GNU bug report logs - #42232
Fix for lisp/allout-widgets void variable

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ken Manheimer <ken.manheimer <at> gmail.com>
Subject: bug#42232: closed (Re: bug#42232: Acknowledgement (Fix for
 lisp/allout-widgets void variable))
Date: Mon, 20 Jul 2020 19:22:02 +0000

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Your bug report

#42232: Fix for lisp/allout-widgets void variable

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 42232 <at> debbugs.gnu.org.

-- 
42232: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=42232
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Ken Manheimer <ken.manheimer <at> gmail.com>
To: 42232-done <at> debbugs.gnu.org
Subject: Re: bug#42232: Acknowledgement (Fix for lisp/allout-widgets void
 variable)
Date: Mon, 20 Jul 2020 15:20:49 -0400

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Fix committed in 3c410b6b4753e02269bb36914e7534eb124150dd and pushed to
main repository main and (mistakenly) emacs-27 branches

On Mon, Jul 6, 2020 at 1:44 PM GNU bug Tracking System <help-debbugs <at> gnu.org>
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From: Ken Manheimer <ken.manheimer <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Fix for lisp/allout-widgets void variable
Date: Mon, 6 Jul 2020 13:43:06 -0400

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The attached patch provides for a background void-variable error that
happens when parts of an outline are being concealed. Because the error
happens via the after-change-functions hook, it was being caught by an
allout provision and reported in the mode line.

To see the error before applying the patch, make a simple outline, activate
allout-mode, and then conceal a part of the outline by positioning on the
item whose contents you can hide and using `allout-hide-current-subtree'
(by default, bound to '\C-c SPC \C-h'). When the problem occurs you will
see a message in the mode line, like:

allout-widgets-last-hook-error stored,
allout-widgets-hook-error-handler/error (void-variable handled-conceal)
 6-Jul-2020 01:10:58 PM

You can then see that message and a full backtrace in the *Messages* buffer.

(The let declaration for the variable was probably removed because use of
the variable is oblique. It happens through `(symbol-value handling)'.)

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[0001-Provide-missing-let-definition-to-prevent-background.patch (application/octet-stream, attachment)]

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