Index: twisted/words/test/test_irc.py
===================================================================
--- twisted/words/test/test_irc.py	(revision 38290)
+++ twisted/words/test/test_irc.py	(working copy)
@@ -2001,6 +2001,23 @@
         return transport.value().split('\r\n')[-2]
 
 
+    def test_channelList(self):
+        """
+        L{IRCClient.channel_list} sends LIST command to the server
+        """
+        self.protocol.channelList() #for getting list of all the channels from the server
+        self.protocol.channelList("#foo") # specifying channel name
+        self.protocol.channelList("#foo,#bar", "server") #specifying channel name and target both
+
+        expected = ["LIST", 
+                    "LIST #foo", 
+                    "LIST #foo,#bar server", 
+                    '']
+
+        self.assertEqual(self.transport.value().split('\r\n'), 
+                                                       expected)
+
+
     def test_away(self):
         """
         L{IRCClient.away} sends an AWAY command with the specified message.
Index: twisted/words/protocols/irc.py
===================================================================
--- twisted/words/protocols/irc.py	(revision 38290)
+++ twisted/words/protocols/irc.py	(working copy)
@@ -1338,7 +1338,30 @@
         """
         self.nickname = nick
 
+        
+    def channelListStart(self, listStart):
+        """
+        Called when there is a chance of getting channel list from the server in next few lines of response
+        @type listStart: C{str}
+        """
 
+    
+    def gotChannelList(self, channel, usersCount, topic):
+        """
+        Called when we get one channel list from the server 
+        @type channel: C{str}
+        @type usersCount: C{int}
+        @type topic: C{str}
+        """
+
+
+    def channelListEnd(self, endOfList):
+        """
+        Called when channel list ends.
+        @type endOfList: C[{str}]
+        """
+
+
     ### Things I observe other people doing in a channel.
 
     def userJoined(self, user, channel):
@@ -1703,6 +1726,26 @@
         """
         self.sendLine("QUIT :%s" % message)
 
+    
+    def channelList(self, channel=None, target=None):
+        """
+        The list command is used to list channels and their topics.  
+        @type channel: C{str}, str is a comma separated list of channels like "#foo,#bar"
+        @param channel: If the channel parameter is used, only the status of those channels is displayed.
+
+        @type target: C{str}
+        @param target: If the target parameter is specified, the request is forwarded to that server which will generate the reply.
+        
+        """
+        if channel and target:
+            self.sendLine("LIST %s %s" % (channel, target) )
+        elif channel:
+            channel = channel.replace(' ', '') #replacing any spaces in the channel-names
+            self.sendLine("LIST %s" % (channel,))
+        else:
+            self.sendLine("LIST")
+    
+
     ### user input commands, client->client
 
     def describe(self, channel, action):
@@ -2073,6 +2116,31 @@
     def irc_RPL_LUSERME(self, prefix, params):
         self.luserMe(params[1])
 
+
+    def irc_RPL_LISTSTART(self, prefix, params):
+        """
+        Called when we get an intimation from the server, that it's about to send RPL_LIST
+        """
+        del params[0]
+        firstLine = "\t".join(params)
+        self.channelListStart(firstLine) 
+
+
+    def irc_RPL_LIST(self, prefix, params):
+        """
+        Called when we get LIST of channels from the server, output of LIST Command
+        """
+        self.gotChannelList(params[1], int(params[2]), params[3] )
+
+
+    def irc_RPL_LISTEND(self, prefix, params):
+        """
+        Called when output of /LIST ends
+        """
+        del params[0]
+        self.channelListEnd(params)
+
+
     def irc_unknown(self, prefix, command, params):
         pass
 
Index: twisted/words/topfiles/4929.feature
===================================================================
--- twisted/words/topfiles/4929.feature	(revision 0)
+++ twisted/words/topfiles/4929.feature	(working copy)
@@ -0,0 +1 @@
+twisted.words.protocols.irc.IRCClient provides a function for LIST command
\ No newline at end of file