Applied clickurl patch

The kitty keyboard protocol docs recommend CSI ? u to query support for
that protocol, see https://sw.kovidgoyal.net/kitty/keyboard-protocol/

For better or worse, fish shell uses this query to work around bugs
in other terminals triggered by requesting that protocol via CSI = 5 u.

Unfortunately, st interprets CSI ? u as DECRC (restore cursor
position). reproduce with 'printf "\x1b[?u"; cat'.

fish could work around this by switching to the alternate screen
before running this query; but that might cause tearing on terminals
that don't support Synchronized Output. I'm not sure.

In the meantime, let's correct our parser.

This adds a redundant else-after-return, for consistency with the
surrounding code.

FAQ

@@ -1,6 +1,7 @@
 ## Why does st not handle utmp entries?
 
-Use the excellent tool of [utmp](http://git.suckless.org/utmp/) for this task.
+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!
 
@@ -8,6 +9,7 @@ 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
@@ -15,19 +17,21 @@ you can manually run `tic -sx st.info`.
 * Some programs don’t complain about the lacking st description and default to
   another terminal. In that case see the question about terminfo.
 
-## I get some weird glitches/visual bug on _random program_!
-
-Try launching it with a different TERM: $ TERM=xterm myapp. toe(1) will give
-you a list of available terminals, but you’ll most likely switch between xterm,
-st or st-256color. The default value for TERM can be changed in config.h
-(TNAME).
 
 ## How do I scroll back up?
 
-Using a terminal multiplexer.
+* 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 path of both programs in your config.h file. You only
+have to modify the value of utmp and scroll variables.
 
-* `st -e tmux` using C-b [
-* `st -e screen` using C-a ESC
 
 ## Why doesn't the Del key work in some programs?
 
@@ -84,12 +88,14 @@ If you are using zsh, then read the zsh FAQ
 
 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
@@ -98,13 +104,14 @@ If you want to compile st for OpenBSD you have to remove -lrt from config.mk, an
 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
-<http://lists.suckless.org/dev/1404/20697.html>. Here is why some old grumpy
+<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
@@ -159,9 +166,88 @@ terminal users wants its backspace to be how he feels it:
 	[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] http://st.suckless.org/patches/delkey
+[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.
+
+As of 2022-09-05 this now seems to be finally fixed in libXft 2.3.5:
+https://gitlab.freedesktop.org/xorg/lib/libxft/-/blob/libXft-2.3.5/NEWS

LICENSE

@@ -1,6 +1,6 @@
 MIT/X Consortium License
 
-© 2014-2018 Hiltjo Posthuma <hiltjo at codemadness dot org>
+© 2014-2022 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>

Makefile

@@ -7,13 +7,7 @@ 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)"
+all: st
 
 config.h:
 	cp config.def.h config.h
@@ -22,7 +16,7 @@ config.h:
 	$(CC) $(STCFLAGS) -c $<
 
 st.o: config.h st.h win.h
-x.o: arg.h st.h win.h
+x.o: arg.h config.h st.h win.h
 
 $(OBJ): config.h config.mk
 
@@ -54,4 +48,4 @@ uninstall:
 	rm -f $(DESTDIR)$(PREFIX)/bin/st
 	rm -f $(DESTDIR)$(MANPREFIX)/man1/st.1
 
-.PHONY: all options clean dist install uninstall
+.PHONY: all clean dist install uninstall

arg.h

@@ -21,28 +21,30 @@ extern char *argv0;
 					argc--;\
 					break;\
 				}\
-				for (brk_ = 0, argv[0]++, argv_ = argv;\
-						argv[0][0] && !brk_;\
-						argv[0]++) {\
+				int i_;\
+				for (i_ = 1, brk_ = 0, argv_ = argv;\
+						argv[0][i_] && !brk_;\
+						i_++) {\
 					if (argv_ != argv)\
 						break;\
-					argc_ = argv[0][0];\
+					argc_ = argv[0][i_];\
 					switch (argc_)
+
 #define ARGEND			}\
 			}
 
