Replaced Joystick:saveGamepadMapping with love.joystick.saveGamepadMappings, which saves all gamepad mappings from both recently-used joysticks and recently-modified mappings. saveGamepadMappings returns a string of newline-separated mappings and takes an optional filename argument which writes it to a file.

src/modules/joystick/wrap_JoystickModule.h

@@ -37,7 +37,7 @@ int w_getJoystickCount(lua_State *L);
 int w_setGamepadMapping(lua_State *L);
 int w_getGamepadMapping(lua_State *L);
 int w_loadGamepadMappings(lua_State *L);
-int w_saveGamepadMapping(lua_State *L);
+int w_saveGamepadMappings(lua_State *L);
 extern "C" LOVE_EXPORT int luaopen_love_joystick(lua_State *L);
 
 } // joystick