GNU bug report logs - #55905
warn about misplaced or duplicated doc strings, `declare` or `interactive` forms

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From: Mattias Engdegård <mattiase <at> acm.org>
To: 55905 <at> debbugs.gnu.org
Subject: bug#55905: warn about misplaced or duplicated doc strings, `declare` or `interactive` forms
Date: Sat, 11 Jun 2022 14:07:03 +0200

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

In function definitions, doc strings, `declare` and `interactive` forms are each optional but must appear in that order and duplications are not permitted. Many violations against these rules go undetected.

The attached patch adds checks to `defun` and `defmacro`. Violations result in compilation warnings but it could be changed into hard errors if desired. It also accepts `(:documentation EXPR)` as alternative to a doc string literal, which currently doesn't work i all cases.

Applying it reveals a handful of mistakes in the Emacs source tree, and in some external packages.

[0001-function-and-macro-attribute-order-warning-patch.patch (application/octet-stream, attachment)]

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