~zenomat/suckless-tools

76664c9187e5dc23a747fa51a51d23790503fc23 — zenomat 2 years ago 6f8784f
ready to move
M dwm-anybar/Makefile => dwm-anybar/Makefile +1 -1
@@ 29,7 29,7 @@ dwm-msg: dwm-msg.o
	${CC} -o $@ $< ${LDFLAGS}

clean:
	rm -f dwm dwm-msg ${OBJ} dwm-${VERSION}.tar.gz
	rm -f *.o dwm dwm-msg ${OBJ} dwm-${VERSION}.tar.gz

dist: clean
	mkdir -p dwm-${VERSION}

M dwm-anybar/config.h => dwm-anybar/config.h +3 -3
@@ 10,11 10,11 @@ static const unsigned int gappov    = 50;       /* vert outer gap between window
static const int smartgaps          = 1;        /* 1 means no outer gap when there is only one window */
static const int swallowfloating    = 0;        /* 1 means swallow floating windows by default */
static const int showbar            = 1;        /* 0 means no bar */
static const int topbar             = 0;        /* 0 means bottom bar */
static const int topbar             = 1;        /* 0 means bottom bar */
static const int usealtbar          = 1;        /* 1 means use non-dwm status bar */
static const char *altbarclass      = "Polybar"; /* Alternate bar class name */
static const char *alttrayname      = "tray";    /* Polybar tray instance name */
static const char *altbarcmd        = "/home/adrian/.config/polybar/launch_polybar.sh"; /* Alternate bar launch command */
static const char *altbarcmd        = /*"/home/adrian/.config/polybar/launch_polybar.sh";*/""; /* Alternate bar launch command */
static const char *fonts[]          = { "Terminus:size=12:antialias=true", "JoyPixels:pixelsize=11:antialias=true" };
static const char dmenufont[]       = "Terminus:size=12";



@@ 38,7 38,7 @@ static const char *colors[][3]      = {
};

static char* const autostart[][2] = { /* please replace 2 with maximum number of arguments from autostart array */
    { "/home/adrian/scripts/startup", NULL },
    { "/home/zeno/scripts/startup", NULL },
};

/* tagging */

M dwm-anybar/drw.o => dwm-anybar/drw.o +0 -0
M dwm-anybar/dwm => dwm-anybar/dwm +0 -0
M dwm-anybar/dwm-msg => dwm-anybar/dwm-msg +0 -0
M dwm-anybar/dwm-msg.o => dwm-anybar/dwm-msg.o +0 -0
M dwm-anybar/dwm.o => dwm-anybar/dwm.o +0 -0
M dwm-anybar/util.o => dwm-anybar/util.o +0 -0
M st-build/config.h => st-build/config.h +4 -3
@@ 5,8 5,8 @@
 *
 * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
 */
/*static char *font = "Iosevka Nerd Font:pixelsize=15:antialias=true:autohint=true";*/
static char *font = "Terminus:pixelsize=17:antialias=true:autohint=true";
//static char *font = "Terminus:pixelsize=18:antialias=true:autohint=true";
static char *font = "DroidSansMono Nerd Font:style=Book:pixelsize=17:antialias=true:autohint=true";
/* Spare fonts */
static char *font2[] = {
	"JoyPixels:pixelsite=15:antialias=true:autohint=true",


@@ 120,7 120,8 @@ static const char *colorname[] = {
	/* more colors can be added after 255 to use with DefaultXX */
	"#cbced0", /* 256 -> cursor */
	"#555555", /* 257 -> rev cursor*/
	"#1c1e26", /* 258 -> bg */
	//"#1c1e26", /* 258 -> bg */
	"#1a1b26",
	"#cbced0", /* 259 -> fg */
};


M st-build/st => st-build/st +0 -0
M st-build/st.o => st-build/st.o +0 -0
M st-build/x.o => st-build/x.o +0 -0
A st-plain/FAQ => st-plain/FAQ +250 -0
@@ 0,0 1,250 @@
## Why does st not handle utmp entries?

Use the excellent tool of [utmp](https://git.suckless.org/utmp/) for this task.


## Some _random program_ complains that st is unknown/not recognised/unsupported/whatever!

It means that st doesn’t have any terminfo entry on your system. Chances are
you did not `make install`. If you just want to test it without installing it,
you can manually run `tic -sx st.info`.


## Nothing works, and nothing is said about an unknown terminal!

* Some programs just assume they’re running in xterm i.e. they don’t rely on
  terminfo. What you see is the current state of the “xterm compliance”.
* Some programs don’t complain about the lacking st description and default to
  another terminal. In that case see the question about terminfo.


## How do I scroll back up?

* Using a terminal multiplexer.
	* `st -e tmux` using C-b [
	* `st -e screen` using C-a ESC
* Using the excellent tool of [scroll](https://git.suckless.org/scroll/).
* Using the scrollback [patch](https://st.suckless.org/patches/scrollback/).


## I would like to have utmp and/or scroll functionality by default

You can add the absolute patch of both programs in your config.h
file. You only have to modify the value of utmp and scroll variables.


## Why doesn't the Del key work in some programs?

Taken from the terminfo manpage:

	If the terminal has a keypad that transmits codes when the keys
	are pressed, this information can be given. Note that it is not
	possible to handle terminals where the keypad only works in
	local (this applies, for example, to the unshifted HP 2621 keys).
	If the keypad can be set to transmit or not transmit, give these
	codes as smkx and rmkx. Otherwise the keypad is assumed to
	always transmit.

In the st case smkx=E[?1hE= and rmkx=E[?1lE>, so it is mandatory that
applications which want to test against keypad keys send these
sequences.

