Apply field-list and admonition handling to classes and unions

CHANGELOG.rst

@@ -18,6 +18,9 @@ Inspired by `Keepachangelog.com <http://keepachangelog.com/>`__.
     `#749 <https://github.com/michaeljones/breathe/pull/749>`__
   - Make ``.. doxygenfunction`` handle function template specializations.
     `#750 <https://github.com/michaeljones/breathe/pull/750>`__
+  - Properly handle field-lists and admonitions in the detailed description of
+    classes and functions.
+    `#764 <https://github.com/michaeljones/breathe/pull/764>`__
 
 - 2021-09-14 - **Breathe v4.31.0**
 

breathe/renderer/sphinxrenderer.py

@@ -860,6 +860,10 @@ def title(self, node) -> List[Node]:
 
     def description(self, node) -> List[Node]:
         brief = self.render_optional(node.briefdescription)
+        detailed = self.detaileddescription(node)
+        return brief + detailed
+
+    def detaileddescription(self, node) -> List[Node]:
         detailedCand = self.render_optional(node.detaileddescription)
         # all field_lists must be at the top-level of the desc_content, so pull them up
         fieldLists = []  # type: List[nodes.field_list]
@@ -934,9 +938,9 @@ def pullup(node, typ, dest):
                 fieldLists = [fl]
 
         if self.app.config.breathe_order_parameters_first:  # type: ignore
-            return brief + detailed + fieldLists + admonitions
+            return detailed + fieldLists + admonitions
         else:
-            return brief + detailed + admonitions + fieldLists
+            return detailed + admonitions + fieldLists
 
     def update_signature(self, signature, obj_type):
         """Update the signature node if necessary, e.g. add qualifiers."""
@@ -1300,7 +1304,7 @@ def addnode(kind, lam):
 
         if "members-only" not in options:
             addnode("briefdescription", lambda: self.render_optional(node.briefdescription))
-            addnode("detaileddescription", lambda: self.render_optional(node.detaileddescription))
+            addnode("detaileddescription", lambda: self.detaileddescription(node))
 
             def render_derivedcompoundref(node):
                 if node is None: