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If tmux receives a palette request (OSC 4) in a pane and the palette

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entry has not been set, send a request to the most recently used client
and forward any response instead. Based on change from Tim Culverhouse
in GitHub issue 4665.
This commit is contained in:
nicm
2025-10-30 07:41:19 +00:00
parent 2c08960f4e
commit 1e61e52400
5 changed files with 340 additions and 48 deletions
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76
tty-keys.c
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@@ -59,6 +59,7 @@ static int tty_keys_device_attributes2(struct tty *, const char *, size_t,
size_t *);
static int tty_keys_extended_device_attributes(struct tty *, const char *,
size_t, size_t *);
static int tty_keys_palette(struct tty *, const char *, size_t, size_t *);
/* A key tree entry. */
struct tty_key {
@@ -804,6 +805,17 @@ tty_keys_next(struct tty *tty)
goto partial_key;
}
/* Is this a palette response? */
switch (tty_keys_palette(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_UNKNOWN;
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Is this a mouse key press? */
switch (tty_keys_mouse(tty, buf, len, &size, &m)) {
case 0: /* yes */
@@ -1699,3 +1711,67 @@ tty_keys_colours(struct tty *tty, const char *buf, size_t len, size_t *size,
return (0);
}
/* Handle OSC 4 palette colour responses. */
static int
tty_keys_palette(struct tty *tty, const char *buf, size_t len, size_t *size)
{
struct client *c = tty->client;
u_int i, start;
char tmp[128], *endptr;
int idx;
struct input_request_palette_data pd;
*size = 0;
/* First three bytes are always \033]4. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != ']')
return (-1);
if (len == 2)
return (1);
if (buf[2] != '4')
return (-1);
if (len == 3)
return (1);
if (buf[3] != ';')
return (-1);
if (len == 4)
return (1);
/* Parse index. */
idx = strtol(buf + 4, &endptr, 10);
if (endptr == buf + 4 || *endptr != ';')
return (-1);
if (idx < 0 || idx > 255)
return (-1);
/* Copy the rest up to \033\ or \007. */
start = (endptr - buf) + 1;
for (i = start; i < len && i - start < sizeof tmp; i++) {
if (buf[i - 1] == '\033' && buf[i] == '\\')
break;
if (buf[i] == '\007')
break;
tmp[i - start] = buf[i];
}
if (i - start == sizeof tmp)
return (-1);
if (i > 0 && buf[i - 1] == '\033')
tmp[i - start - 1] = '\0';
else
tmp[i - start] = '\0';
*size = i + 1;
/* Work out the colour. */
pd.c = colour_parseX11(tmp);
if (pd.c == -1)
return (0);
pd.idx = idx;
input_request_reply(c, INPUT_REQUEST_PALETTE, &pd);
return (0);
}