initial

Makefile

@@ -0,0 +1,57 @@
+# st - simple terminal
+# See LICENSE file for copyright and license details.
+.POSIX:
+
+include config.mk
+
+SRC = st.c x.c
+OBJ = $(SRC:.c=.o)
+
+all: options st
+
+options:
+	@echo st build options:
+	@echo "CFLAGS  = $(STCFLAGS)"
+	@echo "LDFLAGS = $(STLDFLAGS)"
+	@echo "CC      = $(CC)"
+
+config.h:
+	cp config.def.h config.h
+
+.c.o:
+	$(CC) $(STCFLAGS) -c $<
+
+st.o: config.h st.h win.h
+x.o: arg.h st.h win.h
+
+$(OBJ): config.h config.mk
+
+st: $(OBJ)
+	$(CC) -o $@ $(OBJ) $(STLDFLAGS)
+
+clean:
+	rm -f st $(OBJ) st-$(VERSION).tar.gz
+
+dist: clean
+	mkdir -p st-$(VERSION)
+	cp -R FAQ LEGACY TODO LICENSE Makefile README config.mk\
+		config.def.h st.info st.1 arg.h st.h win.h $(SRC)\
+		st-$(VERSION)
+	tar -cf - st-$(VERSION) | gzip > st-$(VERSION).tar.gz
+	rm -rf st-$(VERSION)
+
+install: st
+	mkdir -p $(DESTDIR)$(PREFIX)/bin
+	cp -f st $(DESTDIR)$(PREFIX)/bin
+	chmod 755 $(DESTDIR)$(PREFIX)/bin/st
+	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
+	sed "s/VERSION/$(VERSION)/g" < st.1 > $(DESTDIR)$(MANPREFIX)/man1/st.1
+	chmod 644 $(DESTDIR)$(MANPREFIX)/man1/st.1
+	tic -sx st.info
+	@echo Please see the README file regarding the terminfo entry of st.
+
+uninstall:
+	rm -f $(DESTDIR)$(PREFIX)/bin/st
+	rm -f $(DESTDIR)$(MANPREFIX)/man1/st.1
+
+.PHONY: all options clean dist install uninstall

README.md

@@ -0,0 +1,5 @@
+# st - simple terminal
+
+This is my custom suckless st build. The st project can be found here: https://st.suckless.org/
+
+The patches are stolen form Luke Smith's st build (http://github.com/LukeSmithxyz/st). Shortcuts etc. are changed.

arg.h

@@ -0,0 +1,50 @@
+/*
+ * Copy me if you can.
+ * by 20h
+ */
+
+#ifndef ARG_H__
+#define ARG_H__
+
+extern char *argv0;
+
+/* use main(int argc, char *argv[]) */
+#define ARGBEGIN	for (argv0 = *argv, argv++, argc--;\
+					argv[0] && argv[0][0] == '-'\
+					&& argv[0][1];\
+					argc--, argv++) {\
+				char argc_;\
+				char **argv_;\
+				int brk_;\
+				if (argv[0][1] == '-' && argv[0][2] == '\0') {\
+					argv++;\
+					argc--;\
+					break;\
+				}\
+				int i_;\
+				for (i_ = 1, brk_ = 0, argv_ = argv;\
+						argv[0][i_] && !brk_;\
+						i_++) {\
+					if (argv_ != argv)\
+						break;\
+					argc_ = argv[0][i_];\
+					switch (argc_)
+
+#define ARGEND			}\
+			}
+
+#define ARGC()		argc_
+
+#define EARGF(x)	((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
+				((x), abort(), (char *)0) :\
+				(brk_ = 1, (argv[0][i_+1] != '\0')?\
+					(&argv[0][i_+1]) :\
+					(argc--, argv++, argv[0])))
+
+#define ARGF()		((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
+				(char *)0 :\
+				(brk_ = 1, (argv[0][i_+1] != '\0')?\
+					(&argv[0][i_+1]) :\
+					(argc--, argv++, argv[0])))
+
+#endif

config.h

@@ -0,0 +1,524 @@
+/* See LICENSE file for copyright and license details. */
+
+/*
+ * appearance
+ *
+ * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
+ */
+static char *font = "mono:pixelsize=14:antialias=true:autohint=true";
+static int borderpx = 10;
+
+/*
+ * What program is execed by st depends of these precedence rules:
+ * 1: program passed with -e
+ * 2: utmp option
+ * 3: SHELL environment variable
+ * 4: value of shell in /etc/passwd
+ * 5: value of shell in config.h
+ */
+static char *shell = "/usr/bin/bash";
+char *utmp = NULL;
+char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400";
+
+/* identification sequence returned in DA and DECID */
+char *vtiden = "\033[?6c";
+
+/* Kerning / character bounding-box multipliers */
+static float cwscale = 1.0;
+static float chscale = 1.0;
+
+/*
+ * word delimiter string
+ *
+ * More advanced example: " `'\"()[]{}"
+ */
+char *worddelimiters = " ";
+
+/* selection timeouts (in milliseconds) */
+static unsigned int doubleclicktimeout = 300;
+static unsigned int tripleclicktimeout = 600;
+
+/* alt screens */
+int allowaltscreen = 1;
+
+/* frames per second st should at maximum draw to the screen */
+static unsigned int xfps = 120;
+static unsigned int actionfps = 30;
+
+/*
+ * blinking timeout (set to 0 to disable blinking) for the terminal blinking
+ * attribute.
+ */
+static unsigned int blinktimeout = 800;
+
+/*
+ * thickness of underline and bar cursors
+ */
+static unsigned int cursorthickness = 2;
+
+/*
+ * bell volume. It must be a value between -100 and 100. Use 0 for disabling
+ * it
+ */
+static int bellvolume = 0;
+
+/* default TERM value */
+char *termname = "st-256color";
+
+/*
+ * spaces per tab
+ *
+ * When you are changing this value, don't forget to adapt the »it« value in
+ * the st.info and appropriately install the st.info in the environment where
+ * you use this st version.
+ *
+ *	it#$tabspaces,
+ *
+ * Secondly make sure your kernel is not expanding tabs. When running `stty
+ * -a` »tab0« should appear. You can tell the terminal to not expand tabs by
+ *  running following command:
+ *
+ *	stty tabs
+ */
+unsigned int tabspaces = 8;
+
+/* bg opacity */
+unsigned int alpha = 0xaa;
+
+static const char *colorname[] = {
+	"#282828", /* hard contrast: #1d2021 / soft contrast: #32302f */
+	"#cc241d",
+	"#98971a",
+	"#d79921",
+	"#458588",
+	"#b16286",
+	"#689d6a",
+	"#a89984",
+	"#928374",
+	"#fb4934",
+	"#b8bb26",
+	"#fabd2f",
+	"#83a598",
+	"#d3869b",
+	"#8ec07c",
+	"#ebdbb2",
+	[255] = 0,
+	/* more colors can be added after 255 to use with DefaultXX */
+	"black",   /* 256 -> bg */
+	"white",   /* 257 -> fg */
+};
+
+
+/*
+ * Default colors (colorname index)
+ * foreground, background, cursor, reverse cursor
+ */
+unsigned int defaultfg = 15;
+unsigned int defaultbg = 0;
+static unsigned int defaultcs = 15;
+static unsigned int defaultrcs = 0;
+
+/*
+ * Default shape of cursor
+ * 2: Block ("█")
+ * 4: Underline ("_")
+ * 6: Bar ("|")
+ * 7: Snowman ("☃")
+ */
+static unsigned int cursorshape = 2;
+
+/*
+ * Default columns and rows numbers
+ */
+
+static unsigned int cols = 80;
+static unsigned int rows = 24;
+
+/*
+ * Default colour and shape of the mouse cursor
+ */
+static unsigned int mouseshape = XC_xterm;
+static unsigned int mousefg = 7;
+static unsigned int mousebg = 0;
+
+/*
+ * Color used to display font attributes when fontconfig selected a font which
+ * doesn't match the ones requested.
+ */
+static unsigned int defaultattr = 11;
+
+/*
+ * Xresources preferences to load at startup
+ */
+ResourcePref resources[] = {
+		{ "font",         STRING,  &font },
+		{ "color0",       STRING,  &colorname[0] },
+		{ "color1",       STRING,  &colorname[1] },
+		{ "color2",       STRING,  &colorname[2] },
+		{ "color3",       STRING,  &colorname[3] },
+		{ "color4",       STRING,  &colorname[4] },
+		{ "color5",       STRING,  &colorname[5] },
+		{ "color6",       STRING,  &colorname[6] },
+		{ "color7",       STRING,  &colorname[7] },
+		{ "color8",       STRING,  &colorname[8] },
+		{ "color9",       STRING,  &colorname[9] },
+		{ "color10",      STRING,  &colorname[10] },
+		{ "color11",      STRING,  &colorname[11] },
+		{ "color12",      STRING,  &colorname[12] },
+		{ "color13",      STRING,  &colorname[13] },
+		{ "color14",      STRING,  &colorname[14] },
+		{ "color15",      STRING,  &colorname[15] },
+		{ "background",   STRING,  &colorname[256] },
+		{ "foreground",   STRING,  &colorname[257] },
+		{ "termname",     STRING,  &termname },
+		{ "shell",        STRING,  &shell },
+		{ "xfps",         INTEGER, &xfps },
+		{ "actionfps",    INTEGER, &actionfps },
+		{ "blinktimeout", INTEGER, &blinktimeout },
+		{ "bellvolume",   INTEGER, &bellvolume },
+		{ "tabspaces",    INTEGER, &tabspaces },
+		{ "cwscale",      FLOAT,   &cwscale },
+		{ "chscale",      FLOAT,   &chscale },
+		{ "alpha",        INTEGER,   &alpha },
+};
+
+/*
+ * Internal mouse shortcuts.
+ * Beware that overloading Button1 will disable the selection.
+ */
+static MouseShortcut mshortcuts[] = {
+	/* button               mask            string */
+	//{ Button4,              XK_NO_MOD,      "\031" },
+	//{ Button5,              XK_NO_MOD,      "\005" },
+};
+
+/* Internal keyboard shortcuts. */
+#define MODKEY ControlMask
+#define WINKEY Mod4Mask
+
+MouseKey mkeys[] = {
+	/* button               mask            function        argument */
+	{ Button4,              ShiftMask,      kscrollup,      {.i =  1} },
+	{ Button5,              ShiftMask,      kscrolldown,    {.i =  1} },
+	{ Button4,              MODKEY,         kscrollup,      {.i =  1} },
+	{ Button5,              MODKEY,         kscrolldown,    {.i =  1} },
+	{ Button4,              0,              kscrollup,      {.i =  1} },
+	{ Button5,              0,              kscrolldown,    {.i =  1} },
+	{ Button4,              MODKEY|ShiftMask,         zoom, {.f =  +1} },
+	{ Button5,              MODKEY|ShiftMask,         zoom, {.f =  -1} },
+};
+
+static char *openurlcmd[] = { "/bin/sh", "-c",
+    "xurls | uniq | dmenu -l 10 | xargs -r xdg-open",
+    "externalpipe", NULL };
+
+static Shortcut shortcuts[] = {
+	/* mask                 keysym          function        argument */
+	{ XK_ANY_MOD,           XK_Break,       sendbreak,      {.i =  0} },
+	{ ControlMask,          XK_Print,       toggleprinter,  {.i =  0} },
+	{ ShiftMask,            XK_Print,       printscreen,    {.i =  0} },
+	{ XK_ANY_MOD,           XK_Print,       printsel,       {.i =  0} },
+	{ MODKEY|ShiftMask,     XK_plus,        zoom,           {.f = +1} },
+	{ MODKEY,               XK_minus,       zoom,           {.f = -1} },
+	{ MODKEY,		XK_Home,	zoomreset,	{.f =  0} },
+	{ MODKEY|ShiftMask,     XK_C,           clipcopy,       {.i =  0} },
+	{ MODKEY|ShiftMask,     XK_V,           clippaste,      {.i =  0} },
+	{ MODKEY,               XK_p,           selpaste,       {.i =  0} },
+	{ MODKEY,		XK_Num_Lock,	numlock,	{.i =  0} },
+	{ MODKEY,               XK_Control_L,   iso14755,       {.i =  0} },
+	{ ShiftMask,            XK_Page_Up,     kscrollup,      {.i = -1} },
+	{ ShiftMask,            XK_Page_Down,   kscrolldown,    {.i = -1} },
+
+	{ MODKEY,               XK_Page_Up,     kscrollup,      {.i = -1} },
+	{ MODKEY,               XK_Page_Down,   kscrolldown,    {.i = -1} },
+
+	{ WINKEY,            	XK_k,  		kscrollup,      {.i =  1} },
+	{ WINKEY,            	XK_j,   	kscrolldown,    {.i =  1} },
+	{ WINKEY,            	XK_Up,  	kscrollup,      {.i =  1} },
+	{ WINKEY,            	XK_Down,   	kscrolldown,    {.i =  1} },
+
+	{ WINKEY,	        XK_u,		kscrollup,      {.i = -1} },
+	{ WINKEY,  		XK_d,		kscrolldown,   	{.i = -1} },
+    	//{ MODKEY,		XK_l,		externalpipe,	{ .v = openurlcmd } },
+};
+
+/*
+ * Special keys (change & recompile st.info accordingly)
+ *
+ * Mask value:
+ * * Use XK_ANY_MOD to match the key no matter modifiers state
+ * * Use XK_NO_MOD to match the key alone (no modifiers)
+ * appkey value:
+ * * 0: no value
+ * * > 0: keypad application mode enabled
+ * *   = 2: term.numlock = 1
+ * * < 0: keypad application mode disabled
+ * appcursor value:
+ * * 0: no value
+ * * > 0: cursor application mode enabled
+ * * < 0: cursor application mode disabled
+ * crlf value
+ * * 0: no value
+ * * > 0: crlf mode is enabled
+ * * < 0: crlf mode is disabled
+ *
+ * Be careful with the order of the definitions because st searches in
+ * this table sequentially, so any XK_ANY_MOD must be in the last
+ * position for a key.
+ */
+
+/*
+ * If you want keys other than the X11 function keys (0xFD00 - 0xFFFF)
+ * to be mapped below, add them to this array.
+ */
+static KeySym mappedkeys[] = { -1 };
+
+/*
+ * State bits to ignore when matching key or button events.  By default,
+ * numlock (Mod2Mask) and keyboard layout (XK_SWITCH_MOD) are ignored.
+ */
+static uint ignoremod = Mod2Mask|XK_SWITCH_MOD;
+
+/*
+ * Override mouse-select while mask is active (when MODE_MOUSE is set).
+ * Note that if you want to use ShiftMask with selmasks, set this to an other
+ * modifier, set to 0 to not use it.
+ */
+static uint forceselmod = ShiftMask;
+
+/*
+ * This is the huge key array which defines all compatibility to the Linux
+ * world. Please decide about changes wisely.
+ */
+static Key key[] = {
+	/* keysym           mask            string      appkey appcursor */
+	{ XK_KP_Home,       ShiftMask,      "\033[2J",       0,   -1},
+	{ XK_KP_Home,       ShiftMask,      "\033[1;2H",     0,   +1},
+	{ XK_KP_Home,       XK_ANY_MOD,     "\033[H",        0,   -1},
+	{ XK_KP_Home,       XK_ANY_MOD,     "\033[1~",       0,   +1},
+	{ XK_KP_Up,         XK_ANY_MOD,     "\033Ox",       +1,    0},
+	{ XK_KP_Up,         XK_ANY_MOD,     "\033[A",        0,   -1},
+	{ XK_KP_Up,         XK_ANY_MOD,     "\033OA",        0,   +1},
+	{ XK_KP_Down,       XK_ANY_MOD,     "\033Or",       +1,    0},
+	{ XK_KP_Down,       XK_ANY_MOD,     "\033[B",        0,   -1},
+	{ XK_KP_Down,       XK_ANY_MOD,     "\033OB",        0,    0},
+	{ XK_KP_Left,       XK_ANY_MOD,     "\033Ot",       +1,    0},
+	{ XK_KP_Left,       XK_ANY_MOD,     "\033[D",        0,   -1},
+	{ XK_KP_Left,       XK_ANY_MOD,     "\033OD",        0,   +1},
+	{ XK_KP_Right,      XK_ANY_MOD,     "\033Ov",       +1,    0},
+	{ XK_KP_Right,      XK_ANY_MOD,     "\033[C",        0,   -1},
+	{ XK_KP_Right,      XK_ANY_MOD,     "\033OC",        0,   +1},
