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From Johan Corveleyn <jcor...@gmail.com>
Subject Re: How to discover which files are tagged or branced in a hook script?
Date Mon, 18 Dec 2017 11:03:06 GMT
On Mon, Dec 18, 2017 at 8:44 AM, Branko ─îibej <brane@apache.org> wrote:
> On 18.12.2017 08:16, Andreas Krey wrote:
>> On Sun, 17 Dec 2017 01:22:06 +0000, Branko ??ibej wrote:
>> ...
>>> The /path/ of the file implies which branch or tag it belongs to. There
>>> is no other information you need.
>> Oh yes, there is. Knowing which files are included in the tag
>> is fine (and a very basic property), but I'd also like to be
>> able to find out
>>
>> - which revision of the source tree the tag was taken of,
>
> Recorded as the copied-from revision.
>
>> - which subtree it was taken of,
>
> Recorded as the copied-from path.
>
>> - and from the other end: which is the last tag
>>   taken from a specific subtree.
>
> Ah, that one is not recorded.

Indeed, that's a well known shortcoming of the way tags are currently
emulated in SVN (the emulation doesn't support looking up the list of
tags a file was ever copied to, because we have no "copy-to"
information). To support this, SVN would either have to record copy-to
information, or add a new tag feature / concept.

I just browsed to some old Subversion notes, and found this particular
issue mentioned in the notes of "EuroOSCON 2005" [1]. Time flies :-)
...

For making the /tags directory "write-once", most installations use
some pre-commit hook. I've been using a variation of David Weintraub's
excellent pre-commit-access-control-hook.pl [2]. Here you can give
/tags the "add-only" permission (configured in some ini file). I've
googled around a bit, and David has continued his set of Subversion
hook scripts on GitHub [3], so there you can find a newer version of
those scripts.

[1] The bullet starting with 'Subversion has no way to answer "What
branches/tags is this version of this file present in?"' in
http://svn.apache.org/repos/asf/subversion/trunk/notes/EuroOSCON-2005-vc-bof.txt

[2] https://svn.haxx.se/users/archive-2006-11/0564.shtml

[3] https://github.com/qazwart/SVN-Precommit-Kitchen-Sink-Hook
And his SVN-Watcher hook: https://github.com/qazwart/SVN-Watcher-Hook

-- 
Johan

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