Documentation/config/rerere.txt

   1 rerere.autoUpdate::
   2         When set to true, `git-rerere` updates the index with the
   3         resulting contents after it cleanly resolves conflicts using
   4         previously recorded resolutions.  Defaults to false.
   5
   6 rerere.enabled::
   7         Activate recording of resolved conflicts, so that identical
   8         conflict hunks can be resolved automatically, should they be
   9         encountered again.  By default, linkgit:git-rerere[1] is
  10         enabled if there is an `rr-cache` directory under the
  11         `$GIT_DIR`, e.g. if "rerere" was previously used in the
  12         repository.