--- a/plugin.py	Thu Nov 22 17:17:23 2018 +0800
+++ b/plugin.py	Thu Nov 22 17:47:07 2018 +0800
@@ -160,10 +160,7 @@
             irc.reply('no match found')
     glossary = wrap(glossary, ['text'])
 
-    def differential(self, irc, msg, args, phabrev, gotURL=False):
-        """<revision id>
-
-        Returns URL, description and status of revisions on differential."""
+    def _differential(self, irc, phabrev, gotURL=False):
         baseurl = self.registryValue('phaburl')
         url = '{}/D{}'.format(baseurl.rstrip('/'), phabrev)
         page = utils.web.getUrl(url).decode('utf-8')
@@ -182,6 +179,12 @@
 
         item = 'Revision {} {}, {}'.format(url, status, desc)
         irc.reply(item)
+
+    def differential(self, irc, msg, args, phabrev):
+        """<revision id>
+
+        Returns URL, description and status of revisions on differential."""
+        self._differential(irc, phabrev)
     differential = wrap(differential, ['phabrev'])
 
     def snarfDifferential(self, irc, msg, match):
@@ -191,7 +194,7 @@
             return
 
         phabrev = match.group('phabrev')
-        self.differential(self, irc, msg, msg.args, phabrev)
+        self._differential(irc, phabrev)
 
     @urlSnarfer
     def snarfDifferentialURL(self, irc, msg, match):
@@ -205,6 +208,6 @@
             return
 
         phabrev = match.group('phabrev')
-        self.differential(self, irc, msg, msg.args, phabrev, gotURL=True)
+        self._differential(irc, phabrev, gotURL=True)
 
 Class = Mercurial