But buggy applications (like bash and irssi, for example) don't do this. A fast
solution for them is to use the following command:

	$ printf '\033[?1h\033=' >/dev/tty

or
	$ tput smkx

In the case of bash, readline is used. Readline has a different note in its
manpage about this issue:

	enable-keypad (Off)
		When set to On, readline will try to enable the
		application keypad when it is called. Some systems
		need this to enable arrow keys.

Adding this option to your .inputrc will fix the keypad problem for all
applications using readline.

If you are using zsh, then read the zsh FAQ
<http://zsh.sourceforge.net/FAQ/zshfaq03.html#l25>:

	It should be noted that the O / [ confusion can occur with other keys
	such as Home and End. Some systems let you query the key sequences
	sent by these keys from the system's terminal database, terminfo.
	Unfortunately, the key sequences given there typically apply to the
	mode that is not the one zsh uses by default (it's the "application"
	mode rather than the "raw" mode). Explaining the use of terminfo is
	outside of the scope of this FAQ, but if you wish to use the key
	sequences given there you can tell the line editor to turn on
	"application" mode when it starts and turn it off when it stops:

		function zle-line-init () { echoti smkx }
		function zle-line-finish () { echoti rmkx }
		zle -N zle-line-init
		zle -N zle-line-finish

Putting these lines into your .zshrc will fix the problems.


## How can I use meta in 8bit mode?

St supports meta in 8bit mode, but the default terminfo entry doesn't
use this capability. If you want it, you have to use the 'st-meta' value
in TERM.


## I cannot compile st in OpenBSD

OpenBSD lacks librt, despite it being mandatory in POSIX
<http://pubs.opengroup.org/onlinepubs/9699919799/utilities/c99.html#tag_20_11_13>.
If you want to compile st for OpenBSD you have to remove -lrt from config.mk, and
st will compile without any loss of functionality, because all the functions are
included in libc on this platform.


## The Backspace Case

St is emulating the Linux way of handling backspace being delete and delete being
backspace.

This is an issue that was discussed in suckless mailing list
<https://lists.suckless.org/dev/1404/20697.html>. Here is why some old grumpy
terminal users wants its backspace to be how he feels it:

	Well, I am going to comment why I want to change the behaviour
	of this key. When ASCII was defined in 1968, communication
	with computers was done using punched cards, or hardcopy
	terminals (basically a typewriter machine connected with the
	computer using a serial port).  ASCII defines DELETE as 7F,
	because, in punched-card terms, it means all the holes of the
	card punched; it is thus a kind of 'physical delete'. In the
	same way, the BACKSPACE key was a non-destructive backspace,
	as on a typewriter.  So, if you wanted to delete a character,
	you had to BACKSPACE and then DELETE.  Another use of BACKSPACE
	was to type accented characters, for example 'a BACKSPACE `'.
	The VT100 had no BACKSPACE key; it was generated using the
	CONTROL key as another control character (CONTROL key sets to
	0 b7 b6 b5, so it converts H (code 0x48) into BACKSPACE (code
	0x08)), but it had a DELETE key in a similar position where
	the BACKSPACE key is located today on common PC keyboards.
	All the terminal emulators emulated the difference between
	these keys correctly: the backspace key generated a BACKSPACE
	(^H) and delete key generated a DELETE (^?).

	But a problem arose when Linus Torvalds wrote Linux. Unlike
	earlier terminals, the Linux virtual terminal (the terminal
	emulator integrated in the kernel) returned a DELETE when
	backspace was pressed, due to the VT100 having a DELETE key in
	the same position.  This created a lot of problems (see [1]
	and [2]). Since Linux has become the king, a lot of terminal
	emulators today generate a DELETE when the backspace key is
	pressed in order to avoid problems with Linux. The result is
	that the only way of generating a BACKSPACE on these systems
	is by using CONTROL + H. (I also think that emacs had an
	important point here because the CONTROL + H prefix is used
	in emacs in some commands (help commands).)

	From point of view of the kernel, you can change the key
	for deleting a previous character with stty erase. When you
	connect a real terminal into a machine you describe the type
	of terminal, so getty configures the correct value of stty
	erase for this terminal. In the case of terminal emulators,
	however, you don't have any getty that can set the correct
	value of stty erase, so you always get the default value.
	For this reason, it is necessary to add 'stty erase ^H' to your
	profile if you have changed the value of the backspace key.
	Of course, another solution is for st itself to modify the
	value of stty erase.  I usually have the inverse problem:
	when I connect to non-Unix machines, I have to press CONTROL +
	h to get a BACKSPACE. The inverse problem occurs when a user
	connects to my Unix machines from a different system with a
	correct backspace key.

	[1] http://www.ibb.net/~anne/keyboard.html
	[2] http://www.tldp.org/HOWTO/Keyboard-and-Console-HOWTO-5.html


## But I really want the old grumpy behaviour of my terminal

Apply [1].

[1] https://st.suckless.org/patches/delkey


## Why do images not work in st using the w3m image hack?

w3mimg uses a hack that draws an image on top of the terminal emulator Drawable
window. The hack relies on the terminal to use a single buffer to draw its
contents directly.

st uses double-buffered drawing so the image is quickly replaced and may show a
short flicker effect.

Below is a patch example to change st double-buffering to a single Drawable
buffer.

diff --git a/x.c b/x.c
--- a/x.c
+++ b/x.c
@@ -732,10 +732,6 @@ 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,
-			DefaultDepth(xw.dpy, xw.scr));
-	XftDrawChange(xw.draw, xw.buf);
 	xclear(0, 0, win.w, win.h);
 
 	/* resize to new width */
@@ -1148,8 +1144,7 @@ xinit(int cols, int rows)
 	gcvalues.graphics_exposures = False;
 	dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
 			&gcvalues);
-	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
-			DefaultDepth(xw.dpy, xw.scr));
+	xw.buf = xw.win;
 	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
 	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
 
@@ -1632,8 +1627,6 @@ xdrawline(Line line, int x1, int y1, int x2)
 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);


## BadLength X error in Xft when trying to render emoji

Xft makes st crash when rendering color emojis with the following error:

"X Error of failed request:  BadLength (poly request too large or internal Xlib length error)"
  Major opcode of failed request:  139 (RENDER)
  Minor opcode of failed request:  20 (RenderAddGlyphs)
  Serial number of failed request: 1595
  Current serial number in output stream:  1818"

This is a known bug in Xft (not st) which happens on some platforms and
combination of particular fonts and fontconfig settings.

