontcache[i].font;
++	}
++
++	/* Font not found in cache, caching it now. */
++	hbfontcache = realloc(hbfontcache, sizeof(HbFontMatch) * (hbfontslen + 1));
++	FT_Face face = XftLockFace(match);
++	hb_font_t *font = hb_ft_font_create(face, NULL);
++	if (font == NULL)
++		die("Failed to load Harfbuzz font.");
++
++	hbfontcache[hbfontslen].match = match;
++	hbfontcache[hbfontslen].font = font;
++	hbfontslen += 1;
++
++	return font;
++}
++
++void
++hbtransform(XftGlyphFontSpec *specs, const Glyph *glyphs, size_t len, int x, int y)
++{
++	int start = 0, length = 1, gstart = 0;
++	hb_codepoint_t *codepoints = calloc(len, sizeof(hb_codepoint_t));
++
++	for (int idx = 1, specidx = 1; idx < len; idx++) {
++		if (glyphs[idx].mode & ATTR_WDUMMY) {
++			length += 1;
++			continue;
++		}
++
++		if (specs[specidx].font != specs[start].font || ATTRCMP(glyphs[gstart], glyphs[idx]) || selected(x + idx, y) != selected(x + gstart, y)) {
++			hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
++
++			/* Reset the sequence. */
++			length = 1;
++			start = specidx;
++			gstart = idx;
++		} else {
++			length += 1;
++		}
++
++		specidx++;
++	}
++
++	/* EOL. */
++	hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
++
++	/* Apply the transformation to glyph specs. */
++	for (int i = 0, specidx = 0; i < len; i++) {
++		if (glyphs[i].mode & ATTR_WDUMMY)
++			continue;
++
++		if (codepoints[i] != specs[specidx].glyph)
++			((Glyph *)glyphs)[i].mode |= ATTR_LIGA;
++
++		specs[specidx++].glyph = codepoints[i];
++	}
++
++	free(codepoints);
++}
++
++void
++hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length)
++{
++	hb_font_t *font = hbfindfont(xfont);
++	if (font == NULL)
++		return;
++
++	Rune rune;
++	ushort mode = USHRT_MAX;
++	hb_buffer_t *buffer = hb_buffer_create();
++	hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
++
++	/* Fill buffer with codepoints. */
++	for (int i = start; i < (start+length); i++) {
++		rune = string[i].u;
++		mode = string[i].mode;
++		if (mode & ATTR_WDUMMY)
++			rune = 0x0020;
++		hb_buffer_add_codepoints(buffer, &rune, 1, 0, 1);
++	}
++
++	/* Shape the segment. */
++	hb_shape(font, buffer, NULL, 0);
++
++	/* Get new glyph info. */
++	hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, NULL);
++
++	/* Write new codepoints. */
++	for (int i = 0; i < length; i++) {
++		hb_codepoint_t gid = info[i].codepoint;
++		codepoints[start+i] = gid;
++	}
++
++	/* Cleanup. */
++	hb_buffer_destroy(buffer);
++}
+diff --git a/hb.h b/hb.h
+new file mode 100644
+index 0000000..b3e02d0
+--- /dev/null
++++ b/hb.h
+@@ -0,0 +1,7 @@
++#include <X11/Xft/Xft.h>
++#include <hb.h>
++#include <hb-ft.h>
++
++void hbunloadfonts();
++void hbtransform(XftGlyphFontSpec *, const Glyph *, size_t, int, int);
++
+diff --git a/st.c b/st.c
+index 641edc0..14a0b66 100644
+--- a/st.c
++++ b/st.c
+@@ -2670,7 +2670,8 @@ draw(void)
+ 	drawregion(0, 0, term.col, term.row);
+ 	if (term.scr == 0)
+ 		xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
+-				term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
++				term.ocx, term.ocy, term.line[term.ocy][term.ocx],
++				term.line[term.ocy], term.col);
+ 	term.ocx = cx;
+ 	term.ocy = term.c.y;
+ 	xfinishdraw();
+diff --git a/st.h b/st.h
+index b9a4eeb..b49b84a 100644
+--- a/st.h
++++ b/st.h
+@@ -11,7 +11,8 @@
+ #define DIVCEIL(n, d)		(((n) + ((d) - 1)) / (d))
+ #define DEFAULT(a, b)		(a) = (a) ? (a) : (b)
