bug#43615: 26.3; eshell: face for directory and symlink the same in terminal

[Eli Zaretskii]

> From: ams@gnu.org (Alfred M. Szmidt)
> CC: 43615@debbugs.gnu.org
> Date: Sat, 26 Sep 2020 02:22:20 -0400
> 
>    How many colors does that terminal support?
> 
> 16 colors from what I understand.  list-color-display shows:
> 
>   black                      black  #000000
>   red                red  #ff0000
>   green                      green  #00ff00
>   yellow                     yellow  #ffff00
>   blue                       blue  #0000ff
>   magenta                    magenta  #ff00ff
>   cyan                       cyan  #00ffff
>   white                      white  #ffffff

This indicates you have only 8 colors, not 16.

> I'd think that magenta would make most sense, but that would require
> changing what is used for eshell-ls-archive?

Doing TRT with just 8 colors is a tough nut, since there are 11 file
types for which Eshell uses colors.  Maybe colors should be disabled
for such terminals?  Or maybe some faces should have no color
definitions for 8-color terminals, leaving only the most frequent and
important files shown in color?