re #566: fix emit regression in top level container anchors

changelog/current.md

@@ -7,6 +7,7 @@
   - The emit implementation logic was refactored, and is now significantly cleaner
   - Emitted YAML will now have anchors emitted before tags, as is customary ([see example](https://play.yaml.io/main/parser?input=LSAhdGFnICZhbmNob3IgfAogIG5vdGUgaG93IHRoZSBhbmNob3IgY29tZXMKICBmaXJzdCBpbiB0aGUgZXZlbnRz)).
   - Added `ParserOptions` defaulted argument to temp-parser overloads of `parse_{yaml,json}_in_{place,arena}()`
+  - [PR#567](https://github.com/biojppm/rapidyaml/pull/567) (fixes [#566](https://github.com/biojppm/rapidyaml/issues/566)) fixes a regression from this refactor where top-level container anchors were wrongly emitted in the same line if no style was set on the container.
 
 
 ### API changes

src/c4/yml/emit.def.hpp

@@ -314,7 +314,7 @@ void Emitter<Writer>::_top_open_entry(id_type node)
         else
         {
             _RYML_ASSERT_VISIT_(m_tree->callbacks(), ty.is_container(), m_tree, node);
-            if(ty.is_block())
+            if(!ty.is_flow())
                 _pend_newl();
         }
     }