+ #define LIMIT(x, a, b)		(x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
+-#define ATTRCMP(a, b)		((a).mode != (b).mode || (a).fg != (b).fg || \
++#define ATTRCMP(a, b)		(((a).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) != ((b).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) || \
++				(a).fg != (b).fg || \
+ 				(a).bg != (b).bg)
+ #define TIMEDIFF(t1, t2)	((t1.tv_sec-t2.tv_sec)*1000 + \
+ 				(t1.tv_nsec-t2.tv_nsec)/1E6)
+@@ -33,6 +34,7 @@ enum glyph_attribute {
+ 	ATTR_WRAP       = 1 << 8,
+ 	ATTR_WIDE       = 1 << 9,
+ 	ATTR_WDUMMY     = 1 << 10,
++	ATTR_LIGA       = 1 << 11,
+ 	ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
+ };
+ 
+diff --git a/win.h b/win.h
+index a6ef1b9..bc0d180 100644
+--- a/win.h
++++ b/win.h
+@@ -25,7 +25,7 @@ enum win_mode {
+ 
+ void xbell(void);
+ void xclipcopy(void);
+-void xdrawcursor(int, int, Glyph, int, int, Glyph);
++void xdrawcursor(int, int, Glyph, int, int, Glyph, Line, int);
+ void xdrawline(Line, int, int, int);
+ void xfinishdraw(void);
+ void xloadcols(void);
+diff --git a/x.c b/x.c
+index e5f1737..3334a83 100644
+--- a/x.c
++++ b/x.c
+@@ -19,6 +19,7 @@ char *argv0;
+ #include "arg.h"
+ #include "st.h"
+ #include "win.h"
++#include "hb.h"
+ 
+ /* types used in config.h */
+ typedef struct {
+@@ -1031,6 +1032,9 @@ 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);
+@@ -1229,7 +1233,7 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
+ 		mode = glyphs[i].mode;
+ 
+ 		/* Skip dummy wide-character spacing. */
+-		if (mode == ATTR_WDUMMY)
++		if (mode & ATTR_WDUMMY)
+ 			continue;
+ 
+ 		/* Determine font for glyph if different from previous glyph. */
+@@ -1336,6 +1340,9 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
+ 		numspecs++;
+ 	}
+ 
++	/* Harfbuzz transformation for ligatures. */
++	hbtransform(specs, glyphs, len, x, y);
++
+ 	return numspecs;
+ }
+ 
+@@ -1485,14 +1492,17 @@ xdrawglyph(Glyph g, int x, int y)
+ }
+ 
+ void
+-xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
++xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int len)
+ {
+ 	Color drawcol;
+ 
+ 	/* remove the old cursor */
+ 	if (selected(ox, oy))
+ 		og.mode ^= ATTR_REVERSE;
+-	xdrawglyph(og, ox, oy);
++
++	/* Redraw the line where cursor was previously.
++	 * It will restore the ligatures broken by the cursor. */
++	xdrawline(line, 0, oy, len);
+ 
+ 	if (IS_SET(MODE_HIDE))
+ 		return;
diff --git a/patches/ligature.diff b/patches/ligature.diff
new file mode 100644
index 0000000..ebf6bd2
--- /dev/null
+++ b/patches/ligature.diff
@@ -0,0 +1,307 @@
+diff --git a/Makefile b/Makefile
+index 470ac86..38240da 100644
+--- a/Makefile
++++ b/Makefile
+@@ -4,7 +4,7 @@
+ 
+ include config.mk
+ 
+-SRC = st.c x.c
++SRC = st.c x.c hb.c
+ OBJ = $(SRC:.c=.o)
+ 
+ all: options st
+@@ -22,7 +22,8 @@ config.h:
+ 	$(CC) $(STCFLAGS) -c $<
+ 
+ st.o: config.h st.h win.h
+-x.o: arg.h config.h st.h win.h
++x.o: arg.h config.h st.h win.h hb.h
++hb.o: st.h
+ 
+ $(OBJ): config.h config.mk
+ 
+diff --git a/config.mk b/config.mk
+index beafc35..3df5c83 100644
+--- a/config.mk
++++ b/config.mk
+@@ -15,10 +15,12 @@ PKG_CONFIG = pkg-config
+ # includes and libs
+ INCS = -I$(X11INC) \
+        `$(PKG_CONFIG) --cflags fontconfig` \
+-       `$(PKG_CONFIG) --cflags freetype2`
++       `$(PKG_CONFIG) --cflags freetype2` \
++       `$(PKG_CONFIG) --cflags harfbuzz`
+ LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
