games: auto-size windows to available screen; dmenu shows Sys menu from any app

src/sxmo-dmenu/dmenu.c

@@ -1649,16 +1649,12 @@ open_builtin_menu(const char *menu_name, int keep_idx)
     if (!cls[0] || strcmp(cls, "sys") == 0) {
       menu_name = "sys";
     } else if (strcmp(cls, "st") == 0 || strncmp(cls, "st-", 3) == 0) {
-      if (strstr(ttl, "nano"))
-        menu_name = "nano";
-      else
-        menu_name = "st";
-    } else {
-      hide_menu();
-      menu_mode = MODE_NONE;
-      snprintf(cmd, sizeof(cmd), "sxmo_appmenu.sh --fallback '%s' '%s'", cls, ttl);
-      spawn_detached_sh(cmd);
-      return;
+      /* launched from a terminal: also show the exact same Sys menu */
+      menu_name = "sys";
+    }
+    else {
+      /* launched from an app: show the exact same Sys menu as the desktop */
+      menu_name = "sys";
     }
   }