Bug 165332 - Better error messages when joining a channel fails.

r=samuel@sieb.net

extensions/irc/xul/content/handlers.js

@@ -606,6 +606,15 @@ function my_unknown (e)
 {
     e.params.shift(); /* remove the code */
     e.params.shift(); /* and the dest. nick (always me) */
+    
+    // Handle random IRC numerics automatically.
+    var msg = getMsg("msg.err.irc." + e.code, null, "");
+    if (msg)
+    {
+        this.display(msg);
+        return;
+    }
+    
         /* if it looks like some kind of "end of foo" code, and we don't
          * already have a mapping for it, make one up */
     var length = e.params.length;

extensions/irc/xul/locale/en-US/chatzilla.properties

@@ -447,6 +447,12 @@ msg.err.no.match      = No match for ``%S''
 msg.err.no.socket     = Error creating socket
 msg.err.exhausted     = Connection attempts exhausted, giving up.
 
+# Better IRC error messages
+msg.err.irc.471 = This channel has reached it's set capacity; you connot join it.
+msg.err.irc.473 = This channel is invite-only. You must have an invite from an existing member of the channel to join.
+msg.err.irc.474 = You are banned from this channel.
+msg.err.irc.475 = This channel needs a key. You must provide the correct key to join the channel. See "/help join" for details on joining a channel with a key.
+
 msg.warn.unk.command    = Unknown command ``%S'', just guessing.
 
 msg.val.on  = on