GNU bug report logs - #65622
Inappropriate suppression of backtrace on an error

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Message #8 received at 65622 <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Alan Mackenzie <acm <at> muc.de>
Cc: 65622 <at> debbugs.gnu.org
Subject: Re: bug#65622: Inappropriate suppression of backtrace on an error
Date: Thu, 31 Aug 2023 01:16:42 +0200

Alan Mackenzie <acm <at> muc.de> writes:

> Hello, Emacs.
> (v) Set debug-on-error to t with M-: (setq debug-on-error t).
> (vi) Repeat (iv).  This throws the same error, without a backtrace.  This
>   lack of a backtrace is a bug.

I think you just need (setq eval-expression-debug-on-error t).

Stumbled over the same issue ... yesterday?, or so.  Also when debugging
Edebug.

Maybe people would like debug-on-error -> t taking precedence over
eval-expression-debug-on-error -> nil?  The danger is they turn both off
by default and then forget about the second one.

Michael.

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