 #define ARGC()		argc_
 
-#define EARGF(x)	((argv[0][1] == '\0' && argv[1] == NULL)?\
+#define EARGF(x)	((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
 				((x), abort(), (char *)0) :\
-				(brk_ = 1, (argv[0][1] != '\0')?\
-					(&argv[0][1]) :\
+				(brk_ = 1, (argv[0][i_+1] != '\0')?\
+					(&argv[0][i_+1]) :\
 					(argc--, argv++, argv[0])))
 
-#define ARGF()		((argv[0][1] == '\0' && argv[1] == NULL)?\
+#define ARGF()		((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
 				(char *)0 :\
-				(brk_ = 1, (argv[0][1] != '\0')?\
-					(&argv[0][1]) :\
+				(brk_ = 1, (argv[0][i_+1] != '\0')?\
+					(&argv[0][i_+1]) :\
 					(argc--, argv++, argv[0])))
 
 #endif

config.def.h

@@ -11,13 +11,15 @@ static int borderpx = 2;
 /*
  * What program is execed by st depends of these precedence rules:
  * 1: program passed with -e
- * 2: utmp option
+ * 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 */
@@ -30,9 +32,9 @@ static float chscale = 1.0;
 /*
  * word delimiter string
  *
- * More advanced example: " `'\"()[]{}"
+ * More advanced example: L" `'\"()[]{}"
  */
-char *worddelimiters = " ";
+wchar_t *worddelimiters = L" ";
 
 /* selection timeouts (in milliseconds) */
 static unsigned int doubleclicktimeout = 300;
@@ -41,9 +43,18 @@ static unsigned int tripleclicktimeout = 600;
 /* alt screens */
 int allowaltscreen = 1;
 
-/* frames per second st should at maximum draw to the screen */
-static unsigned int xfps = 120;
-static unsigned int actionfps = 30;
+/* 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 = 2;
+static double maxlatency = 33;
 
 /*
  * blinking timeout (set to 0 to disable blinking) for the terminal blinking
@@ -109,6 +120,8 @@ static const char *colorname[] = {
 	/* more colors can be added after 255 to use with DefaultXX */
 	"#cccccc",
 	"#555555",
+	"gray90", /* default foreground colour */
+	"black", /* default background colour */
 };
 
 
@@ -116,9 +129,9 @@ static const char *colorname[] = {
  * Default colors (colorname index)
  * foreground, background, cursor, reverse cursor
  */
-unsigned int defaultfg = 7;
-unsigned int defaultbg = 0;
-static unsigned int defaultcs = 256;
+unsigned int defaultfg = 258;
+unsigned int defaultbg = 259;
+unsigned int defaultcs = 256;
 static unsigned int defaultrcs = 257;
 
 /*
@@ -150,14 +163,24 @@ static unsigned int mousebg = 0;
  */
 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[] = {
-	/* button               mask            string */
-	{ Button4,              XK_ANY_MOD,     "\031" },
-	{ Button5,              XK_ANY_MOD,     "\005" },
+	/* 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. */
@@ -176,8 +199,8 @@ static Shortcut shortcuts[] = {
 	{ 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} },
-	{ TERMMOD,              XK_I,           iso14755,       {.i =  0} },
 };
 
 /*
@@ -195,10 +218,6 @@ static Shortcut shortcuts[] = {
  * * 0: no value
  * * > 0: cursor application mode enabled
  * * < 0: cursor application mode disabled
- * crlf value
- * * 0: no value
- * * > 0: crlf mode is enabled
- * * < 0: crlf mode is disabled
  *
  * Be careful with the order of the definitions because st searches in
  * this table sequentially, so any XK_ANY_MOD must be in the last
@@ -217,13 +236,6 @@ static KeySym mappedkeys[] = { -1 };
  */
 static uint ignoremod = Mod2Mask|XK_SWITCH_MOD;
 