+	{ XK_KP_Prior,      ShiftMask,      "\033[5;2~",     0,    0},
+	{ XK_KP_Prior,      XK_ANY_MOD,     "\033[5~",       0,    0},
+	{ XK_KP_Begin,      XK_ANY_MOD,     "\033[E",        0,    0},
+	{ XK_KP_End,        ControlMask,    "\033[J",       -1,    0},
+	{ XK_KP_End,        ControlMask,    "\033[1;5F",    +1,    0},
+	{ XK_KP_End,        ShiftMask,      "\033[K",       -1,    0},
+	{ XK_KP_End,        ShiftMask,      "\033[1;2F",    +1,    0},
+	{ XK_KP_End,        XK_ANY_MOD,     "\033[4~",       0,    0},
+	{ XK_KP_Next,       ShiftMask,      "\033[6;2~",     0,    0},
+	{ XK_KP_Next,       XK_ANY_MOD,     "\033[6~",       0,    0},
+	{ XK_KP_Insert,     ShiftMask,      "\033[2;2~",    +1,    0},
+	{ XK_KP_Insert,     ShiftMask,      "\033[4l",      -1,    0},
+	{ XK_KP_Insert,     ControlMask,    "\033[L",       -1,    0},
+	{ XK_KP_Insert,     ControlMask,    "\033[2;5~",    +1,    0},
+	{ XK_KP_Insert,     XK_ANY_MOD,     "\033[4h",      -1,    0},
+	{ XK_KP_Insert,     XK_ANY_MOD,     "\033[2~",      +1,    0},
+	{ XK_KP_Delete,     ControlMask,    "\033[M",       -1,    0},
+	{ XK_KP_Delete,     ControlMask,    "\033[3;5~",    +1,    0},
+	{ XK_KP_Delete,     ShiftMask,      "\033[2K",      -1,    0},
+	{ XK_KP_Delete,     ShiftMask,      "\033[3;2~",    +1,    0},
+	{ XK_KP_Delete,     XK_ANY_MOD,     "\033[P",       -1,    0},
+	{ XK_KP_Delete,     XK_ANY_MOD,     "\033[3~",      +1,    0},
+	{ XK_KP_Multiply,   XK_ANY_MOD,     "\033Oj",       +2,    0},
+	{ XK_KP_Add,        XK_ANY_MOD,     "\033Ok",       +2,    0},
+	{ XK_KP_Enter,      XK_ANY_MOD,     "\033OM",       +2,    0},
+	{ XK_KP_Enter,      XK_ANY_MOD,     "\r",           -1,    0},
+	{ XK_KP_Subtract,   XK_ANY_MOD,     "\033Om",       +2,    0},
+	{ XK_KP_Decimal,    XK_ANY_MOD,     "\033On",       +2,    0},
+	{ XK_KP_Divide,     XK_ANY_MOD,     "\033Oo",       +2,    0},
+	{ XK_KP_0,          XK_ANY_MOD,     "\033Op",       +2,    0},
+	{ XK_KP_1,          XK_ANY_MOD,     "\033Oq",       +2,    0},
+	{ XK_KP_2,          XK_ANY_MOD,     "\033Or",       +2,    0},
+	{ XK_KP_3,          XK_ANY_MOD,     "\033Os",       +2,    0},
+	{ XK_KP_4,          XK_ANY_MOD,     "\033Ot",       +2,    0},
+	{ XK_KP_5,          XK_ANY_MOD,     "\033Ou",       +2,    0},
+	{ XK_KP_6,          XK_ANY_MOD,     "\033Ov",       +2,    0},
+	{ XK_KP_7,          XK_ANY_MOD,     "\033Ow",       +2,    0},
+	{ XK_KP_8,          XK_ANY_MOD,     "\033Ox",       +2,    0},
+	{ XK_KP_9,          XK_ANY_MOD,     "\033Oy",       +2,    0},
+	{ XK_Up,            ShiftMask,      "\033[1;2A",     0,    0},
+	{ XK_Up,            Mod1Mask,       "\033[1;3A",     0,    0},
+	{ XK_Up,         ShiftMask|Mod1Mask,"\033[1;4A",     0,    0},
+	{ XK_Up,            ControlMask,    "\033[1;5A",     0,    0},
+	{ XK_Up,      ShiftMask|ControlMask,"\033[1;6A",     0,    0},
+	{ XK_Up,       ControlMask|Mod1Mask,"\033[1;7A",     0,    0},
+	{ XK_Up,ShiftMask|ControlMask|Mod1Mask,"\033[1;8A",  0,    0},
+	{ XK_Up,            XK_ANY_MOD,     "\033[A",        0,   -1},
+	{ XK_Up,            XK_ANY_MOD,     "\033OA",        0,   +1},
+	{ XK_Down,          ShiftMask,      "\033[1;2B",     0,    0},
+	{ XK_Down,          Mod1Mask,       "\033[1;3B",     0,    0},
+	{ XK_Down,       ShiftMask|Mod1Mask,"\033[1;4B",     0,    0},
+	{ XK_Down,          ControlMask,    "\033[1;5B",     0,    0},
+	{ XK_Down,    ShiftMask|ControlMask,"\033[1;6B",     0,    0},
+	{ XK_Down,     ControlMask|Mod1Mask,"\033[1;7B",     0,    0},
+	{ XK_Down,ShiftMask|ControlMask|Mod1Mask,"\033[1;8B",0,    0},
+	{ XK_Down,          XK_ANY_MOD,     "\033[B",        0,   -1},
+	{ XK_Down,          XK_ANY_MOD,     "\033OB",        0,   +1},
+	{ XK_Left,          ShiftMask,      "\033[1;2D",     0,    0},
+	{ XK_Left,          Mod1Mask,       "\033[1;3D",     0,    0},
+	{ XK_Left,       ShiftMask|Mod1Mask,"\033[1;4D",     0,    0},
+	{ XK_Left,          ControlMask,    "\033[1;5D",     0,    0},
+	{ XK_Left,    ShiftMask|ControlMask,"\033[1;6D",     0,    0},
+	{ XK_Left,     ControlMask|Mod1Mask,"\033[1;7D",     0,    0},
+	{ XK_Left,ShiftMask|ControlMask|Mod1Mask,"\033[1;8D",0,    0},
+	{ XK_Left,          XK_ANY_MOD,     "\033[D",        0,   -1},
+	{ XK_Left,          XK_ANY_MOD,     "\033OD",        0,   +1},
+	{ XK_Right,         ShiftMask,      "\033[1;2C",     0,    0},
+	{ XK_Right,         Mod1Mask,       "\033[1;3C",     0,    0},
+	{ XK_Right,      ShiftMask|Mod1Mask,"\033[1;4C",     0,    0},
+	{ XK_Right,         ControlMask,    "\033[1;5C",     0,    0},
+	{ XK_Right,   ShiftMask|ControlMask,"\033[1;6C",     0,    0},
+	{ XK_Right,    ControlMask|Mod1Mask,"\033[1;7C",     0,    0},
+	{ XK_Right,ShiftMask|ControlMask|Mod1Mask,"\033[1;8C",0,   0},
+	{ XK_Right,         XK_ANY_MOD,     "\033[C",        0,   -1},
+	{ XK_Right,         XK_ANY_MOD,     "\033OC",        0,   +1},
+	{ XK_ISO_Left_Tab,  ShiftMask,      "\033[Z",        0,    0},
+	{ XK_Return,        Mod1Mask,       "\033\r",        0,    0},
+	{ XK_Return,        XK_ANY_MOD,     "\r",            0,    0},
+	{ XK_Insert,        ShiftMask,      "\033[4l",      -1,    0},
+	{ XK_Insert,        ShiftMask,      "\033[2;2~",    +1,    0},
+	{ XK_Insert,        ControlMask,    "\033[L",       -1,    0},
+	{ XK_Insert,        ControlMask,    "\033[2;5~",    +1,    0},
+	{ XK_Insert,        XK_ANY_MOD,     "\033[4h",      -1,    0},
+	{ XK_Insert,        XK_ANY_MOD,     "\033[2~",      +1,    0},
+	{ XK_Delete,        ControlMask,    "\033[M",       -1,    0},
+	{ XK_Delete,        ControlMask,    "\033[3;5~",    +1,    0},
+	{ XK_Delete,        ShiftMask,      "\033[2K",      -1,    0},
+	{ XK_Delete,        ShiftMask,      "\033[3;2~",    +1,    0},
+	{ XK_Delete,        XK_ANY_MOD,     "\033[P",       -1,    0},
+	{ XK_Delete,        XK_ANY_MOD,     "\033[3~",      +1,    0},
+	{ XK_BackSpace,     XK_NO_MOD,      "\177",          0,    0},
+	{ XK_BackSpace,     Mod1Mask,       "\033\177",      0,    0},
+	{ XK_Home,          ShiftMask,      "\033[2J",       0,   -1},
+	{ XK_Home,          ShiftMask,      "\033[1;2H",     0,   +1},
+	{ XK_Home,          XK_ANY_MOD,     "\033[H",        0,   -1},
+	{ XK_Home,          XK_ANY_MOD,     "\033[1~",       0,   +1},
+	{ XK_End,           ControlMask,    "\033[J",       -1,    0},
+	{ XK_End,           ControlMask,    "\033[1;5F",    +1,    0},
+	{ XK_End,           ShiftMask,      "\033[K",       -1,    0},
+	{ XK_End,           ShiftMask,      "\033[1;2F",    +1,    0},
+	{ XK_End,           XK_ANY_MOD,     "\033[4~",       0,    0},
+	{ XK_Prior,         ControlMask,    "\033[5;5~",     0,    0},
+	{ XK_Prior,         ShiftMask,      "\033[5;2~",     0,    0},
+	{ XK_Prior,         XK_ANY_MOD,     "\033[5~",       0,    0},
+	{ XK_Next,          ControlMask,    "\033[6;5~",     0,    0},
+	{ XK_Next,          ShiftMask,      "\033[6;2~",     0,    0},
+	{ XK_Next,          XK_ANY_MOD,     "\033[6~",       0,    0},
+	{ XK_F1,            XK_NO_MOD,      "\033OP" ,       0,    0},
+	{ XK_F1, /* F13 */  ShiftMask,      "\033[1;2P",     0,    0},
+	{ XK_F1, /* F25 */  ControlMask,    "\033[1;5P",     0,    0},
+	{ XK_F1, /* F37 */  Mod4Mask,       "\033[1;6P",     0,    0},
+	{ XK_F1, /* F49 */  Mod1Mask,       "\033[1;3P",     0,    0},
+	{ XK_F1, /* F61 */  Mod3Mask,       "\033[1;4P",     0,    0},
+	{ XK_F2,            XK_NO_MOD,      "\033OQ" ,       0,    0},
+	{ XK_F2, /* F14 */  ShiftMask,      "\033[1;2Q",     0,    0},
+	{ XK_F2, /* F26 */  ControlMask,    "\033[1;5Q",     0,    0},
+	{ XK_F2, /* F38 */  Mod4Mask,       "\033[1;6Q",     0,    0},
+	{ XK_F2, /* F50 */  Mod1Mask,       "\033[1;3Q",     0,    0},
+	{ XK_F2, /* F62 */  Mod3Mask,       "\033[1;4Q",     0,    0},
+	{ XK_F3,            XK_NO_MOD,      "\033OR" ,       0,    0},
+	{ XK_F3, /* F15 */  ShiftMask,      "\033[1;2R",     0,    0},
+	{ XK_F3, /* F27 */  ControlMask,    "\033[1;5R",     0,    0},
+	{ XK_F3, /* F39 */  Mod4Mask,       "\033[1;6R",     0,    0},
+	{ XK_F3, /* F51 */  Mod1Mask,       "\033[1;3R",     0,    0},
+	{ XK_F3, /* F63 */  Mod3Mask,       "\033[1;4R",     0,    0},
+	{ XK_F4,            XK_NO_MOD,      "\033OS" ,       0,    0},
+	{ XK_F4, /* F16 */  ShiftMask,      "\033[1;2S",     0,    0},
+	{ XK_F4, /* F28 */  ControlMask,    "\033[1;5S",     0,    0},
+	{ XK_F4, /* F40 */  Mod4Mask,       "\033[1;6S",     0,    0},
+	{ XK_F4, /* F52 */  Mod1Mask,       "\033[1;3S",     0,    0},
+	{ XK_F5,            XK_NO_MOD,      "\033[15~",      0,    0},
+	{ XK_F5, /* F17 */  ShiftMask,      "\033[15;2~",    0,    0},
+	{ XK_F5, /* F29 */  ControlMask,    "\033[15;5~",    0,    0},
+	{ XK_F5, /* F41 */  Mod4Mask,       "\033[15;6~",    0,    0},
+	{ XK_F5, /* F53 */  Mod1Mask,       "\033[15;3~",    0,    0},
+	{ XK_F6,            XK_NO_MOD,      "\033[17~",      0,    0},
+	{ XK_F6, /* F18 */  ShiftMask,      "\033[17;2~",    0,    0},
+	{ XK_F6, /* F30 */  ControlMask,    "\033[17;5~",    0,    0},
+	{ XK_F6, /* F42 */  Mod4Mask,       "\033[17;6~",    0,    0},
+	{ XK_F6, /* F54 */  Mod1Mask,       "\033[17;3~",    0,    0},
+	{ XK_F7,            XK_NO_MOD,      "\033[18~",      0,    0},
+	{ XK_F7, /* F19 */  ShiftMask,      "\033[18;2~",    0,    0},
+	{ XK_F7, /* F31 */  ControlMask,    "\033[18;5~",    0,    0},
+	{ XK_F7, /* F43 */  Mod4Mask,       "\033[18;6~",    0,    0},
+	{ XK_F7, /* F55 */  Mod1Mask,       "\033[18;3~",    0,    0},
+	{ XK_F8,            XK_NO_MOD,      "\033[19~",      0,    0},
+	{ XK_F8, /* F20 */  ShiftMask,      "\033[19;2~",    0,    0},
+	{ XK_F8, /* F32 */  ControlMask,    "\033[19;5~",    0,    0},
+	{ XK_F8, /* F44 */  Mod4Mask,       "\033[19;6~",    0,    0},
+	{ XK_F8, /* F56 */  Mod1Mask,       "\033[19;3~",    0,    0},
+	{ XK_F9,            XK_NO_MOD,      "\033[20~",      0,    0},
+	{ XK_F9, /* F21 */  ShiftMask,      "\033[20;2~",    0,    0},
+	{ XK_F9, /* F33 */  ControlMask,    "\033[20;5~",    0,    0},
+	{ XK_F9, /* F45 */  Mod4Mask,       "\033[20;6~",    0,    0},
+	{ XK_F9, /* F57 */  Mod1Mask,       "\033[20;3~",    0,    0},
+	{ XK_F10,           XK_NO_MOD,      "\033[21~",      0,    0},
+	{ XK_F10, /* F22 */ ShiftMask,      "\033[21;2~",    0,    0},
+	{ XK_F10, /* F34 */ ControlMask,    "\033[21;5~",    0,    0},
+	{ XK_F10, /* F46 */ Mod4Mask,       "\033[21;6~",    0,    0},
+	{ XK_F10, /* F58 */ Mod1Mask,       "\033[21;3~",    0,    0},
+	{ XK_F11,           XK_NO_MOD,      "\033[23~",      0,    0},
+	{ XK_F11, /* F23 */ ShiftMask,      "\033[23;2~",    0,    0},
+	{ XK_F11, /* F35 */ ControlMask,    "\033[23;5~",    0,    0},
+	{ XK_F11, /* F47 */ Mod4Mask,       "\033[23;6~",    0,    0},
+	{ XK_F11, /* F59 */ Mod1Mask,       "\033[23;3~",    0,    0},
+	{ XK_F12,           XK_NO_MOD,      "\033[24~",      0,    0},
+	{ XK_F12, /* F24 */ ShiftMask,      "\033[24;2~",    0,    0},
+	{ XK_F12, /* F36 */ ControlMask,    "\033[24;5~",    0,    0},
+	{ XK_F12, /* F48 */ Mod4Mask,       "\033[24;6~",    0,    0},
+	{ XK_F12, /* F60 */ Mod1Mask,       "\033[24;3~",    0,    0},
+	{ XK_F13,           XK_NO_MOD,      "\033[1;2P",     0,    0},
+	{ XK_F14,           XK_NO_MOD,      "\033[1;2Q",     0,    0},
+	{ XK_F15,           XK_NO_MOD,      "\033[1;2R",     0,    0},
+	{ XK_F16,           XK_NO_MOD,      "\033[1;2S",     0,    0},
+	{ XK_F17,           XK_NO_MOD,      "\033[15;2~",    0,    0},
+	{ XK_F18,           XK_NO_MOD,      "\033[17;2~",    0,    0},
+	{ XK_F19,           XK_NO_MOD,      "\033[18;2~",    0,    0},
+	{ XK_F20,           XK_NO_MOD,      "\033[19;2~",    0,    0},
+	{ XK_F21,           XK_NO_MOD,      "\033[20;2~",    0,    0},
+	{ XK_F22,           XK_NO_MOD,      "\033[21;2~",    0,    0},
+	{ XK_F23,           XK_NO_MOD,      "\033[23;2~",    0,    0},
+	{ XK_F24,           XK_NO_MOD,      "\033[24;2~",    0,    0},
+	{ XK_F25,           XK_NO_MOD,      "\033[1;5P",     0,    0},
+	{ XK_F26,           XK_NO_MOD,      "\033[1;5Q",     0,    0},
+	{ XK_F27,           XK_NO_MOD,      "\033[1;5R",     0,    0},
+	{ XK_F28,           XK_NO_MOD,      "\033[1;5S",     0,    0},
+	{ XK_F29,           XK_NO_MOD,      "\033[15;5~",    0,    0},
+	{ XK_F30,           XK_NO_MOD,      "\033[17;5~",    0,    0},
+	{ XK_F31,           XK_NO_MOD,      "\033[18;5~",    0,    0},
+	{ XK_F32,           XK_NO_MOD,      "\033[19;5~",    0,    0},
+	{ XK_F33,           XK_NO_MOD,      "\033[20;5~",    0,    0},
+	{ XK_F34,           XK_NO_MOD,      "\033[21;5~",    0,    0},
+	{ XK_F35,           XK_NO_MOD,      "\033[23;5~",    0,    0},
+};
+
+/*
+ * Selection types' masks.
+ * Use the same masks as usual.
+ * Button1Mask is always unset, to make masks match between ButtonPress.
+ * ButtonRelease and MotionNotify.
+ * If no match is found, regular selection is used.
+ */
+static uint selmasks[] = {
+	[SEL_RECTANGULAR] = Mod1Mask,
+};
+
+/*
+ * Printable characters in ASCII, used to estimate the advance width
+ * of single wide characters.
+ */
+static char ascii_printable[] =
+	" !\"#$%&'()*+,-./0123456789:;<=>?"
+	"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
+	"`abcdefghijklmnopqrstuvwxyz{|}~";

