If map names are included in the config, use them when generating text for the video thumbnail.

dcc/text.py

@@ -32,6 +32,11 @@ class Text(dcc.doom_base.WadMap):
         return parser
 
     def take_action(self, parsed_args):
+        text = None
+        map_names = self._config["map_names"]
+        if map_names is not None:
+            text = map_names[f"map{parsed_args.map}"]
+        if text is None:
             text = sys.stdin.read().rstrip()
         if not parsed_args.nomap:
             text = "MAP{}: {}".format(parsed_args.map, text)