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Re:I reverse engineered Google Docs to play back any documen... by gokhan on Saturday December 26, 2020 @03:11PM (#25546096)
SVN called it blame, before git. There might be other predecessors.
Re:I reverse engineered Google Docs to play back any documen... by contingencies on Saturday December 26, 2020 @05:30PM (#25546942)
Apparently CVS had it, probably but not certainly before SVN https://linux.die.net/man/1/cvs