Merge branch 'js/stash-in-c-use-builtin-doc'
Doc update.
* js/stash-in-c-use-builtin-doc:
stash: document stash.useBuiltin
diff --git a/Documentation/config/stash.txt b/Documentation/config/stash.txt
index c583d46..7710758 100644
--- a/Documentation/config/stash.txt
+++ b/Documentation/config/stash.txt
@@ -1,3 +1,18 @@
+stash.useBuiltin::
+ Set to `false` to use the legacy shell script implementation of
+ linkgit:git-stash[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 2.22 (and Git for Windows
+version 2.19). 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 shell script version of linkgit:git-stash[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 (see https://git-scm.com/community for details).
+
stash.showPatch::
If this is set to true, the `git stash show` command without an
option will show the stash entry in patch form. Defaults to false.
