--- a/mercurial/ancestor.py Fri Nov 14 11:33:52 2014 -0800
+++ b/mercurial/ancestor.py Fri Nov 14 13:47:25 2014 -0800
@@ -148,13 +148,13 @@
revsvisit = set(revs)
basesvisit = set(bases)
- if not revsvisit:
- return []
if not basesvisit:
basesvisit.add(nullrev)
- start = max(max(revsvisit), max(basesvisit))
bothvisit = revsvisit.intersection(basesvisit)
revsvisit.difference_update(bothvisit)
+ if not revsvisit:
+ return []
+ start = max(max(revsvisit), max(basesvisit))
# At this point, we hold the invariants that:
# - revsvisit is the set of nodes we know are an ancestor of at least one
# of the nodes in revs