+        `$(PKG_CONFIG) --libs fontconfig` \
+-       `$(PKG_CONFIG) --libs freetype2`
++       `$(PKG_CONFIG) --libs freetype2` \
++       `$(PKG_CONFIG) --libs harfbuzz`
+ 
+ # flags
+ STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
+diff --git a/hb.c b/hb.c
+new file mode 100644
+index 0000000..7df2828
+--- /dev/null
++++ b/hb.c
+@@ -0,0 +1,136 @@
++#include <stdlib.h>
++#include <stdio.h>
++#include <math.h>
++#include <X11/Xft/Xft.h>
++#include <hb.h>
++#include <hb-ft.h>
++
++#include "st.h"
++
++void hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length);
++hb_font_t *hbfindfont(XftFont *match);
++
++typedef struct {
++	XftFont *match;
++	hb_font_t *font;
++} HbFontMatch;
++
++static int hbfontslen = 0;
++static HbFontMatch *hbfontcache = NULL;
++
++void
++hbunloadfonts()
++{
++	for (int i = 0; i < hbfontslen; i++) {
++		hb_font_destroy(hbfontcache[i].font);
++		XftUnlockFace(hbfontcache[i].match);
++	}
++
++	if (hbfontcache != NULL) {
++		free(hbfontcache);
++		hbfontcache = NULL;
++	}
++	hbfontslen = 0;
++}
++
++hb_font_t *
++hbfindfont(XftFont *match)
++{
++	for (int i = 0; i < hbfontslen; i++) {
++		if (hbfontcache[i].match == match)
++			return hbfontcache[i].font;
++	}
++
++	/* Font not found in cache, caching it now. */
++	hbfontcache = realloc(hbfontcache, sizeof(HbFontMatch) * (hbfontslen + 1));
++	FT_Face face = XftLockFace(match);
++	hb_font_t *font = hb_ft_font_create(face, NULL);
++	if (font == NULL)
++		die("Failed to load Harfbuzz font.");
++
++	hbfontcache[hbfontslen].match = match;
++	hbfontcache[hbfontslen].font = font;
++	hbfontslen += 1;
++
++	return font;
++}
++
++void
++hbtransform(XftGlyphFontSpec *specs, const Glyph *glyphs, size_t len, int x, int y)
++{
++	int start = 0, length = 1, gstart = 0;
++	hb_codepoint_t *codepoints = calloc(len, sizeof(hb_codepoint_t));
++
++	for (int idx = 1, specidx = 1; idx < len; idx++) {
++		if (glyphs[idx].mode & ATTR_WDUMMY) {
++			length += 1;
++			continue;
++		}
++
++		if (specs[specidx].font != specs[start].font || ATTRCMP(glyphs[gstart], glyphs[idx]) || selected(x + idx, y) != selected(x + gstart, y)) {
++			hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
++
++			/* Reset the sequence. */
++			length = 1;
++			start = specidx;
++			gstart = idx;
++		} else {
++			length += 1;
++		}
++
++		specidx++;
++	}
++
++	/* EOL. */
++	hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
++
++	/* Apply the transformation to glyph specs. */
++	for (int i = 0, specidx = 0; i < len; i++) {
++		if (glyphs[i].mode & ATTR_WDUMMY)
++			continue;
++
++		if (codepoints[i] != specs[specidx].glyph)
++			((Glyph *)glyphs)[i].mode |= ATTR_LIGA;
++
++		specs[specidx++].glyph = codepoints[i];
++	}
++
++	free(codepoints);
++}
++
++void
++hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length)
++{
++	hb_font_t *font = hbfindfont(xfont);
++	if (font == NULL)
++		return;
++
++	Rune rune;
++	ushort mode = USHRT_MAX;
++	hb_buffer_t *buffer = hb_buffer_create();
++	hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
++
++	/* Fill buffer with codepoints. */
++	for (int i = start; i < (start+length); i++) {
++		rune = string[i].u;
++		mode = string[i].mode;
++		if (mode & ATTR_WDUMMY)
++			rune = 0x0020;
++		hb_buffer_add_codepoints(buffer, &rune, 1, 0, 1);
++	}
++
++	/* Shape the segment. */
++	hb_shape(font, buffer, NULL, 0);
++
++	/* Get new glyph info. */
++	hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, NULL);
