WM: empty menu so addons can extend the splash

release/scripts/startup/bl_ui/space_userpref.py

@@ -120,6 +120,14 @@ class USERPREF_MT_splash(Menu):
         row.menu("USERPREF_MT_appconfigs", text="Preset")
 
 
+# only for addons
+class USERPREF_MT_splash_footer(Menu):
+    bl_label = ""
+
+    def draw(self, context):
+        pass
+
+
 class USERPREF_PT_interface(Panel):
     bl_space_type = 'USER_PREFERENCES'
     bl_label = "Interface"

source/blender/windowmanager/intern/wm_operators.c

@@ -2028,6 +2028,14 @@ static uiBlock *wm_block_create_splash(bContext *C, ARegion *ar, void *UNUSED(ar
 	uiItemO(col, NULL, ICON_RECOVER_LAST, "WM_OT_recover_last_session");
 	uiItemL(col, "", ICON_NONE);
 	
+	mt = WM_menutype_find("USERPREF_MT_splash_footer", false);
+	if (mt) {
+		Menu menu = {NULL};
+		menu.layout = uiLayoutColumn(layout, false);
+		menu.type = mt;
+		mt->draw(C, &menu);
+	}
+
 	UI_block_bounds_set_centered(block, 0);
 	
 	return block;