fix for crash showing tooltip for NODE_OT_add_search()

release/scripts/startup/bl_operators/node.py

@@ -57,10 +57,10 @@ def node_group_items(tree_type):
 def node_type_items_cb(self, context):
     snode = context.space_data
     if not snode:
-        return []
+        return ()
     tree = snode.edit_tree
     if not tree:
-        return []
+        return ()
 
     # Lists of basic node types for each
     if not node_type_items_dict:
@@ -76,7 +76,7 @@ def node_type_items_cb(self, context):
     if tree.type in node_type_items_dict:
         return node_type_items_dict[tree.type] + node_group_items(tree.type)
     else:
-        return []
+        return ()
 
 
 class NODE_OT_add_search(Operator):

source/blender/editors/interface/interface_intern.h

@@ -176,7 +176,7 @@ struct uiBut {
 
 	struct bContextStore *context;
 
-	/* not ysed yet, was used in 2.4x for ui_draw_pulldown_round & friends */
+	/* not used yet, was used in 2.4x for ui_draw_pulldown_round & friends */
 #if 0
 	void (*embossfunc)(int, int, float, float, float, float, float, int);
 	void (*sliderfunc)(int, float, float, float, float, float, float, int);

source/blender/editors/interface/interface_regions.c

@@ -573,6 +573,9 @@ ARegion *ui_tooltip_create(bContext *C, ARegion *butregion, uiBut *but)
 		char *str;
 		opptr = uiButGetOperatorPtrRNA(but); /* allocated when needed, the button owns it */
 
+		/* so the context is passed to itemf functions (some py itemf functions use it) */
+		WM_operator_properties_sanitize(opptr, FALSE);
+
 		str = WM_operator_pystring(C, but->optype, opptr, 0);
 
 		/* operator info */