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

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Marcin Owsiany <marcin@xxxxxxxxxx> writes:

> PTAL:
>
> From: Marcin Owsiany <marcin@xxxxxxxxxx>
> Date: Sun, 24 Jun 2012 22:40:05 +0100
> Subject: [PATCH] git-svn: don't create master if another head exists
>
> git-svn insists on creating the "master" head (unless it exists) on every
> "fetch". It is useful that it gets created initially, when no head exists
> - users expect this git convention of having a "master" branch on initial
> clone.
>
> However creating it when there already is another head does not provide any
> value - the ref is never updated, so it just gets stale after a while.  Also,
> 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 HEAD already points at a valid head.
> This means "master" does get created on initial "clone" but does not get
> recreated once a user deletes it.
>
> Also, make post_fetch_checkout work with any head that is pointed to by HEAD,
> not just "master".
>
> Also, use fatal error handling consistent with the rest of the program for
> post_fetch_checkout.
>
> Signed-off-by: Marcin Owsiany <marcin@xxxxxxxxxx>
> ---
>  git-svn.perl |    9 ++++-----
>  1 files changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/git-svn.perl b/git-svn.perl
> index 0b074c4..6673d21 100755
> --- a/git-svn.perl
> +++ b/git-svn.perl
> @@ -367,9 +367,9 @@ Git::SVN::init_vars();
>  eval {
>  	Git::SVN::verify_remotes_sanity();
>  	$cmd{$cmd}->[0]->(@ARGV);
> +	post_fetch_checkout();
>  };
>  fatal $@ if $@;
> -post_fetch_checkout();
>  exit 0;
>  
>  ####################### primary functions ######################
> @@ -1598,8 +1598,8 @@ sub rebase_cmd {
>  
>  sub post_fetch_checkout {
>  	return if $_no_checkout;
> +	return if verify_ref('HEAD^0');
>  	my $gs = $Git::SVN::_head or return;
> -	return if verify_ref('refs/heads/master^0');
>  
>  	# look for "trunk" ref if it exists
>  	my $remote = Git::SVN::read_all_remotes()->{$gs->{repo_id}};
> @@ -1612,9 +1612,8 @@ sub post_fetch_checkout {
>  		}
>  	}
>  
> -	my $valid_head = verify_ref('HEAD^0');
> -	command_noisy(qw(update-ref refs/heads/master), $gs->refname);
> -	return if ($valid_head || !verify_ref('HEAD^0'));
> +	command_noisy(qw(update-ref HEAD), $gs->refname);
> +	return unless verify_ref('HEAD^0');
>  
>  	return if $ENV{GIT_DIR} !~ m#^(?:.*/)?\.git$#;
>  	my $index = $ENV{GIT_INDEX_FILE} || "$ENV{GIT_DIR}/index";

I am happy with this version, as long as Eric is happy ;-)

Thanks.
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