GNU bug report logs - #65267
30.0.50; modifying debug-ignored-errors during startup with --debug-init is broken

Previous Next

Full log

Message #23 received at 65267 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Štěpán Němec <stepnem <at> smrk.net>
Cc: 65267 <at> debbugs.gnu.org
Subject: Re: bug#65267: 30.0.50; modifying debug-ignored-errors during
 startup with --debug-init is broken
Date: Sun, 13 Aug 2023 12:19:31 -0400

> --8<--
> initdir=$(mktemp -d)
>
> echo "(add-to-list 'debug-ignored-errors 'my-error)" >"$initdir"/init.el
> emacs --debug-init --init-dir="$initdir" \
>       --eval '(message "%S" debug-ignored-errors)'
>
> rm -rf "$initdir"
> --8<--
>
> In the emacs thus started, the value of `debug-ignored-errors' is
> "(my-error startup--witness)" instead of `my-error' added to
> the default ignored error symbol list.

Yeah, it's wrong, but I'm not sure how to fix it:
`--debug-init` needs to change the value of `debug-ignored-errors` while
`init.el` is executed, but it's not clear how to "revert" to "the value
it would have if we had not changed it" once we're finished processing
`init.el`.

Maybe we should introduce a new `inhibit-debug-ignored-errors` which we
could let-bind while loading `init.el` without having to modify
`debug-ignored-errors` itself?


        Stefan

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.