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Billy Keyes
03daf96518
When processing mail-formatted patches, the default cleanup removed all leading content in square brackets, but this pattern is often used to identify tickets or other information that should remain in the commit title. Git supports disabling this the the `-k` and `-b` flags, which we simulate with the new SubjectCleanMode options. Use WithSubjectCleanMode(SubjectCleanPatchOnly) to only remove bracketed strings that contain "PATCH", keeping others that are (probably) part of the actual commit message. Note that because of the mail parsing library, we cannot replicate the `-k` flag exactly and always clean leading and trailing whitespace.