[PATCH 5 of 7] context: warn when .ancestor picks an arbitrary of multiple common ancestors
Mads Kiilerich
mads at kiilerich.com
Mon Feb 24 16:19:14 CST 2014
# HG changeset patch
# User Mads Kiilerich <madski at unity3d.com>
# Date 1393278134 -3600
# Mon Feb 24 22:42:14 2014 +0100
# Node ID d6e2126534dce3cc4dea26c5e869f72a44353a47
# Parent 2d32ff9a384a604e70b0caeb5da345b5d69b8d50
context: warn when .ancestor picks an arbitrary of multiple common ancestors
diff --git a/mercurial/context.py b/mercurial/context.py
--- a/mercurial/context.py
+++ b/mercurial/context.py
@@ -396,14 +396,21 @@
def ancestor(self, c2):
"""
- return the ancestor context of self and c2
+ return an ancestor context of self and c2
"""
# deal with workingctxs
n2 = c2._node
if n2 is None:
n2 = c2._parents[0]._node
- n = self._repo.changelog.ancestor(self._node, n2)
- return changectx(self._repo, n)
+ ancs = set(self._repo.changelog.commonancestors(self._node, n2))
+ if not ancs:
+ return changectx(self._repo, nullid)
+ if len(ancs) > 1:
+ self._repo.ui.warn(
+ _("warning: multiple ancestors of %s and %s: %s\n") %
+ (short(self._node), short(n2),
+ ' '.join(short(n) for n in sorted(ancs))))
+ return changectx(self._repo, min(ancs))
def descendant(self, other):
"""True if other is descendant of this changeset"""
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