Documentation / diff-heuristic-options.txton commit config.mak.uname: set NO_REGEX=NeedsStartEnd on AIX (0e6d899)
   1--indent-heuristic::
   2--no-indent-heuristic::
   3        These are to help debugging and tuning experimental heuristics
   4        (which are off by default) that shift diff hunk boundaries to
   5        make patches easier to read.