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Warn about base vs head relationship #12

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Warn about base vs head relationship #12

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4 changes: 4 additions & 0 deletions git_explode/exploder.py
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,10 @@ def __init__(self, repo, base, head, debug, context_lines):
self.base_commit = GitUtils.ref_commit(repo, base)
self.logger.debug("base commit %s is %s" %
(base, GitUtils.commit_summary(self.base_commit)))
head_commit = GitUtils.ref_commit(repo, head)
merge_base_id = repo.merge_base(self.base_commit.id, head_commit.id)
if not merge_base_id or merge_base_id != self.base_commit.id:
self.logger.warn("Base commit not ancestor of head, cherry-picks may fail")
self.head = head
self.context_lines = context_lines
self.topic_mgr = TopicManager('topic%d', self.logger)
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