-/*
- * Override mouse-select while mask is active (when MODE_MOUSE is set).
- * Note that if you want to use ShiftMask with selmasks, set this to an other
- * modifier, set to 0 to not use it.
- */
-static uint forceselmod = ShiftMask;
-
 /*
  * This is the huge key array which defines all compatibility to the Linux
  * world. Please decide about changes wisely.
@@ -460,3 +472,14 @@ static char ascii_printable[] =
 	" !\"#$%&'()*+,-./0123456789:;<=>?"
 	"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
 	"`abcdefghijklmnopqrstuvwxyz{|}~";
+
+/*
+ * Open urls starting with urlprefixes, contatining urlchars
+ * by passing as ARG1 to urlhandler.
+ */
+char* urlhandler = "xdg-open";
+char urlchars[] =
+	"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	"abcdefghijklmnopqrstuvwxyz"
+	"0123456789-._~:/?#@!$&'*+,;=%";
+char* urlprefixes[] = {"http://", "https://", NULL};

config.mk

@@ -1,5 +1,5 @@
 # st version
-VERSION = 0.8
+VERSION = 0.9.2
 
 # Customize below to fit your system
 
@@ -10,19 +10,27 @@ MANPREFIX = $(PREFIX)/share/man
 X11INC = /usr/X11R6/include
 X11LIB = /usr/X11R6/lib
 
+PKG_CONFIG = pkg-config
+
 # includes and libs
 INCS = -I$(X11INC) \
-       `pkg-config --cflags fontconfig` \
-       `pkg-config --cflags freetype2`
+       `$(PKG_CONFIG) --cflags fontconfig` \
+       `$(PKG_CONFIG) --cflags freetype2`
 LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
-       `pkg-config --libs fontconfig` \
-       `pkg-config --libs freetype2`
+       `$(PKG_CONFIG) --libs fontconfig` \
+       `$(PKG_CONFIG) --libs freetype2`
 
 # flags
-CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
-STCFLAGS = $(INCS) $(CPPFLAGS) $(CFLAGS)
+STCPPFLAGS = -DVERSION=\"$(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`
+#MANPREFIX = ${PREFIX}/man
+
 # compiler and linker
 # CC = c99
-

