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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: display-supports-face-attributes-p bug?
Date: Thu, 09 Jun 2005 22:46:54 +0300
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> Cc: rms@gnu.org, emacs-devel@gnu.org
> From: James Cloos <cloos@jhcloos.com>
> Date: Thu, 09 Jun 2005 00:46:27 -0400
> 
> Eli> you can try "emacs --color=no" to see if that causes underlining
> Eli> to work.
> 
> Yes, that does change emacs' output.  With TERM=linux underlining
> works iff --color=no.

So that probably means Emacs thinks colors and underlining cannot be
used together on that terminal.

> I presume infocmp -d linux xterm should show the relevant differences
> between the linux and xterm terminfo files.

That is not an efficient method, as the terminfo entries have lots of
differences.  It is much better to step with a debugger through the
code in term.c in the places I mentioned earlier in this thread.