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fix(lib): find-subling-file-search: wrong-number-of-args error

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I backported `find-sibling-file` from Emacs 29+ in 198fe82, but it
passes a third argument (REGEXP) to `file-expand-wildcards` which wasn't
introduced until 29, so users on 28 or earlier would see a
wrong-number-of-arguments error (see #7795).

Rather than backport the entire `file-expand-wildcards`
function (risking other edge cases), I've advised its usage in
`find-sibling-file-search` to behave as it would in 29+ with a non-nil
REGEXP argument.

Amend: 198fe82b6d
Fix: #7795
This commit is contained in:
Henrik Lissner 2024-04-04 13:00:12 -04:00
parent d166d754d6
commit 38a3adcf0e
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1 changed files with 6 additions and 1 deletions
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7
lisp/lib/files.el
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@ -594,7 +594,12 @@ see), and if nil, defaults to `find-sibling-rules'."
(nconc
results
(mapcar #'expand-file-name
(file-expand-wildcards expansion nil t)))))))))
;; `file-expand-wildcards' has a new REGEXP
;; argument in 29+ that is needed here. This swap
;; makes it behave as if REGEXP == t.
(letf! (defun wildcard-to-regexp (wildcard)
(concat "\\`" wildcard "\\'"))
(file-expand-wildcards expansion nil))))))))))
;; Delete the file itself (in case it matched), and remove
;; duplicates, in case we have several expansions and some match
;; the same subsets of files.