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Look for feature code 21 for DECSLRM and 28 for DECFRA in the device

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attributes and also accept level 1 (there is no hardware with this but
some emulators may use it). Pointed out by James Holderness.
This commit is contained in:
nicm 2024-03-21 11:47:55 +00:00
parent 0ae8b681b2
commit 6f0254e6a8
1 changed files with 7 additions and 17 deletions
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24
tty-keys.c
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@ -1314,26 +1314,21 @@ tty_keys_device_attributes(struct tty *tty, const char *buf, size_t len,
break;
}
/*
* Add terminal features. Hardware level 5 does not offer SIXEL but
* some terminal emulators report it anyway and it does not harm
* to check it here.
*
* DECSLRM and DECFRA should be supported by level 5 as well as level
* 4, but VTE has rather ruined it by advertising level 5 despite not
* supporting them.
*/
/* Add terminal features. */
switch (p[0]) {
case 64: /* level 4 */
tty_add_features(features, "margins,rectfill", ",");
/* FALLTHROUGH */
case 61: /* level 1 */
case 62: /* level 2 */
case 63: /* level 3 */
case 64: /* level 4 */
case 65: /* level 5 */
for (i = 1; i < n; i++) {
log_debug("%s: DA feature: %d", c->name, p[i]);
if (p[i] == 4)
tty_add_features(features, "sixel", ",");
if (p[i] == 21)
tty_add_features(features, "margins", ",");
if (p[i] == 28)
tty_add_features(features, "rectfill", ",");
}
break;
}
@ -1405,11 +1400,6 @@ tty_keys_device_attributes2(struct tty *tty, const char *buf, size_t len,
* we can't use level 5 from DA because of VTE.
*/
switch (p[0]) {
case 41: /* VT420 */
case 61: /* VT510 */
case 64: /* VT520 */
tty_add_features(features, "margins,rectfill", ",");
break;
case 'M': /* mintty */
tty_default_features(features, "mintty", 0);
break;