config.mk

@@ -0,0 +1,28 @@
+# st version
+VERSION = 0.8.1
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = $(PREFIX)/share/man
+
+X11INC = /usr/X11R6/include
+X11LIB = /usr/X11R6/lib
+
+# includes and libs
+INCS = -I$(X11INC) \
+       `pkg-config --cflags fontconfig` \
+       `pkg-config --cflags freetype2`
+LIBS = -L${X11LIB} -lm -lrt -lX11 -lutil -lXft -lXrender \
+       `pkg-config --libs fontconfig` \
+       `pkg-config --libs freetype2`
+
+# flags
+CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
+STCFLAGS = $(INCS) $(CPPFLAGS) $(CFLAGS)
+STLDFLAGS = $(LIBS) $(LDFLAGS)
+
+# compiler and linker
+# CC = c99
+

st.c

@@ -0,0 +1,2741 @@
+/* See LICENSE for license details. */
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/select.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <termios.h>
+#include <unistd.h>
+#include <wchar.h>
+
+#include "st.h"
+#include "win.h"
+
+#if   defined(__linux)
+ #include <pty.h>
+#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
+ #include <util.h>
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+ #include <libutil.h>
+#endif
+
+/* Arbitrary sizes */
+#define UTF_INVALID   0xFFFD
+#define UTF_SIZ       4
+#define ESC_BUF_SIZ   (128*UTF_SIZ)
+#define ESC_ARG_SIZ   16
+#define STR_BUF_SIZ   ESC_BUF_SIZ
+#define STR_ARG_SIZ   ESC_ARG_SIZ
+
+/* macros */
+#define IS_SET(flag)		((term.mode & (flag)) != 0)
+#define NUMMAXLEN(x)		((int)(sizeof(x) * 2.56 + 0.5) + 1)
+#define ISCONTROLC0(c)		(BETWEEN(c, 0, 0x1f) || (c) == '\177')
+#define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
+#define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
+#define ISDELIM(u)		(utf8strchr(worddelimiters, u) != NULL)
+
+/* constants */
+#define ISO14755CMD		"dmenu -w \"$WINDOWID\" -p codepoint: </dev/null"
+
+enum term_mode {
+	MODE_WRAP        = 1 << 0,
+	MODE_INSERT      = 1 << 1,
+	MODE_ALTSCREEN   = 1 << 2,
+	MODE_CRLF        = 1 << 3,
+	MODE_ECHO        = 1 << 4,
+	MODE_PRINT       = 1 << 5,
+	MODE_UTF8        = 1 << 6,
+	MODE_SIXEL       = 1 << 7,
+};
+
+enum cursor_movement {
+	CURSOR_SAVE,
+	CURSOR_LOAD
+};
+
+enum cursor_state {
+	CURSOR_DEFAULT  = 0,
+	CURSOR_WRAPNEXT = 1,
+	CURSOR_ORIGIN   = 2
+};
+
+enum charset {
+	CS_GRAPHIC0,
+	CS_GRAPHIC1,
+	CS_UK,
+	CS_USA,
+	CS_MULTI,
+	CS_GER,
+	CS_FIN
+};
+
+enum escape_state {
+	ESC_START      = 1,
+	ESC_CSI        = 2,
+	ESC_STR        = 4,  /* OSC, PM, APC */
+	ESC_ALTCHARSET = 8,
+	ESC_STR_END    = 16, /* a final string was encountered */
+	ESC_TEST       = 32, /* Enter in test mode */
+	ESC_UTF8       = 64,
+	ESC_DCS        =128,
+};
+
+typedef struct {
+	Glyph attr; /* current char attributes */
+	int x;
+	int y;
+	char state;
+} TCursor;
+
+typedef struct {
+	int mode;
+	int type;
+	int snap;
+	/*
+	 * Selection variables:
+	 * nb – normalized coordinates of the beginning of the selection
+	 * ne – normalized coordinates of the end of the selection
+	 * ob – original coordinates of the beginning of the selection
+	 * oe – original coordinates of the end of the selection
+	 */
+	struct {
+		int x, y;
+	} nb, ne, ob, oe;
+
+	int alt;
+} Selection;
+
+/* Internal representation of the screen */
+typedef struct {
+	int row;      /* nb row */
+	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 */
+	int ocy;      /* old cursor row */
+	int top;      /* top    scroll limit */
+	int bot;      /* bottom scroll limit */
+	int mode;     /* terminal mode flags */
+	int esc;      /* escape state flags */
+	char trantbl[4]; /* charset table translation */
+	int charset;  /* current charset */
+	int icharset; /* selected charset for sequence */
+	int *tabs;
+} Term;
+
+/* CSI Escape sequence structs */
+/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
+typedef struct {
+	char buf[ESC_BUF_SIZ]; /* raw string */
+	int len;               /* raw string length */
+	char priv;
+	int arg[ESC_ARG_SIZ];
+	int narg;              /* nb of args */
+	char mode[2];
+} CSIEscape;
+
+/* STR Escape sequence structs */
+/* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
+typedef struct {
+	char type;             /* ESC type ... */
+	char buf[STR_BUF_SIZ]; /* raw string */
+	int len;               /* raw string length */
+	char *args[STR_ARG_SIZ];
+	int narg;              /* nb of args */
+} STREscape;
+
+static void execsh(char *, char **);
+static void stty(char **);
+static void sigchld(int);
+static void ttywriteraw(const char *, size_t);
+
+static void csidump(void);
+static void csihandle(void);
+static void csiparse(void);
+static void csireset(void);
+static int eschandle(uchar);
+static void strdump(void);
+static void strhandle(void);
+static void strparse(void);
+static void strreset(void);
+
+static void tprinter(char *, size_t);
+static void tdumpsel(void);
+static void tdumpline(int);
+static void tdump(void);
+static void tclearregion(int, int, int, int);
+static void tcursor(int);
+static void tdeletechar(int);
+static void tdeleteline(int);
+static void tinsertblank(int);
+static void tinsertblankline(int);
+static int tlinelen(int);
+static void tmoveto(int, int);
+static void tmoveato(int, int);
+static void tnewline(int);
+static void tputtab(int);
+static void tputc(Rune);
+static void treset(void);
+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);
+static void tsetscroll(int, int);
+static void tswapscreen(void);
+static void tsetmode(int, int, int *, int);
+static int twrite(const char *, int, int);
+static void tfulldirt(void);
+static void tcontrolcode(uchar );
+static void tdectest(char );
+static void tdefutf8(char);
+static int32_t tdefcolor(int *, int *, int);
+static void tdeftran(char);
+static void tstrsequence(uchar);
+
+static void drawregion(int, int, int, int);
+
+static void selnormalize(void);
+static void selscroll(int, int);
+static void selsnap(int *, int *, int);
+
+static size_t utf8decode(const char *, Rune *, size_t);
+static Rune utf8decodebyte(char, size_t *);
+static char utf8encodebyte(Rune, size_t);
+static char *utf8strchr(char *, Rune);
+static size_t utf8validate(Rune *, size_t);
+
+static char *base64dec(const char *);
+static char base64dec_getc(const char **);
+
+static ssize_t xwrite(int, const char *, size_t);
+
+/* Globals */
+static Term term;
+static Selection sel;
+static CSIEscape csiescseq;
+static STREscape strescseq;
+static int iofd = 1;
+static int cmdfd;
+static pid_t pid;
+
+static uchar utfbyte[UTF_SIZ + 1] = {0x80,    0, 0xC0, 0xE0, 0xF0};
+static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
+static Rune utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000};
+static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
+
+ssize_t
+xwrite(int fd, const char *s, size_t len)
+{
+	size_t aux = len;
+	ssize_t r;
+
+	while (len > 0) {
+		r = write(fd, s, len);
+		if (r < 0)
+			return r;
+		len -= r;
+		s += r;
+	}
+
+	return aux;
+}
+
+void *
+xmalloc(size_t len)
+{
+	void *p = malloc(len);
+
+	if (!p)
+		die("Out of memory\n");
+
+	return p;
+}
+
+void *
+xrealloc(void *p, size_t len)
+{
+	if ((p = realloc(p, len)) == NULL)
+		die("Out of memory\n");
+
+	return p;
+}
+
+char *
+xstrdup(char *s)
+{
+	if ((s = strdup(s)) == NULL)
+		die("Out of memory\n");
+
+	return s;
+}
+
+size_t
+utf8decode(const char *c, Rune *u, size_t clen)
+{
+	size_t i, j, len, type;
+	Rune udecoded;
+
+	*u = UTF_INVALID;
+	if (!clen)
+		return 0;
+	udecoded = utf8decodebyte(c[0], &len);
+	if (!BETWEEN(len, 1, UTF_SIZ))
+		return 1;
+	for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
+		udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
+		if (type != 0)
+			return j;
+	}
+	if (j < len)
+		return 0;
+	*u = udecoded;
+	utf8validate(u, len);
+
+	return len;
+}
+
+Rune
+utf8decodebyte(char c, size_t *i)
+{
+	for (*i = 0; *i < LEN(utfmask); ++(*i))
+		if (((uchar)c & utfmask[*i]) == utfbyte[*i])
+			return (uchar)c & ~utfmask[*i];
+
+	return 0;
+}
+
+size_t
+utf8encode(Rune u, char *c)
+{
+	size_t len, i;
+
+	len = utf8validate(&u, 0);
+	if (len > UTF_SIZ)
+		return 0;
+
+	for (i = len - 1; i != 0; --i) {
+		c[i] = utf8encodebyte(u, 0);
+		u >>= 6;
+	}
+	c[0] = utf8encodebyte(u, len);
+
+	return len;
+}
+
+char
+utf8encodebyte(Rune u, size_t i)
+{
+	return utfbyte[i] | (u & ~utfmask[i]);
+}
+
+char *
+utf8strchr(char *s, Rune u)
+{
+	Rune r;
+	size_t i, j, len;
+
+	len = strlen(s);
+	for (i = 0, j = 0; i < len; i += j) {
+		if (!(j = utf8decode(&s[i], &r, len - i)))
+			break;
+		if (r == u)
+			return &(s[i]);
+	}
+
+	return NULL;
+}
+
+size_t
+utf8validate(Rune *u, size_t i)
+{
+	if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
+		*u = UTF_INVALID;
+	for (i = 1; *u > utfmax[i]; ++i)
+		;
+
+	return i;
+}
+
+static const char base64_digits[] = {
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0,
+	63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, -1, 0, 0, 0, 0, 1,
+	2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
+	22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34,
+	35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+char
+base64dec_getc(const char **src)
+{
+	while (**src && !isprint(**src)) (*src)++;
+	return *((*src)++);
+}
+
+char *
+base64dec(const char *src)
+{
+	size_t in_len = strlen(src);
+	char *result, *dst;
+
+	if (in_len % 4)
+		in_len += 4 - (in_len % 4);
+	result = dst = xmalloc(in_len / 4 * 3 + 1);
+	while (*src) {
+		int a = base64_digits[(unsigned char) base64dec_getc(&src)];
+		int b = base64_digits[(unsigned char) base64dec_getc(&src)];
+		int c = base64_digits[(unsigned char) base64dec_getc(&src)];
+		int d = base64_digits[(unsigned char) base64dec_getc(&src)];
+
+		*dst++ = (a << 2) | ((b & 0x30) >> 4);
+		if (c == -1)
+			break;
+		*dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
+		if (d == -1)
+			break;
+		*dst++ = ((c & 0x03) << 6) | d;
+	}
+	*dst = '\0';
+	return result;
+}
+
+void
+selinit(void)
+{
+	sel.mode = SEL_IDLE;
+	sel.snap = 0;
+	sel.ob.x = -1;
+}
+
+int
+tlinelen(int y)
+{
+	int i = term.col;
+
+	if (TLINE(y)[i - 1].mode & ATTR_WRAP)
+		return i;
+
+	while (i > 0 && TLINE(y)[i - 1].u == ' ')
+		--i;
+
+	return i;
+}
+
+void
+selstart(int col, int row, int snap)
+{
+	selclear();
+	sel.mode = SEL_EMPTY;
+	sel.type = SEL_REGULAR;
+	sel.snap = snap;
+	sel.oe.x = sel.ob.x = col;
+	sel.oe.y = sel.ob.y = row;
+	selnormalize();
+
+	if (sel.snap != 0)
+		sel.mode = SEL_READY;
+	tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+selextend(int col, int row, int type, int done)
+{
+	int oldey, oldex, oldsby, oldsey, oldtype;
+
+	if (sel.mode == SEL_IDLE)
+		return;
+	if (done && sel.mode == SEL_EMPTY) {
+		selclear();
+		return;
+	}
+
+	oldey = sel.oe.y;
+	oldex = sel.oe.x;
+	oldsby = sel.nb.y;
+	oldsey = sel.ne.y;
+	oldtype = sel.type;
+
+	sel.alt = IS_SET(MODE_ALTSCREEN);
+	sel.oe.x = col;
+	sel.oe.y = row;
+	selnormalize();
+	sel.type = type;
+
+	if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type)
+		tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
+
+	sel.mode = done ? SEL_IDLE : SEL_READY;
+}
+
+void
+selnormalize(void)
+{
+	int i;
+
+	if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
+		sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
+		sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
+	} else {
+		sel.nb.x = MIN(sel.ob.x, sel.oe.x);
+		sel.ne.x = MAX(sel.ob.x, sel.oe.x);
+	}
+	sel.nb.y = MIN(sel.ob.y, sel.oe.y);
+	sel.ne.y = MAX(sel.ob.y, sel.oe.y);
+
+	selsnap(&sel.nb.x, &sel.nb.y, -1);
+	selsnap(&sel.ne.x, &sel.ne.y, +1);
+
+	/* expand selection over line breaks */
+	if (sel.type == SEL_RECTANGULAR)
+		return;
+	i = tlinelen(sel.nb.y);
+	if (i < sel.nb.x)
+		sel.nb.x = i;
+	if (tlinelen(sel.ne.y) <= sel.ne.x)
+		sel.ne.x = term.col - 1;
+}
+
+int
+selected(int x, int y)
+{
+	if (sel.mode == SEL_EMPTY || sel.ob.x == -1 ||
+			sel.alt != IS_SET(MODE_ALTSCREEN))
+		return 0;
+
+	if (sel.type == SEL_RECTANGULAR)
+		return BETWEEN(y, sel.nb.y, sel.ne.y)
+		    && BETWEEN(x, sel.nb.x, sel.ne.x);
+
+	return BETWEEN(y, sel.nb.y, sel.ne.y)
+	    && (y != sel.nb.y || x >= sel.nb.x)
+	    && (y != sel.ne.y || x <= sel.ne.x);
+}
+
+void
+selsnap(int *x, int *y, int direction)
+{
+	int newx, newy, xt, yt;
+	int delim, prevdelim;
+	Glyph *gp, *prevgp;
+
+	switch (sel.snap) {
+	case SNAP_WORD:
+		/*
+		 * Snap around if the word wraps around at the end or
+		 * beginning of a line.
+		 */
+		prevgp = &TLINE(*y)[*x];
+		prevdelim = ISDELIM(prevgp->u);
+		for (;;) {
+			newx = *x + direction;
+			newy = *y;
+			if (!BETWEEN(newx, 0, term.col - 1)) {
+				newy += direction;
+				newx = (newx + term.col) % term.col;
+				if (!BETWEEN(newy, 0, term.row - 1))
+					break;
+
+				if (direction > 0)
+					yt = *y, xt = *x;
+				else
+					yt = newy, xt = newx;
+				if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
+					break;
+			}
+
+			if (newx >= tlinelen(newy))
+				break;
+
+			gp = &TLINE(newy)[newx];
+			delim = ISDELIM(gp->u);
+			if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
+					|| (delim && gp->u != prevgp->u)))
+				break;
+
+			*x = newx;
+			*y = newy;
+			prevgp = gp;
+			prevdelim = delim;
+		}
+		break;
+	case SNAP_LINE:
+		/*
+		 * Snap around if the the previous line or the current one
+		 * has set ATTR_WRAP at its end. Then the whole next or
+		 * previous line will be selected.
+		 */
+		*x = (direction < 0) ? 0 : term.col - 1;
+		if (direction < 0) {
+			for (; *y > 0; *y += direction) {
+				if (!(TLINE(*y-1)[term.col-1].mode
+						& ATTR_WRAP)) {
+					break;
+				}
+			}
+		} else if (direction > 0) {
+			for (; *y < term.row-1; *y += direction) {
+				if (!(TLINE(*y)[term.col-1].mode
+						& ATTR_WRAP)) {
+					break;
+				}
+			}
+		}
+		break;
+	}
+}
+
+char *
+getsel(void)
+{
+	char *str, *ptr;
+	int y, bufsize, lastx, linelen;
+	Glyph *gp, *last;
+
+	if (sel.ob.x == -1)
+		return NULL;
+
+	bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
+	ptr = str = xmalloc(bufsize);
+
+	/* append every set & selected glyph to the selection */
+	for (y = sel.nb.y; y <= sel.ne.y; y++) {
+		if ((linelen = tlinelen(y)) == 0) {
+			*ptr++ = '\n';
+			continue;
+		}
+
+		if (sel.type == SEL_RECTANGULAR) {
+			gp = &TLINE(y)[sel.nb.x];
+			lastx = sel.ne.x;
+		} else {
+			gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
+			lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
+		}
+		last = &TLINE(y)[MIN(lastx, linelen-1)];
+		while (last >= gp && last->u == ' ')
+			--last;
+
+		for ( ; gp <= last; ++gp) {
+			if (gp->mode & ATTR_WDUMMY)
+				continue;
+
+			ptr += utf8encode(gp->u, ptr);
+		}
+
+		/*
+		 * Copy and pasting of line endings is inconsistent
+		 * in the inconsistent terminal and GUI world.
+		 * The best solution seems like to produce '\n' when
+		 * something is copied from st and convert '\n' to
+		 * '\r', when something to be pasted is received by
+		 * st.
+		 * FIXME: Fix the computer world.
+		 */
+		if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
+			*ptr++ = '\n';
+	}
+	*ptr = 0;
+	return str;
+}
+
+void
+selclear(void)
+{
+	if (sel.ob.x == -1)
+		return;
+	sel.mode = SEL_IDLE;
+	sel.ob.x = -1;
+	tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+die(const char *errstr, ...)
+{
+	va_list ap;
+
+	va_start(ap, errstr);
+	vfprintf(stderr, errstr, ap);
+	va_end(ap);
+	exit(1);
+}
+
+void
+execsh(char *cmd, char **args)
+{
+	char *sh, *prog;
+	const struct passwd *pw;
+
+	errno = 0;
+	if ((pw = getpwuid(getuid())) == NULL) {
+		if (errno)
+			die("getpwuid:%s\n", strerror(errno));
+		else
+			die("who are you?\n");
+	}
+
+	if ((sh = getenv("SHELL")) == NULL)
+		sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd;
+
+	if (args)
+		prog = args[0];
+	else if (utmp)
+		prog = utmp;
+	else
+		prog = sh;
+	DEFAULT(args, ((char *[]) {prog, NULL}));
+
+	unsetenv("COLUMNS");
+	unsetenv("LINES");
+	unsetenv("TERMCAP");
+	setenv("LOGNAME", pw->pw_name, 1);
+	setenv("USER", pw->pw_name, 1);
+	setenv("SHELL", sh, 1);
+	setenv("HOME", pw->pw_dir, 1);
+	setenv("TERM", termname, 1);
+
+	signal(SIGCHLD, SIG_DFL);
+	signal(SIGHUP, SIG_DFL);
+	signal(SIGINT, SIG_DFL);
+	signal(SIGQUIT, SIG_DFL);
+	signal(SIGTERM, SIG_DFL);
+	signal(SIGALRM, SIG_DFL);
+
+	execvp(prog, args);
+	_exit(1);
+}
+
+void
+sigchld(int a)
+{
+	int stat;
+	pid_t p;
+
+	if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
+		die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
+
+	if (pid != p)
+		return;
+
+	if (WIFEXITED(stat) && WEXITSTATUS(stat))
+		die("child exited with status %d\n", WEXITSTATUS(stat));
+	else if (WIFSIGNALED(stat))
+		die("child terminated due to signal %d\n", WTERMSIG(stat));
+	exit(0);
+}
+
+void
+stty(char **args)
+{
+	char cmd[_POSIX_ARG_MAX], **p, *q, *s;
+	size_t n, siz;
+
+	if ((n = strlen(stty_args)) > sizeof(cmd)-1)
+		die("incorrect stty parameters\n");
+	memcpy(cmd, stty_args, n);
+	q = cmd + n;
+	siz = sizeof(cmd) - n;
+	for (p = args; p && (s = *p); ++p) {
+		if ((n = strlen(s)) > siz-1)
+			die("stty parameter length too long\n");
+		*q++ = ' ';
+		memcpy(q, s, n);
+		q += n;
+		siz -= n + 1;
+	}
+	*q = '\0';
+	if (system(cmd) != 0)
+		perror("Couldn't call stty");
+}
+
+int
+ttynew(char *line, char *cmd, char *out, char **args)
+{
+	int m, s;
+
+	if (out) {
+		term.mode |= MODE_PRINT;
+		iofd = (!strcmp(out, "-")) ?
+			  1 : open(out, O_WRONLY | O_CREAT, 0666);
+		if (iofd < 0) {
+			fprintf(stderr, "Error opening %s:%s\n",
+				out, strerror(errno));
+		}
+	}
+
+	if (line) {
+		if ((cmdfd = open(line, O_RDWR)) < 0)
+			die("open line failed: %s\n", strerror(errno));
+		dup2(cmdfd, 0);
+		stty(args);
+		return cmdfd;
+	}
+
+	/* seems to work fine on linux, openbsd and freebsd */
+	if (openpty(&m, &s, NULL, NULL, NULL) < 0)
+		die("openpty failed: %s\n", strerror(errno));
+
+	switch (pid = fork()) {
+	case -1:
+		die("fork failed\n");
+		break;
+	case 0:
+		close(iofd);
+		setsid(); /* create a new process group */
+		dup2(s, 0);
+		dup2(s, 1);
+		dup2(s, 2);
+		if (ioctl(s, TIOCSCTTY, NULL) < 0)
+			die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
+		close(s);
+		close(m);
+		execsh(cmd, args);
+		break;
+	default:
+		close(s);
+		cmdfd = m;
+		signal(SIGCHLD, sigchld);
+		break;
+	}
+	return cmdfd;
+}
+
+size_t
+ttyread(void)
+{
+	static char buf[BUFSIZ];
+	static int buflen = 0;
+	int written;
+	int ret;
+
+	/* append read bytes to unprocessed bytes */
+	if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
+		die("Couldn't read from shell: %s\n", strerror(errno));
+	buflen += ret;
+
+	written = twrite(buf, buflen, 0);
+	buflen -= written;
+	/* keep any uncomplete utf8 char for the next call */
+	if (buflen > 0)
+		memmove(buf, buf + written, buflen);
+
+	if (term.scr > 0 && term.scr < HISTSIZE-1)
+		term.scr++;
+
+	return ret;
+}
+
+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);
+
+	if (!IS_SET(MODE_CRLF)) {
+		ttywriteraw(s, n);
+		return;
+	}
+
+	/* This is similar to how the kernel handles ONLCR for ttys */
+	while (n > 0) {
+		if (*s == '\r') {
+			next = s + 1;
+			ttywriteraw("\r\n", 2);
+		} else {
+			next = memchr(s, '\r', n);
+			DEFAULT(next, s + n);
+			ttywriteraw(s, next - s);
+		}
+		n -= next - s;
+		s = next;
+	}
+}
+
+void
+ttywriteraw(const char *s, size_t n)
+{
+	fd_set wfd, rfd;
+	ssize_t r;
+	size_t lim = 256;
+
+	/*
+	 * Remember that we are using a pty, which might be a modem line.
+	 * Writing too much will clog the line. That's why we are doing this
+	 * dance.
+	 * FIXME: Migrate the world to Plan 9.
+	 */
+	while (n > 0) {
+		FD_ZERO(&wfd);
+		FD_ZERO(&rfd);
+		FD_SET(cmdfd, &wfd);
+		FD_SET(cmdfd, &rfd);
+
+		/* Check if we can write. */
+		if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
