mpris module: add player_shortname placeholder for displaying player …

…busname (ultrabug#2120)

py3status/modules/mpris.py

@@ -38,6 +38,7 @@
     {artist} artiste name (first one)
     {length} time duration of the song
     {player} show name of the player
+    {player_shortname} show name of the player from busname (usually command line name)
     {state} playback status of the player
     {time} played time of the song
     {title} name of the song
@@ -136,21 +137,24 @@ def __init__(
         self._id = player_id
         self.parent = parent
         self._name_with_instance = name_with_instance
-        self._player_name = identity
+        self._identity = identity
         self._identity_index = identity_index
         self._name_priority = name_priority
         self._metadata = {}
         self._can = {}
         self._buttons = {}
         self._properties_changed_match = None
         self._state = None
-        self._name = name_from_id
+        self._player_shortname = name_from_id
         self._dPlayer = dPlayer(dbus_interface_info={"dbus_uri": player_id})
-        self._full_name = f"{self._player_name} {self._identity_index}"
-        self._hide_non_canplay = self._name in self.parent.player_hide_non_canplay
+        self._full_name = f"{self._identity} {self._identity_index}"
+        self._hide_non_canplay = (
+            self._player_shortname in self.parent.player_hide_non_canplay
+        )
 
         self._placeholders = {
-            "player": self._player_name,
+            "player": self._identity,
+            "player_shortname": self._player_shortname,
             # for debugging ;p
             "full_name": self._full_name,
         }