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| author | Gregory Heytings <gregory@heytings.org> | 2021-11-01 14:51:57 +0100 |
|---|---|---|
| committer | Lars Ingebrigtsen <larsi@gnus.org> | 2021-11-01 14:51:57 +0100 |
| commit | daea9b3b44a4dc09017c3d2d5b8eaa4c68cdd2b0 (patch) | |
| tree | 700b380dd3566886993346417b467f17d22ddf86 /doc/lispref/files.texi | |
| parent | 453d104602a04521afd46b57c05462b6bc74305b (diff) | |
| download | emacs-daea9b3b44a4dc09017c3d2d5b8eaa4c68cdd2b0.tar.gz emacs-daea9b3b44a4dc09017c3d2d5b8eaa4c68cdd2b0.tar.bz2 emacs-daea9b3b44a4dc09017c3d2d5b8eaa4c68cdd2b0.zip | |
Read mailcaps again only when necessary
* 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.
Diffstat (limited to 'doc/lispref/files.texi')
| -rw-r--r-- | doc/lispref/files.texi | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/lispref/files.texi b/doc/lispref/files.texi index 59e18b32c2e..250f7a3f9f5 100644 --- a/doc/lispref/files.texi +++ b/doc/lispref/files.texi @@ -1314,6 +1314,15 @@ on the 19th, @file{aug-20} was written on the 20th, and the file @end example @end defun +@defun file-has-changed-p filename +This convenience function is useful when, for instance, parsing files +run-time, and you typically want to re-read a file when it has +changed. This function returns non-@code{nil} the first time it's +called on @var{filename} in an Emacs session, but will return +@code{nil} on subsequent calls in that session (unless the file +changes its modification time). +@end defun + @defun file-attributes filename &optional id-format @anchor{Definition of file-attributes} This function returns a list of attributes of file @var{filename}. If |