Fix issue with parent selector evaluation

Fixes #2291

Author: mgreter

src/eval.cpp

@@ -1748,8 +1748,8 @@ namespace Sass {
     result_str = unquote(Util::rtrim(result_str)) + "\n{";
     Parser p = Parser::from_c_str(result_str.c_str(), ctx, s->pstate());
     p.last_media_block = s->media_block();
-    Selector_List_Obj sl = p.parse_selector_list(exp.block_stack.back()->is_root());
-    if (s->has_parent_ref()) sl->remove_parent_selectors();
+    bool root = exp.block_stack.back()->is_root();
+    Selector_List_Obj sl = p.parse_selector_list(root);
     return operator()(&sl);
   }
 

src/expand.cpp

@@ -636,7 +636,11 @@ namespace Sass {
       // convert selector schema to a selector list
       else if (Selector_Schema_Obj schema = SASS_MEMORY_CAST(Selector_Schema, s)) {
         if (schema->has_real_parent_ref()) {
+          // put root block on stack again (ignore parents)
+          // selector schema must not connect in eval!
+          block_stack.push_back(block_stack.at(1));
           sl = eval(&schema);
+          block_stack.pop_back();
         } else {
           selector_stack.push_back(0);
           sl = eval(&schema);