GNU bug report logs - #65852
30.0.50; image-auto-resize :type has choices in wrong order

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From: Mattias Engdegård <mattias.engdegard <at> gmail.com>
To: Stefan Kangas <stefankangas <at> gmail.com>
Cc: 65852 <at> debbugs.gnu.org, Mauro Aranda <maurooaranda <at> gmail.com>
Subject: bug#65852: 30.0.50; image-auto-resize :type has choices in wrong order
Date: Tue, 12 Sep 2023 16:42:41 +0200

[Message part 1 (text/plain, inline)]

I now see that we have an existing defcustom check that runs very late in the compilation.
Although I prefer this kind of check to be carried out during macro-expansion, doing so has the disadvantage that actual values aren't always available. On the other hand, defcustom arguments are usually constants.

Anyway, I went overboard and wrote a sizeable expansion to the current set of warnings and now also checks :type args in define-widget (see attached patch). Try it out and tell me what you think. Maybe the regexp check is too ad-hocky.

Another warning that I rather like but may give too many false positives is that of `const` and `other` types without an actual value which is then assumed to be nil. This seems to be an undocumented 'feature' but it doesn't help readability; it's often unclear whether `nil` was intended or just a result of a forgotten value.

[more-defcustom-warnings.diff (application/octet-stream, attachment)]

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