bug#34606: Emacs colors are off in screen sessions

[Eli Zaretskii]

> Cc: 34606@debbugs.gnu.org
> From: Clément Pit-Claudel <cpitclaudel@gmail.com>
> Date: Thu, 21 Feb 2019 11:37:25 -0500
> 
> > Emacs on a TTY doesn't control the colors in RGB terms, it just tells
> > the terminal to display color number N.  What you actually see as
> > result is up to the terminfo entry and the terminal emulator, AFAIK
> > mostly the latter.  So I'd suggest to dig into 'screen's
> > customizations to see how to affect the colors (I customized the
> > colors of PuTTY to get something I like, for example).
> 
> I don't understand. If that is the case, how can changing the value of the 
> TERM environment variable change the colors displayed by emacs?

Because the terminfo entry defines both the number of colors and the
specific command to turn on a given color.  (If that doesn't explain
what you were asking about, maybe I didn't understand the question
well enough.)