See also:
https://gitlab.freedesktop.org/xorg/lib/libxft/issues/6
https://bugs.freedesktop.org/show_bug.cgi?id=107534
https://bugzilla.redhat.com/show_bug.cgi?id=1498269

The solution is to remove color emoji fonts or disable this in the fontconfig
XML configuration.  As an ugly workaround (which may work only on newer
fontconfig versions (FC_COLOR)), the following code can be used to mask color
fonts:

	FcPatternAddBool(fcpattern, FC_COLOR, FcFalse);

Please don't bother reporting this bug to st, but notify the upstream Xft
developers about fixing this bug.

A st-plain/LEGACY => st-plain/LEGACY +17 -0
@@ 0,0 1,17 @@
A STATEMENT ON LEGACY SUPPORT

In the terminal world there is much cruft that comes from old and unsup‐
ported terminals that inherit incompatible modes  and  escape  sequences
which noone is able to know, except when he/she comes from that time and
developed a graphical vt100 emulator at that time.

One  goal  of  st is to only support what is really needed. When you en‐
counter a sequence which you really need, implement it.  But  while  you
are  at it,  do not add the other cruft you might encounter while sneek‐
ing at other terminal emulators. History has bloated them and  there  is
no real evidence that most of the sequences are used today.


Christoph Lohmann <20h@r-36.net>
2012-09-13T07:00:36.081271045+02:00


A st-plain/LICENSE => st-plain/LICENSE +34 -0
@@ 0,0 1,34 @@
MIT/X Consortium License

© 2014-2020 Hiltjo Posthuma <hiltjo at codemadness dot org>
© 2018 Devin J. Pohly <djpohly at gmail dot com>
© 2014-2017 Quentin Rameau <quinq at fifth dot space>
© 2009-2012 Aurélien APTEL <aurelien dot aptel at gmail dot com>
© 2008-2017 Anselm R Garbe <garbeam at gmail dot com>
© 2012-2017 Roberto E. Vargas Caballero <k0ga at shike2 dot com>
© 2012-2016 Christoph Lohmann <20h at r-36 dot net>
© 2013 Eon S. Jeon <esjeon at hyunmu dot am>
© 2013 Alexander Sedov <alex0player at gmail dot com>
© 2013 Mark Edgar <medgar123 at gmail dot com>
© 2013-2014 Eric Pruitt <eric.pruitt at gmail dot com>
© 2013 Michael Forney <mforney at mforney dot org>
© 2013-2014 Markus Teich <markus dot teich at stusta dot mhn dot de>
© 2014-2015 Laslo Hunhold <dev at frign dot de>

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

A st-plain/Makefile => st-plain/Makefile +57 -0
@@ 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 config.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

A st-plain/README => st-plain/README +34 -0
@@ 0,0 1,34 @@
st - simple terminal
--------------------
st is a simple terminal emulator for X which sucks less.


Requirements
------------
In order to build st you need the Xlib header files.


Installation
------------
Edit config.mk to match your local setup (st is installed into
the /usr/local namespace by default).

Afterwards enter the following command to build and install st (if
necessary as root):

    make clean install


Running st
----------
If you did not install st with make clean install, you must compile
the st terminfo entry with the following command:

    tic -sx st.info

See the man page for additional details.

Credits
-------
Based on Aurélien APTEL <aurelien dot aptel at gmail dot com> bt source code.


A st-plain/TODO => st-plain/TODO +28 -0
@@ 0,0 1,28 @@
vt emulation
------------

* double-height support

code & interface
----------------

* add a simple way to do multiplexing

drawing
-------
* add diacritics support to xdraws()
	* switch to a suckless font drawing library
* make the font cache simpler
* add better support for brightening of the upper colors

bugs
----

* fix shift up/down (shift selection in emacs)
* remove DEC test sequence when appropriate

misc
----

    $ grep -nE 'XXX|TODO' st.c


A st-plain/arg.h => st-plain/arg.h +50 -0
@@ 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

A st-plain/config.def.h => st-plain/config.def.h +472 -0
@@ 0,0 1,472 @@
/* See LICENSE file for copyright and license details. */

/*
 * appearance
 *
 * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
 */
static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
static int borderpx = 2;

/*
 * What program is execed by st depends of these precedence rules:
 * 1: program passed with -e
 * 2: scroll and/or utmp
 * 3: SHELL environment variable
 * 4: value of shell in /etc/passwd
 * 5: value of shell in config.h
 */
static char *shell = "/bin/sh";
char *utmp = NULL;
/* scroll program: to enable use a string like "scroll" */
char *scroll = 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: L" `'\"()[]{}"
 */
wchar_t *worddelimiters = L" ";

/* selection timeouts (in milliseconds) */
static unsigned int doubleclicktimeout = 300;
static unsigned int tripleclicktimeout = 600;

/* alt screens */
int allowaltscreen = 1;

/* allow certain non-interactive (insecure) window operations such as:
   setting the clipboard text */
int allowwindowops = 0;

/*
 * draw latency range in ms - from new content/keypress/etc until drawing.
 * within this range, st draws when content stops arriving (idle). mostly it's
 * near minlatency, but it waits longer for slow updates to avoid partial draw.
 * low minlatency will tear/flicker more, as it can "detect" idle too early.
 */
static double minlatency = 8;
static double maxlatency = 33;