++
++	/* Write new codepoints. */
++	for (int i = 0; i < length; i++) {
++		hb_codepoint_t gid = info[i].codepoint;
++		codepoints[start+i] = gid;
++	}
++
++	/* Cleanup. */
++	hb_buffer_destroy(buffer);
++}
+diff --git a/hb.h b/hb.h
+new file mode 100644
+index 0000000..b3e02d0
+--- /dev/null
++++ b/hb.h
+@@ -0,0 +1,7 @@
++#include <X11/Xft/Xft.h>
++#include <hb.h>
++#include <hb-ft.h>
++
++void hbunloadfonts();
++void hbtransform(XftGlyphFontSpec *, const Glyph *, size_t, int, int);
++
+diff --git a/st.c b/st.c
+index 2bf133f..747f7b4 100644
+--- a/st.c
++++ b/st.c
+@@ -2599,7 +2599,8 @@ draw(void)
+ 
+ 	drawregion(0, 0, term.col, term.row);
+ 	xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
+-			term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
++			term.ocx, term.ocy, term.line[term.ocy][term.ocx],
++			term.line[term.ocy], term.col);
+ 	term.ocx = cx;
+ 	term.ocy = term.c.y;
+ 	xfinishdraw();
+diff --git a/st.h b/st.h
+index d978458..c9b279b 100644
+--- a/st.h
++++ b/st.h
+@@ -11,7 +11,8 @@
+ #define DIVCEIL(n, d)		(((n) + ((d) - 1)) / (d))
+ #define DEFAULT(a, b)		(a) = (a) ? (a) : (b)
+ #define LIMIT(x, a, b)		(x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
+-#define ATTRCMP(a, b)		((a).mode != (b).mode || (a).fg != (b).fg || \
++#define ATTRCMP(a, b)		(((a).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) != ((b).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) || \
++				(a).fg != (b).fg || \
+ 				(a).bg != (b).bg)
+ #define TIMEDIFF(t1, t2)	((t1.tv_sec-t2.tv_sec)*1000 + \
+ 				(t1.tv_nsec-t2.tv_nsec)/1E6)
+@@ -33,6 +34,7 @@ enum glyph_attribute {
+ 	ATTR_WRAP       = 1 << 8,
+ 	ATTR_WIDE       = 1 << 9,
+ 	ATTR_WDUMMY     = 1 << 10,
++	ATTR_LIGA       = 1 << 11,
+ 	ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
+ };
+ 
+diff --git a/win.h b/win.h
+index a6ef1b9..bc0d180 100644
+--- a/win.h
++++ b/win.h
+@@ -25,7 +25,7 @@ enum win_mode {
+ 
+ void xbell(void);
+ void xclipcopy(void);
+-void xdrawcursor(int, int, Glyph, int, int, Glyph);
++void xdrawcursor(int, int, Glyph, int, int, Glyph, Line, int);
+ void xdrawline(Line, int, int, int);
+ void xfinishdraw(void);
+ void xloadcols(void);
+diff --git a/x.c b/x.c
+index e5f1737..3334a83 100644
+--- a/x.c
++++ b/x.c
+@@ -19,6 +19,7 @@ char *argv0;
+ #include "arg.h"
+ #include "st.h"
+ #include "win.h"
++#include "hb.h"
+ 
+ /* types used in config.h */
+ typedef struct {
+@@ -1031,6 +1032,9 @@ 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);
+@@ -1229,7 +1233,7 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
+ 		mode = glyphs[i].mode;
+ 
+ 		/* Skip dummy wide-character spacing. */
+-		if (mode == ATTR_WDUMMY)
++		if (mode & ATTR_WDUMMY)
+ 			continue;
+ 
+ 		/* Determine font for glyph if different from previous glyph. */
+@@ -1336,6 +1340,9 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
+ 		numspecs++;
+ 	}
+ 
++	/* Harfbuzz transformation for ligatures. */
++	hbtransform(specs, glyphs, len, x, y);
++
+ 	return numspecs;
+ }
+ 
+@@ -1485,14 +1492,17 @@ xdrawglyph(Glyph g, int x, int y)
+ }
+ 
+ void
+-xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
++xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int len)
+ {
+ 	Color drawcol;
+ 
+ 	/* remove the old cursor */
+ 	if (selected(ox, oy))
+ 		og.mode ^= ATTR_REVERSE;
+-	xdrawglyph(og, ox, oy);
++
++	/* Redraw the line where cursor was previously.