patches/st-clickurl-0.8.5.diff

@@ -0,0 +1,192 @@
+From d5b492049f48dc411b0dd7dc01a403304c20438d Mon Sep 17 00:00:00 2001
+From: Jishnu Sen <jishnu1@gmail.com>
+Date: Sun, 7 Apr 2024 22:54:46 -0700
+Subject: [PATCH] Highlight URLs with control and follow with click
+
+---
+ config.def.h | 11 +++++++
+ st.c         | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++++
+ st.h         |  9 ++++++
+ x.c          | 24 +++++++++++++-
+ 4 files changed, 132 insertions(+), 1 deletion(-)
+
+diff --git a/config.def.h b/config.def.h
+index 91ab8ca..4961830 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -472,3 +472,14 @@ static char ascii_printable[] =
+ 	" !\"#$%&'()*+,-./0123456789:;<=>?"
+ 	"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
+ 	"`abcdefghijklmnopqrstuvwxyz{|}~";
++
++/*
++ * Open urls starting with urlprefixes, contatining urlchars
++ * by passing as ARG1 to urlhandler.
++ */
++char* urlhandler = "xdg-open";
++char urlchars[] =
++	"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
++	"abcdefghijklmnopqrstuvwxyz"
++	"0123456789-._~:/?#@!$&'*+,;=%";
++char* urlprefixes[] = {"http://", "https://", NULL};
+diff --git a/st.c b/st.c
+index 51049ba..8f2156c 100644
+--- a/st.c
++++ b/st.c
+@@ -643,6 +643,95 @@ getsel(void)
+ 	return str;
+ }
+ 
++char *
++strstrany(char* s, char** strs) {
++	char *match;
++	for (int i = 0; strs[i]; i++) {
++		if ((match = strstr(s, strs[i]))) {
++			return match;
++		}
++	}
++	return NULL;
++}
++
++void
++highlighturls(void)
++{
++	char *match;
++	char *linestr = calloc(sizeof(char), term.col+1); /* assume ascii */
++	for (int i = term.top; i < term.bot; i++) {
++		int url_start = -1;
++		for (int j = 0; j < term.col; j++) {
++			if (term.line[i][j].u < 127) {
++				linestr[j] = term.line[i][j].u;
++			}
++			linestr[term.col] = '\0';
++		}
++		while ((match = strstrany(linestr + url_start + 1, urlprefixes))) {
++			url_start = match - linestr;
++			for (int c = url_start; c < term.col && strchr(urlchars, linestr[c]); c++) {
++				term.line[i][c].mode |= ATTR_URL;
++				tsetdirt(i, c);
++			}
++		}
++	}
++	free(linestr);
++}
++
++void
++unhighlighturls(void)
++{
++	for (int i = term.top; i < term.bot; i++) {
++		for (int j = 0; j < term.col; j++) {
++			Glyph* g = &term.line[i][j];
++			if (g->mode & ATTR_URL) {
++				g->mode &= ~ATTR_URL;
++				tsetdirt(i, j);
++			}
++		}
++	}
++	return;
++}
++
++void
++followurl(int x, int y) {
++	char *linestr = calloc(sizeof(char), term.col+1); /* assume ascii */
++	char *match;
++	for (int i = 0; i < term.col; i++) {
++		if (term.line[x][i].u < 127) {
++			linestr[i] = term.line[x][i].u;
++		}
++		linestr[term.col] = '\0';
++	}
++	int url_start = -1;
++	while ((match = strstrany(linestr + url_start + 1, urlprefixes))) {
++		url_start = match - linestr;
++		int url_end = url_start;
++		for (int c = url_start; c < term.col && strchr(urlchars, linestr[c]); c++) {
++			url_end++;
++		}
++		if (url_start <= y && y < url_end) {
++			linestr[url_end] = '\0';
++			break;
++		}
++	}
++	if (url_start == -1) {
++		free(linestr);
++		return;
++	}
++
++	pid_t chpid;
++	if ((chpid = fork()) == 0) {
++		if (fork() == 0)
++			execlp(urlhandler, urlhandler, linestr + url_start, NULL);
++		exit(1);
++	}
++	if (chpid > 0)
++		waitpid(chpid, NULL, 0);
++	free(linestr);
++	unhighlighturls();
++}
++
+ void
+ selclear(void)
+ {
+diff --git a/st.h b/st.h
+index 519b9bd..354e7f9 100644
+--- a/st.h
++++ b/st.h
+@@ -34,6 +34,7 @@ enum glyph_attribute {
+ 	ATTR_WIDE       = 1 << 9,
+ 	ATTR_WDUMMY     = 1 << 10,
+ 	ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
++	ATTR_URL	= 1 << 14,
+ };
+ 
+ enum selection_mode {
+@@ -105,6 +106,10 @@ void selextend(int, int, int, int);
+ int selected(int, int);
+ char *getsel(void);
+ 
++void highlighturls(void);
++void unhighlighturls(void);
++void followurl(int, int);
++
+ size_t utf8encode(Rune, char *);
+ 
+ void *xmalloc(size_t);
+@@ -126,3 +131,7 @@ extern unsigned int tabspaces;
+ extern unsigned int defaultfg;
+ extern unsigned int defaultbg;
+ extern unsigned int defaultcs;
++extern char *urlhandler;
++extern char urlchars[];
++extern char *urlprefixes[];
++extern int nurlprefixes;
+diff --git a/x.c b/x.c
+index 8a16faa..13f68e4 100644
+--- a/x.c
++++ b/x.c
+@@ -191,6 +191,7 @@ static void usage(void);
+ 
+ static void (*handler[LASTEvent])(XEvent *) = {
+ 	[KeyPress] = kpress,
++	[KeyRelease] = kpress,
+ 	[ClientMessage] = cmessage,
+ 	[ConfigureNotify] = resize,
+ 	[VisibilityNotify] = visibility,
+@@ -445,6 +446,15 @@ mouseaction(XEvent *e, uint release)
+ 	/* ignore Button<N>mask for Button<N> - it's set on release */
+ 	uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
+ 
++	if (release == 0 &&
++	    e->xbutton.button == Button1 &&
++	    (match(ControlMask, state) ||
++	     match(ControlMask, state & ~forcemousemod))) {
++		followurl(evrow(e), evcol(e));
++		return 1;
++	}
++
++
+ 	for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
+ 		if (ms->release == release &&
+ 		    ms->button == e->xbutton.button &&
+2.44.0
+

st.1

@@ -159,10 +159,6 @@ Copy the selected text to the clipboard selection.
 .TP
 .B Ctrl-Shift-v
 Paste from the clipboard selection.
-.TP
-.B Ctrl-Shift-i
-Launch dmenu to enter a unicode codepoint and send the corresponding glyph
-to st.
 .SH CUSTOMIZATION
 .B st
 can be customized by creating a custom config.h and (re)compiling the source
@@ -174,7 +170,8 @@ See the LICENSE file for the terms of redistribution.
 .SH SEE ALSO
 .BR tabbed (1),
 .BR utmp (1),
-.BR stty (1)
+.BR stty (1),
+.BR scroll (1)
 .SH BUGS
 See the TODO file in the distribution.
 