/*
 * 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;

/* Terminal colors (16 first used in escape sequence) */
static const char *colorname[] = {
	/* 8 normal colors */
	"black",
	"red3",
	"green3",
	"yellow3",
	"blue2",
	"magenta3",
	"cyan3",
	"gray90",

	/* 8 bright colors */
	"gray50",
	"red",
	"green",
	"yellow",
	"#5c5cff",
	"magenta",
	"cyan",
	"white",

	[255] = 0,

	/* more colors can be added after 255 to use with DefaultXX */
	"#cccccc",
	"#555555",
};


/*
 * Default colors (colorname index)
 * foreground, background, cursor, reverse cursor
 */
unsigned int defaultfg = 7;
unsigned int defaultbg = 0;
static unsigned int defaultcs = 256;
static unsigned int defaultrcs = 257;

/*
 * 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;

/*
 * Force mouse select/shortcuts 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 forcemousemod = ShiftMask;

/*
 * Internal mouse shortcuts.
 * Beware that overloading Button1 will disable the selection.
 */
static MouseShortcut mshortcuts[] = {
	/* mask                 button   function        argument       release */
	{ XK_ANY_MOD,           Button2, selpaste,       {.i = 0},      1 },
	{ ShiftMask,            Button4, ttysend,        {.s = "\033[5;2~"} },
	{ XK_ANY_MOD,           Button4, ttysend,        {.s = "\031"} },
	{ ShiftMask,            Button5, ttysend,        {.s = "\033[6;2~"} },
	{ XK_ANY_MOD,           Button5, ttysend,        {.s = "\005"} },
};

/* Internal keyboard shortcuts. */
#define MODKEY Mod1Mask
#define TERMMOD (ControlMask|ShiftMask)

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} },
	{ TERMMOD,              XK_Prior,       zoom,           {.f = +1} },
	{ TERMMOD,              XK_Next,        zoom,           {.f = -1} },
	{ TERMMOD,              XK_Home,        zoomreset,      {.f =  0} },
	{ TERMMOD,              XK_C,           clipcopy,       {.i =  0} },
	{ TERMMOD,              XK_V,           clippaste,      {.i =  0} },
	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
};

/*
 * 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
 *
 * 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;

/*
 * 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,   +1},
	{ 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{|}~";

A st-plain/config.h => st-plain/config.h +472 -0
@@ 0,0 1,472 @@
/* See LICENSE file for copyright and license details. */

/*
 * appearance
 *
 * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
 */
static char *font = "Monospace:pixelsize=15:antialias=true:autohint=true";
static int borderpx = 0;

/*
 * What program is execed by st depends of these precedence rules:
 * 1: program passed with -e
 * 2: scroll and/or utmp
 * 3: SHELL environment variable
 * 4: value of shell in /etc/passwd
 * 5: value of shell in config.h
 */
static char *shell = "/bin/sh";
char *utmp = NULL;
/* scroll program: to enable use a string like "scroll" */
char *scroll = 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: L" `'\"()[]{}"
 */
wchar_t *worddelimiters = L" ";

/* selection timeouts (in milliseconds) */
static unsigned int doubleclicktimeout = 300;
static unsigned int tripleclicktimeout = 600;

/* alt screens */
int allowaltscreen = 1;

/* allow certain non-interactive (insecure) window operations such as:
   setting the clipboard text */
int allowwindowops = 0;

/*
 * draw latency range in ms - from new content/keypress/etc until drawing.
 * within this range, st draws when content stops arriving (idle). mostly it's
 * near minlatency, but it waits longer for slow updates to avoid partial draw.
 * low minlatency will tear/flicker more, as it can "detect" idle too early.
 */
static double minlatency = 8;
static double maxlatency = 33;

/*
 * 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;

/* Terminal colors (16 first used in escape sequence) */
static const char *colorname[] = {
	/* 8 normal colors */
	"black",
	"red3",
	"green3",
	"yellow3",
	"blue2",
	"magenta3",
	"cyan3",
	"gray90",

	/* 8 bright colors */
	"gray50",
	"red",
	"green",
	"yellow",
	"#5c5cff",
	"magenta",
	"cyan",
	"white",

	[255] = 0,

	/* more colors can be added after 255 to use with DefaultXX */
	"#cccccc",
	"#555555",
};


/*
 * Default colors (colorname index)
 * foreground, background, cursor, reverse cursor
 */
unsigned int defaultfg = 7;
unsigned int defaultbg = 0;
static unsigned int defaultcs = 256;
static unsigned int defaultrcs = 257;

/*
 * 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;

/*
 * Force mouse select/shortcuts 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 forcemousemod = ShiftMask;

/*
 * Internal mouse shortcuts.
 * Beware that overloading Button1 will disable the selection.
 */
static MouseShortcut mshortcuts[] = {
	/* mask                 button   function        argument       release */
	{ XK_ANY_MOD,           Button2, selpaste,       {.i = 0},      1 },
	{ ShiftMask,            Button4, ttysend,        {.s = "\033[5;2~"} },
	{ XK_ANY_MOD,           Button4, ttysend,        {.s = "\031"} },
	{ ShiftMask,            Button5, ttysend,        {.s = "\033[6;2~"} },
	{ XK_ANY_MOD,           Button5, ttysend,        {.s = "\005"} },
};

/* Internal keyboard shortcuts. */
#define MODKEY Mod1Mask
#define TERMMOD (ControlMask|ShiftMask)

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} },
	{ TERMMOD,              XK_Prior,       zoom,           {.f = +1} },
	{ TERMMOD,              XK_Next,        zoom,           {.f = -1} },
	{ TERMMOD,              XK_Home,        zoomreset,      {.f =  0} },
	{ TERMMOD,              XK_C,           clipcopy,       {.i =  0} },
	{ TERMMOD,              XK_V,           clippaste,      {.i =  0} },
	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
};

