--- a/mercurial/help/config.txt Mon Feb 04 18:14:03 2019 +0300
+++ b/mercurial/help/config.txt Mon Feb 04 20:35:21 2019 +0300
@@ -857,6 +857,16 @@
Enabled by default.
+``sparse-revlog``
+ Enable or disable the ``sparse-revlog`` delta strategy. This format improves
+ delta re-use inside revlog. For very branchy repositories, it results in a
+ smaller store. For repositories with many revisions, it also helps
+ performance (by using shortened delta chains.)
+
+ Repositories with this on-disk format require Mercurial version 4.7
+
+ Enabled by default.
+
``graph``
---------