GNU bug report logs - #9570
24.0.50; "debug-on-entry: Definition of ... is not a list"

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Package: emacs;

Reported by: "Drew Adams" <drew.adams <at> oracle.com>

Date: Thu, 22 Sep 2011 03:49:01 UTC

Severity: minor

Tags: fixed

Found in versions 24.3, 24.0.50

Fixed in version 24.4

Done: npostavs <at> users.sourceforge.net

Bug is archived. No further changes may be made.

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From: "Drew Adams" <drew.adams <at> oracle.com>
To: 9570 <at> debbugs.gnu.org
Subject: bug#9570: 24.0.50; "debug-on-entry: Definition of ... is not a list"
Date: Wed, 21 Sep 2011 20:48:20 -0700
emacs -Q
 
Load file fuzzy.el, available in the tar or zip here:
http://cx4a.org/software/auto-complete/#Downloads
(The file is small.)
 
M-x debug-on-entry isearch-message-prefix RET
 
raises this error:
 
debug-on-entry: Definition of isearch-message-prefix is not a list
 
The file is contains this advice:
 
(defadvice isearch-message-prefix (after fuzzy-isearch-message-prefix activate)
  (if fuzzy-isearch
      (setq ad-return-value (concat fuzzy-isearch-prefix ad-return-value))
    ad-return-value))
 
I seem to vaguely recall some problem associated with lexbind, advice,
and the debugger (and perhaps byte-compiling?).  But a search of the
Elisp manual and some bug reports turned up nothing.  I thought that
such problems had already been ironed out, but perhaps not.
 
It's very hard to find the cause of such an error - even just locating
the code that leads to it is not easy.  And it's not clear to me now
what a user can/should do about it.  What's the deal?  If there is
something that users must not do or must avoid, then please document it.
 
In GNU Emacs 24.0.50.1 (i386-mingw-nt5.1.2600)
 of 2011-09-19 on 3249CTO
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (4.5) --no-opt'
 





This bug report was last modified 8 years and 110 days ago.

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