/*
 * 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
 *
 * 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;

/*
 * 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,   +1},
	{ 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{|}~";

A st-plain/config.mk => st-plain/config.mk +35 -0
@@ 0,0 1,35 @@
# st version
VERSION = 0.8.4

# Customize below to fit your system

# paths
PREFIX = /usr/local
MANPREFIX = $(PREFIX)/share/man

X11INC = /usr/X11R6/include
X11LIB = /usr/X11R6/lib

PKG_CONFIG = pkg-config

# includes and libs
INCS = -I$(X11INC) \
       `$(PKG_CONFIG) --cflags fontconfig` \
       `$(PKG_CONFIG) --cflags freetype2`
LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
       `$(PKG_CONFIG) --libs fontconfig` \
       `$(PKG_CONFIG) --libs freetype2`

# flags
STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
STCFLAGS = $(INCS) $(STCPPFLAGS) $(CPPFLAGS) $(CFLAGS)
STLDFLAGS = $(LIBS) $(LDFLAGS)

# OpenBSD:
#CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
#LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \
#       `$(PKG_CONFIG) --libs fontconfig` \
#       `$(PKG_CONFIG) --libs freetype2`

# compiler and linker
# CC = c99

A st-plain/st => st-plain/st +0 -0
A st-plain/st.1 => st-plain/st.1 +177 -0
@@ 0,0 1,177 @@
.TH ST 1 st\-VERSION
.SH NAME
st \- simple terminal
.SH SYNOPSIS
.B st
.RB [ \-aiv ]
.RB [ \-c
.IR class ]
.RB [ \-f
.IR font ]
.RB [ \-g
.IR geometry ]
.RB [ \-n
.IR name ]
.RB [ \-o
.IR iofile ]
.RB [ \-T
.IR title ]
.RB [ \-t
.IR title ]
.RB [ \-l
.IR line ]
.RB [ \-w
.IR windowid ]
.RB [[ \-e ]
.IR command
.RI [ arguments ...]]
.PP
.B st
.RB [ \-aiv ]
.RB [ \-c
.IR class ]
.RB [ \-f
.IR font ]
.RB [ \-g
.IR geometry ]
.RB [ \-n
.IR name ]
.RB [ \-o
.IR iofile ]
.RB [ \-T
.IR title ]
.RB [ \-t
.IR title ]
.RB [ \-w
.IR windowid ]
.RB \-l
.IR line
.RI [ stty_args ...]
.SH DESCRIPTION
.B st
is a simple terminal emulator.
.SH OPTIONS
.TP
.B \-a
disable alternate screens in terminal
.TP
.BI \-c " class"
defines the window class (default $TERM).
.TP
.BI \-f " font"
defines the
.I font
to use when st is run.
.TP
.BI \-g " geometry"
defines the X11 geometry string.
The form is [=][<cols>{xX}<rows>][{+-}<xoffset>{+-}<yoffset>]. See
.BR XParseGeometry (3)
for further details.
.TP
.B \-i
will fixate the position given with the -g option.
.TP
.BI \-n " name"
defines the window instance name (default $TERM).
.TP
.BI \-o " iofile"
writes all the I/O to
.I iofile.
This feature is useful when recording st sessions. A value of "-" means
standard output.
.TP
.BI \-T " title"
defines the window title (default 'st').
.TP
.BI \-t " title"
defines the window title (default 'st').
.TP
.BI \-w " windowid"
embeds st within the window identified by
.I windowid
.TP
.BI \-l " line"
use a tty
.I line
instead of a pseudo terminal.
.I line
should be a (pseudo-)serial device (e.g. /dev/ttyS0 on Linux for serial port
0).
When this flag is given
remaining arguments are used as flags for
.BR stty(1).
By default st initializes the serial line to 8 bits, no parity, 1 stop bit
and a 38400 baud rate. The speed is set by appending it as last argument
(e.g. 'st -l /dev/ttyS0 115200'). Arguments before the last one are
.BR stty(1)
flags. If you want to set odd parity on 115200 baud use for example 'st -l
/dev/ttyS0 parenb parodd 115200'. Set the number of bits by using for
example 'st -l /dev/ttyS0 cs7 115200'. See
.BR stty(1)
for more arguments and cases.
.TP
.B \-v
prints version information to stderr, then exits.
.TP
.BI \-e " command " [ " arguments " "... ]"
st executes
.I command
instead of the shell.  If this is used it
.B must be the last option
on the command line, as in xterm / rxvt.
This option is only intended for compatibility,
and all the remaining arguments are used as a command
even without it.
.SH SHORTCUTS
.TP
.B Break
Send a break in the serial line.
Break key is obtained in PC keyboards
pressing at the same time control and pause.
.TP
.B Ctrl-Print Screen
Toggle if st should print to the
.I iofile.
.TP
.B Shift-Print Screen
Print the full screen to the
.I iofile.
.TP
.B Print Screen
Print the selection to the
.I iofile.
.TP
.B Ctrl-Shift-Page Up
Increase font size.
.TP
.B Ctrl-Shift-Page Down
Decrease font size.
.TP
.B Ctrl-Shift-Home
Reset to default font size.
.TP
.B Ctrl-Shift-y
Paste from primary selection (middle mouse button).
.TP
.B Ctrl-Shift-c
Copy the selected text to the clipboard selection.
.TP
.B Ctrl-Shift-v
Paste from the clipboard selection.
.SH CUSTOMIZATION
.B st
can be customized by creating a custom config.h and (re)compiling the source
code. This keeps it fast, secure and simple.
.SH AUTHORS
See the LICENSE file for the authors.
.SH LICENSE
See the LICENSE file for the terms of redistribution.
.SH SEE ALSO
.BR tabbed (1),
.BR utmp (1),
.BR stty (1),
.BR scroll (1)
.SH BUGS
See the TODO file in the distribution.


