diff -r 8c09952cd39a -r 5c4026a289a4 mercurial/help.py
--- a/mercurial/help.py	Mon Mar 23 13:15:57 2009 +0100
+++ b/mercurial/help.py	Mon Mar 23 10:41:42 2009 +0100
@@ -286,6 +286,8 @@
           was committed. Will be empty if the branch name was default.
     - date: Date information. The date when the changeset was committed.
     - desc: String. The text of the changeset description.
+    - diffstat: String. Statistics of changes with the following format:
+          "modified files: +added/-removed lines"
     - files: List of strings. All files modified, added, or removed by
           this changeset.
     - file_adds: List of strings. Files added by this changeset.