--- a/contrib/examples/fix.hgrc	Sat Oct 12 15:12:54 2019 -0700
+++ b/contrib/examples/fix.hgrc	Mon Oct 14 12:46:32 2019 -0400
@@ -11,5 +11,5 @@
 # git+https://github.com/python/black/@d9e71a75ccfefa3d9156a64c03313a0d4ad981e5
 # to have the dependencies for grey.
 #
-# black:command = python3.7 contrib/grey.py --quiet --skip-string-normalization -
+# black:command = python3.7 contrib/grey.py --quiet --config=black.toml --skip-string-normalization -
 # black:pattern = set:**.py - hgext/fsmonitor/pywatchman/** - mercurial/thirdparty/** - "contrib/python-zstandard/**"