diff options
Diffstat (limited to 'pre_commit/git.py')
| -rw-r--r-- | pre_commit/git.py | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/pre_commit/git.py b/pre_commit/git.py index 4bf2823..6264529 100644 --- a/pre_commit/git.py +++ b/pre_commit/git.py @@ -155,12 +155,15 @@ def get_all_files() -> List[str]: def get_changed_files(old: str, new: str) -> List[str]: - return zsplit( - cmd_output( - 'git', 'diff', '--name-only', '--no-ext-diff', '-z', - f'{old}...{new}', - )[1], - ) + diff_cmd = ('git', 'diff', '--name-only', '--no-ext-diff', '-z') + try: + _, out, _ = cmd_output(*diff_cmd, f'{old}...{new}') + except CalledProcessError: # pragma: no cover (new git) + # on newer git where old and new do not have a merge base git fails + # so we try a full diff (this is what old git did for us!) + _, out, _ = cmd_output(*diff_cmd, f'{old}..{new}') + + return zsplit(out) def head_rev(remote: str) -> str: |