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Fix 8-color PuTTY -nw sessions broken by a recent commit

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* src/term.c (init_tty): Fix the change which introduced support
for the terminfo Tc flag.  The code as installed broke colors in
PuTTY -nw sessions, because 'tigetflag' returned -1, which is
non-zero, so it was treated as the sign that true color is
supported.  But if the value returned by 'tigetflag' is -1, it means
the capability is not a boolean one, so that's not to be used as a
valid support for 24-bit color.  (Bug#44950)
This commit is contained in:
Eli Zaretskii 2021-11-11 16:55:11 +02:00
parent d75558f11c
commit 386289bdc8
1 changed files with 1 additions and 1 deletions
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src/term.c
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@ -4155,7 +4155,7 @@ use the Bourne shell command 'TERM=...; export TERM' (C-shell:\n\
/* Fall back to xterm+direct (semicolon version) if Tc is set
(de-facto standard introduced by tmux) or if requested by
the COLORTERM environment variable. */
else if (tigetflag("Tc")
else if ((tigetflag("Tc") != -1)
|| ((bg = getenv("COLORTERM")) != NULL
&& strcasecmp(bg, "truecolor") == 0))
{