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fix: crash on ambiguous ref 'HEAD' by tusharsadhwani · Pull Request #3425 · pre-commit/pre-commit · GitHub

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fix: crash on ambiguous ref 'HEAD' #3425

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Merged
asottile merged 1 commit into from
Mar 15, 2025
Conversation 1 Commits 1 Checks 0 Files changed
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fix: crash on ambiguous ref 'HEAD' #3425

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2 changes: 1 addition & 1 deletion pre_commit/git.py
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Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@ def get_conflicted_files() -> set[str]:
merge_diff_filenames = zsplit(
cmd_output(
'git', 'diff', '--name-only', '--no-ext-diff', '-z',
'-m', tree_hash, 'HEAD', 'MERGE_HEAD',
'-m', tree_hash, 'HEAD', 'MERGE_HEAD', '--',
)[1],
)
return set(merge_conflict_filenames) | set(merge_diff_filenames)
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9 changes: 9 additions & 0 deletions tests/git_test.py
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Expand Up @@ -141,6 +141,15 @@ def test_get_conflicted_files_unstaged_files(in_merge_conflict):
assert ret == {'conflict_file'}


def test_get_conflicted_files_with_file_named_head(in_merge_conflict):
resolve_conflict()
open('HEAD', 'w').close()
cmd_output('git', 'add', 'HEAD')

ret = set(git.get_conflicted_files())
assert ret == {'conflict_file', 'HEAD'}


MERGE_MSG = b"Merge branch 'foo' into bar\n\nConflicts:\n\tconflict_file\n"
OTHER_MERGE_MSG = MERGE_MSG + b'\tother_conflict_file\n'

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