bar_items: Make the encrypted room sign configurable.

matrix/bar_items.py

@@ -101,7 +101,9 @@ def matrix_bar_item_buffer_modes(data, item, window, buffer, extra_info):
             modes = []
 
             if room.encrypted:
-                modes.append("🔐")
+                modes.append(
+                    G.CONFIG.look.encrypted_room_sign
+                )
 
             if (server.client
                     and server.client.room_contains_unverified(room.room_id)):

matrix/config.py

@@ -464,6 +464,18 @@ class MatrixConfig(WeechatConfig):
                  " (note: content is evaluated, see /help eval)"),
                 eval_cast,
             ),
+            Option(
+                "encrypted_room_sign",
+                "string",
+                "",
+                0,
+                0,
+                "🔐",
+                ("A sign that is used to show that the current room is "
+                 "encrypted "
+                 "(note: content is evaluated, see /help eval)"),
+                eval_cast,
+            ),
             Option(
                 "pygments_style",
                 "string",