+			if (errno == EINTR)
+				continue;
+			die("select failed: %s\n", strerror(errno));
+		}
+		if (FD_ISSET(cmdfd, &wfd)) {
+			/*
+			 * Only write the bytes written by ttywrite() or the
+			 * default of 256. This seems to be a reasonable value
+			 * for a serial line. Bigger values might clog the I/O.
+			 */
+			if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
+				goto write_error;
+			if (r < n) {
+				/*
+				 * We weren't able to write out everything.
+				 * This means the buffer is getting full
+				 * again. Empty it.
+				 */
+				if (n < lim)
+					lim = ttyread();
+				n -= r;
+				s += r;
+			} else {
+				/* All bytes have been written. */
+				break;
+			}
+		}
+		if (FD_ISSET(cmdfd, &rfd))
+			lim = ttyread();
+	}
+	return;
+
+write_error:
+	die("write error on tty: %s\n", strerror(errno));
+}
+
+void
+ttyresize(int tw, int th)
+{
+	struct winsize w;
+
+	w.ws_row = term.row;
+	w.ws_col = term.col;
+	w.ws_xpixel = tw;
+	w.ws_ypixel = th;
+	if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
+		fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
+}
+
+void
+ttyhangup()
+{
+	/* Send SIGHUP to shell */
+	kill(pid, SIGHUP);
+}
+
+int
+tattrset(int attr)
+{
+	int i, j;
+
+	for (i = 0; i < term.row-1; i++) {
+		for (j = 0; j < term.col-1; j++) {
+			if (term.line[i][j].mode & attr)
+				return 1;
+		}
+	}
+
+	return 0;
+}
+
+void
+tsetdirt(int top, int bot)
+{
+	int i;
+
+	LIMIT(top, 0, term.row-1);
+	LIMIT(bot, 0, term.row-1);
+
+	for (i = top; i <= bot; i++)
+		term.dirty[i] = 1;
+}
+
+void
+tsetdirtattr(int attr)
+{
+	int i, j;
+
+	for (i = 0; i < term.row-1; i++) {
+		for (j = 0; j < term.col-1; j++) {
+			if (term.line[i][j].mode & attr) {
+				tsetdirt(i, i);
+				break;
+			}
+		}
+	}
+}
+
+void
+tfulldirt(void)
+{
+	tsetdirt(0, term.row-1);
+}
+
+void
+tcursor(int mode)
+{
+	static TCursor c[2];
+	int alt = IS_SET(MODE_ALTSCREEN);
+
+	if (mode == CURSOR_SAVE) {
+		c[alt] = term.c;
+	} else if (mode == CURSOR_LOAD) {
+		term.c = c[alt];
+		tmoveto(c[alt].x, c[alt].y);
+	}
+}
+
+void
+treset(void)
+{
+	uint i;
+
+	term.c = (TCursor){{
+		.mode = ATTR_NULL,
+		.fg = defaultfg,
+		.bg = defaultbg
+	}, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
+
+	memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+	for (i = tabspaces; i < term.col; i += tabspaces)
+		term.tabs[i] = 1;
+	term.top = 0;
+	term.bot = term.row - 1;
+	term.mode = MODE_WRAP|MODE_UTF8;
+	memset(term.trantbl, CS_USA, sizeof(term.trantbl));
+	term.charset = 0;
+
+	for (i = 0; i < 2; i++) {
+		tmoveto(0, 0);
+		tcursor(CURSOR_SAVE);
+		tclearregion(0, 0, term.col-1, term.row-1);
+		tswapscreen();
+	}
+}
+
+void
+tnew(int col, int row)
+{
+	term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
+	tresize(col, row);
+	treset();
+}
+
+void
+tswapscreen(void)
+{
+	Line *tmp = term.line;
+
+	term.line = term.alt;
+	term.alt = tmp;
+	term.mode ^= MODE_ALTSCREEN;
+	tfulldirt();
+}
+
+void
+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);
+
+	for (i = term.bot; i >= orig+n; i--) {
+		temp = term.line[i];
+		term.line[i] = term.line[i-n];
+		term.line[i-n] = temp;
+	}
+
+	selscroll(orig, n);
+}
+
+void
+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;
+	}
+
+	tclearregion(0, orig, term.col-1, orig+n-1);
+	tsetdirt(orig+n, term.bot);
+
+	for (i = orig; i <= term.bot-n; i++) {
+		temp = term.line[i];
+		term.line[i] = term.line[i+n];
+		term.line[i+n] = temp;
+	}
+
+	selscroll(orig, -n);
+}
+
+void
+selscroll(int orig, int n)
+{
+	if (sel.ob.x == -1)
+		return;
+
+	if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
+		if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
+			selclear();
+			return;
+		}
+		if (sel.type == SEL_RECTANGULAR) {
+			if (sel.ob.y < term.top)
+				sel.ob.y = term.top;
+			if (sel.oe.y > term.bot)
+				sel.oe.y = term.bot;
+		} else {
+			if (sel.ob.y < term.top) {
+				sel.ob.y = term.top;
+				sel.ob.x = 0;
+			}
+			if (sel.oe.y > term.bot) {
+				sel.oe.y = term.bot;
+				sel.oe.x = term.col;
+			}
+		}
+		selnormalize();
+	}
+}
+
+void
+tnewline(int first_col)
+{
+	int y = term.c.y;
+
+	if (y == term.bot) {
+		tscrollup(term.top, 1, 1);
+	} else {
+		y++;
+	}
+	tmoveto(first_col ? 0 : term.c.x, y);
+}
+
+void
+csiparse(void)
+{
+	char *p = csiescseq.buf, *np;
+	long int v;
+
+	csiescseq.narg = 0;
+	if (*p == '?') {
+		csiescseq.priv = 1;
+		p++;
+	}
+
+	csiescseq.buf[csiescseq.len] = '\0';
+	while (p < csiescseq.buf+csiescseq.len) {
+		np = NULL;
+		v = strtol(p, &np, 10);
+		if (np == p)
+			v = 0;
+		if (v == LONG_MAX || v == LONG_MIN)
+			v = -1;
+		csiescseq.arg[csiescseq.narg++] = v;
+		p = np;
+		if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
+			break;
+		p++;
+	}
+	csiescseq.mode[0] = *p++;
+	csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
+}
+
+/* for absolute user moves, when decom is set */
+void
+tmoveato(int x, int y)
+{
+	tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
+}
+
+void
+tmoveto(int x, int y)
+{
+	int miny, maxy;
+
+	if (term.c.state & CURSOR_ORIGIN) {
+		miny = term.top;
+		maxy = term.bot;
+	} else {
+		miny = 0;
+		maxy = term.row - 1;
+	}
+	term.c.state &= ~CURSOR_WRAPNEXT;
+	term.c.x = LIMIT(x, 0, term.col-1);
+	term.c.y = LIMIT(y, miny, maxy);
+}
+
+void
+tsetchar(Rune u, Glyph *attr, int x, int y)
+{
+	static char *vt100_0[62] = { /* 0x41 - 0x7e */
+		"↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
+		0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
+		0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
+		0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
+		"◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
+		"␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
+		"⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
+		"│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
+	};
+
+	/*
+	 * The table is proudly stolen from rxvt.
+	 */
+	if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
+	   BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
+		utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
+
+	if (term.line[y][x].mode & ATTR_WIDE) {
+		if (x+1 < term.col) {
+			term.line[y][x+1].u = ' ';
+			term.line[y][x+1].mode &= ~ATTR_WDUMMY;
+		}
+	} else if (term.line[y][x].mode & ATTR_WDUMMY) {
+		term.line[y][x-1].u = ' ';
+		term.line[y][x-1].mode &= ~ATTR_WIDE;
+	}
+
+	term.dirty[y] = 1;
+	term.line[y][x] = *attr;
+	term.line[y][x].u = u;
+}
+
+void
+tclearregion(int x1, int y1, int x2, int y2)
+{
+	int x, y, temp;
+	Glyph *gp;
+
+	if (x1 > x2)
+		temp = x1, x1 = x2, x2 = temp;
+	if (y1 > y2)
+		temp = y1, y1 = y2, y2 = temp;
+
+	LIMIT(x1, 0, term.col-1);
+	LIMIT(x2, 0, term.col-1);
+	LIMIT(y1, 0, term.row-1);
+	LIMIT(y2, 0, term.row-1);
+
+	for (y = y1; y <= y2; y++) {
+		term.dirty[y] = 1;
+		for (x = x1; x <= x2; x++) {
+			gp = &term.line[y][x];
+			if (selected(x, y))
+				selclear();
+			gp->fg = term.c.attr.fg;
+			gp->bg = term.c.attr.bg;
+			gp->mode = 0;
+			gp->u = ' ';
+		}
+	}
+}
+
+void
+tdeletechar(int n)
+{
+	int dst, src, size;
+	Glyph *line;
+
+	LIMIT(n, 0, term.col - term.c.x);
+
+	dst = term.c.x;
+	src = term.c.x + n;
+	size = term.col - src;
+	line = term.line[term.c.y];
+
+	memmove(&line[dst], &line[src], size * sizeof(Glyph));
+	tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
+}
+
+void
+tinsertblank(int n)
+{
+	int dst, src, size;
+	Glyph *line;
+
+	LIMIT(n, 0, term.col - term.c.x);
+
+	dst = term.c.x + n;
+	src = term.c.x;
+	size = term.col - dst;
+	line = term.line[term.c.y];
+
+	memmove(&line[dst], &line[src], size * sizeof(Glyph));
+	tclearregion(src, term.c.y, dst - 1, term.c.y);
+}
+
+void
+tinsertblankline(int n)
+{
+	if (BETWEEN(term.c.y, term.top, term.bot))
+		tscrolldown(term.c.y, n, 0);
+}
+
+void
+tdeleteline(int n)
+{
+	if (BETWEEN(term.c.y, term.top, term.bot))
+		tscrollup(term.c.y, n, 0);
+}
+
+int32_t
+tdefcolor(int *attr, int *npar, int l)
+{
+	int32_t idx = -1;
+	uint r, g, b;
+
+	switch (attr[*npar + 1]) {
+	case 2: /* direct color in RGB space */
+		if (*npar + 4 >= l) {
+			fprintf(stderr,
+				"erresc(38): Incorrect number of parameters (%d)\n",
+				*npar);
+			break;
+		}
+		r = attr[*npar + 2];
+		g = attr[*npar + 3];
+		b = attr[*npar + 4];
+		*npar += 4;
+		if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
+			fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
+				r, g, b);
+		else
+			idx = TRUECOLOR(r, g, b);
+		break;
+	case 5: /* indexed color */
+		if (*npar + 2 >= l) {
+			fprintf(stderr,
+				"erresc(38): Incorrect number of parameters (%d)\n",
+				*npar);
+			break;
+		}
+		*npar += 2;
+		if (!BETWEEN(attr[*npar], 0, 255))
+			fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
+		else
+			idx = attr[*npar];
+		break;
+	case 0: /* implemented defined (only foreground) */
+	case 1: /* transparent */
+	case 3: /* direct color in CMY space */
+	case 4: /* direct color in CMYK space */
+	default:
+		fprintf(stderr,
+		        "erresc(38): gfx attr %d unknown\n", attr[*npar]);
+		break;
+	}
+
+	return idx;
+}
+
+void
+tsetattr(int *attr, int l)
+{
+	int i;
+	int32_t idx;
+
+	for (i = 0; i < l; i++) {
+		switch (attr[i]) {
+		case 0:
+			term.c.attr.mode &= ~(
+				ATTR_BOLD       |
+				ATTR_FAINT      |
+				ATTR_ITALIC     |
+				ATTR_UNDERLINE  |
+				ATTR_BLINK      |
+				ATTR_REVERSE    |
+				ATTR_INVISIBLE  |
+				ATTR_STRUCK     );
+			term.c.attr.fg = defaultfg;
+			term.c.attr.bg = defaultbg;
+			break;
+		case 1:
+			term.c.attr.mode |= ATTR_BOLD;
+			break;
+		case 2:
+			term.c.attr.mode |= ATTR_FAINT;
+			break;
+		case 3:
+			term.c.attr.mode |= ATTR_ITALIC;
+			break;
+		case 4:
+			term.c.attr.mode |= ATTR_UNDERLINE;
+			break;
+		case 5: /* slow blink */
+			/* FALLTHROUGH */
+		case 6: /* rapid blink */
+			term.c.attr.mode |= ATTR_BLINK;
+			break;
+		case 7:
+			term.c.attr.mode |= ATTR_REVERSE;
+			break;
+		case 8:
+			term.c.attr.mode |= ATTR_INVISIBLE;
+			break;
+		case 9:
+			term.c.attr.mode |= ATTR_STRUCK;
+			break;
+		case 22:
+			term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
+			break;
+		case 23:
+			term.c.attr.mode &= ~ATTR_ITALIC;
+			break;
+		case 24:
+			term.c.attr.mode &= ~ATTR_UNDERLINE;
+			break;
+		case 25:
+			term.c.attr.mode &= ~ATTR_BLINK;
+			break;
+		case 27:
+			term.c.attr.mode &= ~ATTR_REVERSE;
+			break;
+		case 28:
+			term.c.attr.mode &= ~ATTR_INVISIBLE;
+			break;
+		case 29:
+			term.c.attr.mode &= ~ATTR_STRUCK;
+			break;
+		case 38:
+			if ((idx = tdefcolor(attr, &i, l)) >= 0)
+				term.c.attr.fg = idx;
+			break;
+		case 39:
+			term.c.attr.fg = defaultfg;
+			break;
+		case 48:
+			if ((idx = tdefcolor(attr, &i, l)) >= 0)
+				term.c.attr.bg = idx;
+			break;
+		case 49:
+			term.c.attr.bg = defaultbg;
+			break;
+		default:
+			if (BETWEEN(attr[i], 30, 37)) {
+				term.c.attr.fg = attr[i] - 30;
+			} else if (BETWEEN(attr[i], 40, 47)) {
+				term.c.attr.bg = attr[i] - 40;
+			} else if (BETWEEN(attr[i], 90, 97)) {
+				term.c.attr.fg = attr[i] - 90 + 8;
+			} else if (BETWEEN(attr[i], 100, 107)) {
+				term.c.attr.bg = attr[i] - 100 + 8;
+			} else {
+				fprintf(stderr,
+					"erresc(default): gfx attr %d unknown\n",
+					attr[i]);
+				csidump();
+			}
+			break;
+		}
+	}
+}
+
+void
+tsetscroll(int t, int b)
+{
+	int temp;
+
+	LIMIT(t, 0, term.row-1);
+	LIMIT(b, 0, term.row-1);
+	if (t > b) {
+		temp = t;
+		t = b;
+		b = temp;
+	}
+	term.top = t;
+	term.bot = b;
+}
+
+void
+tsetmode(int priv, int set, int *args, int narg)
+{
+	int alt, *lim;
+
+	for (lim = args + narg; args < lim; ++args) {
+		if (priv) {
+			switch (*args) {
+			case 1: /* DECCKM -- Cursor key */
+				xsetmode(set, MODE_APPCURSOR);
+				break;
+			case 5: /* DECSCNM -- Reverse video */
+				xsetmode(set, MODE_REVERSE);
+				break;
+			case 6: /* DECOM -- Origin */
+				MODBIT(term.c.state, set, CURSOR_ORIGIN);
+				tmoveato(0, 0);
+				break;
+			case 7: /* DECAWM -- Auto wrap */
+				MODBIT(term.mode, set, MODE_WRAP);
+				break;
+			case 0:  /* Error (IGNORED) */
+			case 2:  /* DECANM -- ANSI/VT52 (IGNORED) */
+			case 3:  /* DECCOLM -- Column  (IGNORED) */
+			case 4:  /* DECSCLM -- Scroll (IGNORED) */
+			case 8:  /* DECARM -- Auto repeat (IGNORED) */
+			case 18: /* DECPFF -- Printer feed (IGNORED) */
+			case 19: /* DECPEX -- Printer extent (IGNORED) */
+			case 42: /* DECNRCM -- National characters (IGNORED) */
+			case 12: /* att610 -- Start blinking cursor (IGNORED) */
+				break;
+			case 25: /* DECTCEM -- Text Cursor Enable Mode */
+				xsetmode(!set, MODE_HIDE);
+				break;
+			case 9:    /* X10 mouse compatibility mode */
+				xsetpointermotion(0);
+				xsetmode(0, MODE_MOUSE);
+				xsetmode(set, MODE_MOUSEX10);
+				break;
+			case 1000: /* 1000: report button press */
+				xsetpointermotion(0);
+				xsetmode(0, MODE_MOUSE);
+				xsetmode(set, MODE_MOUSEBTN);
+				break;
+			case 1002: /* 1002: report motion on button press */
+				xsetpointermotion(0);
+				xsetmode(0, MODE_MOUSE);
+				xsetmode(set, MODE_MOUSEMOTION);
+				break;
+			case 1003: /* 1003: enable all mouse motions */
+				xsetpointermotion(set);
+				xsetmode(0, MODE_MOUSE);
+				xsetmode(set, MODE_MOUSEMANY);
+				break;
+			case 1004: /* 1004: send focus events to tty */
+				xsetmode(set, MODE_FOCUS);
+				break;
+			case 1006: /* 1006: extended reporting mode */
+				xsetmode(set, MODE_MOUSESGR);
+				break;
+			case 1034:
+				xsetmode(set, MODE_8BIT);
+				break;
+			case 1049: /* swap screen & set/restore cursor as xterm */
+				if (!allowaltscreen)
+					break;
+				tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
+				/* FALLTHROUGH */
+			case 47: /* swap screen */
+			case 1047:
+				if (!allowaltscreen)
+					break;
+				alt = IS_SET(MODE_ALTSCREEN);
+				if (alt) {
+					tclearregion(0, 0, term.col-1,
+							term.row-1);
+				}
+				if (set ^ alt) /* set is always 1 or 0 */
+					tswapscreen();
+				if (*args != 1049)
+					break;
+				/* FALLTHROUGH */
+			case 1048:
+				tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
+				break;
+			case 2004: /* 2004: bracketed paste mode */
+				xsetmode(set, MODE_BRCKTPASTE);
+				break;
+			/* Not implemented mouse modes. See comments there. */
+			case 1001: /* mouse highlight mode; can hang the
+				      terminal by design when implemented. */
+			case 1005: /* UTF-8 mouse mode; will confuse
+				      applications not supporting UTF-8
+				      and luit. */
+			case 1015: /* urxvt mangled mouse mode; incompatible
+				      and can be mistaken for other control
+				      codes. */
+			default:
+				fprintf(stderr,
+					"erresc: unknown private set/reset mode %d\n",
+					*args);
+				break;
+			}
+		} else {
+			switch (*args) {
+			case 0:  /* Error (IGNORED) */
+				break;
+			case 2:
+				xsetmode(set, MODE_KBDLOCK);
+				break;
+			case 4:  /* IRM -- Insertion-replacement */
+				MODBIT(term.mode, set, MODE_INSERT);
+				break;
+			case 12: /* SRM -- Send/Receive */
+				MODBIT(term.mode, !set, MODE_ECHO);
+				break;
+			case 20: /* LNM -- Linefeed/new line */
+				MODBIT(term.mode, set, MODE_CRLF);
+				break;
+			default:
+				fprintf(stderr,
+					"erresc: unknown set/reset mode %d\n",
+					*args);
+				break;
+			}
+		}
+	}
+}
+
+void
+csihandle(void)
+{
+	char buf[40];
+	int len;
+
+	switch (csiescseq.mode[0]) {
+	default:
+	unknown:
+		fprintf(stderr, "erresc: unknown csi ");
+		csidump();
+		/* die(""); */
+		break;
+	case '@': /* ICH -- Insert <n> blank char */
+		DEFAULT(csiescseq.arg[0], 1);
+		tinsertblank(csiescseq.arg[0]);
+		break;
+	case 'A': /* CUU -- Cursor <n> Up */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
+		break;
+	case 'B': /* CUD -- Cursor <n> Down */
+	case 'e': /* VPR --Cursor <n> Down */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
+		break;
+	case 'i': /* MC -- Media Copy */
+		switch (csiescseq.arg[0]) {
+		case 0:
+			tdump();
+			break;
+		case 1:
+			tdumpline(term.c.y);
+			break;
+		case 2:
+			tdumpsel();
+			break;
+		case 4:
+			term.mode &= ~MODE_PRINT;
+			break;
+		case 5:
+			term.mode |= MODE_PRINT;
+			break;
+		}
+		break;
+	case 'c': /* DA -- Device Attributes */
+		if (csiescseq.arg[0] == 0)
+			ttywrite(vtiden, strlen(vtiden), 0);
+		break;
+	case 'C': /* CUF -- Cursor <n> Forward */
+	case 'a': /* HPR -- Cursor <n> Forward */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
+		break;
+	case 'D': /* CUB -- Cursor <n> Backward */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
+		break;
+	case 'E': /* CNL -- Cursor <n> Down and first col */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(0, term.c.y+csiescseq.arg[0]);
+		break;
+	case 'F': /* CPL -- Cursor <n> Up and first col */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(0, term.c.y-csiescseq.arg[0]);
+		break;
+	case 'g': /* TBC -- Tabulation clear */
+		switch (csiescseq.arg[0]) {
+		case 0: /* clear current tab stop */
+			term.tabs[term.c.x] = 0;
+			break;
+		case 3: /* clear all the tabs */
+			memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+			break;
+		default:
+			goto unknown;
+		}
+		break;
+	case 'G': /* CHA -- Move to <col> */
+	case '`': /* HPA */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(csiescseq.arg[0]-1, term.c.y);
+		break;
+	case 'H': /* CUP -- Move to <row> <col> */
+	case 'f': /* HVP */
+		DEFAULT(csiescseq.arg[0], 1);
+		DEFAULT(csiescseq.arg[1], 1);
+		tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
+		break;
+	case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
+		DEFAULT(csiescseq.arg[0], 1);
+		tputtab(csiescseq.arg[0]);
+		break;
+	case 'J': /* ED -- Clear screen */
+		switch (csiescseq.arg[0]) {
+		case 0: /* below */
+			tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
+			if (term.c.y < term.row-1) {
+				tclearregion(0, term.c.y+1, term.col-1,
+						term.row-1);
+			}
+			break;
+		case 1: /* above */
+			if (term.c.y > 1)
+				tclearregion(0, 0, term.col-1, term.c.y-1);
+			tclearregion(0, term.c.y, term.c.x, term.c.y);
+			break;
+		case 2: /* all */
+			tclearregion(0, 0, term.col-1, term.row-1);
+			break;
+		default:
+			goto unknown;
+		}
+		break;
+	case 'K': /* EL -- Clear line */
+		switch (csiescseq.arg[0]) {
+		case 0: /* right */
+			tclearregion(term.c.x, term.c.y, term.col-1,
+					term.c.y);
+			break;
+		case 1: /* left */
+			tclearregion(0, term.c.y, term.c.x, term.c.y);
+			break;
+		case 2: /* all */
+			tclearregion(0, term.c.y, term.col-1, term.c.y);
+			break;
+		}
+		break;
+	case 'S': /* SU -- Scroll <n> line up */
+		DEFAULT(csiescseq.arg[0], 1);
+		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], 0);
+		break;
+	case 'L': /* IL -- Insert <n> blank lines */
+		DEFAULT(csiescseq.arg[0], 1);
+		tinsertblankline(csiescseq.arg[0]);
+		break;
+	case 'l': /* RM -- Reset Mode */
+		tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
+		break;
+	case 'M': /* DL -- Delete <n> lines */
+		DEFAULT(csiescseq.arg[0], 1);
+		tdeleteline(csiescseq.arg[0]);
+		break;
+	case 'X': /* ECH -- Erase <n> char */
+		DEFAULT(csiescseq.arg[0], 1);
+		tclearregion(term.c.x, term.c.y,
+				term.c.x + csiescseq.arg[0] - 1, term.c.y);
+		break;
+	case 'P': /* DCH -- Delete <n> char */
+		DEFAULT(csiescseq.arg[0], 1);
+		tdeletechar(csiescseq.arg[0]);
+		break;
+	case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
+		DEFAULT(csiescseq.arg[0], 1);
+		tputtab(-csiescseq.arg[0]);
+		break;
+	case 'd': /* VPA -- Move to <row> */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveato(term.c.x, csiescseq.arg[0]-1);
+		break;
+	case 'h': /* SM -- Set terminal mode */
+		tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
+		break;