A st-plain/st.c => st-plain/st.c +2597 -0
@@ 0,0 1,2597 @@
/* 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 ISCONTROLC0(c)		(BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
#define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
#define ISDELIM(u)		(u && wcschr(worddelimiters, u))

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,
};

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,  /* DCS, 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,
};

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 */
	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;
	Rune lastc;   /* last printed char outside of sequence, 0 if control */
} Term;

/* CSI Escape sequence structs */
/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
typedef struct {
	char buf[ESC_BUF_SIZ]; /* raw string */
	size_t 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;             /* allocated raw string */
	size_t siz;            /* allocation size */
	size_t 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);
static void tscrolldown(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 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;

	if (!(p = malloc(len)))
		die("malloc: %s\n", strerror(errno));

	return p;
}

void *
xrealloc(void *p, size_t len)
{
	if ((p = realloc(p, len)) == NULL)
		die("realloc: %s\n", strerror(errno));

	return p;
}

char *
xstrdup(char *s)
{
	if ((s = strdup(s)) == NULL)
		die("strdup: %s\n", strerror(errno));

	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]);
}

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 ? *((*src)++) : '=';  /* emulate padding if string ends */
}

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)];

		/* invalid input. 'a' can be -1, e.g. if src is "\n" (c-str) */
		if (a == -1 || b == -1)
			break;

		*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 (term.line[y][i - 1].mode & ATTR_WRAP)
		return i;

	while (i > 0 && term.line[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.alt = IS_SET(MODE_ALTSCREEN);
	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.oe.x = col;
	sel.oe.y = row;
	selnormalize();
	sel.type = type;

	if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type || sel.mode == SEL_EMPTY)
		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 = &term.line[*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 (!(term.line[yt][xt].mode & ATTR_WRAP))
					break;
			}

			if (newx >= tlinelen(newy))
				break;

			gp = &term.line[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 (!(term.line[*y-1][term.col-1].mode
						& ATTR_WRAP)) {
					break;
				}
			}
		} else if (direction > 0) {
			for (; *y < term.row-1; *y += direction) {
				if (!(term.line[*y][term.col-1].mode
						& 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 = &term.line[y][sel.nb.x];
			lastx = sel.ne.x;
		} else {
			gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
			lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
		}
		last = &term.line[y][MIN(lastx, linelen-1)];
		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) || sel.type == SEL_RECTANGULAR))
			*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, *arg;
	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];
		arg = NULL;
	} else if (scroll) {
		prog = scroll;
		arg = utmp ? utmp : sh;
	} else if (utmp) {
		prog = utmp;
		arg = NULL;
	} else {
		prog = sh;
		arg = NULL;
	}
	DEFAULT(args, ((char *[]) {prog, arg, 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 '%s' failed: %s\n",
			    line, 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: %s\n", strerror(errno));
		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);
#ifdef __OpenBSD__
		if (pledge("stdio getpw proc exec", NULL) == -1)
			die("pledge\n");
#endif
		execsh(cmd, args);
		break;
	default:
#ifdef __OpenBSD__
		if (pledge("stdio rpath tty proc", NULL) == -1)
			die("pledge\n");
#endif
		close(s);
		cmdfd = m;
		signal(SIGCHLD, sigchld);
		break;
	}
	return cmdfd;
}

size_t
ttyread(void)
{
	static char buf[BUFSIZ];
	static int buflen = 0;
	int ret, written;

	/* append read bytes to unprocessed bytes */
	ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);

	switch (ret) {
	case 0:
		exit(0);
	case -1:
		die("couldn't read from shell: %s\n", strerror(errno));
	default:
		buflen += ret;
		written = twrite(buf, buflen, 0);
		buflen -= written;
		/* keep any incomplete UTF-8 byte sequence for the next call */
		if (buflen > 0)
			memmove(buf, buf + written, buflen);
		return ret;
	}
}

void
ttywrite(const char *s, size_t n, int may_echo)
{
	const char *next;

	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
tscrolldown(int orig, int n)
{
	int i;
	Line temp;

	LIMIT(n, 0, term.bot-orig+1);

	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 i;
	Line temp;

	LIMIT(n, 0, term.bot-orig+1);

	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.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, term.bot)) {
		selclear();
	} else if (BETWEEN(sel.nb.y, orig, term.bot)) {
		sel.ob.y += n;
		sel.oe.y += n;
		if (sel.ob.y < term.top || sel.ob.y > term.bot ||
		    sel.oe.y < term.top || sel.oe.y > term.bot) {
			selclear();
		} else {
			selnormalize();
		}
	}
}

void
tnewline(int first_col)
{
	int y = term.c.y;

	if (y == term.bot) {
		tscrollup(term.top, 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);
}

void
tdeleteline(int n)
{
	if (BETWEEN(term.c.y, term.top, term.bot))
		tscrollup(term.c.y, n);
}

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. */
				break;
			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 'b': /* REP -- if last char is printable print it <n> more times */
		DEFAULT(csiescseq.arg[0], 1);
		if (term.lastc)
			while (csiescseq.arg[0]-- > 0)
				tputc(term.lastc);
		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]);
		break;
	case 'T': /* SD -- Scroll <n> line down */
		DEFAULT(csiescseq.arg[0], 1);
		tscrolldown(term.top, csiescseq.arg[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)
{
	size_t 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, *dec;
	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 && allowwindowops) {
				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)) {
				if (par == 104 && narg <= 1)
					return; /* color reset without parameter */
				fprintf(stderr, "erresc: invalid color j=%d, p=%s\n",
				        j, p ? p : "(null)");
			} 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 */
	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)
{
	size_t 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)
{
	strescseq = (STREscape){
		.buf = xrealloc(strescseq.buf, STR_BUF_SIZ),
		.siz = STR_BUF_SIZ,
	};
}

