On 2021-04-11 at 01:24:57, Chris Jerdonek wrote:
> Hi, I noticed that git-show-ref only seems to permit matching patterns
> from the end of a ref name:
> https://git-scm.com/docs/git-show-ref#Documentation/git-show-ref.txt-ltpatterngt82308203
> For example, "git show-ref master" will include both
> "refs/heads/master" and "refs/remotes/origin/master".
> 
> However, is there a way to limit Git to showing refs starting with a
> prefix, and that doesn't also require Git to iterate over all refs?
> 
> It seems like that would be natural and useful e.g. for repos with
> many refs and/or repos with namespaces. Am I missing something, or
> would that be a useful addition?

I believe you can do this with git for-each-ref.  It accepts prefixes,
and assuming you don't use a case-insensitive comparison, it will
restrict itself to iterating over only those prefixes you specify, not
all refs.
-- 
brian m. carlson (he/him or they/them)
Houston, Texas, US