+	case 'm': /* SGR -- Terminal attribute (color) */
+		tsetattr(csiescseq.arg, csiescseq.narg);
+		break;
+	case 'n': /* DSR – Device Status Report (cursor position) */
+		if (csiescseq.arg[0] == 6) {
+			len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
+					term.c.y+1, term.c.x+1);
+			ttywrite(buf, len, 0);
+		}
+		break;
+	case 'r': /* DECSTBM -- Set Scrolling Region */
+		if (csiescseq.priv) {
+			goto unknown;
+		} else {
+			DEFAULT(csiescseq.arg[0], 1);
+			DEFAULT(csiescseq.arg[1], term.row);
+			tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
+			tmoveato(0, 0);
+		}
+		break;
+	case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
+		tcursor(CURSOR_SAVE);
+		break;
+	case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
+		tcursor(CURSOR_LOAD);
+		break;
+	case ' ':
+		switch (csiescseq.mode[1]) {
+		case 'q': /* DECSCUSR -- Set Cursor Style */
+			if (xsetcursor(csiescseq.arg[0]))
+				goto unknown;
+			break;
+		default:
+			goto unknown;
+		}
+		break;
+	}
+}
+
+void
+csidump(void)
+{
+	int i;
+	uint c;
+
+	fprintf(stderr, "ESC[");
+	for (i = 0; i < csiescseq.len; i++) {
+		c = csiescseq.buf[i] & 0xff;
+		if (isprint(c)) {
+			putc(c, stderr);
+		} else if (c == '\n') {
+			fprintf(stderr, "(\\n)");
+		} else if (c == '\r') {
+			fprintf(stderr, "(\\r)");
+		} else if (c == 0x1b) {
+			fprintf(stderr, "(\\e)");
+		} else {
+			fprintf(stderr, "(%02x)", c);
+		}
+	}
+	putc('\n', stderr);
+}
+
+void
+csireset(void)
+{
+	memset(&csiescseq, 0, sizeof(csiescseq));
+}
+
+void
+strhandle(void)
+{
+	char *p = NULL;
+	int j, narg, par;
+
+	term.esc &= ~(ESC_STR_END|ESC_STR);
+	strparse();
+	par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
+
+	switch (strescseq.type) {
+	case ']': /* OSC -- Operating System Command */
+		switch (par) {
+		case 0:
+		case 1:
+		case 2:
+			if (narg > 1)
+				xsettitle(strescseq.args[1]);
+			return;
+		case 52:
+			if (narg > 2) {
+				char *dec;
+
+				dec = base64dec(strescseq.args[2]);
+				if (dec) {
+					xsetsel(dec);
+					xclipcopy();
+				} else {
+					fprintf(stderr, "erresc: invalid base64\n");
+				}
+			}
+			return;
+		case 4: /* color set */
+			if (narg < 3)
+				break;
+			p = strescseq.args[2];
+			/* FALLTHROUGH */
+		case 104: /* color reset, here p = NULL */
+			j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
+			if (xsetcolorname(j, p)) {
+				fprintf(stderr, "erresc: invalid color %s\n", p);
+			} else {
+				/*
+				 * TODO if defaultbg color is changed, borders
+				 * are dirty
+				 */
+				redraw();
+			}
+			return;
+		}
+		break;
+	case 'k': /* old title set compatibility */
+		xsettitle(strescseq.args[0]);
+		return;
+	case 'P': /* DCS -- Device Control String */
+		term.mode |= ESC_DCS;
+	case '_': /* APC -- Application Program Command */
+	case '^': /* PM -- Privacy Message */
+		return;
+	}
+
+	fprintf(stderr, "erresc: unknown str ");
+	strdump();
+}
+
+void
+strparse(void)
+{
+	int c;
+	char *p = strescseq.buf;
+
+	strescseq.narg = 0;
+	strescseq.buf[strescseq.len] = '\0';
+
+	if (*p == '\0')
+		return;
+
+	while (strescseq.narg < STR_ARG_SIZ) {
+		strescseq.args[strescseq.narg++] = p;
+		while ((c = *p) != ';' && c != '\0')
+			++p;
+		if (c == '\0')
+			return;
+		*p++ = '\0';
+	}
+}
+
+void
+strdump(void)
+{
+	int i;
+	uint c;
+
+	fprintf(stderr, "ESC%c", strescseq.type);
+	for (i = 0; i < strescseq.len; i++) {
+		c = strescseq.buf[i] & 0xff;
+		if (c == '\0') {
+			putc('\n', stderr);
+			return;
+		} else if (isprint(c)) {
+			putc(c, stderr);
+		} else if (c == '\n') {
+			fprintf(stderr, "(\\n)");
+		} else if (c == '\r') {
+			fprintf(stderr, "(\\r)");
+		} else if (c == 0x1b) {
+			fprintf(stderr, "(\\e)");
+		} else {
+			fprintf(stderr, "(%02x)", c);
+		}
+	}
+	fprintf(stderr, "ESC\\\n");
+}
+
+void
+strreset(void)
+{
+	memset(&strescseq, 0, sizeof(strescseq));
+}
+
+void
+sendbreak(const Arg *arg)
+{
+	if (tcsendbreak(cmdfd, 0))
+		perror("Error sending break");
+}
+
+void
+tprinter(char *s, size_t len)
+{
+	if (iofd != -1 && xwrite(iofd, s, len) < 0) {
+		perror("Error writing to output file");
+		close(iofd);
+		iofd = -1;
+	}
+}
+
+void
+externalpipe(const Arg *arg)
+{
+	int to[2];
+	char buf[UTF_SIZ];
+	void (*oldsigpipe)(int);
+	Glyph *bp, *end;
+	int lastpos, n, newline;
+
+	if (pipe(to) == -1)
+		return;
+
+	switch (fork()) {
+	case -1:
+		close(to[0]);
+		close(to[1]);
+		return;
+	case 0:
+		dup2(to[0], STDIN_FILENO);
+		close(to[0]);
+		close(to[1]);
+		execvp(((char **)arg->v)[0], (char **)arg->v);
+		fprintf(stderr, "st: execvp %s\n", ((char **)arg->v)[0]);
+		perror("failed");
+		exit(0);
+	}
+
+	close(to[0]);
+	/* ignore sigpipe for now, in case child exists early */
+	oldsigpipe = signal(SIGPIPE, SIG_IGN);
+	newline = 0;
+	for (n = 0; n < term.row; n++) {
+		bp = term.line[n];
+		lastpos = MIN(tlinelen(n) + 1, term.col) - 1;
+		if (lastpos < 0)
+			break;
+		end = &bp[lastpos + 1];
+		for (; bp < end; ++bp)
+			if (xwrite(to[1], buf, utf8encode(bp->u, buf)) < 0)
+				break;
+		if ((newline = term.line[n][lastpos].mode & ATTR_WRAP))
+			continue;
+		if (xwrite(to[1], "\n", 1) < 0)
+			break;
+		newline = 0;
+	}
+	if (newline)
+		(void)xwrite(to[1], "\n", 1);
+	close(to[1]);
+	/* restore */
+	signal(SIGPIPE, oldsigpipe);
+}
+
+void
+iso14755(const Arg *arg)
+{
+	FILE *p;
+	char *us, *e, codepoint[9], uc[UTF_SIZ];
+	unsigned long utf32;
+
+	if (!(p = popen(ISO14755CMD, "r")))
+		return;
+
+	us = fgets(codepoint, sizeof(codepoint), p);
+	pclose(p);
+
+	if (!us || *us == '\0' || *us == '-' || strlen(us) > 7)
+		return;
+	if ((utf32 = strtoul(us, &e, 16)) == ULONG_MAX ||
+	    (*e != '\n' && *e != '\0'))
+		return;
+
+	ttywrite(uc, utf8encode(utf32, uc), 1);
+}
+
+void
+toggleprinter(const Arg *arg)
+{
+	term.mode ^= MODE_PRINT;
+}
+
+void
+printscreen(const Arg *arg)
+{
+	tdump();
+}
+
+void
+printsel(const Arg *arg)
+{
+	tdumpsel();
+}
+
+void
+tdumpsel(void)
+{
+	char *ptr;
+
+	if ((ptr = getsel())) {
+		tprinter(ptr, strlen(ptr));
+		free(ptr);
+	}
+}
+
+void
+tdumpline(int n)
+{
+	char buf[UTF_SIZ];
+	Glyph *bp, *end;
+
+	bp = &term.line[n][0];
+	end = &bp[MIN(tlinelen(n), term.col) - 1];
+	if (bp != end || bp->u != ' ') {
+		for ( ;bp <= end; ++bp)
+			tprinter(buf, utf8encode(bp->u, buf));
+	}
+	tprinter("\n", 1);
+}
+
+void
+tdump(void)
+{
+	int i;
+
+	for (i = 0; i < term.row; ++i)
+		tdumpline(i);
+}
+
+void
+tputtab(int n)
+{
+	uint x = term.c.x;
+
+	if (n > 0) {
+		while (x < term.col && n--)
+			for (++x; x < term.col && !term.tabs[x]; ++x)
+				/* nothing */ ;
+	} else if (n < 0) {
+		while (x > 0 && n++)
+			for (--x; x > 0 && !term.tabs[x]; --x)
+				/* nothing */ ;
+	}
+	term.c.x = LIMIT(x, 0, term.col-1);
+}
+
+void
+tdefutf8(char ascii)
+{
+	if (ascii == 'G')
+		term.mode |= MODE_UTF8;
+	else if (ascii == '@')
+		term.mode &= ~MODE_UTF8;
+}
+
+void
+tdeftran(char ascii)
+{
+	static char cs[] = "0B";
+	static int vcs[] = {CS_GRAPHIC0, CS_USA};
+	char *p;
+
+	if ((p = strchr(cs, ascii)) == NULL) {
+		fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
+	} else {
+		term.trantbl[term.icharset] = vcs[p - cs];
+	}
+}
+
+void
+tdectest(char c)
+{
+	int x, y;
+
+	if (c == '8') { /* DEC screen alignment test. */
+		for (x = 0; x < term.col; ++x) {
+			for (y = 0; y < term.row; ++y)
+				tsetchar('E', &term.c.attr, x, y);
+		}
+	}
+}
+
+void
+tstrsequence(uchar c)
+{
+	strreset();
+
+	switch (c) {
+	case 0x90:   /* DCS -- Device Control String */
+		c = 'P';
+		term.esc |= ESC_DCS;
+		break;
+	case 0x9f:   /* APC -- Application Program Command */
+		c = '_';
+		break;
+	case 0x9e:   /* PM -- Privacy Message */
+		c = '^';
+		break;
+	case 0x9d:   /* OSC -- Operating System Command */
+		c = ']';
+		break;
+	}
+	strescseq.type = c;
+	term.esc |= ESC_STR;
+}
+
+void
+tcontrolcode(uchar ascii)
+{
+	switch (ascii) {
+	case '\t':   /* HT */
+		tputtab(1);
+		return;
+	case '\b':   /* BS */
+		tmoveto(term.c.x-1, term.c.y);
+		return;
+	case '\r':   /* CR */
+		tmoveto(0, term.c.y);
+		return;
+	case '\f':   /* LF */
+	case '\v':   /* VT */
+	case '\n':   /* LF */
+		/* go to first col if the mode is set */
+		tnewline(IS_SET(MODE_CRLF));
+		return;
+	case '\a':   /* BEL */
+		if (term.esc & ESC_STR_END) {
+			/* backwards compatibility to xterm */
+			strhandle();
+		} else {
+			xbell();
+		}
+		break;
+	case '\033': /* ESC */
+		csireset();
+		term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
+		term.esc |= ESC_START;
+		return;
+	case '\016': /* SO (LS1 -- Locking shift 1) */
+	case '\017': /* SI (LS0 -- Locking shift 0) */
+		term.charset = 1 - (ascii - '\016');
+		return;
+	case '\032': /* SUB */
+		tsetchar('?', &term.c.attr, term.c.x, term.c.y);
+	case '\030': /* CAN */
+		csireset();
+		break;
+	case '\005': /* ENQ (IGNORED) */
+	case '\000': /* NUL (IGNORED) */
+	case '\021': /* XON (IGNORED) */
+	case '\023': /* XOFF (IGNORED) */
+	case 0177:   /* DEL (IGNORED) */
+		return;
+	case 0x80:   /* TODO: PAD */
+	case 0x81:   /* TODO: HOP */
+	case 0x82:   /* TODO: BPH */
+	case 0x83:   /* TODO: NBH */
+	case 0x84:   /* TODO: IND */
+		break;
+	case 0x85:   /* NEL -- Next line */
+		tnewline(1); /* always go to first col */
+		break;
+	case 0x86:   /* TODO: SSA */
+	case 0x87:   /* TODO: ESA */
+		break;
+	case 0x88:   /* HTS -- Horizontal tab stop */
+		term.tabs[term.c.x] = 1;
+		break;
+	case 0x89:   /* TODO: HTJ */
+	case 0x8a:   /* TODO: VTS */
+	case 0x8b:   /* TODO: PLD */
+	case 0x8c:   /* TODO: PLU */
+	case 0x8d:   /* TODO: RI */
+	case 0x8e:   /* TODO: SS2 */
+	case 0x8f:   /* TODO: SS3 */
+	case 0x91:   /* TODO: PU1 */
+	case 0x92:   /* TODO: PU2 */
+	case 0x93:   /* TODO: STS */
+	case 0x94:   /* TODO: CCH */
+	case 0x95:   /* TODO: MW */
+	case 0x96:   /* TODO: SPA */
+	case 0x97:   /* TODO: EPA */
+	case 0x98:   /* TODO: SOS */
+	case 0x99:   /* TODO: SGCI */
+		break;
+	case 0x9a:   /* DECID -- Identify Terminal */
+		ttywrite(vtiden, strlen(vtiden), 0);
+		break;
+	case 0x9b:   /* TODO: CSI */
+	case 0x9c:   /* TODO: ST */
+		break;
+	case 0x90:   /* DCS -- Device Control String */
+	case 0x9d:   /* OSC -- Operating System Command */
+	case 0x9e:   /* PM -- Privacy Message */
+	case 0x9f:   /* APC -- Application Program Command */
+		tstrsequence(ascii);
+		return;
+	}
+	/* only CAN, SUB, \a and C1 chars interrupt a sequence */
+	term.esc &= ~(ESC_STR_END|ESC_STR);
+}
+
+/*
+ * returns 1 when the sequence is finished and it hasn't to read
+ * more characters for this sequence, otherwise 0
+ */
+int
+eschandle(uchar ascii)
+{
+	switch (ascii) {
+	case '[':
+		term.esc |= ESC_CSI;
+		return 0;
+	case '#':
+		term.esc |= ESC_TEST;
+		return 0;
+	case '%':
+		term.esc |= ESC_UTF8;
+		return 0;
+	case 'P': /* DCS -- Device Control String */
+	case '_': /* APC -- Application Program Command */
+	case '^': /* PM -- Privacy Message */
+	case ']': /* OSC -- Operating System Command */
+	case 'k': /* old title set compatibility */
+		tstrsequence(ascii);
+		return 0;
+	case 'n': /* LS2 -- Locking shift 2 */
+	case 'o': /* LS3 -- Locking shift 3 */
+		term.charset = 2 + (ascii - 'n');
+		break;
+	case '(': /* GZD4 -- set primary charset G0 */
+	case ')': /* G1D4 -- set secondary charset G1 */
+	case '*': /* G2D4 -- set tertiary charset G2 */
+	case '+': /* G3D4 -- set quaternary charset G3 */
+		term.icharset = ascii - '(';
+		term.esc |= ESC_ALTCHARSET;
+		return 0;
+	case 'D': /* IND -- Linefeed */
+		if (term.c.y == term.bot) {
+			tscrollup(term.top, 1, 1);
+		} else {
+			tmoveto(term.c.x, term.c.y+1);
+		}
+		break;
+	case 'E': /* NEL -- Next line */
+		tnewline(1); /* always go to first col */
+		break;
+	case 'H': /* HTS -- Horizontal tab stop */
+		term.tabs[term.c.x] = 1;
+		break;
+	case 'M': /* RI -- Reverse index */
+		if (term.c.y == term.top) {
+			tscrolldown(term.top, 1, 1);
+		} else {
+			tmoveto(term.c.x, term.c.y-1);
+		}
+		break;
+	case 'Z': /* DECID -- Identify Terminal */
+		ttywrite(vtiden, strlen(vtiden), 0);
+		break;
+	case 'c': /* RIS -- Reset to initial state */
+		treset();
+		resettitle();
+		xloadcols();
+		break;
+	case '=': /* DECPAM -- Application keypad */
+		xsetmode(1, MODE_APPKEYPAD);
+		break;
+	case '>': /* DECPNM -- Normal keypad */
+		xsetmode(0, MODE_APPKEYPAD);
+		break;
+	case '7': /* DECSC -- Save Cursor */
+		tcursor(CURSOR_SAVE);
+		break;
+	case '8': /* DECRC -- Restore Cursor */
+		tcursor(CURSOR_LOAD);
+		break;
+	case '\\': /* ST -- String Terminator */
+		if (term.esc & ESC_STR_END)
+			strhandle();
+		break;
+	default:
+		fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
+			(uchar) ascii, isprint(ascii)? ascii:'.');
+		break;
+	}
+	return 1;
+}
+
+void
+tputc(Rune u)
+{
+	char c[UTF_SIZ];
+	int control;
+	int width, len;
+	Glyph *gp;
+
+	control = ISCONTROL(u);
+	if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
+		c[0] = u;
+		width = len = 1;
+	} else {
+		len = utf8encode(u, c);
+		if (!control && (width = wcwidth(u)) == -1) {
+			memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
+			width = 1;
+		}
+	}
+
+	if (IS_SET(MODE_PRINT))
+		tprinter(c, len);
+
+	/*
+	 * STR sequence must be checked before anything else
+	 * because it uses all following characters until it
+	 * receives a ESC, a SUB, a ST or any other C1 control
+	 * character.
+	 */
+	if (term.esc & ESC_STR) {
+		if (u == '\a' || u == 030 || u == 032 || u == 033 ||
+		   ISCONTROLC1(u)) {
+			term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
+			if (IS_SET(MODE_SIXEL)) {
+				/* TODO: render sixel */;
+				term.mode &= ~MODE_SIXEL;
+				return;
+			}
+			term.esc |= ESC_STR_END;
+			goto check_control_code;
+		}
+
+
+		if (IS_SET(MODE_SIXEL)) {
+			/* TODO: implement sixel mode */
+			return;
+		}
+		if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
+			term.mode |= MODE_SIXEL;
+
+		if (strescseq.len+len >= sizeof(strescseq.buf)-1) {
+			/*
+			 * Here is a bug in terminals. If the user never sends
+			 * some code to stop the str or esc command, then st
+			 * will stop responding. But this is better than
+			 * silently failing with unknown characters. At least
+			 * then users will report back.
+			 *
+			 * In the case users ever get fixed, here is the code:
+			 */
+			/*
+			 * term.esc = 0;
+			 * strhandle();
+			 */
+			return;
+		}
+
+		memmove(&strescseq.buf[strescseq.len], c, len);
+		strescseq.len += len;
+		return;
+	}
+
+check_control_code:
+	/*
+	 * Actions of control codes must be performed as soon they arrive
+	 * because they can be embedded inside a control sequence, and
+	 * they must not cause conflicts with sequences.
+	 */
+	if (control) {
+		tcontrolcode(u);
+		/*
+		 * control codes are not shown ever
+		 */
+		return;
+	} else if (term.esc & ESC_START) {
+		if (term.esc & ESC_CSI) {
+			csiescseq.buf[csiescseq.len++] = u;
+			if (BETWEEN(u, 0x40, 0x7E)
+					|| csiescseq.len >= \
+					sizeof(csiescseq.buf)-1) {
+				term.esc = 0;
+				csiparse();
+				csihandle();
+			}
+			return;
+		} else if (term.esc & ESC_UTF8) {
+			tdefutf8(u);
+		} else if (term.esc & ESC_ALTCHARSET) {
+			tdeftran(u);
+		} else if (term.esc & ESC_TEST) {
+			tdectest(u);
+		} else {
+			if (!eschandle(u))
+				return;
+			/* sequence already finished */
+		}
+		term.esc = 0;
+		/*
+		 * All characters which form part of a sequence are not
+		 * printed
+		 */
+		return;
+	}
+	if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
+		selclear();
+
+	gp = &term.line[term.c.y][term.c.x];
+	if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
+		gp->mode |= ATTR_WRAP;
+		tnewline(1);
+		gp = &term.line[term.c.y][term.c.x];
+	}
+
+	if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
+		memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
+
+	if (term.c.x+width > term.col) {
+		tnewline(1);
+		gp = &term.line[term.c.y][term.c.x];
+	}
+
+	tsetchar(u, &term.c.attr, term.c.x, term.c.y);
+
+	if (width == 2) {
+		gp->mode |= ATTR_WIDE;
+		if (term.c.x+1 < term.col) {
+			gp[1].u = '\0';
+			gp[1].mode = ATTR_WDUMMY;
+		}
+	}
+	if (term.c.x+width < term.col) {
+		tmoveto(term.c.x+width, term.c.y);
+	} else {
+		term.c.state |= CURSOR_WRAPNEXT;
+	}
+}
+
+int
+twrite(const char *buf, int buflen, int show_ctrl)
+{
+	int charsize;
+	Rune u;
+	int n;
+
+	for (n = 0; n < buflen; n += charsize) {
+		if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
+			/* process a complete utf8 char */
+			charsize = utf8decode(buf + n, &u, buflen - n);
+			if (charsize == 0)
+				break;
+		} else {
+			u = buf[n] & 0xFF;
+			charsize = 1;
+		}
+		if (show_ctrl && ISCONTROL(u)) {
+			if (u & 0x80) {
+				u &= 0x7f;
+				tputc('^');
+				tputc('[');
+			} else if (u != '\n' && u != '\r' && u != '\t') {
+				u ^= 0x40;
+				tputc('^');
+			}
+		}
+		tputc(u);
+	}
+	return n;
+}
+
+void
+tresize(int col, int row)
+{
+	int i, j;
+	int minrow = MIN(row, term.row);
+	int mincol = MIN(col, term.col);
+	int *bp;
+	TCursor c;
+
+	if (col < 1 || row < 1) {
+		fprintf(stderr,
+		        "tresize: error resizing to %dx%d\n", col, row);
+		return;
+	}
+
+	/*
+	 * slide screen to keep cursor where we expect it -
+	 * tscrollup would work here, but we can optimize to
+	 * memmove because we're freeing the earlier lines
+	 */
+	for (i = 0; i <= term.c.y - row; i++) {
+		free(term.line[i]);
+		free(term.alt[i]);
+	}
+	/* ensure that both src and dst are not NULL */
+	if (i > 0) {
+		memmove(term.line, term.line + i, row * sizeof(Line));
+		memmove(term.alt, term.alt + i, row * sizeof(Line));
+	}
+	for (i += row; i < term.row; i++) {
+		free(term.line[i]);
+		free(term.alt[i]);
+	}
+
+	/* resize to new height */
+	term.line = xrealloc(term.line, row * sizeof(Line));
+	term.alt  = xrealloc(term.alt,  row * sizeof(Line));
+	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 r w to new width, zero-pad if needed */
+	for (i = 0; i < minrow; i++) {
+		term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
+		term.alt[i]  = xrealloc(term.alt[i],  col * sizeof(Glyph));
+	}
+
+	/* allocate any new rows */
+	for (/* i = minrow */; i < row; i++) {
+		term.line[i] = xmalloc(col * sizeof(Glyph));
+		term.alt[i] = xmalloc(col * sizeof(Glyph));
+	}
+	if (col > term.col) {
+		bp = term.tabs + term.col;
+
+		memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
+		while (--bp > term.tabs && !*bp)
+			/* nothing */ ;
+		for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
+			*bp = 1;
+	}
+	/* update terminal size */
+	term.col = col;
+	term.row = row;
+	/* reset scrolling region */
+	tsetscroll(0, row-1);
+	/* make use of the LIMIT in tmoveto */
+	tmoveto(term.c.x, term.c.y);
+	/* Clearing both screens (it makes dirty all lines) */
+	c = term.c;
+	for (i = 0; i < 2; i++) {
+		if (mincol < col && 0 < minrow) {
+			tclearregion(mincol, 0, col - 1, minrow - 1);
+		}
+		if (0 < col && minrow < row) {
+			tclearregion(0, minrow, col - 1, row - 1);
+		}
+		tswapscreen();
+		tcursor(CURSOR_LOAD);
+	}
+	term.c = c;
+}
+
+void
+resettitle(void)
+{
+	xsettitle(NULL);
+}
+
+void
+drawregion(int x1, int y1, int x2, int y2)
+{
+	int y;
+	for (y = y1; y < y2; y++) {
+		if (!term.dirty[y])
+			continue;
+
+		term.dirty[y] = 0;
+		xdrawline(TLINE(y), x1, y, x2);
+	}
+}
+
+void
+draw(void)
+{
+	int cx = term.c.x;
+
+	if (!xstartdraw())
+		return;
+
+	/* adjust cursor position */
+	LIMIT(term.ocx, 0, term.col-1);
+	LIMIT(term.ocy, 0, term.row-1);
+	if (term.line[term.ocy][term.ocx].mode & ATTR_WDUMMY)
+		term.ocx--;
+	if (term.line[term.c.y][cx].mode & ATTR_WDUMMY)
+		cx--;
+
+	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 = cx, term.ocy = term.c.y;
+	xfinishdraw();
+}
+
+void
+redraw(void)
+{
+	tfulldirt();
+	draw();
+}

