Re: [PATCH/RFC] git-svn: don't create master if another head exists

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Marcin Owsiany <marcin@xxxxxxxxxx> writes:

> git-svn insists on creating the "master" head (unless it exists) on every
> "fetch". While it is useful that it gets created initially (users expect this
> git convention), some users find it annoying that it gets recreated, especially
> when they would like the git branch names to follow SVN repository branch
> names. More background in
> http://thread.gmane.org/gmane.comp.version-control.git/115030
>
> Make git-svn skip the "master" creation if there is another head ref pointing
> to the same place. This means "master" does get created on initial "clone" but
> does not get recreated once a user deletes it.
>
> Signed-off-by: Marcin Owsiany <marcin@xxxxxxxxxx>
> ---
>  git-svn.perl |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/git-svn.perl b/git-svn.perl
> index 0b074c4..90f3d06 100755
> --- a/git-svn.perl
> +++ b/git-svn.perl
> @@ -1613,6 +1613,8 @@ sub post_fetch_checkout {
>  	}
>  
>  	my $valid_head = verify_ref('HEAD^0');
> +	my @heads_commits = eval { command(qw(show-ref --heads --hash)) };
> +	return if $valid_head and grep { $_ eq $valid_head } @heads_commits;

This is strange.  Much earlier in the code there is this use of
master.

    sub post_fetch_checkout {
            return if $_no_checkout;
            my $gs = $Git::SVN::_head or return;
            return if verify_ref('refs/heads/master^0');

If your goal is to get rid of "master" (because you have a different
branch that serves the role of the primary branch), shouldn't this
code be killed?  Otherwise, if you have a stray "master" that you
are not even using, you would end up skipping checkout for your true
primary branch, no?
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