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bug#33092: 26.1; Re-running shell wipes font-lock from xterm-color
From: |
Lars Ingebrigtsen |
Subject: |
bug#33092: 26.1; Re-running shell wipes font-lock from xterm-color |
Date: |
Wed, 30 Oct 2019 20:18:13 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
Allen Li <darkfeline@felesatra.moe> writes:
> The `shell' command will call `make-comint-in-buffer' and `shell-mode'.
>
> `shell-mode' will then call `comint-mode' as a derived mode.
>
> `comint-mode' will call `kill-all-local-variables'.
>
> `comint-mode' also adds `font-lock-defontify' to
> `change-major-mode-hook'. Since we're already in `shell-mode' derived
> from `comint-mode', switching "back" to `shell-mode' wipes font-lock.
>
> I can work around this pretty easily in my personal config, by removing
> `font-lock-defontify' from `change-major-mode-hook' with a well-placed
> advice, but the current behavior doesn't seem comfortable to me.
Yes, that seems odd. Unfortunately the commit log for this just says:
commit 3dd4c1c5af3cdf77ba98b7255ec4034051107c6f
Author: Richard M. Stallman <rms@gnu.org>
Date: Tue Sep 10 16:44:58 2002 +0000
(comint-mode): Add font-lock-defontify to change-major-mode-hook.
So I have no idea what this was supposed to fix. Richard, do you
remember, by any chance?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
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Lars Ingebrigtsen <=