st.h

@@ -0,0 +1,141 @@
+/* See LICENSE for license details. */
+
+#include <stdint.h>
+#include <sys/types.h>
+
+/* Arbitrary size */
+#define HISTSIZE      2000
+
+/* macros */
+#define MIN(a, b)		((a) < (b) ? (a) : (b))
+#define MAX(a, b)		((a) < (b) ? (b) : (a))
+#define LEN(a)			(sizeof(a) / sizeof(a)[0])
+#define BETWEEN(x, a, b)	((a) <= (x) && (x) <= (b))
+#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 || \
+				(a).bg != (b).bg)
+#define TIMEDIFF(t1, t2)	((t1.tv_sec-t2.tv_sec)*1000 + \
+				(t1.tv_nsec-t2.tv_nsec)/1E6)
+#define MODBIT(x, set, bit)	((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
+
+#define TRUECOLOR(r,g,b)	(1 << 24 | (r) << 16 | (g) << 8 | (b))
+#define IS_TRUECOL(x)		(1 << 24 & (x))
+#define TLINE(y)       ((y) < term.scr ? term.hist[((y) + term.histi - term.scr \
+               + HISTSIZE + 1) % HISTSIZE] : term.line[(y) - term.scr])
+
+enum glyph_attribute {
+	ATTR_NULL       = 0,
+	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_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
+};
+
+enum selection_mode {
+	SEL_IDLE = 0,
+	SEL_EMPTY = 1,
+	SEL_READY = 2
+};
+
+enum selection_type {
+	SEL_REGULAR = 1,
+	SEL_RECTANGULAR = 2
+};
+
+enum selection_snap {
+	SNAP_WORD = 1,
+	SNAP_LINE = 2
+};
+
+typedef unsigned char uchar;
+typedef unsigned int uint;
+typedef unsigned long ulong;
+typedef unsigned short ushort;
+
+typedef uint_least32_t Rune;
+
+#define Glyph Glyph_
+typedef struct {
+	Rune u;           /* character code */
+	ushort mode;      /* attribute flags */
+	uint32_t fg;      /* foreground  */
+	uint32_t bg;      /* background  */
+} Glyph;
+
+typedef Glyph *Line;
+
+typedef union {
+	int i;
+	uint ui;
+	float f;
+	const void *v;
+} Arg;
+
+typedef struct {
+	uint b;
+	uint mask;
+	void (*func)(const Arg *);
+	const Arg arg;
+} MouseKey;
+
+void die(const char *, ...);
+void redraw(void);
+void draw(void);
+
+void externalpipe(const Arg *);
+void iso14755(const Arg *);
+void printscreen(const Arg *);
+void printsel(const Arg *);
+void sendbreak(const Arg *);
+void toggleprinter(const Arg *);
+
+int tattrset(int);
+void tnew(int, int);
+void tresize(int, int);
+void tsetdirtattr(int);
+void ttyhangup(void);
+int ttynew(char *, char *, char *, char **);
+size_t ttyread(void);
+void ttyresize(int, int);
+void ttywrite(const char *, size_t, int);
+
+void resettitle(void);
+
+void selclear(void);
+void selinit(void);
+void selstart(int, int, int);
+void selextend(int, int, int, int);
+int selected(int, int);
+char *getsel(void);
+
+size_t utf8encode(Rune, char *);
+
+void *xmalloc(size_t);
+void *xrealloc(void *, size_t);
+char *xstrdup(char *);
+
+void kscrolldown(const Arg *);
+void kscrollup(const Arg *);
+
+/* config.h globals */
+extern char *utmp;
+extern char *stty_args;
+extern char *vtiden;
+extern char *worddelimiters;
+extern int allowaltscreen;
+extern char *termname;
+extern unsigned int tabspaces;
+extern unsigned int alpha;
+extern unsigned int defaultfg;
+extern unsigned int defaultbg;
+extern MouseKey mkeys[];

win.h

@@ -0,0 +1,42 @@
+/* See LICENSE for license details. */
+
+enum win_mode {
+	MODE_VISIBLE     = 1 << 0,
+	MODE_FOCUSED     = 1 << 1,
+	MODE_APPKEYPAD   = 1 << 2,
+	MODE_MOUSEBTN    = 1 << 3,
+	MODE_MOUSEMOTION = 1 << 4,
+	MODE_REVERSE     = 1 << 5,
+	MODE_KBDLOCK     = 1 << 6,
+	MODE_HIDE        = 1 << 7,
+	MODE_APPCURSOR   = 1 << 8,
+	MODE_MOUSESGR    = 1 << 9,
+	MODE_8BIT        = 1 << 10,
+	MODE_BLINK       = 1 << 11,
+	MODE_FBLINK      = 1 << 12,
+	MODE_FOCUS       = 1 << 13,
+	MODE_MOUSEX10    = 1 << 14,
+	MODE_MOUSEMANY   = 1 << 15,
+	MODE_BRCKTPASTE  = 1 << 16,
+	MODE_NUMLOCK     = 1 << 17,
+	MODE_MOUSE       = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
+	                  |MODE_MOUSEMANY,
+};
+
+/* alpha */
+#define OPAQUE 0Xff
+#define USE_ARGB (alpha != OPAQUE && opt_embed == NULL)
+
+void xbell(void);
+void xclipcopy(void);
+void xdrawcursor(int, int, Glyph, int, int, Glyph);
+void xdrawline(Line, int, int, int);
+void xfinishdraw(void);
+void xloadcols(void);
+int xsetcolorname(int, const char *);
+void xsettitle(char *);
+int xsetcursor(int);
+void xsetmode(int, unsigned int);
+void xsetpointermotion(int);
+void xsetsel(char *);
+int xstartdraw(void);

