GNU bug report logs - #563
`find-func.el': interactive-form of `find-library' fails

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 563 in the body.
You can then email your comments to 563 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: "Richard Copley" <rcopley <at> gmail.com>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: `find-func.el': interactive-form of `find-library' fails
Date: Tue, 15 Jul 2008 15:46:55 +0100

To reproduce,
   Visit a library file containing a `require' form, e.g.,
   "M-x find-library RET yow RET". Search for a `require' form and
   position point on its the opening left parenthesis.  Invoke
   `find-library' interactively with "M-x find-library RET".

Symptom
   Instead of prompting for a library name, Emacs displays the error message
   `Scan error: "Unbalanced parentheses", 1222, 1'.

Problem
   The error is in the interactive form of `find-library' in `find-func.el'.
   If point is over the opening left-paren of the `require' form then
   `function-called-at-point' returns `require', whereupon `backward-up-list'
   fails because point is not in a list.

Suggestions (for what they're worth :)
   (a) Handle this special case in the `find-library' interactive form.
   (b) Modify `function-called-at-point' to do what its docstring says.
   (c) In the `find-function' interactive form, use `condtition-case'
       to detect errors in computing the default.



In GNU Emacs 22.2.1 (i386-mingw-nt6.0.6001)
 of 2008-03-26 on RELEASE
Windowing system distributor `Microsoft Corp.', version 6.0.6001
configured using `configure --with-gcc (3.4)'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ENG
  locale-coding-system: cp1252
  default-enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  show-paren-mode: t
  encoded-kbd-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  blink-cursor-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  line-number-mode: t

Message #12 received at 563-done <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Richard Copley <rcopley <at> gmail.com>
Cc: 563-done <at> debbugs.gnu.org
Subject: Re: bug#563: `find-func.el': interactive-form of `find-library' fails
Date: Tue, 12 Aug 2008 23:08:37 -0400

Fix sync'd from trunk to 22, bug closed.

2008-08-13  Martin Rudalics  <rudalics <at> gmx.at>

            * emacs-lisp/find-func.el (find-library): Wrap search for
            library name in condition-case to avoid reporting a scan-error.
            (Bug#563)  (sync from trunk 2008-01-25)

Previous Next

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