isstruct for classdef objects should not return true. * ov.h (octave_value::is_classdef_object): New method. * ov-base.h (octave_base_value::is_classdef_object): Likewise. * ov-classdef.h (octave_classdef::is_classdef_object): Likewise. (octave_classdef::is_map): Return false. * variables.cc (generate_struct_completions): Do auto-completion for classdef objects too.

--- a/libinterp/corefcn/variables.cc
+++ b/libinterp/corefcn/variables.cc
@@ -283,7 +283,8 @@
 
           frame.run ();
 
-          if (tmp.is_defined () && (tmp.is_map () || tmp.is_java ()))
+          if (tmp.is_defined () &&
+              (tmp.is_map () || tmp.is_java () || tmp.is_classdef_object ()))
             names = tmp.map_keys ();
         }
     }