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Read mailcaps again only when necessary

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* doc/lispref/files.texi (File Attributes): Document it.

* lisp/files.el (file-has-changed-p): New function.
(file-has-changed-p--hash-table): Internal variable used by the
new function (bug#51523).
* lisp/emacs-lisp/shortdoc.el (file): Mention it.

* lisp/net/mailcap.el (mailcap-parse-mailcaps): Read mailcaps again
only when at least one of the mailcap files has changed.  Fixes
bug#51523.
This commit is contained in:
Gregory Heytings 2021-11-01 14:51:57 +01:00 • committed by Lars Ingebrigtsen
parent 453d104602
commit daea9b3b44
5 changed files with 46 additions and 12 deletions
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3
lisp/emacs-lisp/shortdoc.el
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@ -358,6 +358,9 @@ There can be any number of :example/:result elements."
(file-newer-than-file-p
:no-eval (file-newer-than-file-p "/tmp/foo" "/tmp/bar")
:eg-result nil)
(file-has-changed-p
:no-eval (file-has-changed-p "/tmp/foo")
:eg-result t)
(file-equal-p
:no-eval (file-equal-p "/tmp/foo" "/tmp/bar")
:eg-result nil)