++	 * It will restore the ligatures broken by the cursor. */
++	xdrawline(line, 0, oy, len);
+ 
+ 	if (IS_SET(MODE_HIDE))
+ 		return;
diff --git a/patches/no_bold_colors.diff b/patches/no_bold_colors.diff
new file mode 100644
index 0000000..006b847
--- /dev/null
+++ b/patches/no_bold_colors.diff
@@ -0,0 +1,13 @@
+diff --git a/x.c b/x.c
+index fbfd350..110f3cc 100644
+--- a/x.c
++++ b/x.c
+@@ -1158,7 +1158,7 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
+ 
+ 	/* Change basic system colors [0-7] to bright system colors [8-15] */
+ 	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
+-		fg = &dc.col[base.fg + 8];
++		fg = &dc.col[base.fg];
+ 
+ 	if (IS_SET(MODE_REVERSE)) {
+ 		if (fg == &dc.col[defaultfg]) {
diff --git a/patches/scrollback-mouse.diff b/patches/scrollback-mouse.diff
new file mode 100644
index 0000000..49eba8e
--- /dev/null
+++ b/patches/scrollback-mouse.diff
@@ -0,0 +1,13 @@
+diff --git a/config.def.h b/config.def.h
+index ec1b576..4b3bf15 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -163,6 +163,8 @@ static uint forcemousemod = ShiftMask;
+  */
+ static MouseShortcut mshortcuts[] = {
+ 	/* mask                 button   function        argument       release */
++	{ ShiftMask,            Button4, kscrollup,      {.i = 1} },
++	{ ShiftMask,            Button5, kscrolldown,    {.i = 1} },
+ 	{ XK_ANY_MOD,           Button2, selpaste,       {.i = 0},      1 },
+ 	{ XK_ANY_MOD,           Button4, ttysend,        {.s = "\031"} },
+ 	{ XK_ANY_MOD,           Button5, ttysend,        {.s = "\005"} },
diff --git a/patches/scrollback.diff b/patches/scrollback.diff
new file mode 100644
index 0000000..e72999c
--- /dev/null
+++ b/patches/scrollback.diff
@@ -0,0 +1,351 @@
+diff --git a/config.def.h b/config.def.h
+index 0895a1f..eef24df 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -188,6 +188,8 @@ 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} },
+ };
+ 
+ /*
+diff --git a/st.c b/st.c
+index 0ce6ac2..641edc0 100644
+--- a/st.c
++++ b/st.c
+@@ -35,6 +35,7 @@
+ #define ESC_ARG_SIZ   16
+ #define STR_BUF_SIZ   ESC_BUF_SIZ
+ #define STR_ARG_SIZ   ESC_ARG_SIZ
++#define HISTSIZE      2000
+ 
+ /* macros */
+ #define IS_SET(flag)		((term.mode & (flag)) != 0)
+@@ -42,6 +43,9 @@
+ #define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
+ #define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
+ #define ISDELIM(u)		(u && wcschr(worddelimiters, u))
++#define TLINE(y)		((y) < term.scr ? term.hist[((y) + term.histi - \
++				term.scr + HISTSIZE + 1) % HISTSIZE] : \
++				term.line[(y) - term.scr])
+ 
+ enum term_mode {
+ 	MODE_WRAP        = 1 << 0,
+@@ -117,6 +121,9 @@ typedef struct {
+ 	int col;      /* nb col */
+ 	Line *line;   /* screen */
+ 	Line *alt;    /* alternate screen */
++	Line hist[HISTSIZE]; /* history buffer */
++	int histi;    /* history index */
++	int scr;      /* scroll back */
+ 	int *dirty;   /* dirtyness of lines */
+ 	TCursor c;    /* cursor */
+ 	int ocx;      /* old cursor col */
+@@ -185,8 +192,8 @@ static void tnewline(int);
+ static void tputtab(int);
+ static void tputc(Rune);
+ static void treset(void);
+-static void tscrollup(int, int);
+-static void tscrolldown(int, int);
++static void tscrollup(int, int, int);
++static void tscrolldown(int, int, int);
+ static void tsetattr(int *, int);
+ static void tsetchar(Rune, Glyph *, int, int);
+ static void tsetdirt(int, int);
+@@ -415,10 +422,10 @@ tlinelen(int y)
+ {
+ 	int i = term.col;
+ 
+-	if (term.line[y][i - 1].mode & ATTR_WRAP)
++	if (TLINE(y)[i - 1].mode & ATTR_WRAP)
+ 		return i;
+ 
+-	while (i > 0 && term.line[y][i - 1].u == ' ')
++	while (i > 0 && TLINE(y)[i - 1].u == ' ')
+ 		--i;
+ 
+ 	return i;
+@@ -527,7 +534,7 @@ selsnap(int *x, int *y, int direction)
+ 		 * Snap around if the word wraps around at the end or
+ 		 * beginning of a line.
