Re: [PATCH] fetch: don't try to update unfetched tracking refs

[John Keeping <john@keeping.me.uk>]

On Mon, May 27, 2013 at 11:42:52AM -0400, Jeff King wrote:
> On Mon, May 27, 2013 at 12:40:25PM +0100, John Keeping wrote:
> 
> > Since commit f269048 (fetch: opportunistically update tracking refs,
> > 2013-05-11) we update tracking refs opportunistically when fetching
> > remote branches.  However, if a refspec is given on the command line
> > that does not include a configured (non-pattern) refspec a fatal error
> > occurs.
> 
> I'm not sure I understand what the last sentence means. I tried to add a
> test like:
> 
> diff --git a/t/t5510-fetch.sh b/t/t5510-fetch.sh
> index ff43e08..02e30e1 100755
> --- a/t/t5510-fetch.sh
> +++ b/t/t5510-fetch.sh
> @@ -422,6 +422,16 @@ test_expect_success 'configured fetch updates tracking' '
>  	)
>  '
>  
> +test_expect_success 'non-configured ref does not confuse tracking update' '
> +	cd "$D" &&
> +	git update-ref refs/odd/location HEAD &&
> +	(
> +		cd three &&
> +		git fetch origin refs/odd/location &&
> +		git rev-parse --verify FETCH_HEAD
> +	)
> +'
> +
>  test_expect_success 'pushing nonexistent branch by mistake should not segv' '
>  
>  	cd "$D" &&
> 
> but it does not fail with the existing code. Can you give an example
> that fails?

I have this in my .git/config for git.git:

    [remote "origin"]
            url = git://github.com/gitster/git
            fetch = +refs/heads/*:refs/remotes/origin/*
            fetch = +refs/notes/amlog:refs/notes/amlog

Then doing "git fetch origin master" fails because:

    fatal: Couldn't find remote ref refs/notes/amlog

The following test fails for me (and passes with my patch) - note that
in "two", remote.one.fetch is configured as
"refs/heads/master:refs/heads/one".

-- >8 --
diff --git a/t/t5510-fetch.sh b/t/t5510-fetch.sh
index ff43e08..c540257 100755
--- a/t/t5510-fetch.sh
+++ b/t/t5510-fetch.sh
@@ -422,6 +422,19 @@ test_expect_success 'configured fetch updates tracking' '
 	)
 '
 
+test_expect_success 'configured ref does not confuse tracking' '
+
+	cd "$D" &&
+	(
+		cd one &&
+		git branch -f side
+	) &&
+	(
+		cd two &&
+		git fetch one side
+	)
+'
+
 test_expect_success 'pushing nonexistent branch by mistake should not segv' '
 
 	cd "$D" &&