GNU bug report logs - #73584
29.3; read-key

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 73584 <at> debbugs.gnu.org, stefankangas <at> gmail.com, Emacs-hacker2023 <at> jovi.net
Subject: bug#73584: 29.3; read-key
Date: Sun, 13 Oct 2024 14:41:34 +0300

> From: Stefan Monnier <monnier <at> iro.umontreal.ca>
> Cc: Stefan Kangas <stefankangas <at> gmail.com>,  Emacs-hacker2023 <at> jovi.net,
>   73584 <at> debbugs.gnu.org
> Date: Thu, 03 Oct 2024 11:43:25 -0400
> 
> > The OP shot himself in the foot by invoking by hand a low-level
> > function with a wrong argument.  Interactive functions and high-level
> > APIs must check their arguments right away, but low-level functions
> > like this one do not.
> 
> I think the "bug" is indeed not in the fact that we check too late for
> a string.  I guess we could say that any code which temporarily rebinds
> the global map should be super-extra careful never to signal an error,
> and prevent itself from being Edebugged etc... but it would be
> preferable for the debuggers to "handle it".

Is the patch below acceptable as the solution to this?

diff --git a/lisp/emacs-lisp/backtrace.el b/lisp/emacs-lisp/backtrace.el
index 120972d..e353970 100644
--- a/lisp/emacs-lisp/backtrace.el
+++ b/lisp/emacs-lisp/backtrace.el
@@ -202,6 +202,7 @@ backtrace-mode-map
   "+"   #'backtrace-multi-line
   "-"   #'backtrace-single-line
   "."   #'backtrace-expand-ellipses
+  "C-]"    #'abort-recursive-edit
   "<follow-link>" 'mouse-face
   "<mouse-2>"     #'mouse-select-window

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