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	st-externalpipe-0.7.diff (2228B)
	---
	1 diff --git a/st.c b/st.c
	2 index 2594c65..ecd9bdc 100644
	3 --- a/st.c
	4 +++ b/st.c
	5 @@ -329,6 +329,7 @@ static void clipcopy(const Arg *);
	6 static void clippaste(const Arg *);
	7 static void numlock(const Arg *);
	8 static void selpaste(const Arg *);
	9 +static void externalpipe(const Arg *);
	10 static void xzoom(const Arg *);
	11 static void xzoomabs(const Arg *);
	12 static void xzoomreset(const Arg *);
	13 @@ -337,6 +338,9 @@ static void printscreen(const Arg *) ;
	14 static void toggleprinter(const Arg *);
	15 static void sendbreak(const Arg *);
	16
	17 +/* variables used in config.h */
	18 +static char winid[64];
	19 +
	20 /* Config.h for applying patches and the configuration. */
	21 #include "config.h"
	22
	23 @@ -2922,6 +2926,59 @@ eschandle(uchar ascii)
	24 }
	25
	26 void
	27 +externalpipe(const Arg *arg)
	28 +{
	29 + int to[2];
	30 + char buf[UTF_SIZ];
	31 + void (*oldsigpipe)(int);
	32 + Glyph bp, end;
	33 + int lastpos, n, newline;
	34 +
	35 + if (pipe(to) == -1)
	36 + return;
	37 +
	38 + switch (fork()) {
	39 + case -1:
	40 + close(to[0]);
	41 + close(to[1]);
	42 + return;
	43 + case 0:
	44 + dup2(to[0], STDIN_FILENO);
	45 + close(to[0]);
	46 + close(to[1]);
	47 + execvp(((char )arg->v)[0], (char )arg->v);
	48 + fprintf(stderr, "st: execvp %s ", ((char **)arg->v)[0]);
	49 + perror("failed");
	50 + exit(0);
	51 + }
	52 +
	53 + close(to[0]);
	54 + /* ignore sigpipe for now, in case child exits early */
	55 + oldsigpipe = signal(SIGPIPE, SIG_IGN);
	56 + newline = 0;
	57 + for (n = 0; n < term.row; n++) {
	58 + bp = term.line[n];
	59 + lastpos = MIN(tlinelen(n) + 1, term.col) - 1;
	60 + if (lastpos < 0)
	61 + break;
	62 + end = &bp[lastpos + 1];
	63 + for (; bp < end; ++bp)
	64 + if (xwrite(to[1], buf, utf8encode(bp->u, buf)) …
	65 + break;
	66 + if ((newline = term.line[n][lastpos].mode & ATTR_WRAP))
	67 + continue;
	68 + if (xwrite(to[1], "\n", 1) < 0)
	69 + break;
	70 + newline = 0;
	71 + }
	72 + if (newline)
	73 + (void)xwrite(to[1], "\n", 1);
	74 + close(to[1]);
	75 + /* restore */
	76 + signal(SIGPIPE, oldsigpipe);
	77 +}
	78 +
	79 +void
	80 tputc(Rune u)
	81 {
	82 char c[UTF_SIZ];
	83 @@ -3479,6 +3536,7 @@ xinit(void)
	84 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), I…
	85 xw.vis, CWBackPixel \| CWBorderPixel \| CWBitGrav…
	86 \| CWEventMask \| CWColormap, &xw.attrs);
	87 + snprintf(winid, LEN(winid), "%lu", (unsigned long)xw.win);
	88
	89 memset(&gcvalues, 0, sizeof(gcvalues));
	90 gcvalues.graphics_exposures = False;