+ 		 */
+-		prevgp = &term.line[*y][*x];
++		prevgp = &TLINE(*y)[*x];
+ 		prevdelim = ISDELIM(prevgp->u);
+ 		for (;;) {
+ 			newx = *x + direction;
+@@ -542,14 +549,14 @@ selsnap(int *x, int *y, int direction)
+ 					yt = *y, xt = *x;
+ 				else
+ 					yt = newy, xt = newx;
+-				if (!(term.line[yt][xt].mode & ATTR_WRAP))
++				if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
+ 					break;
+ 			}
+ 
+ 			if (newx >= tlinelen(newy))
+ 				break;
+ 
+-			gp = &term.line[newy][newx];
++			gp = &TLINE(newy)[newx];
+ 			delim = ISDELIM(gp->u);
+ 			if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
+ 					|| (delim && gp->u != prevgp->u)))
+@@ -570,14 +577,14 @@ selsnap(int *x, int *y, int direction)
+ 		*x = (direction < 0) ? 0 : term.col - 1;
+ 		if (direction < 0) {
+ 			for (; *y > 0; *y += direction) {
+-				if (!(term.line[*y-1][term.col-1].mode
++				if (!(TLINE(*y-1)[term.col-1].mode
+ 						& ATTR_WRAP)) {
+ 					break;
+ 				}
+ 			}
+ 		} else if (direction > 0) {
+ 			for (; *y < term.row-1; *y += direction) {
+-				if (!(term.line[*y][term.col-1].mode
++				if (!(TLINE(*y)[term.col-1].mode
+ 						& ATTR_WRAP)) {
+ 					break;
+ 				}
+@@ -608,13 +615,13 @@ getsel(void)
+ 		}
+ 
+ 		if (sel.type == SEL_RECTANGULAR) {
+-			gp = &term.line[y][sel.nb.x];
++			gp = &TLINE(y)[sel.nb.x];
+ 			lastx = sel.ne.x;
+ 		} else {
+-			gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
++			gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
+ 			lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
+ 		}
+-		last = &term.line[y][MIN(lastx, linelen-1)];
++		last = &TLINE(y)[MIN(lastx, linelen-1)];
+ 		while (last >= gp && last->u == ' ')
+ 			--last;
+ 
+@@ -849,6 +856,9 @@ void
+ ttywrite(const char *s, size_t n, int may_echo)
+ {
+ 	const char *next;
++	Arg arg = (Arg) { .i = term.scr };
++
++	kscrolldown(&arg);
+ 
+ 	if (may_echo && IS_SET(MODE_ECHO))
+ 		twrite(s, n, 1);
+@@ -1060,13 +1070,53 @@ tswapscreen(void)
+ }
+ 
+ void
+-tscrolldown(int orig, int n)
++kscrolldown(const Arg* a)
++{
++	int n = a->i;
++
++	if (n < 0)
++		n = term.row + n;
++
++	if (n > term.scr)
++		n = term.scr;
++
++	if (term.scr > 0) {
++		term.scr -= n;
++		selscroll(0, -n);
++		tfulldirt();
++	}
++}
++
++void
++kscrollup(const Arg* a)
++{
++	int n = a->i;
++
++	if (n < 0)
++		n = term.row + n;
++
++	if (term.scr <= HISTSIZE-n) {
++		term.scr += n;
++		selscroll(0, n);
++		tfulldirt();
++	}
++}
++
++void
++tscrolldown(int orig, int n, int copyhist)
+ {
+ 	int i;
+ 	Line temp;
+ 
+ 	LIMIT(n, 0, term.bot-orig+1);
+ 
++	if (copyhist) {
++		term.histi = (term.histi - 1 + HISTSIZE) % HISTSIZE;
++		temp = term.hist[term.histi];
++		term.hist[term.histi] = term.line[term.bot];
++		term.line[term.bot] = temp;
++	}
++
+ 	tsetdirt(orig, term.bot-n);
+ 	tclearregion(0, term.bot-n+1, term.col-1, term.bot);
+ 