x.c

@@ -0,0 +1,2094 @@
+/* See LICENSE for license details. */
+#include <errno.h>
+#include <math.h>
+#include <limits.h>
+#include <locale.h>
+#include <signal.h>
+#include <sys/select.h>
+#include <time.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+#include <X11/cursorfont.h>
+#include <X11/keysym.h>
+#include <X11/Xft/Xft.h>
+#include <X11/XKBlib.h>
+#include <X11/Xresource.h>
+
+static char *argv0;
+#include "arg.h"
+#include "st.h"
+#include "win.h"
+
+/* types used in config.h */
+typedef struct {
+	uint mod;
+	KeySym keysym;
+	void (*func)(const Arg *);
+	const Arg arg;
+} Shortcut;
+
+typedef struct {
+	uint b;
+	uint mask;
+	char *s;
+} MouseShortcut;
+
+typedef struct {
+	KeySym k;
+	uint mask;
+	char *s;
+	/* three-valued logic variables: 0 indifferent, 1 on, -1 off */
+	signed char appkey;    /* application keypad */
+	signed char appcursor; /* application cursor */
+} Key;
+
+/* Xresources preferences */
+enum resource_type {
+	STRING = 0,
+	INTEGER = 1,
+	FLOAT = 2
+};
+
+typedef struct {
+	char *name;
+	enum resource_type type;
+	void *dst;
+} ResourcePref;
+
+/* X modifiers */
+#define XK_ANY_MOD    UINT_MAX
+#define XK_NO_MOD     0
+#define XK_SWITCH_MOD (1<<13)
+
+/* function definitions used in config.h */
+static void clipcopy(const Arg *);
+static void clippaste(const Arg *);
+static void numlock(const Arg *);
+static void selpaste(const Arg *);
+static void zoom(const Arg *);
+static void zoomabs(const Arg *);
+static void zoomreset(const Arg *);
+
+/* config.h for applying patches and the configuration. */
+#include "config.h"
+
+/* XEMBED messages */
+#define XEMBED_FOCUS_IN  4
+#define XEMBED_FOCUS_OUT 5
+
+/* macros */
+#define IS_SET(flag)		((win.mode & (flag)) != 0)
+#define TRUERED(x)		(((x) & 0xff0000) >> 8)
+#define TRUEGREEN(x)		(((x) & 0xff00))
+#define TRUEBLUE(x)		(((x) & 0xff) << 8)
+
+typedef XftDraw *Draw;
+typedef XftColor Color;
+typedef XftGlyphFontSpec GlyphFontSpec;
+
+/* Purely graphic info */
+typedef struct {
+	int tw, th; /* tty width and height */
+	int w, h; /* window width and height */
+	int ch; /* char height */
+	int cw; /* char width  */
+	int cyo; /* char y offset */
+	int mode; /* window state/mode flags */
+	int cursor; /* cursor style */
+} TermWindow;
+
+typedef struct {
+	Display *dpy;
+	Colormap cmap;
+	Window win;
+	Drawable buf;
+	GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
+	Atom xembed, wmdeletewin, netwmname, netwmpid;
+	XIM xim;
+	XIC xic;
+	Draw draw;
+	Visual *vis;
+	XSetWindowAttributes attrs;
+	int scr;
+	int isfixed; /* is fixed geometry? */
+	int depth; /* bit depth */
+	int l, t; /* left and top offset */
+	int gm; /* geometry mask */
+} XWindow;
+
+typedef struct {
+	Atom xtarget;
+	char *primary, *clipboard;
+	struct timespec tclick1;
+	struct timespec tclick2;
+} XSelection;
+
+/* Font structure */
+#define Font Font_
+typedef struct {
+	int height;
+	int width;
+	int ascent;
+	int descent;
+	int badslant;
+	int badweight;
+	short lbearing;
+	short rbearing;
+	XftFont *match;
+	FcFontSet *set;
+	FcPattern *pattern;
+} Font;
+
+/* Drawing Context */
+typedef struct {
+	Color *col;
+	size_t collen;
+	Font font, bfont, ifont, ibfont;
+	GC gc;
+} DC;
+
+static inline ushort sixd_to_16bit(int);
+static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
+static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
+static void xdrawglyph(Glyph, int, int);
+static void xclear(int, int, int, int);
+static int xgeommasktogravity(int);
+static void xinit(int, int);
+static void cresize(int, int);
+static void xresize(int, int);
+static void xhints(void);
+static int xloadcolor(int, const char *, Color *);
+static int xloadfont(Font *, FcPattern *);
+static void xloadfonts(char *, double);
+static void xunloadfont(Font *);
+static void xunloadfonts(void);
+static void xsetenv(void);
+static void xseturgency(int);
+static int evcol(XEvent *);
+static int evrow(XEvent *);
+
+static void expose(XEvent *);
+static void visibility(XEvent *);
+static void unmap(XEvent *);
+static void kpress(XEvent *);
+static void cmessage(XEvent *);
+static void resize(XEvent *);
+static void focus(XEvent *);
+static void brelease(XEvent *);
+static void bpress(XEvent *);
+static void bmotion(XEvent *);
+static void propnotify(XEvent *);
+static void selnotify(XEvent *);
+static void selclear_(XEvent *);
+static void selrequest(XEvent *);
+static void setsel(char *, Time);
+static void mousesel(XEvent *, int);
+static void mousereport(XEvent *);
+static char *kmap(KeySym, uint);
+static int match(uint, uint);
+
+static void run(void);
+static void usage(void);
+
+static void (*handler[LASTEvent])(XEvent *) = {
+	[KeyPress] = kpress,
+	[ClientMessage] = cmessage,
+	[ConfigureNotify] = resize,
+	[VisibilityNotify] = visibility,
+	[UnmapNotify] = unmap,
+	[Expose] = expose,
+	[FocusIn] = focus,
+	[FocusOut] = focus,
+	[MotionNotify] = bmotion,
+	[ButtonPress] = bpress,
+	[ButtonRelease] = brelease,
+/*
+ * Uncomment if you want the selection to disappear when you select something
+ * different in another window.
+ */
+/*	[SelectionClear] = selclear_, */
+	[SelectionNotify] = selnotify,
+/*
+ * PropertyNotify is only turned on when there is some INCR transfer happening
+ * for the selection retrieval.
+ */
+	[PropertyNotify] = propnotify,
+	[SelectionRequest] = selrequest,
+};
+
+/* Globals */
+static DC dc;
+static XWindow xw;
+static XSelection xsel;
+static TermWindow win;
+
+/* Font Ring Cache */
+enum {
+	FRC_NORMAL,
+	FRC_ITALIC,
+	FRC_BOLD,
+	FRC_ITALICBOLD
+};
+
+typedef struct {
+	XftFont *font;
+	int flags;
+	Rune unicodep;
+} Fontcache;
+
+/* Fontcache is an array now. A new font will be appended to the array. */
+static Fontcache frc[16];
+static int frclen = 0;
+static char *usedfont = NULL;
+static double usedfontsize = 0;
+static double defaultfontsize = 0;
+
+static char *opt_class = NULL;
+static char **opt_cmd  = NULL;
+static char *opt_embed = NULL;
+static char *opt_font  = NULL;
+static char *opt_io    = NULL;
+static char *opt_line  = NULL;
+static char *opt_name  = NULL;
+static char *opt_title = NULL;
+
+static int oldbutton = 3; /* button event on startup: 3 = release */
+
+void
+clipcopy(const Arg *dummy)
+{
+	Atom clipboard;
+
+	free(xsel.clipboard);
+	xsel.clipboard = NULL;
+
+	if (xsel.primary != NULL) {
+		xsel.clipboard = xstrdup(xsel.primary);
+		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+		XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
+	}
+}
+
+void
+clippaste(const Arg *dummy)
+{
+	Atom clipboard;
+
+	clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+	XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
+			xw.win, CurrentTime);
+}
+
+void
+selpaste(const Arg *dummy)
+{
+	XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
+			xw.win, CurrentTime);
+}
+
+void
+numlock(const Arg *dummy)
+{
+	win.mode ^= MODE_NUMLOCK;
+}
+
+void
+zoom(const Arg *arg)
+{
+	Arg larg;
+
+	larg.f = usedfontsize + arg->f;
+	zoomabs(&larg);
+}
+
+void
+zoomabs(const Arg *arg)
+{
+	xunloadfonts();
+	xloadfonts(usedfont, arg->f);
+	cresize(0, 0);
+	redraw();
+	xhints();
+}
+
+void
+zoomreset(const Arg *arg)
+{
+	Arg larg;
+
+	if (defaultfontsize > 0) {
+		larg.f = defaultfontsize;
+		zoomabs(&larg);
+	}
+}
+
+int
+evcol(XEvent *e)
+{
+	int x = e->xbutton.x - borderpx;
+	LIMIT(x, 0, win.tw - 1);
+	return x / win.cw;
+}
+
+int
+evrow(XEvent *e)
+{
+	int y = e->xbutton.y - borderpx;
+	LIMIT(y, 0, win.th - 1);
+	return y / win.ch;
+}
+
+void
+mousesel(XEvent *e, int done)
+{
+	int type, seltype = SEL_REGULAR;
+	uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
+
+	for (type = 1; type < LEN(selmasks); ++type) {
+		if (match(selmasks[type], state)) {
+			seltype = type;
+			break;
+		}
+	}
+	selextend(evcol(e), evrow(e), seltype, done);
+	if (done)
+		setsel(getsel(), e->xbutton.time);
+}
+
+void
+mousereport(XEvent *e)
+{
+	int len, x = evcol(e), y = evrow(e),
+	    button = e->xbutton.button, state = e->xbutton.state;
+	char buf[40];
+	static int ox, oy;
+
+	/* from urxvt */
+	if (e->xbutton.type == MotionNotify) {
+		if (x == ox && y == oy)
+			return;
+		if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
+			return;
+		/* MOUSE_MOTION: no reporting if no button is pressed */
+		if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
+			return;
+
+		button = oldbutton + 32;
+		ox = x;
+		oy = y;
+	} else {
+		if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
+			button = 3;
+		} else {
+			button -= Button1;
+			if (button >= 3)
+				button += 64 - 3;
+		}
+		if (e->xbutton.type == ButtonPress) {
+			oldbutton = button;
+			ox = x;
+			oy = y;
+		} else if (e->xbutton.type == ButtonRelease) {
+			oldbutton = 3;
+			/* MODE_MOUSEX10: no button release reporting */
+			if (IS_SET(MODE_MOUSEX10))
+				return;
+			if (button == 64 || button == 65)
+				return;
+		}
+	}
+
+	if (!IS_SET(MODE_MOUSEX10)) {
+		button += ((state & ShiftMask  ) ? 4  : 0)
+			+ ((state & Mod4Mask   ) ? 8  : 0)
+			+ ((state & ControlMask) ? 16 : 0);
+	}
+
+	if (IS_SET(MODE_MOUSESGR)) {
+		len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
+				button, x+1, y+1,
+				e->xbutton.type == ButtonRelease ? 'm' : 'M');
+	} else if (x < 223 && y < 223) {
+		len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
+				32+button, 32+x+1, 32+y+1);
+	} else {
+		return;
+	}
+
+	ttywrite(buf, len, 0);
+}
+
+void
+bpress(XEvent *e)
+{
+	struct timespec now;
+	MouseShortcut *ms;
+	MouseKey *mk;
+	int snap;
+
+	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
+		mousereport(e);
+		return;
+	}
+
+	for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
+		if (e->xbutton.button == ms->b
+				&& match(ms->mask, e->xbutton.state)) {
+			ttywrite(ms->s, strlen(ms->s), 1);
+			return;
+		}
+	}
+
+	for (mk = mkeys; mk < mkeys + LEN(mkeys); mk++) {
+		if (e->xbutton.button == mk->b
+				&& match(mk->mask, e->xbutton.state)) {
+			mk->func(&mk->arg);
+			return;
+		}
+	}
+
+	if (e->xbutton.button == Button1) {
+		/*
+		 * If the user clicks below predefined timeouts specific
+		 * snapping behaviour is exposed.
+		 */
+		clock_gettime(CLOCK_MONOTONIC, &now);
+		if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
+			snap = SNAP_LINE;
+		} else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
+			snap = SNAP_WORD;
+		} else {
+			snap = 0;
+		}
+		xsel.tclick2 = xsel.tclick1;
+		xsel.tclick1 = now;
+
+		selstart(evcol(e), evrow(e), snap);
+	}
+}
+
+void
+propnotify(XEvent *e)
+{
+	XPropertyEvent *xpev;
+	Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+
+	xpev = &e->xproperty;
+	if (xpev->state == PropertyNewValue &&
+			(xpev->atom == XA_PRIMARY ||
+			 xpev->atom == clipboard)) {
+		selnotify(e);
+	}
+}
+
+void
+selnotify(XEvent *e)
+{
+	ulong nitems, ofs, rem;
+	int format;
+	uchar *data, *last, *repl;
+	Atom type, incratom, property = None;
+
+	incratom = XInternAtom(xw.dpy, "INCR", 0);
+
+	ofs = 0;
+	if (e->type == SelectionNotify)
+		property = e->xselection.property;
+	else if (e->type == PropertyNotify)
+		property = e->xproperty.atom;
+
+	if (property == None)
+		return;
+
+	do {
+		if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
+					BUFSIZ/4, False, AnyPropertyType,
+					&type, &format, &nitems, &rem,
+					&data)) {
+			fprintf(stderr, "Clipboard allocation failed\n");
+			return;
+		}
+
+		if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
+			/*
+			 * If there is some PropertyNotify with no data, then
+			 * this is the signal of the selection owner that all
+			 * data has been transferred. We won't need to receive
+			 * PropertyNotify events anymore.
+			 */
+			MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
+			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
+					&xw.attrs);
+		}
+
+		if (type == incratom) {
+			/*
+			 * Activate the PropertyNotify events so we receive
+			 * when the selection owner does send us the next
+			 * chunk of data.
+			 */
+			MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
+			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
+					&xw.attrs);
+
+			/*
+			 * Deleting the property is the transfer start signal.
+			 */
+			XDeleteProperty(xw.dpy, xw.win, (int)property);
+			continue;
+		}
+
+		/*
+		 * As seen in getsel:
+		 * Line endings are inconsistent in the terminal and GUI world
+		 * copy and pasting. When receiving some selection data,
+		 * replace all '\n' with '\r'.
+		 * FIXME: Fix the computer world.
+		 */
+		repl = data;
+		last = data + nitems * format / 8;
+		while ((repl = memchr(repl, '\n', last - repl))) {
+			*repl++ = '\r';
+		}
+
+		if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
+			ttywrite("\033[200~", 6, 0);
+		ttywrite((char *)data, nitems * format / 8, 1);
+		if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
+			ttywrite("\033[201~", 6, 0);
+		XFree(data);
+		/* number of 32-bit chunks returned */
+		ofs += nitems * format / 32;
+	} while (rem > 0);
+
+	/*
+	 * Deleting the property again tells the selection owner to send the
+	 * next data chunk in the property.
+	 */
+	XDeleteProperty(xw.dpy, xw.win, (int)property);
+}
+
+void
+xclipcopy(void)
+{
+	clipcopy(NULL);
+}
+
+void
+selclear_(XEvent *e)
+{
+	selclear();
+}
+
+void
+selrequest(XEvent *e)
+{
+	XSelectionRequestEvent *xsre;
+	XSelectionEvent xev;
+	Atom xa_targets, string, clipboard;
+	char *seltext;
+
+	xsre = (XSelectionRequestEvent *) e;
+	xev.type = SelectionNotify;
+	xev.requestor = xsre->requestor;
+	xev.selection = xsre->selection;
+	xev.target = xsre->target;
+	xev.time = xsre->time;
+	if (xsre->property == None)
+		xsre->property = xsre->target;
+
+	/* reject */
+	xev.property = None;
+
+	xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
+	if (xsre->target == xa_targets) {
+		/* respond with the supported type */
+		string = xsel.xtarget;
+		XChangeProperty(xsre->display, xsre->requestor, xsre->property,
+				XA_ATOM, 32, PropModeReplace,
+				(uchar *) &string, 1);
+		xev.property = xsre->property;
+	} else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
+		/*
+		 * xith XA_STRING non ascii characters may be incorrect in the
+		 * requestor. It is not our problem, use utf8.
+		 */
+		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+		if (xsre->selection == XA_PRIMARY) {
+			seltext = xsel.primary;
+		} else if (xsre->selection == clipboard) {
+			seltext = xsel.clipboard;
+		} else {
+			fprintf(stderr,
+				"Unhandled clipboard selection 0x%lx\n",
+				xsre->selection);
+			return;
+		}
+		if (seltext != NULL) {
+			XChangeProperty(xsre->display, xsre->requestor,
+					xsre->property, xsre->target,
+					8, PropModeReplace,
+					(uchar *)seltext, strlen(seltext));
+			xev.property = xsre->property;
+		}
+	}
+
+	/* all done, send a notification to the listener */
+	if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
+		fprintf(stderr, "Error sending SelectionNotify event\n");
+}
+
+void
+setsel(char *str, Time t)
+{
+	if (!str)
+		return;
+
+	free(xsel.primary);
+	xsel.primary = str;
+
+	XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
+	if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
+		selclear();
+
+	xclipcopy();
+}
+
+void
+xsetsel(char *str)
+{
+	setsel(str, CurrentTime);
+}
+
+void
+brelease(XEvent *e)
+{
+	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
+		mousereport(e);
+		return;
+	}
+
+	if (e->xbutton.button == Button2)
+		selpaste(NULL);
+	else if (e->xbutton.button == Button1)
+		mousesel(e, 1);
+}
+
+void
+bmotion(XEvent *e)
+{
+	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
+		mousereport(e);
+		return;
+	}
+
+	mousesel(e, 0);
+}
+
+void
+cresize(int width, int height)
+{
+	int col, row;
+
+	if (width != 0)
+		win.w = width;
+	if (height != 0)
+		win.h = height;
+
+	col = (win.w - 2 * borderpx) / win.cw;
+	row = (win.h - 2 * borderpx) / win.ch;
+	col = MAX(1, col);
+	row = MAX(1, row);
+
+	tresize(col, row);
+	xresize(col, row);
+	ttyresize(win.tw, win.th);
+}
+
+void
+xresize(int col, int row)
+{
+	win.tw = col * win.cw;
+	win.th = row * win.ch;
+
+	XFreePixmap(xw.dpy, xw.buf);
+	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+			xw.depth);
+	XftDrawChange(xw.draw, xw.buf);
+	xclear(0, 0, win.w, win.h);
+
+	/* resize to new width */
+	xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
+}
+
+ushort
+sixd_to_16bit(int x)
+{
+	return x == 0 ? 0 : 0x3737 + 0x2828 * x;
+}
+
+int
+xloadcolor(int i, const char *name, Color *ncolor)
+{
+	XRenderColor color = { .alpha = 0xffff };
+
+	if (!name) {
+		if (BETWEEN(i, 16, 255)) { /* 256 color */
+			if (i < 6*6*6+16) { /* same colors as xterm */
+				color.red   = sixd_to_16bit( ((i-16)/36)%6 );
+				color.green = sixd_to_16bit( ((i-16)/6) %6 );
+				color.blue  = sixd_to_16bit( ((i-16)/1) %6 );
+			} else { /* greyscale */
+				color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
+				color.green = color.blue = color.red;
+			}
+			return XftColorAllocValue(xw.dpy, xw.vis,
+			                          xw.cmap, &color, ncolor);
+		} else
+			name = colorname[i];
+	}
+
+	return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
+}
+
+void
+xloadcols(void)
+{
+	int i;
+	static int loaded;
+	Color *cp;
+
+	if (loaded) {
+		for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
+			XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
+	} else {
+		dc.collen = MAX(LEN(colorname), 256);
+		dc.col = xmalloc(dc.collen * sizeof(Color));
+	}
+
+	for (i = 0; i < dc.collen; i++)
+		if (!xloadcolor(i, NULL, &dc.col[i])) {
+			if (colorname[i])
+				die("Could not allocate color '%s'\n", colorname[i]);
+			else
+				die("Could not allocate color %d\n", i);
+		}
+
+	/* set alpha value of bg color */
+	if (USE_ARGB) {
+		dc.col[defaultbg].color.alpha = (0xffff * alpha) / OPAQUE;
+		dc.col[defaultbg].pixel &= 0x00111111;
+		dc.col[defaultbg].pixel |= alpha << 24;
+	}
+	loaded = 1;
+}
+
+int
+xsetcolorname(int x, const char *name)
+{
+	Color ncolor;
+
+	if (!BETWEEN(x, 0, dc.collen))
+		return 1;
+
+
+	if (!xloadcolor(x, name, &ncolor))
+		return 1;
+
+	XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
+	dc.col[x] = ncolor;
+
+	return 0;
+}
+
+void
+xtermclear(int col1, int row1, int col2, int row2)
+{
+	XftDrawRect(xw.draw,
+			&dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
+			borderpx + col1 * win.cw,
+			borderpx + row1 * win.ch,
+			(col2-col1+1) * win.cw,
+			(row2-row1+1) * win.ch);
+}
+
+/*
+ * Absolute coordinates.
+ */
+void
+xclear(int x1, int y1, int x2, int y2)
+{
+	XftDrawRect(xw.draw,
+			&dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
+			x1, y1, x2-x1, y2-y1);
+}
+
+void
+xhints(void)
+{
+	XClassHint class = {opt_name ? opt_name : "st",
+	                    opt_class ? opt_class : "St"};
+	XWMHints wm = {.flags = InputHint, .input = 1};
+	XSizeHints *sizeh;
+
+	sizeh = XAllocSizeHints();
+
+	sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
+	sizeh->height = win.h;
+	sizeh->width = win.w;
+	sizeh->height_inc = win.ch;
+	sizeh->width_inc = win.cw;
+	sizeh->base_height = 2 * borderpx;
+	sizeh->base_width = 2 * borderpx;
+	sizeh->min_height = win.ch + 2 * borderpx;
+	sizeh->min_width = win.cw + 2 * borderpx;
+	if (xw.isfixed) {
+		sizeh->flags |= PMaxSize;
+		sizeh->min_width = sizeh->max_width = win.w;
+		sizeh->min_height = sizeh->max_height = win.h;
+	}
+	if (xw.gm & (XValue|YValue)) {
+		sizeh->flags |= USPosition | PWinGravity;
+		sizeh->x = xw.l;
+		sizeh->y = xw.t;
+		sizeh->win_gravity = xgeommasktogravity(xw.gm);
+	}
+
+	XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
+			&class);
+	XFree(sizeh);
+}
+
+int
+xgeommasktogravity(int mask)
+{
+	switch (mask & (XNegative|YNegative)) {
+	case 0:
+		return NorthWestGravity;
+	case XNegative:
+		return NorthEastGravity;
+	case YNegative:
+		return SouthWestGravity;
+	}
+
+	return SouthEastGravity;
+}
+
+int
+xloadfont(Font *f, FcPattern *pattern)
+{
+	FcPattern *configured;
+	FcPattern *match;
+	FcResult result;
+	XGlyphInfo extents;
+	int wantattr, haveattr;
+
+	/*
+	 * Manually configure instead of calling XftMatchFont
+	 * so that we can use the configured pattern for
+	 * "missing glyph" lookups.
+	 */
+	configured = FcPatternDuplicate(pattern);
+	if (!configured)
+		return 1;
+
+	FcConfigSubstitute(NULL, configured, FcMatchPattern);
+	XftDefaultSubstitute(xw.dpy, xw.scr, configured);
+
+	match = FcFontMatch(NULL, configured, &result);
+	if (!match) {
+		FcPatternDestroy(configured);
+		return 1;
+	}
+
+	if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
+		FcPatternDestroy(configured);
+		FcPatternDestroy(match);
+		return 1;
+	}
+
+	if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
+	    XftResultMatch)) {
+		/*
+		 * Check if xft was unable to find a font with the appropriate
+		 * slant but gave us one anyway. Try to mitigate.
+		 */
+		if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
+		    &haveattr) != XftResultMatch) || haveattr < wantattr) {
+			f->badslant = 1;
+			fputs("st: font slant does not match\n", stderr);
+		}
+	}
+
+	if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
+	    XftResultMatch)) {
+		if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
+		    &haveattr) != XftResultMatch) || haveattr != wantattr) {
+			f->badweight = 1;
+			fputs("st: font weight does not match\n", stderr);
+		}
+	}
+
+	XftTextExtentsUtf8(xw.dpy, f->match,
+		(const FcChar8 *) ascii_printable,
+		strlen(ascii_printable), &extents);
+
+	f->set = NULL;
+	f->pattern = configured;
+
+	f->ascent = f->match->ascent;
+	f->descent = f->match->descent;
+	f->lbearing = 0;
+	f->rbearing = f->match->max_advance_width;
+
+	f->height = f->ascent + f->descent;
+	f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
+
+	return 0;
+}
+
+void
+xloadfonts(char *fontstr, double fontsize)
+{
+	FcPattern *pattern;
+	double fontval;
+
+	if (fontstr[0] == '-') {
+		pattern = XftXlfdParse(fontstr, False, False);
+	} else {
+		pattern = FcNameParse((FcChar8 *)fontstr);
+	}
+
+	if (!pattern)
+		die("st: can't open font %s\n", fontstr);
+
+	if (fontsize > 1) {
+		FcPatternDel(pattern, FC_PIXEL_SIZE);
+		FcPatternDel(pattern, FC_SIZE);
+		FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
+		usedfontsize = fontsize;
+	} else {
+		if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
+				FcResultMatch) {
+			usedfontsize = fontval;
+		} else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
+				FcResultMatch) {
+			usedfontsize = -1;
+		} else {
+			/*
+			 * Default font size is 12, if none given. This is to
+			 * have a known usedfontsize value.
+			 */
+			FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
+			usedfontsize = 12;
+		}
+		defaultfontsize = usedfontsize;
+	}
+
+	if (xloadfont(&dc.font, pattern))
+		die("st: can't open font %s\n", fontstr);
+
+	if (usedfontsize < 0) {
+		FcPatternGetDouble(dc.font.match->pattern,
+		                   FC_PIXEL_SIZE, 0, &fontval);
+		usedfontsize = fontval;
+		if (fontsize == 0)
+			defaultfontsize = fontval;
+	}
+
+	/* Setting character width and height. */
+	win.cw = ceilf(dc.font.width * cwscale);
+	win.ch = ceilf(dc.font.height * chscale);
+	win.cyo = ceilf(dc.font.height * (chscale - 1) / 2);
+
+	FcPatternDel(pattern, FC_SLANT);
+	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
+	if (xloadfont(&dc.ifont, pattern))
+		die("st: can't open font %s\n", fontstr);
+
+	FcPatternDel(pattern, FC_WEIGHT);
+	FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
+	if (xloadfont(&dc.ibfont, pattern))
+		die("st: can't open font %s\n", fontstr);
+
+	FcPatternDel(pattern, FC_SLANT);
+	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
+	if (xloadfont(&dc.bfont, pattern))
+		die("st: can't open font %s\n", fontstr);
+
+	FcPatternDestroy(pattern);
+}
+
+void
+xunloadfont(Font *f)
+{
+	XftFontClose(xw.dpy, f->match);
+	FcPatternDestroy(f->pattern);
+	if (f->set)
+		FcFontSetDestroy(f->set);
+}
+
+void
+xunloadfonts(void)
+{
