--- a/mercurial/changegroup.py Tue Jan 19 14:27:18 2016 -0800
+++ b/mercurial/changegroup.py Tue Jan 19 15:32:32 2016 -0800
@@ -961,6 +961,15 @@
versions.discard('03')
return versions
+def safeversion(repo):
+ # Finds the smallest version that it's safe to assume clients of the repo
+ # will support.
+ versions = supportedversions(repo)
+ if 'generaldelta' in repo.requirements:
+ versions.discard('01')
+ assert versions
+ return min(versions)
+
def getbundler(version, repo, bundlecaps=None):
assert version in supportedversions(repo)
return _packermap[version][0](repo, bundlecaps)