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
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)
{
	switch (c) {
	case 0x90:   /* DCS -- Device Control String */
		c = 'P';
		break;
	case 0x9f:   /* APC -- Application Program Command */
		c = '_';
		break;
	case 0x9e:   /* PM -- Privacy Message */
		c = '^';
		break;
	case 0x9d:   /* OSC -- Operating System Command */
		c = ']';
		break;
	}
	strreset();
	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);
		/* FALLTHROUGH */
	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);
		} 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);
		} 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 (u < 127 || !IS_SET(MODE_UTF8)) {
		c[0] = u;
		width = len = 1;
	} else {
		len = utf8encode(u, c);
		if (!control && (width = wcwidth(u)) == -1)
			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);
			term.esc |= ESC_STR_END;
			goto check_control_code;
		}

		if (strescseq.len+len >= strescseq.siz) {
			/*
			 * 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();
			 */
			if (strescseq.siz > (SIZE_MAX - UTF_SIZ) / 2)
				return;
			strescseq.siz *= 2;
			strescseq.buf = xrealloc(strescseq.buf, strescseq.siz);
		}

		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
		 */
		if (!term.esc)
			term.lastc = 0;
		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 (selected(term.c.x, term.c.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);
	term.lastc = u;

	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)) {
			/* 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;
	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));

	/* resize each row to new width, zero-pad if needed */
	for (i = 0; i < minrow; i++) {
		term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
		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(term.line[y], x1, y, x2);
	}
}

void
draw(void)
{
	int cx = term.c.x, ocx = term.ocx, ocy = term.ocy;

	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);
	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();
	if (ocx != term.ocx || ocy != term.ocy)
		xximspot(term.ocx, term.ocy);
}

void
redraw(void)
{
	tfulldirt();
	draw();
}

A st-plain/st.h => st-plain/st.h +125 -0
@@ 0,0 1,125 @@
/* See LICENSE for license details. */

#include <stdint.h>
#include <sys/types.h>

/* 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))

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;
	const char *s;
} Arg;

void die(const char *, ...);
void redraw(void);
void draw(void);

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 *);

/* config.h globals */
extern char *utmp;
extern char *scroll;
extern char *stty_args;
extern char *vtiden;
extern wchar_t *worddelimiters;
extern int allowaltscreen;
extern int allowwindowops;
extern char *termname;
extern unsigned int tabspaces;
extern unsigned int defaultfg;
extern unsigned int defaultbg;

