Re: [PATCH] refs: remove lookup cache for reference-transaction hook

[Jeff King <peff@peff.net>]

On Fri, Aug 21, 2020 at 09:42:45AM -0700, Junio C Hamano wrote:

> Jeff King <peff@peff.net> writes:
> 
> > However, I wondered...
> >
> >> +test_perf "nonatomic push" '
> >> +	git push ./target-repo.git branch-{1..1000} &&
> >> +	git push --delete ./target-repo.git branch-{1..1000}
> >> +'
> 
> Is this a bash-and-ksh-only test?  At least, the above would not try
> to push 1000 branches with the version of dash I have.

Heh, I was so focused on the "push" part of it that I didn't even look
carefully at the second half of the command-line. ;)

I think pushing "refs/heads/branch-*" would work for pushing. For
deletion, though, I don't think we allow wildcards in the refspecs.
You could abuse pruning:

  git push --prune ../dst.git refs/heads/does-not-exist/*:refs/heads/*

It also may be OK to just omit that half of the test. I think the
initial push exercises the case we care about. Though I guess we do run
the test repeatedly, so we might have to do:

  rm -rf dst.git &&
  git init dst.git &&
  git push dst.git refs/heads/branch-*

-Peff