GNU bug report logs - #24882
25.1; edebug-defun fails when lparen in string at BOL

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Package: emacs;

Reported by: David Bremner <david <at> tethera.net>

Date: Sat, 5 Nov 2016 13:34:01 UTC

Severity: normal

Tags: fixed

Found in version 25.1

Fixed in version 27.1

Done: Noam Postavsky <npostavs <at> users.sourceforge.net>

Bug is archived. No further changes may be made.

Full log

Message #14 received at 24882 <at> debbugs.gnu.org (full text, mbox):

From: David Bremner <david <at> tethera.net>
To: Matt Armstrong <marmstrong <at> google.com>,
 John Mastro <john.b.mastro <at> gmail.com>
Cc: 24882 <at> debbugs.gnu.org
Subject: Re: bug#24882: 25.1; edebug-defun fails when lparen in string at BOL
Date: Wed, 30 Nov 2016 07:59:44 -0400

Matt Armstrong <marmstrong <at> google.com> writes:

> Indeed this heuristic appears to be intentional, justified by an apeal
> to efficiency.  The Emacs manual uses an example very similar to
> `edebug-fail' above as a "what not to do" case:
> https://www.gnu.org/software/emacs/manual/html_node/emacs/Left-Margin-Paren.html
>
> David, if you agree with this rationale, mind closing the bug?

For what it's worth, I don't agree with the rationale. The debugger
should work on all syntactically correct defuns. If left parens in the
left margin are forbidden in emacs lisp, then I expect a syntax error
during normal evaluation.

At minimum, the debugger should detect this situation, rather than
silently doing the wrong thing.
This bug report was last modified 7 years and 106 days ago.

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