Support disp/display overloading in classdef * ov-classdef.h (octave_classdef::print, octave_classdef::print_raw): Move definition to C++ file. (octave_classdef::print_as_scalar): Removed method. (octave_classdef::print_name_tag, octave_classdef::print_with_name): New methods. * ov-classdef.cc (octave_classdef::print): Moved from header. (octave_classdef::print_raw): Likewise. Call overloaded disp, if defined and not called from builtin. (octave_classdef::print_name_tag): New method. (octave_classdef::print_with_name): New method, calls overloaded "display" if defined. * pr-output.cc (octave_print_internal(std::ostream, bool): Avoid compilation warning. (Frats, Fdisp, Ffdisp): Allow to call non-const octave_value::print. * ov.h (octave_value::print): Make non-const. * ov-base.h (octave_base_value::print): Likewise. * ov-base.cc (octave_base_value::print): Likewise. * ov-base-diag.h (octave_base_diag::print): Likewise. * ov-base-diag.cc (octave_base_diag::print): Likewise. * ov-base-mat.h (octave_base_matrix::print): Likewise. * ov-base-mat.cc (octave_base_matrix::print): Likewise. * ov-base-scalar.h (octave_base_scalar::print): Likewise. * ov-base-scalar.cc (octave_base_scalar::print): Likewise. * ov-base-sparse.h (octave_base_sparse::print): Likewise. * ov-base-sparse.cc (octave_base_sparse::print): Likewise. * ov-cell.h (octave_cell::print): Likewise. * ov-cell.cc (octave_cell::print): Likewise. * ov-class.h (octave_class::print): Likewise. * ov-class.cc (octave_class::print): Likewise. * ov-colon.h (octave_magic_colon::print): Likewise. * ov-colon.cc (octave_magic_colon::print): Likewise. * ov-fcn-handle.h (octave_fcn_handle::print): Likewise. * ov-fcn-handle.cc (octave_fcn_handle::print): Likewise. * ov-fcn-inline.h (octave_fcn_inline::print): Likewise. * ov-fcn-inline.cc (octave_fcn_inline::print): Likewise. * ov-java.h (octave_java::print): Likewise. * ov-java.cc (octave_java::print): Likewise. * ov-lazy-idx.h (octave_lazy_index::print): Likewise. * ov-oncleanup.h (octave_oncleanup::print): Likewise. * ov-oncleanup.cc (octave_oncleanup::print): Likewise. * ov-perm.h (octave_perm_matrix::print): Likewise. * ov-perm.cc (octave_perm_matrix::print): Likewise. * ov-range.h (octave_range::print): Likewise. * ov-range.cc (octave_range::print): Likewise. * ov-struct.h (octave_struct::print, octave_scalar_struct): Likewise. * ov-struct.cc (octave_struct::print, octave_scalar_struct): Likewise.

--- a/libinterp/corefcn/pr-output.cc	Thu Jan 30 17:56:43 2014 -0800
+++ b/libinterp/corefcn/pr-output.cc	Fri Jan 31 11:41:19 2014 -0500
@@ -3387,8 +3387,7 @@
 }
 
 void
-octave_print_internal (std::ostream&, const octave_value&,
-                       bool pr_as_read_syntax)
+octave_print_internal (std::ostream&, const octave_value&, bool)
 {
   panic_impossible ();
 }
@@ -3439,7 +3438,7 @@
               rat_format = true;
 
               std::ostringstream buf;
-              args(0).print (buf);
+              arg.print (buf);
               std::string s = buf.str ();
 
               std::list<std::string> lst;
@@ -3501,11 +3500,12 @@
 
   if (nargin == 1 && nargout < 2)
     {
+      octave_value arg = args(0);
+
       if (nargout == 0)
-        args(0).print (octave_stdout);
+        arg.print (octave_stdout);
       else
         {
-          octave_value arg = args(0);
           std::ostringstream buf;
           arg.print (buf);
           retval = octave_value (buf.str (), arg.is_dq_string () ? '"' : '\'');
@@ -3550,8 +3550,10 @@
         {
           std::ostream *osp = os.output_stream ();
 
+          octave_value arg = args(1);
+
           if (osp)
-            args(1).print (*osp);
+            arg.print (*osp);
           else
             error ("fdisp: stream FID not open for writing");
         }