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commit 1b216c95445cc8c93df08ae1d484e4fb60ece596
parent 235db018125ce9cf102ed1d5ae998027125ff43e
Author: Rob Pilling <robpilling@gmail.com>
Date:   Fri, 20 Dec 2013 20:00:57 +0000

st: add externalpipe() patch

Diffstat:
A
st.suckless.org/patches/st-0.4.1-externalpipe.diff
 | 
121
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
st.suckless.org/patches/url-select.md
 | 
38
++++++++++++++++++++++++++++++++++++++

2 files changed, 159 insertions(+), 0 deletions(-)
diff --git a/st.suckless.org/patches/st-0.4.1-externalpipe.diff b/st.suckless.org/patches/st-0.4.1-externalpipe.diff
@@ -0,0 +1,121 @@
+From 7982a2d238925028b45d5143db470e408b97469a Mon Sep 17 00:00:00 2001
+From: Rob Pilling <robpilling@gmail.com>
+Date: Fri, 20 Dec 2013 12:40:55 +0000
+Subject: [PATCH] Add externalpipe() for piping out screen text
+
+---
+ st.c |   74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------
+ 1 file changed, 68 insertions(+), 6 deletions(-)
+
+diff --git a/st.c b/st.c
+index 4fb3311..adef257 100644
+--- a/st.c
++++ b/st.c
+@@ -299,6 +299,7 @@ typedef union {
+ 	unsigned int ui;
+ 	float f;
+ 	const void *v;
++	const char *s;
+ } Arg;
+ 
+ typedef struct {
+@@ -313,6 +314,7 @@ static void clippaste(const Arg *);
+ static void numlock(const Arg *);
+ static void selpaste(const Arg *);
+ static void xzoom(const Arg *);
++static void externalpipe(const Arg *);
+ 
+ /* Config.h for applying patches and the configuration. */
+ #include "config.h"
+@@ -1204,15 +1206,22 @@ execsh(void) {
+ void
+ sigchld(int a) {
+ 	int stat = 0;
++	pid_t r;
+ 
+-	if(waitpid(pid, &stat, 0) < 0)
+-		die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
++	r = wait(&stat);
++	if(r < 0)
++		die("wait(): %s\n", SERRNO);
+ 
+-	if(WIFEXITED(stat)) {
+-		exit(WEXITSTATUS(stat));
+-	} else {
+-		exit(EXIT_FAILURE);
++	if(r == pid){
++		/* _the_ sub porcess */
++		if(WIFEXITED(stat)) {
++			exit(WEXITSTATUS(stat));
++		} else {
++			exit(EXIT_FAILURE);
++		}
+ 	}
++
++	/* something else we've forked out */
+ }
+ 
+ void
+@@ -2928,6 +2937,59 @@ xzoom(const Arg *arg) {
+ }
+ 
+ void
++externalpipe(const Arg *arg)
++{
++	int to[2]; /* 0 = read, 1 = write */
++	pid_t child;
++	int y, x;
++	void (*oldsigpipe)(int);
++
++	if(pipe(to) == -1)
++		return;
++
++	/* sigchld() handles this */
++	switch((child = fork())){
++		case -1:
++			close(to[0]), close(to[1]);
++			return;
++		case 0:
++			/* child */
++			close(to[1]);
++			dup2(to[0], STDIN_FILENO); /* 0<&to */
++			close(to[0]);
++			execvp(
++					"sh",
++					(char *const []){
++						"/bin/sh",
++						"-c",
++						(char *)arg->s,
++						0
++					});
++			exit(127);
++	}
++
++	/* parent */
++	close(to[0]);
++	/* ignore sigpipe for now, in case child exits early */
++	oldsigpipe = signal(SIGPIPE, SIG_IGN);
++
++	for(y = 0; y < term.row; y++){
++		for(x = 0; x < term.col; x++){
++			if(write(to[1], term.line[y][x].c, 1) == -1)
++				goto done;
++		}
++		if(write(to[1], "\n", 1) == -1)
++			break;
++	}
++
++done:
++	close(to[1]);
++
++	/* restore */
++	signal(SIGPIPE, oldsigpipe);
++}
++
++void
+ xinit(void) {
+ 	XGCValues gcvalues;
+ 	Cursor cursor;
+-- 
+1.7.10.4
+
diff --git a/st.suckless.org/patches/url-select.md b/st.suckless.org/patches/url-select.md
@@ -0,0 +1,38 @@
+External Pipe
+=============
+
+Description
+-----------
+
+This patch lets you write st's screen text out through a pipe, for example,
+url-select (below).
+
+Example
+-------
+
+Bind alt+u to extract all visible urls and present dmenu, to choose and open
+said urls:
+
+	static Shortcut shortcuts[] = {
+		...
+		{ MODKEY, 'u', externalpipe, { .s = "xurls | dmenu -l 10 | xargs -r open" } },
+	};
+
+
+([xurls][1] and [open][2] are external scripts)
+
+
+Download
+--------
+
+* [st-0.4.1-externalpipe.diff][0]
+
+[0]: st-0.4.1-externalpipe.diff
+[1]: https://raw.github.com/bobrippling/perlbin/master/xurls
+[2]: https://github.com/bobrippling/open
+
+
+Author
+------
+
+ * Rob Pilling - my name @ gmail