Properly handle noReplies() in nested commands.

This fix prevents the bot from replying 'Error: I tried to send you an empty message'
when 'utilities ignore' is called from an Aka.

plugins/Aka/test.py

@@ -206,6 +206,11 @@ class AkaChannelTestCase(ChannelPluginTestCase):
         self.assertResponse('a+ spam echo egg', 'The operation succeeded.')
         self.assertResponse('spam', 'egg')
 
+    def testIgnore(self):
+        self.assertResponse('aka add test ignore', 'The operation succeeded.')
+        self.assertNoResponse('test')
+
+
 class AkaTestCase(PluginTestCase):
     plugins = ('Aka', 'Alias', 'User', 'Utilities')
 

plugins/Utilities/plugin.py

@@ -49,11 +49,8 @@ class Utilities(callbacks.Plugin):
         Does nothing.  Useful sometimes for sequencing commands when you don't
         care about their non-error return values.
         """
-        if irc.nested:
         msg.tag('ignored')
-            # Need to call NestedCommandsIrcProxy.reply to continue evaluation
-            # of the remaining nested commands.
-            irc.reply('')
+        irc.noReply()
     # Do be careful not to wrap this unless you do any('something').
 
     @internationalizeDocstring

plugins/Utilities/test.py

@@ -37,6 +37,7 @@ class UtilitiesTestCase(PluginTestCase):
     def testIgnore(self):
         self.assertNoResponse('utilities ignore foo bar baz', 1)
         self.assertError('utilities ignore [re m/foo bar]')
+        self.assertResponse('echo [utilities ignore foobar] qux', 'qux')
 
     def testSuccess(self):
         self.assertNotError('success 1')

src/callbacks.py

@@ -498,7 +498,7 @@ class RichReplyMethods(object):
                     msg = self.reply(prefixer(s), **kwargs)
             return msg
 
-    def noReply(self):
+    def noReply(self, msg=None):
         self.repliedTo = True
 
     def _error(self, s, Raise=False, **kwargs):
@@ -1011,6 +1011,16 @@ class NestedCommandsIrcProxy(ReplyIrcProxy):
                 self.args[self.counter] = s
             self.evalArgs()
 
+    def noReply(self, msg=None):
+        if msg is None:
+            msg = self.msg
+        if self.finalEvaled:
+            self.irc.noReply(msg=msg)
+        else:
+            self.args.pop(self.counter)
+            msg.tag('ignored', False)
+            self.evalArgs()
+
     def replies(self, L, prefixer=None, joiner=None,
                 onlyPrefixFirst=False, to=None,
                 oneToOne=None, **kwargs):