bug#81428: 31.0.90; add support for the kmscon terminal emulator

> From: Sven Joachim <[email protected]>
> Cc: [email protected]
> Date: Sat, 01 Aug 2026 13:18:03 +0200
> 
> On 2026-08-01 12:02 +0300, Eli Zaretskii wrote:
> 
> >> Cc: [email protected]
> >> Date: Sat, 18 Jul 2026 12:39:13 +0300
> >> From: Eli Zaretskii <[email protected]>
> >> 
> >> > Cc: Sven Joachim <[email protected]>
> >> > Date: Thu, 16 Jul 2026 20:04:51 +0200
> >> > From: Sven Joachim via "Bug reports for GNU Emacs,
> >> >  the Swiss army knife of text editors" <[email protected]>
> >> > 
> >> > Kmscon (https://www.freedesktop.org/wiki/Software/kmscon/) is a simple
> >> > terminal emulator based on Linux kernel mode setting. It is an attempt
> >> > to replace the in-kernel VT implementation with a userspace console.
> >> > 
> >> > Starting with version 10.0.0, kmscon uses its own terminfo entry by
> >> > default.  Although it supports 24-bit TrueColor mode, I found that
> >> > M-x list-colors-display only lists eight colors.  The attached patch
> >> > rectifies that, giving me the same colors as with TERM=xterm-direct.
> >> 
> >> Thanks, but could you please add a NEWS entry that calls out this
> >> addition?
> >
> > I added a NEWS entry myself and installed the changes.
> 
> Thanks for doing so, and apologies for not having replied sooner.
> 
> Personally I think this change is not really NEWS worthy, for all it
> does is change the output of list-colors-display.  I see it more as a
> workaround for a deficiency in Emacs, there has been a lengthy previous
> discussion in bug #69598 already (which I only learned about today).

Supporting a new kind of terminal is always NEWS-worthy IMO.