st.h

@@ -34,6 +34,7 @@ enum glyph_attribute {
 	ATTR_WIDE       = 1 << 9,
 	ATTR_WDUMMY     = 1 << 10,
 	ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
+	ATTR_URL	= 1 << 14,
 };
 
 enum selection_mode {
@@ -74,13 +75,13 @@ typedef union {
 	uint ui;
 	float f;
 	const void *v;
+	const char *s;
 } Arg;
 
 void die(const char *, ...);
 void redraw(void);
 void draw(void);
 
-void iso14755(const Arg *);
 void printscreen(const Arg *);
 void printsel(const Arg *);
 void sendbreak(const Arg *);
@@ -91,7 +92,7 @@ void tnew(int, int);
 void tresize(int, int);
 void tsetdirtattr(int);
 void ttyhangup(void);
-int ttynew(char *, char *, char *, char **);
+int ttynew(const char *, char *, const char *, char **);
 size_t ttyread(void);
 void ttyresize(int, int);
 void ttywrite(const char *, size_t, int);
@@ -105,19 +106,30 @@ void selextend(int, int, int, int);
 int selected(int, int);
 char *getsel(void);
 
+void highlighturls(void);
+void unhighlighturls(void);
+void followurl(int, int);
+
 size_t utf8encode(Rune, char *);
 
 void *xmalloc(size_t);
 void *xrealloc(void *, size_t);
-char *xstrdup(char *);
+char *xstrdup(const char *);
 
 /* config.h globals */
 extern char *utmp;
+extern char *scroll;
 extern char *stty_args;
 extern char *vtiden;
-extern char *worddelimiters;
+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;
+extern unsigned int defaultcs;
+extern char *urlhandler;
+extern char urlchars[];
+extern char *urlprefixes[];
+extern int nurlprefixes;

st.info

@@ -1,4 +1,4 @@
-st| simpleterm,
+st-mono| simpleterm monocolor,
 	acsc=+C\,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
 	am,
 	bce,
@@ -10,7 +10,7 @@ st| simpleterm,
 	civis=\E[?25l,
 	clear=\E[H\E[2J,
 	cnorm=\E[?12l\E[?25h,
-	colors#8,
+	colors#2,
 	cols#80,
 	cr=^M,
 	csr=\E[%i%p1%d;%p2%dr,
@@ -158,6 +158,7 @@ st| simpleterm,
 	rc=\E8,
 	rev=\E[7m,
 	ri=\EM,
+	rin=\E[%p1%dT,
 	ritm=\E[23m,
 	rmacs=\E(B,
 	rmcup=\E[?1049l,
@@ -168,13 +169,8 @@ st| simpleterm,
 	rs1=\Ec,
 	rs2=\E[4l\E>\E[?1034l,
 	sc=\E7,
-	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,
-	sgr0=\E[0m,
-	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,
 	sitm=\E[3m,
+	sgr0=\E[0m,
 	smacs=\E(0,
 	smcup=\E[?1049h,
 	smir=\E[4h,
@@ -188,11 +184,26 @@ st| simpleterm,
 # XTerm extensions
 	rmxx=\E[29m,
 	smxx=\E[9m,
+	BE=\E[?2004h,
+	BD=\E[?2004l,
+	PS=\E[200~,
+	PE=\E[201~,
+# 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)
-	Se,
-	Ss,
 	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,
@@ -220,3 +231,13 @@ st-meta-256color| simpleterm with meta key and 256 colors,
 	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,

win.h

@@ -30,9 +30,12 @@ void xdrawline(Line, int, int, int);
 void xfinishdraw(void);
 void xloadcols(void);
 int xsetcolorname(int, const char *);
+int xgetcolor(int, unsigned char *, unsigned char *, unsigned char *);
+void xseticontitle(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);