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Instead of having a default set of terminals in terminal-overrides that

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get XT added and using that as a marker for xterm(1)-like, assume that
if the terminfo(5) entry already has XT or the clear capability starts
with CSI then the terminal is VT100-like and it should be safe to send
DA requests. The DA responses trigger additional features being added.
This commit is contained in:
nicm
2020-05-16 14:46:14 +00:00
parent 21a39c997b
commit 7dbe623156
3 changed files with 110 additions and 27 deletions
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30
tty-term.c
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@ -83,6 +83,8 @@ static const struct tty_term_code_entry tty_term_codes[] = {
[TTYC_DIM] = { TTYCODE_STRING, "dim" },
[TTYC_DL1] = { TTYCODE_STRING, "dl1" },
[TTYC_DL] = { TTYCODE_STRING, "dl" },
[TTYC_DSFCS] = { TTYCODE_STRING, "Dsfcs" },
[TTYC_DSBP] = { TTYCODE_STRING, "Dsbp" },
[TTYC_DSMG] = { TTYCODE_STRING, "Dsmg" },
[TTYC_E3] = { TTYCODE_STRING, "E3" },
[TTYC_ECH] = { TTYCODE_STRING, "ech" },
@ -90,6 +92,8 @@ static const struct tty_term_code_entry tty_term_codes[] = {
[TTYC_EL1] = { TTYCODE_STRING, "el1" },
[TTYC_EL] = { TTYCODE_STRING, "el" },
[TTYC_ENACS] = { TTYCODE_STRING, "enacs" },
[TTYC_ENBP] = { TTYCODE_STRING, "Enbp" },
[TTYC_ENFCS] = { TTYCODE_STRING, "Enfcs" },
[TTYC_ENMG] = { TTYCODE_STRING, "Enmg" },
[TTYC_FSL] = { TTYCODE_STRING, "fsl" },
[TTYC_HOME] = { TTYCODE_STRING, "home" },
@ -545,21 +549,29 @@ tty_term_create(struct tty *tty, char *name, int *feat, int fd, char **cause)
goto error;
}
/* These can be emulated so one of the two is required. */
if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) {
xasprintf(cause, "terminal does not support cud1 or cud");
goto error;
/*
* If TERM has XT or clear starts with CSI then it is safe to assume
* the terminal is derived from the VT100. This controls whether device
* attributes requests are sent to get more information.
*
* This is a bit of a hack but there aren't that many alternatives.
* Worst case tmux will just fall back to using whatever terminfo(5)
* says without trying to correct anything that is missing.
*
* Also add few features that VT100-like terminals should either
* support or safely ignore.
*/
s = tty_term_string(term, TTYC_CLEAR);
if (tty_term_flag(term, TTYC_XT) || strncmp(s, "\033[", 2) == 0) {
term->flags |= TERM_VT100LIKE;
tty_add_features(feat, "bpaste,focus,title", ",");
}
/* Add RGB feature if terminal has RGB colours. */
if ((tty_term_flag(term, TTYC_TC) || tty_term_has(term, TTYC_RGB)) &&
(!tty_term_has(term, TTYC_SETRGBF) ||
!tty_term_has(term, TTYC_SETRGBB)))
tty_add_features(feat, "RGB", ":,");
/* Add feature if terminal has XT. */
if (tty_term_flag(term, TTYC_XT))
tty_add_features(feat, "title", ":,");
tty_add_features(feat, "RGB", ",");
/* Apply the features and overrides again. */
tty_apply_features(term, *feat);