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more formal spec

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Joey Hess 2015-05-14 13:11:18 -04:00
parent b04e589ff3
commit 5fea6dcab2
1 changed files with 13 additions and 4 deletions
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17
doc/todo/unused_by_refspec.mdwn
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@ -17,11 +17,20 @@ departure. Let's allow wildcards as it does, and use leading '+' to add a
ref, and '-' to remove. Let the user specify multiple such expressions, ref, and '-' to remove. Let the user specify multiple such expressions,
separated by ':'. separated by ':'.
+refs/heads/*:-refs/remotes/*:+refs/tags/*:-refs/tags/old-tag +refs/heads/*:+HEAD^:+refs/tags/*:-refs/tags/old-tag
Note that this needs to be processed by taking all refs matching any '+', This is processed by starting with an empty set of refs, and walking the
and then removing any of those that match any '-' refspec in order.
Also, allow use of HEAD, and anything else that `git show-ref` can handle. * Each + is matched against all known refs (from `git show-ref`), and adds
everything it matches to the set. If the + does not contain a wildcard,
it is literally added to the set, rather than looking in the known refs.
This allows "+refs/heads/*" to match all heads, and "+HEAD"
to match HEAD, or even "+sha" to match a given SHA, or "+HEAD^" to match
the previous head.
* Each - is matched against the contents of the set, and removes everything
it matches, using a lexographic matching with wildcards (not looking at
the SHAs that the refs point to, so -refs/heads/master does not remove
+HEAD).
--[[Joey]] --[[Joey]]