GNU bug report logs - #44942
28.0.50; Emacs should print a backtrace on uncaught errors in batch mode

Previous Next

Full log

View this message in rfc822 format

From: Philipp Stephani <p.stephani2 <at> gmail.com>
To: 44942 <at> debbugs.gnu.org
Subject: bug#44942: 28.0.50; Emacs should print a backtrace on uncaught errors in batch mode
Date: Sun, 29 Nov 2020 16:27:04 +0100

[Message part 1 (text/plain, inline)]

Am So., 29. Nov. 2020 um 11:48 Uhr schrieb Philipp Stephani
<p.stephani2 <at> gmail.com>:
>
>
> $ emacs -Q -batch -eval '(progn (defun foo () (error "Boo")) (foo))'
> Boo
>
> Emacs should print a backtrace here to make it possible to debug such
> errors.  It's possible to force Emacs to print a backtrace by binding
> `debug-on-error', however, that is incorrect because it changes the
> meaning of `with-demoted-errors' and `condition-case-unless-debug',
> causing code that would normally work to fail with an error.  Instead,
> `signal' should print a backtrace if in batch mode and if it jumps to
> the top-level error handler.  It looks like this logic could be
> special-cased in signal_or_quit, similar to the debugger logic.
>


I've attached a patch.

[0001-Print-a-backtrace-on-unhandled-errors-in-batch-mode-.patch (text/x-patch, attachment)]

Previous Next

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