A st-plain/st.info => st-plain/st.info +239 -0
@@ 0,0 1,239 @@
st-mono| simpleterm monocolor,
	acsc=+C\,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
	am,
	bce,
	bel=^G,
	blink=\E[5m,
	bold=\E[1m,
	cbt=\E[Z,
	cvvis=\E[?25h,
	civis=\E[?25l,
	clear=\E[H\E[2J,
	cnorm=\E[?12l\E[?25h,
	colors#2,
	cols#80,
	cr=^M,
	csr=\E[%i%p1%d;%p2%dr,
	cub=\E[%p1%dD,
	cub1=^H,
	cud1=^J,
	cud=\E[%p1%dB,
	cuf1=\E[C,
	cuf=\E[%p1%dC,
	cup=\E[%i%p1%d;%p2%dH,
	cuu1=\E[A,
	cuu=\E[%p1%dA,
	dch=\E[%p1%dP,
	dch1=\E[P,
	dim=\E[2m,
	dl=\E[%p1%dM,
	dl1=\E[M,
	ech=\E[%p1%dX,
	ed=\E[J,
	el=\E[K,
	el1=\E[1K,
	enacs=\E)0,
	flash=\E[?5h$<80/>\E[?5l,
	fsl=^G,
	home=\E[H,
	hpa=\E[%i%p1%dG,
	hs,
	ht=^I,
	hts=\EH,
	ich=\E[%p1%d@,
	il1=\E[L,
	il=\E[%p1%dL,
	ind=^J,
	indn=\E[%p1%dS,
	invis=\E[8m,
	is2=\E[4l\E>\E[?1034l,
	it#8,
	kel=\E[1;2F,
	ked=\E[1;5F,
	ka1=\E[1~,
	ka3=\E[5~,
	kc1=\E[4~,
	kc3=\E[6~,
	kbs=\177,
	kcbt=\E[Z,
	kb2=\EOu,
	kcub1=\EOD,
	kcud1=\EOB,
	kcuf1=\EOC,
	kcuu1=\EOA,
	kDC=\E[3;2~,
	kent=\EOM,
	kEND=\E[1;2F,
	kIC=\E[2;2~,
	kNXT=\E[6;2~,
	kPRV=\E[5;2~,
	kHOM=\E[1;2H,
	kLFT=\E[1;2D,
	kRIT=\E[1;2C,
	kind=\E[1;2B,
	kri=\E[1;2A,
	kclr=\E[3;5~,
	kdl1=\E[3;2~,
	kdch1=\E[3~,
	kich1=\E[2~,
	kend=\E[4~,
	kf1=\EOP,
	kf2=\EOQ,
	kf3=\EOR,
	kf4=\EOS,
	kf5=\E[15~,
	kf6=\E[17~,
	kf7=\E[18~,
	kf8=\E[19~,
	kf9=\E[20~,
	kf10=\E[21~,
	kf11=\E[23~,
	kf12=\E[24~,
	kf13=\E[1;2P,
	kf14=\E[1;2Q,
	kf15=\E[1;2R,
	kf16=\E[1;2S,
	kf17=\E[15;2~,
	kf18=\E[17;2~,
	kf19=\E[18;2~,
	kf20=\E[19;2~,
	kf21=\E[20;2~,
	kf22=\E[21;2~,
	kf23=\E[23;2~,
	kf24=\E[24;2~,
	kf25=\E[1;5P,
	kf26=\E[1;5Q,
	kf27=\E[1;5R,
	kf28=\E[1;5S,
	kf29=\E[15;5~,
	kf30=\E[17;5~,
	kf31=\E[18;5~,
	kf32=\E[19;5~,
	kf33=\E[20;5~,
	kf34=\E[21;5~,
	kf35=\E[23;5~,
	kf36=\E[24;5~,
	kf37=\E[1;6P,
	kf38=\E[1;6Q,
	kf39=\E[1;6R,
	kf40=\E[1;6S,
	kf41=\E[15;6~,
	kf42=\E[17;6~,
	kf43=\E[18;6~,
	kf44=\E[19;6~,
	kf45=\E[20;6~,
	kf46=\E[21;6~,
	kf47=\E[23;6~,
	kf48=\E[24;6~,
	kf49=\E[1;3P,
	kf50=\E[1;3Q,
	kf51=\E[1;3R,
	kf52=\E[1;3S,
	kf53=\E[15;3~,
	kf54=\E[17;3~,
	kf55=\E[18;3~,
	kf56=\E[19;3~,
	kf57=\E[20;3~,
	kf58=\E[21;3~,
	kf59=\E[23;3~,
	kf60=\E[24;3~,
	kf61=\E[1;4P,
	kf62=\E[1;4Q,
	kf63=\E[1;4R,
	khome=\E[1~,
	kil1=\E[2;5~,
	krmir=\E[2;2~,
	knp=\E[6~,
	kmous=\E[M,
	kpp=\E[5~,
	lines#24,
	mir,
	msgr,
	npc,
	op=\E[39;49m,
	pairs#64,
	mc0=\E[i,
	mc4=\E[4i,
	mc5=\E[5i,
	rc=\E8,
	rev=\E[7m,
	ri=\EM,
	rin=\E[%p1%dT,
	ritm=\E[23m,
	rmacs=\E(B,
	rmcup=\E[?1049l,
	rmir=\E[4l,
	rmkx=\E[?1l\E>,
	rmso=\E[27m,
	rmul=\E[24m,
	rs1=\Ec,
	rs2=\E[4l\E>\E[?1034l,
	sc=\E7,
	sitm=\E[3m,
	sgr0=\E[0m,
	smacs=\E(0,
	smcup=\E[?1049h,
	smir=\E[4h,
	smkx=\E[?1h\E=,
	smso=\E[7m,
	smul=\E[4m,
	tbc=\E[3g,
	tsl=\E]0;,
	xenl,
	vpa=\E[%i%p1%dd,
# XTerm extensions
	rmxx=\E[29m,
	smxx=\E[9m,
# disabled rep for now: causes some issues with older ncurses versions.
#	rep=%p1%c\E[%p2%{1}%-%db,
# tmux extensions, see TERMINFO EXTENSIONS in tmux(1)
	Tc,
	Ms=\E]52;%p1%s;%p2%s\007,
	Se=\E[2 q,
	Ss=\E[%p1%d q,

st| simpleterm,
	use=st-mono,
	colors#8,
	setab=\E[4%p1%dm,
	setaf=\E[3%p1%dm,
	setb=\E[4%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
	setf=\E[3%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
	sgr=%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m,

st-256color| simpleterm with 256 colors,
	use=st,
	ccc,
	colors#256,
	oc=\E]104\007,
	pairs#32767,
#	Nicked from xterm-256color
	initc=\E]4;%p1%d;rgb\:%p2%{255}%*%{1000}%/%2.2X/%p3%{255}%*%{1000}%/%2.2X/%p4%{255}%*%{1000}%/%2.2X\E\\,
	setab=\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m,
	setaf=\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m,

st-meta| simpleterm with meta key,
	use=st,
	km,
	rmm=\E[?1034l,
	smm=\E[?1034h,
	rs2=\E[4l\E>\E[?1034h,
	is2=\E[4l\E>\E[?1034h,

st-meta-256color| simpleterm with meta key and 256 colors,
	use=st-256color,
	km,
	rmm=\E[?1034l,
	smm=\E[?1034h,
	rs2=\E[4l\E>\E[?1034h,
	is2=\E[4l\E>\E[?1034h,

st-bs| simpleterm with backspace as backspace,
	use=st,
	kbs=\010,
	kdch1=\177,

st-bs-256color| simpleterm with backspace as backspace and 256colors,
	use=st-256color,
	kbs=\010,
	kdch1=\177,

A st-plain/st.o => st-plain/st.o +0 -0
A st-plain/win.h => st-plain/win.h +39 -0
@@ 0,0 1,39 @@
/* 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,
};

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);
void xximspot(int, int);

A st-plain/x.c => st-plain/x.c +2049 -0
@@ 0,0 1,2049 @@
/* 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>

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 mod;
	uint button;
	void (*func)(const Arg *);
	const Arg arg;
	uint  release;
} 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;

/* 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 *);
static void ttysend(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 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;
	struct {
		XIM xim;
		XIC xic;
		XPoint spot;
		XVaNestedList spotlist;
	} ime;
	Draw draw;
	Visual *vis;
	XSetWindowAttributes attrs;
	int scr;
	int isfixed; /* is fixed geometry? */
	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 int ximopen(Display *);
static void ximinstantiate(Display *, XPointer, XPointer);
static void ximdestroy(XIM, XPointer, XPointer);
static int xicdestroy(XIC, XPointer, XPointer);
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 uint buttonmask(uint);
static int mouseaction(XEvent *, uint);
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 = NULL;
static int frclen = 0;
static int frccap = 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;