Re: [feature request] Is it possible to have git tag can be sorted and filtered by semver?

[Junio C Hamano <gitster@pobox.com>]

<rsbecker@nexbridge.com> writes:

> Currently, tags would be sorted as follows (simple example):
> 1.10.0
> 1.2.0
> 1.9.1
>
> With semver, the tags would be:
> 1.2.0
> 1.9.1
> 1.10.0
>
> My take is that this, if implemented, would need to be more general, and include prefix and suffix handling, so:
> v1.2.0
> v1.9.0
> v1.10.0

Without implemeting anything, wouldn't "--sort=version:refname"
suggested by Brian work just fine?

In the git repository:

    $ git tag --sort=version:refname | grep -e 'v2\.[0-9][0-9]*\.[0-9][0-9]*$'
    v2.0.0
    ...
    v2.0.5
    v2.1.0
    v2.1.1
    v2.1.2
    v2.1.3
    v2.1.4
    v2.2.0
    ...
    v2.9.0
    ...
    v2.9.5
    v2.10.0
    v2.10.1
    v2.10.2
    v2.10.3
    v2.10.4
    v2.10.5
    v2.11.0
    ...
    v2.45.1
    v2.45.2

sorting 2.1.x series a lot earlier than 2.10.x series that is sorted
after 2.9.x series.

Isn't it exactly what the original requester wants to see?

One mechanism I find it lacking is a mechanism to tell the tool that
-preW in X.Y.Z-preW is a suffix that signals that X.Y.Z-preW comes
before X.Y.Z, while -postW in X.Y.Z-postW is a suffix that signals
that X.Y.Z-postW comes after X.Y.Z.  Using such a mechanism, we
could say v2.1.0-rc0 comes before v2.1.0-rc1, which in turn comes
before v2.1.0-rc2, which in turn comes before v2.1.0 proper.

But other than the ordering of the final release and -rcX, I think
"--sort=version:refname" does the right thing already.