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| -rw-r--r-- | lispref/files.texi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lispref/files.texi b/lispref/files.texi index e27ab8f81d..02c863421f 100644 --- a/lispref/files.texi +++ b/lispref/files.texi @@ -1526,6 +1526,14 @@ value of @code{?/}. @end defvar @end ignore +@defun file-name-extension filename &optional period +This function returns @var{filename}'s final ``extension,'' if any, +after applying @code{file-name-sans-versions} to remove any +version/backup part. If @var{period} is non-nil, then the returned +value includes the period that delimits the extension, and if +@var{filename} has no extension, the value is @code{""}. +@end defun + @node Directory Names @comment node-name, next, previous, up @subsection Directory Names |