--- a/mercurial/help/config.txt	Sat Jun 25 18:35:14 2016 -0700
+++ b/mercurial/help/config.txt	Sun Jun 26 07:59:02 2016 -0700
@@ -1282,6 +1282,18 @@
    The URL to use for push operations. If not defined, the location
    defined by the path's main entry is used.
 
+``pushrev``
+   A revset defining which revisions to push by default.
+
+   When :hg:`push` is executed without a ``-r`` argument, the revset
+   defined by this sub-option is evaluated to determine what to push.
+
+   For example, a value of ``.`` will push the working directory's
+   revision by default.
+
+   Revsets specifying bookmarks will not result in the bookmark being
+   pushed.
+
 The following special named paths exist:
 
 ``default``