bug#8159: file-name-sans-version fails for some git files

[Reuben Thomas]

On 4 March 2011 07:55, Eli Zaretskii <eliz@gnu.org> wrote:
>> Date: Thu, 3 Mar 2011 22:58:14 +0000
>> From: Reuben Thomas <rrt@sc3d.org>
>> Cc: 8159@debbugs.gnu.org
>>
>> \\(?:~\\|\\.~[-[:alnum:]:#@^._]+\\(~[[:digit:]]+\\)?~\\)
>>
>> would cope with just the git version scheme, while not swallowing
>> multiple backup suffixes.
>
> I would suggest a comment mentioning the git case with an example.

So, something like:

(defvar file-name-version-regexp
  "\\(?:~\\|\\.~[-[:alnum:]:#@^._]+\\(~[[:digit:]]+\\)?~\\)"
  ;; The optional ~[[:digit]]+ matches relative versions in git like `HEAD~2'
  "Regular expression matching the backup/version part of a file name.
Used by `file-name-sans-versions'.")

?

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