--- a/mercurial/help/patterns.txt	Fri Jan 17 23:55:11 2014 +0900
+++ b/mercurial/help/patterns.txt	Fri Jan 17 23:55:11 2014 +0900
@@ -29,6 +29,11 @@
 feeds. Each string read from the file is itself treated as a file
 pattern.
 
+All patterns, except for ``glob:`` specified in command line (not for
+``-I`` or ``-X`` options) or ``.hgignore`` file, can match also
+against directories: files under matched directories are treated as
+matched.
+
 Plain examples::
 
   path:foo/bar   a name bar in a directory named foo in the root