116
116
revision_b = self.other_branch.last_revision()
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118
self.root, self.ancestors, self.descendants, self.common = \
120
121
except bzrlib.errors.NoCommonRoot:
121
122
raise bzrlib.errors.NoCommonAncestor(revision_a, revision_b)
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124
self.root, self.ancestors, self.descendants = \
127
128
self.n_history = branch.revision_history()