Update sphinxify usage

IPython/core/interactiveshell.py

@@ -90,12 +90,17 b' sphinxify: Optional[Callable]'
 try:
     import docrepr.sphinxify as sphx
 
-    def sphinxify(doc):
+    def sphinxify(oinfo):
+        wrapped_docstring = sphx.wrap_main_docstring(oinfo)
+
+        def sphinxify_docstring(docstring):
         with TemporaryDirectory() as dirname:
             return {
-                'text/html': sphx.sphinxify(doc, dirname),
-                'text/plain': doc
+                    'text/html': sphx.sphinxify(wrapped_docstring, dirname),
+                    'text/plain': docstring
             }
+
+        return sphinxify_docstring
 except ImportError:
     sphinxify = None
 
@@ -1621,7 +1626,7 b' class InteractiveShell(SingletonConfigurable):'
         This function is meant to be called by pdef, pdoc & friends.
         """
         info = self._object_find(oname, namespaces)
-        docformat = sphinxify if self.sphinxify_docstring else None
+        docformat = sphinxify(self.object_inspect(oname)) if self.sphinxify_docstring else None
         if info.found:
             pmethod = getattr(self.inspector, meth)
             # TODO: only apply format_screen to the plain/text repr of the mime
@@ -1668,7 +1673,7 b' class InteractiveShell(SingletonConfigurable):'
         with self.builtin_trap:
             info = self._object_find(oname)
             if info.found:
-                docformat = sphinxify if self.sphinxify_docstring else None
+                docformat = sphinxify(self.object_inspect(oname)) if self.sphinxify_docstring else None
                 return self.inspector._get_info(
                     info.obj,
                     oname,