Re: [feature request] 2) Remove many tags at once and 1) Prune tags on old-branch-before-rebase

From: Junio C Hamano <gitster@pobox.com>
Date: Mar 7, 2013, 23:33 UTC
Message-ID: <7v38w6lr8n.fsf@alter.siamese.dyndns.org>
In-Reply-To: <51390E43.60704@giref.ulaval.ca>

Eric Chamberland <Eric.Chamberland@giref.ulaval.ca> writes:

Show 7 quoted lines

> 1) git tag --delete-tags-to-danglings-and-unnamed-banches
>
> This would be able to remove all tags that refers to commits which are
> on branches that are no more referenced by any branch name.  This is
> happening when you tag something, then "git rebase".  Your tag will
> still be there on the old-and-before-rebase branch and won't be
> "pruned" by any git command... (that I know of...)

Not interesting for at least two reasons.

Why are "tags" any special? "git branch --delete-merged" may also be of interest, and for that matter "git update-ref -d" to deal with any ref in general would be equally valid if such an option were a good idea.

What you want is a way to compute, given a set of tags (or refs in general) and a set of branches (or another set of refs in general), find the ones in the former that none of the latter can reach. With that, you can drive "git tag -d $(that way)".

In other words, the feature does not belong to "git tag" command.

> 2) git tag -d "TOKEN*"

Again, not interesting.  You already have:

    git for-each-ref --format='%(refname:short)' refs/tags/TOKEN\* |
    xargs -r git tag -d