+@@ -1076,17 +1126,28 @@ tscrolldown(int orig, int n)
+ 		term.line[i-n] = temp;
+ 	}
+ 
+-	selscroll(orig, n);
++	if (term.scr == 0)
++		selscroll(orig, n);
+ }
+ 
+ void
+-tscrollup(int orig, int n)
++tscrollup(int orig, int n, int copyhist)
+ {
+ 	int i;
+ 	Line temp;
+ 
+ 	LIMIT(n, 0, term.bot-orig+1);
+ 
++	if (copyhist) {
++		term.histi = (term.histi + 1) % HISTSIZE;
++		temp = term.hist[term.histi];
++		term.hist[term.histi] = term.line[orig];
++		term.line[orig] = temp;
++	}
++
++	if (term.scr > 0 && term.scr < HISTSIZE)
++		term.scr = MIN(term.scr + n, HISTSIZE-1);
++
+ 	tclearregion(0, orig, term.col-1, orig+n-1);
+ 	tsetdirt(orig+n, term.bot);
+ 
+@@ -1096,7 +1157,8 @@ tscrollup(int orig, int n)
+ 		term.line[i+n] = temp;
+ 	}
+ 
+-	selscroll(orig, -n);
++	if (term.scr == 0)
++		selscroll(orig, -n);
+ }
+ 
+ void
+@@ -1135,7 +1197,7 @@ tnewline(int first_col)
+ 	int y = term.c.y;
+ 
+ 	if (y == term.bot) {
+-		tscrollup(term.top, 1);
++		tscrollup(term.top, 1, 1);
+ 	} else {
+ 		y++;
+ 	}
+@@ -1300,14 +1362,14 @@ void
+ tinsertblankline(int n)
+ {
+ 	if (BETWEEN(term.c.y, term.top, term.bot))
+-		tscrolldown(term.c.y, n);
++		tscrolldown(term.c.y, n, 0);
+ }
+ 
+ void
+ tdeleteline(int n)
+ {
+ 	if (BETWEEN(term.c.y, term.top, term.bot))
+-		tscrollup(term.c.y, n);
++		tscrollup(term.c.y, n, 0);
+ }
+ 
+ int32_t
+@@ -1738,11 +1800,11 @@ csihandle(void)
+ 		break;
+ 	case 'S': /* SU -- Scroll <n> line up */
+ 		DEFAULT(csiescseq.arg[0], 1);
+-		tscrollup(term.top, csiescseq.arg[0]);
++		tscrollup(term.top, csiescseq.arg[0], 0);
+ 		break;
+ 	case 'T': /* SD -- Scroll <n> line down */
+ 		DEFAULT(csiescseq.arg[0], 1);
+-		tscrolldown(term.top, csiescseq.arg[0]);
++		tscrolldown(term.top, csiescseq.arg[0], 0);
+ 		break;
+ 	case 'L': /* IL -- Insert <n> blank lines */
+ 		DEFAULT(csiescseq.arg[0], 1);
+@@ -2248,7 +2310,7 @@ eschandle(uchar ascii)
+ 		return 0;
+ 	case 'D': /* IND -- Linefeed */
+ 		if (term.c.y == term.bot) {
+-			tscrollup(term.top, 1);
++			tscrollup(term.top, 1, 1);
+ 		} else {
+ 			tmoveto(term.c.x, term.c.y+1);
+ 		}
+@@ -2261,7 +2323,7 @@ eschandle(uchar ascii)
+ 		break;
+ 	case 'M': /* RI -- Reverse index */
+ 		if (term.c.y == term.top) {
+-			tscrolldown(term.top, 1);
++			tscrolldown(term.top, 1, 1);
+ 		} else {
+ 			tmoveto(term.c.x, term.c.y-1);
+ 		}
+@@ -2482,7 +2544,7 @@ twrite(const char *buf, int buflen, int show_ctrl)
+ void
+ tresize(int col, int row)
+ {
+-	int i;
++	int i, j;
+ 	int minrow = MIN(row, term.row);
+ 	int mincol = MIN(col, term.col);
+ 	int *bp;
+@@ -2519,6 +2581,14 @@ tresize(int col, int row)
+ 	term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
+ 	term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
+ 
++	for (i = 0; i < HISTSIZE; i++) {
++		term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
++		for (j = mincol; j < col; j++) {
