(rewritten my previous email in proper format)
Hello. The original st-externalpipe-eternal patch
(https://st.suckless.org/patches/externalpipe/st-externalpipe-eternal-0.8.3.diff),
which allows the piping of the entire terminal buffer, does not work with the
st-scrollback-ringbuffer patch
(https://st.suckless.org/patches/scrollback/st-scrollback-ringbuffer-0.9.2.diff).
I made a completely new patch that allows the entire screen to be piped while
using the scrollback ringbuffer patch. Please note that the patch uses
term.line and not TLINE because I expect this patch to be applied immediately
after the externalpipe patch (since externalpipe is useless without eternal)
and thus want the patching to be seamless. Please place this patch in the
externalpipe page (https://st.suckless.org/patches/externalpipe/). Thank you
very much.
diff -up a/st.c b/st.c
--- a/st.c 2026-02-12 14:56:55.248311919 -0300
+++ b/st.c 2026-02-12 14:36:36.827197795 -0300
@@ -2513,21 +2513,21 @@ externalpipe(const Arg *arg)
/* ignore sigpipe for now, in case child exists early */
oldsigpipe = signal(SIGPIPE, SIG_IGN);
newline = 0;
- for (n = 0; n < term.row; n++) {
- bp = term.line[n];
- lastpos = MIN(tlinelen(n) + 1, term.col) - 1;
- if (lastpos < 0)
- break;
- end = &bp[lastpos + 1];
- for (; bp < end; ++bp)
- if (xwrite(to[1], buf, utf8encode(bp->u, buf)) < 0)
- break;
- if ((newline = term.line[n][lastpos].mode & ATTR_WRAP))
- continue;
- if (xwrite(to[1], "\n", 1) < 0)
- break;
- newline = 0;
- }
+ int histlen = term.screen[0].cur < term.screen[0].size
+ ? term.screen[0].cur
+ : term.screen[0].size;
+ int total = histlen + term.row;
+ for (int n = -histlen; n < term.row; n++) {
+ Line line = TLINE(n);
+ int len = tlinelen(n);
+ for (int i = 0; i < len; i++) {
+ char buf[UTF_SIZ];
+ if (xwrite(to[1], buf, utf8encode(line[i].u, buf)) < 0)
+ break;
+ }
+ if (len > 0 && !(line[len - 1].mode & ATTR_WRAP))
+ xwrite(to[1], "\n", 1);
+ }
if (newline)
(void)xwrite(to[1], "\n", 1);
close(to[1]);
