[Octave-bug-tracker] [bug #50043] Error displaying a class without "display" method

[Colin Macdonald]

URL:
  <http://savannah.gnu.org/bugs/?50043>

                 Summary: Error displaying a class without "display" method
                 Project: GNU Octave
            Submitted by: cbm
            Submitted on: Thu 12 Jan 2017 10:10:35 PM GMT
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Regression
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

jwe, thanks very much for the recent display/disp fixes.  Here is a remaining
minor issue, just so we don't lose track of it.

Suppose I have a class "@me" which has no "@me/display.m"  Then I get:


octave:1> x = me(6);
octave:2> x
error: Invalid call to display.  Correct usage is:

 -- display (OBJ)
octave:2> display(x)
error: display: not defined for class "me"
error: called from
    display at line 57 column 5
octave:2> 


This is contrary to "help display":

     User-defined classes should overload the 'display' method so that
     something useful is printed for a class object.  Otherwise, Octave
     will report only that the object is an instance of its class.





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File Attachments:


-------------------------------------------------------
Date: Thu 12 Jan 2017 10:10:35 PM GMT  Name: me.m  Size: 53B   By: cbm

<http://savannah.gnu.org/bugs/download.php?file_id=39453>

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