diff -r e632a2429982 -r 49c583ca48c4 mercurial/commands.py
--- a/mercurial/commands.py	Sun May 10 06:48:08 2015 -0700
+++ b/mercurial/commands.py	Sun Apr 12 23:51:06 2015 -0700
@@ -2056,7 +2056,8 @@
 
 @command('debugdata',
     [('c', 'changelog', False, _('open changelog')),
-     ('m', 'manifest', False, _('open manifest'))],
+     ('m', 'manifest', False, _('open manifest')),
+     ('', 'dir', False, _('open directory manifest'))],
     _('-c|-m|FILE REV'))
 def debugdata(ui, repo, file_, rev=None, **opts):
     """dump the contents of a data file revision"""
@@ -2227,6 +2228,7 @@
 @command('debugindex',
     [('c', 'changelog', False, _('open changelog')),
      ('m', 'manifest', False, _('open manifest')),
+     ('', 'dir', False, _('open directory manifest')),
      ('f', 'format', 0, _('revlog format'), _('FORMAT'))],
     _('[-f FORMAT] -c|-m|FILE'),
     optionalrepo=True)
@@ -2729,6 +2731,7 @@
 @command('debugrevlog',
     [('c', 'changelog', False, _('open changelog')),
      ('m', 'manifest', False, _('open manifest')),
+     ('', 'dir', False, _('open directory manifest')),
      ('d', 'dump', False, _('dump index data'))],
     _('-c|-m|FILE'),
     optionalrepo=True)