diff mercurial/namespaces.py @ 23775:885c0290f7d5

localrepo: add ignoremissing parameter to branchtip

Previously, in the namespaces api, the only caller of branchtip was singlenode
which happened to raise the same exception that branchtip raised: KeyError.

This is a minor change but will allow upcoming patches to use repo.branchtip to
not raise an exception if a branch doesn't exist. After that, it will be
possible for extensions to use the namespace api in a stable way.

--- a/mercurial/namespaces.py	Mon Dec 15 14:46:04 2014 -0800
+++ b/mercurial/namespaces.py	Thu Oct 16 21:49:28 2014 -0700
@@ -41,7 +41,7 @@
 
         n = ns("branches", "branch",
                lambda repo: repo.branchmap().keys(),
-               lambda repo, name: tolist(repo.branchtip(name)),
+               lambda repo, name: tolist(repo.branchtip(name, True)),
                lambda repo, node: [repo[node].branch()])
         self.addnamespace(n)