bug#50462: 27.2; emacsclient syntax highlight failure

[RDS]

1) Using standard agetty, not emacs terminal.

2) M-x list-faces-display (after fault)

All OK except

  font-lock-string-face (black-on-black)

  sh-escaped-newline "

  toolbar "

  window-divider-last-pixel "

Expected this, of course. Note that once the fault occurs, it is permanent (until the daemon restarted.). Any new files loaded into buffers exhibit the same loss of string highlight.

On Wed, Sep 8, 2021 at 12:51 AM Eli Zaretskii <eliz@gnu.org> wrote:

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: RDS <rds1944@gmail.com>,  50462@debbugs.gnu.org
> Date: Wed, 08 Sep 2021 08:54:11 +0200
>
> > So it sounds like the faces lost their colors or something.  When the
> > problem happens, what does "M-x list-faces-display RET" show for the
> > font-lock faces: do they appear in their normal colors?
>
> If this is with a terminal Emacs, could this be related to the face
> terminal bug you fixed the other day in Emacs 28?

Unlikely: AFAIU, that bug only appeared once we switched to storing
faces in a hash-table, and only when clone-frame was calling that
code.