From: Alan Mackenzie <acm@muc.de>
To: 59213@debbugs.gnu.org
Subject: bug#59213: Emacs 29: Edebug fails to instrument a parameter whose name begins with _
Date: Sat, 12 Nov 2022 09:35:58 +0000 [thread overview]
Message-ID: <Y29o/uABZE7n/u/3@ACM> (raw)
Hello, Emacs.
In Emacs 29 (not started with -Q, but...),
I instrumented for edebug a function which looked like:
(defun c-trim-found-types (beg end _old-len) ....)
, the compilation being with lexical-binding: t.
During the edebug session, I attempted
e _old-len RET.
Instead of giving me the value of _old-len (which was 3) it gave the
error message
Error: Symbol's value as variable is void: _old-len
.. This is a bug.
Just because a function doesn't use a particular argument (here
_old-len) doesn't mean the person debugging it isn't interested in its
value. In this particular case, it was extremely interesting, because
beg and end were unequal, and _old-len was 3.
In the end, I found out the info with the d command (backtrace), but I
shouldn't have to.
--
Alan Mackenzie (Nuremberg, Germany).
next reply other threads:[~2022-11-12 9:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-12 9:35 Alan Mackenzie [this message]
2022-11-14 2:48 ` bug#59213: Emacs 29: Edebug fails to instrument a parameter whose name begins with _ Michael Heerdegen
2022-11-14 3:53 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-11-14 10:28 ` Alan Mackenzie
2022-11-14 12:50 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-11-14 12:56 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-02-10 18:51 ` Alan Mackenzie
2023-02-10 22:05 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-02-11 7:26 ` Eli Zaretskii
2023-02-13 3:26 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-02-13 12:54 ` Eli Zaretskii
2023-02-11 11:17 ` Alan Mackenzie
2023-02-14 21:47 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-02-14 22:19 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-02-18 18:08 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-02-18 18:46 ` Alan Mackenzie
2023-02-20 22:21 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-11-15 13:08 ` Eli Zaretskii
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