Re: allow "~" to be present in a tag name

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

On Tue, Mar 13 2018, Michal Novotny jotted:

> Hello,
>
> currently, if I try to create a tag that has tilde "~"  in name, an
> error is raised. E.g.
>
> $ git tag rpkg-util-1.4~rc1
> fatal: 'rpkg-util-1.4~rc1' is not a valid tag name.
>
> Now, actually it would be very cool if tilde was allowed in a tag name
> because we would like to use it for tagging pre-releases of (not-only
> rpm) packages.
>
> Is there some deep technical reason why tilde cannot be present in a
> tag name? I tried that e.g.

Yes, because a trailing tilde is part of git's rev syntax, see "man
git-rev-parse", or try in any repo:

    git show HEAD
    git show HEAD~2
    git show HEAD^~2

etc.

Although I guess git could learn to disambiguate that form from the tag
you're trying to create.

> git tag rpkg-util-1.4%rc1
>
> but percentage sign does not seem to be particular fitting for
> pre-release marking.
>
> Thank you
> clime