+	/* Free the loaded fonts in the font cache.  */
+	while (frclen > 0)
+		XftFontClose(xw.dpy, frc[--frclen].font);
+
+	xunloadfont(&dc.font);
+	xunloadfont(&dc.bfont);
+	xunloadfont(&dc.ifont);
+	xunloadfont(&dc.ibfont);
+}
+
+void
+xinit(int cols, int rows)
+{
+	XGCValues gcvalues;
+	Cursor cursor;
+	Window parent;
+	pid_t thispid = getpid();
+	XColor xmousefg, xmousebg;
+
+	xw.scr = XDefaultScreen(xw.dpy);
+	xw.depth = (USE_ARGB) ? 32: XDefaultDepth(xw.dpy, xw.scr);
+	if (!USE_ARGB)
+		xw.vis = XDefaultVisual(xw.dpy, xw.scr);
+	else {
+		XVisualInfo *vis;
+		XRenderPictFormat *fmt;
+		int nvi;
+		int i;
+
+		XVisualInfo tpl = {
+			.screen = xw.scr,
+			.depth = 32,
+			.class = TrueColor
+		};
+
+		vis = XGetVisualInfo(xw.dpy,
+				VisualScreenMask | VisualDepthMask | VisualClassMask,
+				&tpl, &nvi);
+		xw.vis = NULL;
+		for (i = 0; i < nvi; i++) {
+			fmt = XRenderFindVisualFormat(xw.dpy, vis[i].visual);
+			if (fmt->type == PictTypeDirect && fmt->direct.alphaMask) {
+				xw.vis = vis[i].visual;
+				break;
+			}
+		}
+
+		XFree(vis);
+
+		if (!xw.vis) {
+			fprintf(stderr, "Couldn't find ARGB visual.\n");
+			exit(1);
+		}
+	}
+
+	/* font */
+	if (!FcInit())
+		die("Could not init fontconfig.\n");
+
+	usedfont = (opt_font == NULL)? font : opt_font;
+	xloadfonts(usedfont, 0);
+
+	/* colors */
+	if (!USE_ARGB)
+		xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
+	else
+		xw.cmap = XCreateColormap(xw.dpy, XRootWindow(xw.dpy, xw.scr),
+				xw.vis, None);
+	xloadcols();
+
+	/* adjust fixed window geometry */
+	win.w = 2 * borderpx + cols * win.cw;
+	win.h = 2 * borderpx + rows * win.ch;
+	if (xw.gm & XNegative)
+		xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
+	if (xw.gm & YNegative)
+		xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
+
+	/* Events */
+	xw.attrs.background_pixel = dc.col[defaultbg].pixel;
+	xw.attrs.border_pixel = dc.col[defaultbg].pixel;
+	xw.attrs.bit_gravity = NorthWestGravity;
+	xw.attrs.event_mask = FocusChangeMask | KeyPressMask
+		| ExposureMask | VisibilityChangeMask | StructureNotifyMask
+		| ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
+	xw.attrs.colormap = xw.cmap;
+
+	if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
+		parent = XRootWindow(xw.dpy, xw.scr);
+	xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
+			win.w, win.h, 0, xw.depth, InputOutput,
+			xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
+			| CWEventMask | CWColormap, &xw.attrs);
+
+	memset(&gcvalues, 0, sizeof(gcvalues));
+	gcvalues.graphics_exposures = False;
+	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h, xw.depth);
+	dc.gc = XCreateGC(xw.dpy, (USE_ARGB) ? xw.buf: parent,
+			GCGraphicsExposures, &gcvalues);
+	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
+	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
+
+	/* font spec buffer */
+	xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
+
+	/* Xft rendering context */
+	xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
+
+	/* input methods */
+	if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
+		XSetLocaleModifiers("@im=local");
+		if ((xw.xim =  XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
+			XSetLocaleModifiers("@im=");
+			if ((xw.xim = XOpenIM(xw.dpy,
+					NULL, NULL, NULL)) == NULL) {
+				die("XOpenIM failed. Could not open input"
+					" device.\n");
+			}
+		}
+	}
+	xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
+					   | XIMStatusNothing, XNClientWindow, xw.win,
+					   XNFocusWindow, xw.win, NULL);
+	if (xw.xic == NULL)
+		die("XCreateIC failed. Could not obtain input method.\n");
+
+	/* white cursor, black outline */
+	cursor = XCreateFontCursor(xw.dpy, mouseshape);
+	XDefineCursor(xw.dpy, xw.win, cursor);
+
+	if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
+		xmousefg.red   = 0xffff;
+		xmousefg.green = 0xffff;
+		xmousefg.blue  = 0xffff;
+	}
+
+	if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
+		xmousebg.red   = 0x0000;
+		xmousebg.green = 0x0000;
+		xmousebg.blue  = 0x0000;
+	}
+
+	XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
+
+	xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
+	xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
+	xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
+	XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
+
+	xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
+	XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
+			PropModeReplace, (uchar *)&thispid, 1);
+
+	win.mode = MODE_NUMLOCK;
+	resettitle();
+	XMapWindow(xw.dpy, xw.win);
+	xhints();
+	XSync(xw.dpy, False);
+
+	clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
+	clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
+	xsel.primary = NULL;
+	xsel.clipboard = NULL;
+	xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
+	if (xsel.xtarget == None)
+		xsel.xtarget = XA_STRING;
+}
+
+int
+xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
+{
+	float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
+	ushort mode, prevmode = USHRT_MAX;
+	Font *font = &dc.font;
+	int frcflags = FRC_NORMAL;
+	float runewidth = win.cw;
+	Rune rune;
+	FT_UInt glyphidx;
+	FcResult fcres;
+	FcPattern *fcpattern, *fontpattern;
+	FcFontSet *fcsets[] = { NULL };
+	FcCharSet *fccharset;
+	int i, f, numspecs = 0;
+
+	for (i = 0, xp = winx, yp = winy + font->ascent + win.cyo; 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)
+			continue;
+
+		/* 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 + win.cyo;
+		}
+
+		/* Lookup character index with default font. */
+		glyphidx = XftCharIndex(xw.dpy, font->match, rune);
+		if (glyphidx) {
+			specs[numspecs].font = font->match;
+			specs[numspecs].glyph = glyphidx;
+			specs[numspecs].x = (short)xp;
+			specs[numspecs].y = (short)yp;
+			xp += runewidth;
+			numspecs++;
+			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. */
+			if (glyphidx && frc[f].flags == frcflags)
+				break;
+			/* We got a default font for a not found glyph. */
+			if (!glyphidx && frc[f].flags == frcflags
+					&& frc[f].unicodep == rune) {
+				break;
+			}
+		}
+
+		/* Nothing was found. Use fontconfig to find matching font. */
+		if (f >= frclen) {
+			if (!font->set)
+				font->set = FcFontSort(0, font->pattern,
+				                       1, 0, &fcres);
+			fcsets[0] = font->set;
+
+			/*
+			 * Nothing was found in the cache. Now use
+			 * some dozen of Fontconfig calls to get the
+			 * font for one single character.
+			 *
+			 * Xft and fontconfig are design failures.
+			 */
+			fcpattern = FcPatternDuplicate(font->pattern);
+			fccharset = FcCharSetCreate();
+
+			FcCharSetAddChar(fccharset, rune);
+			FcPatternAddCharSet(fcpattern, FC_CHARSET,
+					fccharset);
+			FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
+
+			FcConfigSubstitute(0, fcpattern,
+					FcMatchPattern);
+			FcDefaultSubstitute(fcpattern);
+
+			fontpattern = FcFontSetMatch(0, fcsets, 1,
+					fcpattern, &fcres);
+
+			/*
+			 * Overwrite or create the new cache entry.
+			 */
+			if (frclen >= LEN(frc)) {
+				frclen = LEN(frc) - 1;
+				XftFontClose(xw.dpy, frc[frclen].font);
+				frc[frclen].unicodep = 0;
+			}
+
+			frc[frclen].font = XftFontOpenPattern(xw.dpy,
+					fontpattern);
+			if (!frc[frclen].font)
+				die("XftFontOpenPattern failed seeking fallback font: %s\n",
+					strerror(errno));
+			frc[frclen].flags = frcflags;
+			frc[frclen].unicodep = rune;
+
+			glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
+
+			f = frclen;
+			frclen++;
+
+			FcPatternDestroy(fcpattern);
+			FcCharSetDestroy(fccharset);
+		}
+
+		specs[numspecs].font = frc[f].font;
+		specs[numspecs].glyph = glyphidx;
+		specs[numspecs].x = (short)xp;
+		specs[numspecs].y = (short)yp;
+		xp += runewidth;
+		numspecs++;
+	}
+
+	return numspecs;
+}
+
+void
+xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
+{
+	int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
+	int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
+	    width = charlen * win.cw;
+	Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
+	XRenderColor colfg, colbg;
+	XRectangle r;
+
+	/* Fallback on color display for attributes not supported by the font */
+	if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
+		if (dc.ibfont.badslant || dc.ibfont.badweight)
+			base.fg = defaultattr;
+	} else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
+	    (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
+		base.fg = defaultattr;
+	}
+
+	if (IS_TRUECOL(base.fg)) {
+		colfg.alpha = 0xffff;
+		colfg.red = TRUERED(base.fg);
+		colfg.green = TRUEGREEN(base.fg);
+		colfg.blue = TRUEBLUE(base.fg);
+		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
+		fg = &truefg;
+	} else {
+		fg = &dc.col[base.fg];
+	}
+
+	if (IS_TRUECOL(base.bg)) {
+		colbg.alpha = 0xffff;
+		colbg.green = TRUEGREEN(base.bg);
+		colbg.red = TRUERED(base.bg);
+		colbg.blue = TRUEBLUE(base.bg);
+		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
+		bg = &truebg;
+	} else {
+		bg = &dc.col[base.bg];
+	}
+
+	/* 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];
+
+	if (IS_SET(MODE_REVERSE)) {
+		if (fg == &dc.col[defaultfg]) {
+			fg = &dc.col[defaultbg];
+		} else {
+			colfg.red = ~fg->color.red;
+			colfg.green = ~fg->color.green;
+			colfg.blue = ~fg->color.blue;
+			colfg.alpha = fg->color.alpha;
+			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
+					&revfg);
+			fg = &revfg;
+		}
+
+		if (bg == &dc.col[defaultbg]) {
+			bg = &dc.col[defaultfg];
+		} else {
+			colbg.red = ~bg->color.red;
+			colbg.green = ~bg->color.green;
+			colbg.blue = ~bg->color.blue;
+			colbg.alpha = bg->color.alpha;
+			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
+					&revbg);
+			bg = &revbg;
+		}
+	}
+
+	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
+		colfg.red = fg->color.red / 2;
+		colfg.green = fg->color.green / 2;
+		colfg.blue = fg->color.blue / 2;
+		colfg.alpha = fg->color.alpha;
+		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
+		fg = &revfg;
+	}
+
+	if (base.mode & ATTR_REVERSE) {
+		temp = fg;
+		fg = bg;
+		bg = temp;
+	}
+
+	if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
+		fg = bg;
+
+	if (base.mode & ATTR_INVISIBLE)
+		fg = bg;
+
+	/* Intelligent cleaning up of the borders. */
+	if (x == 0) {
+		xclear(0, (y == 0)? 0 : winy, borderpx,
+			winy + win.ch +
+			((winy + win.ch >= borderpx + win.th)? win.h : 0));
+	}
+	if (winx + width >= borderpx + win.tw) {
+		xclear(winx + width, (y == 0)? 0 : winy, win.w,
+			((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
+	}
+	if (y == 0)
+		xclear(winx, 0, winx + width, borderpx);
+	if (winy + win.ch >= borderpx + win.th)
+		xclear(winx, winy + win.ch, winx + width, win.h);
+
+	/* Clean up the region we want to draw to. */
+	XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
+
+	/* Set the clip region because Xft is sometimes dirty. */
+	r.x = 0;
+	r.y = 0;
+	r.height = win.ch;
+	r.width = width;
+	XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
+
+	/* Render the glyphs. */
+	XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
+
+	/* Render underline and strikethrough. */
+	if (base.mode & ATTR_UNDERLINE) {
+		XftDrawRect(xw.draw, fg, winx, winy + win.cyo + dc.font.ascent + 1,
+				width, 1);
+	}
+
+	if (base.mode & ATTR_STRUCK) {
+		XftDrawRect(xw.draw, fg, winx, winy + win.cyo + 2 * dc.font.ascent / 3,
+				width, 1);
+	}
+
+	/* Reset clip to none. */
+	XftDrawSetClip(xw.draw, 0);
+}
+
+void
+xdrawglyph(Glyph g, int x, int y)
+{
+	int numspecs;
+	XftGlyphFontSpec spec;
+
+	numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
+	xdrawglyphfontspecs(&spec, g, numspecs, x, y);
+}
+
+void
+xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
+{
+	Color drawcol;
+
+	/* remove the old cursor */
+	if (selected(ox, oy))
+		og.mode ^= ATTR_REVERSE;
+	xdrawglyph(og, ox, oy);
+
+	if (IS_SET(MODE_HIDE))
+		return;
+
+	/*
+	 * Select the right color for the right mode.
+	 */
+	g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
+
+	if (IS_SET(MODE_REVERSE)) {
+		g.mode |= ATTR_REVERSE;
+		g.bg = defaultfg;
+		if (selected(cx, cy)) {
+			drawcol = dc.col[defaultcs];
+			g.fg = defaultrcs;
+		} else {
+			drawcol = dc.col[defaultrcs];
+			g.fg = defaultcs;
+		}
+	} else {
+		if (selected(cx, cy)) {
+			g.fg = defaultfg;
+			g.bg = defaultrcs;
+		} else {
+			g.fg = defaultbg;
+			g.bg = defaultcs;
+		}
+		drawcol = dc.col[g.bg];
+	}
+
+	/* draw the new one */
+	if (IS_SET(MODE_FOCUSED)) {
+		switch (win.cursor) {
+		case 7: /* st extension: snowman (U+2603) */
+			g.u = 0x2603;
+		case 0: /* Blinking Block */
+		case 1: /* Blinking Block (Default) */
+		case 2: /* Steady Block */
+			xdrawglyph(g, cx, cy);
+			break;
+		case 3: /* Blinking Underline */
+		case 4: /* Steady Underline */
+			XftDrawRect(xw.draw, &drawcol,
+					borderpx + cx * win.cw,
+					borderpx + (cy + 1) * win.ch - \
+						cursorthickness,
+					win.cw, cursorthickness);
+			break;
+		case 5: /* Blinking bar */
+		case 6: /* Steady bar */
+			XftDrawRect(xw.draw, &drawcol,
+					borderpx + cx * win.cw,
+					borderpx + cy * win.ch,
+					cursorthickness, win.ch);
+			break;
+		}
+	} else {
+		XftDrawRect(xw.draw, &drawcol,
+				borderpx + cx * win.cw,
+				borderpx + cy * win.ch,
+				win.cw - 1, 1);
+		XftDrawRect(xw.draw, &drawcol,
+				borderpx + cx * win.cw,
+				borderpx + cy * win.ch,
+				1, win.ch - 1);
+		XftDrawRect(xw.draw, &drawcol,
+				borderpx + (cx + 1) * win.cw - 1,
+				borderpx + cy * win.ch,
+				1, win.ch - 1);
+		XftDrawRect(xw.draw, &drawcol,
+				borderpx + cx * win.cw,
+				borderpx + (cy + 1) * win.ch - 1,
+				win.cw, 1);
+	}
+}
+
+void
+xsetenv(void)
+{
+	char buf[sizeof(long) * 8 + 1];
+
+	snprintf(buf, sizeof(buf), "%lu", xw.win);
+	setenv("WINDOWID", buf, 1);
+}
+
+void
+xsettitle(char *p)
+{
+	XTextProperty prop;
+	DEFAULT(p, opt_title);
+
+	Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
+			&prop);
+	XSetWMName(xw.dpy, xw.win, &prop);
+	XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
+	XFree(prop.value);
+}
+
+int
+xstartdraw(void)
+{
+	return IS_SET(MODE_VISIBLE);
+}
+
+void
+xdrawline(Line line, int x1, int y1, int x2)
+{
+	int i, x, ox, numspecs;
+	Glyph base, new;
+	XftGlyphFontSpec *specs = xw.specbuf;
+
+	numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
+	i = ox = 0;
+	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)) {
+			xdrawglyphfontspecs(specs, base, i, ox, y1);
+			specs += i;
+			numspecs -= i;
+			i = 0;
+		}
+		if (i == 0) {
+			ox = x;
+			base = new;
+		}
+		i++;
+	}
+	if (i > 0)
+		xdrawglyphfontspecs(specs, base, i, ox, y1);
+}
+
+void
+xfinishdraw(void)
+{
+	XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
+			win.h, 0, 0);
+	XSetForeground(xw.dpy, dc.gc,
+			dc.col[IS_SET(MODE_REVERSE)?
+				defaultfg : defaultbg].pixel);
+}
+
+void
+expose(XEvent *ev)
+{
+	redraw();
+}
+
+void
+visibility(XEvent *ev)
+{
+	XVisibilityEvent *e = &ev->xvisibility;
+
+	MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
+}
+
+void
+unmap(XEvent *ev)
+{
+	win.mode &= ~MODE_VISIBLE;
+}
+
+void
+xsetpointermotion(int set)
+{
+	MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
+	XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
+}
+
+void
+xsetmode(int set, unsigned int flags)
+{
+	int mode = win.mode;
+	MODBIT(win.mode, set, flags);
+	if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
+		redraw();
+}
+
+int
+xsetcursor(int cursor)
+{
+	DEFAULT(cursor, 1);
+	if (!BETWEEN(cursor, 0, 6))
+		return 1;
+	win.cursor = cursor;
+	return 0;
+}
+
+void
+xseturgency(int add)
+{
+	XWMHints *h = XGetWMHints(xw.dpy, xw.win);
+
+	MODBIT(h->flags, add, XUrgencyHint);
+	XSetWMHints(xw.dpy, xw.win, h);
+	XFree(h);
+}
+
+void
+xbell(void)
+{
+	if (!(IS_SET(MODE_FOCUSED)))
+		xseturgency(1);
+	if (bellvolume)
+		XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
+}
+
+void
+focus(XEvent *ev)
+{
+	XFocusChangeEvent *e = &ev->xfocus;
+
+	if (e->mode == NotifyGrab)
+		return;
+
+	if (ev->type == FocusIn) {
+		XSetICFocus(xw.xic);
+		win.mode |= MODE_FOCUSED;
+		xseturgency(0);
+		if (IS_SET(MODE_FOCUS))
+			ttywrite("\033[I", 3, 0);
+	} else {
+		XUnsetICFocus(xw.xic);
+		win.mode &= ~MODE_FOCUSED;
+		if (IS_SET(MODE_FOCUS))
+			ttywrite("\033[O", 3, 0);
+	}
+}
+
+int
+match(uint mask, uint state)
+{
+	return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
+}
+
+char*
+kmap(KeySym k, uint state)
+{
+	Key *kp;
+	int i;
+
+	/* Check for mapped keys out of X11 function keys. */
+	for (i = 0; i < LEN(mappedkeys); i++) {
+		if (mappedkeys[i] == k)
+			break;
+	}
+	if (i == LEN(mappedkeys)) {
+		if ((k & 0xFFFF) < 0xFD00)
+			return NULL;
+	}
+
+	for (kp = key; kp < key + LEN(key); kp++) {
+		if (kp->k != k)
+			continue;
+
+		if (!match(kp->mask, state))
+			continue;
+
+		if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
+			continue;
+		if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
+			continue;
+
+		if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
+			continue;
+
+		return kp->s;
+	}
+
+	return NULL;
+}
+
+void
+kpress(XEvent *ev)
+{
+	XKeyEvent *e = &ev->xkey;
+	KeySym ksym;
+	char buf[32], *customkey;
+	int len;
+	Rune c;
+	Status status;
+	Shortcut *bp;
+
+	if (IS_SET(MODE_KBDLOCK))
+		return;
+
+	len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
+	/* 1. shortcuts */
+	for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
+		if (ksym == bp->keysym && match(bp->mod, e->state)) {
+			bp->func(&(bp->arg));
+			return;
+		}
+	}
+
+	/* 2. custom keys from config.h */
+	if ((customkey = kmap(ksym, e->state))) {
+		ttywrite(customkey, strlen(customkey), 1);
+		return;
+	}
+
+	/* 3. composed string from input method */
+	if (len == 0)
+		return;
+	if (len == 1 && e->state & Mod1Mask) {
+		if (IS_SET(MODE_8BIT)) {
+			if (*buf < 0177) {
+				c = *buf | 0x80;
+				len = utf8encode(c, buf);
+			}
+		} else {
+			buf[1] = buf[0];
+			buf[0] = '\033';
+			len = 2;
+		}
+	}
+	ttywrite(buf, len, 1);
+}
+
+
+void
+cmessage(XEvent *e)
+{
+	/*
+	 * See xembed specs
+	 *  http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
+	 */
+	if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
+		if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
+			win.mode |= MODE_FOCUSED;
+			xseturgency(0);
+		} else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
+			win.mode &= ~MODE_FOCUSED;
+		}
+	} else if (e->xclient.data.l[0] == xw.wmdeletewin) {
+		ttyhangup();
+		exit(0);
+	}
+}
+
+void
+resize(XEvent *e)
+{
+	if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
+		return;
+
+	cresize(e->xconfigure.width, e->xconfigure.height);
+}
+
+void
+run(void)
+{
+	XEvent ev;
+	int w = win.w, h = win.h;
+	fd_set rfd;
+	int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
+	int ttyfd;
+	struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
+	long deltatime;
+
+	/* Waiting for window mapping */
+	do {
+		XNextEvent(xw.dpy, &ev);
+		/*
+		 * This XFilterEvent call is required because of XOpenIM. It
+		 * does filter out the key event and some client message for
+		 * the input method too.
+		 */
+		if (XFilterEvent(&ev, None))
+			continue;
+		if (ev.type == ConfigureNotify) {
+			w = ev.xconfigure.width;
+			h = ev.xconfigure.height;
+		}
+	} while (ev.type != MapNotify);
+
+	ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
+	cresize(w, h);
+
+	clock_gettime(CLOCK_MONOTONIC, &last);
+	lastblink = last;
+
+	for (xev = actionfps;;) {
+		FD_ZERO(&rfd);
+		FD_SET(ttyfd, &rfd);
+		FD_SET(xfd, &rfd);
+
+		if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
+			if (errno == EINTR)
+				continue;
+			die("select failed: %s\n", strerror(errno));
+		}
+		if (FD_ISSET(ttyfd, &rfd)) {
+			ttyread();
+			if (blinktimeout) {
+				blinkset = tattrset(ATTR_BLINK);
+				if (!blinkset)
+					MODBIT(win.mode, 0, MODE_BLINK);
+			}
+		}
+
+		if (FD_ISSET(xfd, &rfd))
+			xev = actionfps;
+
+		clock_gettime(CLOCK_MONOTONIC, &now);
+		drawtimeout.tv_sec = 0;
+		drawtimeout.tv_nsec =  (1000 * 1E6)/ xfps;
+		tv = &drawtimeout;
+
+		dodraw = 0;
+		if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
+			tsetdirtattr(ATTR_BLINK);
+			win.mode ^= MODE_BLINK;
+			lastblink = now;
+			dodraw = 1;
+		}
+		deltatime = TIMEDIFF(now, last);
+		if (deltatime > 1000 / (xev ? xfps : actionfps)) {
+			dodraw = 1;
+			last = now;
+		}
+
+		if (dodraw) {
+			while (XPending(xw.dpy)) {
+				XNextEvent(xw.dpy, &ev);
+				if (XFilterEvent(&ev, None))
+					continue;
+				if (handler[ev.type])
+					(handler[ev.type])(&ev);
+			}
+
+			draw();
+			XFlush(xw.dpy);
+
+			if (xev && !FD_ISSET(xfd, &rfd))
+				xev--;
+			if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
+				if (blinkset) {
+					if (TIMEDIFF(now, lastblink) \
+							> blinktimeout) {
+						drawtimeout.tv_nsec = 1000;
+					} else {
+						drawtimeout.tv_nsec = (1E6 * \
+							(blinktimeout - \
+							TIMEDIFF(now,
+								lastblink)));
+					}
+					drawtimeout.tv_sec = \
+					    drawtimeout.tv_nsec / 1E9;
+					drawtimeout.tv_nsec %= (long)1E9;
+				} else {
+					tv = NULL;
+				}
+			}
+		}
+	}
+}
+
+int
+resource_load(XrmDatabase db, char *name, enum resource_type rtype, void *dst)
+{
+	char **sdst = dst;
+	int *idst = dst;
+	float *fdst = dst;
+
+	char fullname[256];
+	char fullclass[256];
+	char *type;
+	XrmValue ret;
+
+	snprintf(fullname, sizeof(fullname), "%s.%s",
+			opt_name ? opt_name : "st", name);
+	snprintf(fullclass, sizeof(fullclass), "%s.%s",
+			opt_class ? opt_class : "St", name);
+	fullname[sizeof(fullname) - 1] = fullclass[sizeof(fullclass) - 1] = '\0';
+
+	XrmGetResource(db, fullname, fullclass, &type, &ret);
+	if (ret.addr == NULL || strncmp("String", type, 64))
+		return 1;
+
+	switch (rtype) {
+	case STRING:
+		*sdst = ret.addr;
+		break;
+	case INTEGER:
+		*idst = strtoul(ret.addr, NULL, 10);
+		break;
+	case FLOAT:
+		*fdst = strtof(ret.addr, NULL);
+		break;
+	}
+	return 0;
+}
+
+void
+config_init(void)
+{
+	char *resm;
+	XrmDatabase db;
+	ResourcePref *p;
+
+	XrmInitialize();
+	resm = XResourceManagerString(xw.dpy);
+	if (!resm)
+		return;
+
+	db = XrmGetStringDatabase(resm);
+	for (p = resources; p < resources + LEN(resources); p++)
+		resource_load(db, p->name, p->type, p->dst);
+}
+
+void
+usage(void)
+{
+	die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
+	    " [-n name] [-o file]\n"
+	    "          [-T title] [-t title] [-w windowid]"
+	    " [[-e] command [args ...]]\n"
+	    "       %s [-aiv] [-c class] [-f font] [-g geometry]"
+	    " [-n name] [-o file]\n"
+	    "          [-T title] [-t title] [-w windowid] -l line"
+	    " [stty_args ...]\n", argv0, argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	xw.l = xw.t = 0;
+	xw.isfixed = False;
+	win.cursor = cursorshape;
+
+	ARGBEGIN {
+	case 'a':
+		allowaltscreen = 0;
+		break;
+	case 'c':
+		opt_class = EARGF(usage());
+		break;
+	case 'e':
+		if (argc > 0)
+			--argc, ++argv;
+		goto run;
+	case 'f':
+		opt_font = EARGF(usage());
+		break;
+	case 'g':
+		xw.gm = XParseGeometry(EARGF(usage()),
+				&xw.l, &xw.t, &cols, &rows);
+		break;
+	case 'i':
+		xw.isfixed = 1;
+		break;
+	case 'o':
+		opt_io = EARGF(usage());
+		break;
+	case 'l':
+		opt_line = EARGF(usage());
+		break;
+	case 'n':
+		opt_name = EARGF(usage());
+		break;
+	case 't':
+	case 'T':
+		opt_title = EARGF(usage());
+		break;
+	case 'w':
+		opt_embed = EARGF(usage());
+		break;
+	case 'v':
+		die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+run:
+	if (argc > 0) /* eat all remaining arguments */
+		opt_cmd = argv;
+
+	if (!opt_title)
+		opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
+
+	setlocale(LC_CTYPE, "");
+	XSetLocaleModifiers("");
+
+	if(!(xw.dpy = XOpenDisplay(NULL)))
+		die("Can't open display\n");
+
+	config_init();
+	cols = MAX(cols, 1);
+	rows = MAX(rows, 1);
+	tnew(cols, rows);
+	xinit(cols, rows);
+	xsetenv();
+	selinit();
+	run();
+
+	return 0;
+}