--- a/frontends/src/primitivus/chat.py	Mon Jun 27 21:45:11 2016 +0200
+++ b/frontends/src/primitivus/chat.py	Mon Jun 27 21:45:13 2016 +0200
@@ -156,6 +156,10 @@
     def parent(self):
         return self.mess_data.parent
 
+    @property
+    def nick(self):
+        return self.occupant_data.nick
+
     def selectable(self):
         return True
 
@@ -253,6 +257,29 @@
 
         return super(Chat, self).keypress(size, key)
 
+    def completion(self, text, completion_data):
+        """Completion method which complete nicknames in group chat
+
+        for params, see [sat_widgets.AdvancedEdit]
+        """
+        if self.type != C.CHAT_GROUP:
+            return text
+
+        space = text.rfind(" ")
+        start = text[space + 1:]
+        words = [w.nick for w in self.occupants_walker if isinstance(w, OccupantWidget) and w.nick.startswith(start)]
+        if not words:
+            return text
+        try:
+            word_idx = words.index(completion_data['last_word']) + 1
+        except (KeyError, ValueError):
+            word_idx = 0
+        else:
+            if word_idx == len(words):
+                word_idx = 0
+        word = completion_data['last_word'] = words[word_idx]
+        return u"{}{}{}".format(text[:space + 1], word, ': ' if space < 0 else '')
+
     def getMenu(self):
         """Return Menu bar"""
         menu = sat_widgets.Menu(self.host.loop)