--- a/onsub.py	Tue Mar 27 16:53:23 2012 -0700
+++ b/onsub.py	Thu Mar 29 16:18:57 2012 -0700
@@ -63,6 +63,7 @@
     precmd = None
     postcmd = None
     includeroot = opts.get('root_repo')
+    repotypefilter = opts.get('type')
 
     def execCmd(sub, cmd, kind):
         """if sub == None, cmd is executed inside repo; else, inside sub.
@@ -91,7 +92,7 @@
                               HG_REPO=repo.root,
                               HG_SUBTYPE=kind)
             cmdwd = os.path.join(repo.root, relpath)
-        if cmd != None:
+        if cmd != None and (repotypefilter == '' or repotypefilter == kind):
             if print0:
                 ui.write(relpath, "\0")
             if cmd != '':
@@ -184,7 +185,9 @@
            _('limit recursion to N levels (negative for no limit)'), 'N'),
           ('', 'ignore-errors', None,
            _('continue execution despite errors')),
+          ('t', 'type', '',
+           _('the type of repo to filter'), 'TYPE'),
           ('0', 'print0', None,
            _('end subrepository names with NUL, for use with xargs'))],
-         _('[-b] [-0] [--ignore-errors] CMD [POST-CMD]'))
+         _('[-b] [-0] [-t TYPE] [--ignore-errors] CMD [POST-CMD]'))
 }