++			term.hist[i][j] = term.c.attr;
++			term.hist[i][j].u = ' ';
++		}
++	}
++
+ 	/* resize each row to new width, zero-pad if needed */
+ 	for (i = 0; i < minrow; i++) {
+ 		term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
+@@ -2577,7 +2647,7 @@ drawregion(int x1, int y1, int x2, int y2)
+ 			continue;
+ 
+ 		term.dirty[y] = 0;
+-		xdrawline(term.line[y], x1, y, x2);
++		xdrawline(TLINE(y), x1, y, x2);
+ 	}
+ }
+ 
+@@ -2598,8 +2668,9 @@ draw(void)
+ 		cx--;
+ 
+ 	drawregion(0, 0, term.col, term.row);
+-	xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
+-			term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
++	if (term.scr == 0)
++		xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
++				term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
+ 	term.ocx = cx;
+ 	term.ocy = term.c.y;
+ 	xfinishdraw();
+diff --git a/st.h b/st.h
+index d978458..b9a4eeb 100644
+--- a/st.h
++++ b/st.h
+@@ -81,6 +81,8 @@ 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 *);
diff --git a/patches/solarized.diff b/patches/solarized.diff
new file mode 100644
index 0000000..241fef4
--- /dev/null
+++ b/patches/solarized.diff
@@ -0,0 +1,68 @@
+diff --git a/config.def.h b/config.def.h
+index 82b1b09..6065bb6 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -84,31 +84,23 @@ unsigned int tabspaces = 8;
+ 
+ /* Terminal colors (16 first used in escape sequence) */
+ static const char *colorname[] = {
+-	/* 8 normal colors */
+-	"black",
+-	"red3",
+-	"green3",
+-	"yellow3",
+-	"blue2",
+-	"magenta3",
+-	"cyan3",
+-	"gray90",
+-
+-	/* 8 bright colors */
+-	"gray50",
+-	"red",
+-	"green",
+-	"yellow",
+-	"#5c5cff",
+-	"magenta",
+-	"cyan",
+-	"white",
+-
+-	[255] = 0,
+-
+-	/* more colors can be added after 255 to use with DefaultXX */
+-	"#cccccc",
+-	"#555555",
++	/* solarized dark */
++	"#073642",  /*  0: black    */
++	"#dc322f",  /*  1: red      */
++	"#859900",  /*  2: green    */
++	"#b58900",  /*  3: yellow   */
++	"#268bd2",  /*  4: blue     */
++	"#d33682",  /*  5: magenta  */
++	"#2aa198",  /*  6: cyan     */
++	"#eee8d5",  /*  7: white    */
++	"#002b36",  /*  8: brblack  */
++	"#cb4b16",  /*  9: brred    */
++	"#586e75",  /* 10: brgreen  */
++	"#657b83",  /* 11: bryellow */
++	"#839496",  /* 12: brblue   */
++	"#6c71c4",  /* 13: brmagenta*/
++	"#93a1a1",  /* 14: brcyan   */
++	"#fdf6e3",  /* 15: brwhite  */
+ };
+ 
+ 
+@@ -116,10 +108,10 @@ static const char *colorname[] = {
+  * Default colors (colorname index)
+  * foreground, background, cursor, reverse cursor
+  */
+-unsigned int defaultfg = 7;
+-unsigned int defaultbg = 0;
+-static unsigned int defaultcs = 256;
+-static unsigned int defaultrcs = 257;
++unsigned int defaultfg = 12;
++unsigned int defaultbg = 8;
++static unsigned int defaultcs = 14;
++static unsigned int defaultrcs = 15;
+ 
+ /*
+  * Default shape of cursor