Re: [feature request] gitweb: tags in history
On Sat, 21 Aug 2010, Jean Delvare wrote:
> On Sat, 21 Aug 2010 01:22:05 -0700 (PDT), Jakub Narebski wrote:
>> Jean Delvare <khali@linux-fr.org> writes:
>>
>>> I have a feature request for gitweb. In the history view, I would like
^^^^^^^
|
I'm very sorry, somehow I didn't notice this part --/Show 38 quoted lines
>>> to be (optionally) able to see the tags, interlaced with the actual
>>> commits. The idea is to get an immediate view of all commits that
>>> happened between specific tags.
>>>
>>> The actual format for displaying the tags can certainly be discussed, I
>>> have no strong opinion on this myself. We may want to let the admin
>>> filter which tags should show up that way, maybe even letting him/her
>>> define primary and secondary tag formats (think main releases vs.
>>> release candidates) for nicer output. Then we may want to group (or
>>> hide) tags when a file hasn't been modified in a long time. But these
>>> are implementation details, even the raw functionality would be quite
>>> useful IMHO, and hopefully not too difficult to implement.
>>
>> Currently in 'shortlog' view you can see 'ref' markers... which
>> include tags.
>>
>> For example 'shortlog' view for 'maint' branch has the following
>> fragment:
>>
>> 2010-07-28 Matthieu Moy Document ls-files -t as semi-obsolete.
>> 2010-07-27 Junio C Hamano Git 1.7.2.1 [v1.7.2.1]
>> 2010-07-27 Junio C Hamano Sync with 1.7.1.2
>> 2010-07-27 Junio C Hamano Git 1.7.1.2 [v1.7.1.2]
>> 2010-07-27 Junio C Hamano Sync with 1.7.0 series
>> 2010-07-27 Junio C Hamano Git 1.7.0.7 [v1.7.0.7]
>>
>> where e.g. [v1.7.2.1] is ref marker for 'v1.7.2.1' tag.
>>
>> If you have something different in mind, please provide moackup,
>> either as ASCII-art, or link to HTML or image.
>
> Yes, visually this would be very fine with me.
>
> But shortlog is a repository-wide view, while I need the same for
> history which is a file-specific view. Things are obviously a little
> more complex there, because for a given file, it is statistically
> unlikely that each commit affecting the file in question corresponds to
> a tag.
At least in git repository the 'Git X.Y.Z' commit, which is tagged with vX.Y.Z signed tag, touches only Documentation/RelNotes-X.Y.Z (and changes Documentation/RelNotes symlink to point to it, if needed), changes DEF_VER in GIT-VERSION-GEN (fallback version), and updates Documentation/git.txt (for example adding link to newest RelNotes).
So it is very unlikely that for a given file there would be any tag that points to commit in history of a file.
Show 5 quoted lines
> So we have to find the best tag to display in front of
> each commit (easiest bet would be the next tag time-wise) and maybe
> improve a bit from there (for example by not showing the same tag
> twice). But then again I would be very happy with a relatively raw
> output for the time being.
It would be unfortunately more costly than ref markers in 'shortlog' and 'log' views, because it is not enough to get all refs and use reverse mapping (from commit to the tag that points to it). There is decorate / name-rev, but it creates some performance cost.
So it wouldn't be easy to create a UI for this (ref markers are not good, as they are meant to point directly to commit, not as 'tag pagination'), and it wouldn't be very easy to get data that is needed for that.
But this should be possible...
--
Jakub Narebski
Poland
Jean Delvare