+rebase.useBuiltin::
+ Set to `false` to use the legacy shellscript implementation of
+ linkgit:git-rebase[1]. Is `true` by default, which means use
+ the built-in rewrite of it in C.
++
+The C rewrite is first included with Git version 2.20. This option
+serves an an escape hatch to re-enable the legacy version in case any
+bugs are found in the rewrite. This option and the shellscript version
+of linkgit:git-rebase[1] will be removed in some future release.
++
+If you find some reason to set this option to `false` other than
+one-off testing you should report the behavior difference as a bug in
+git.
+
rebase.stat::
Whether to show a diffstat of what changed upstream since the last
rebase. False by default.