[Octave-bug-tracker] [bug #43580] Dellistener example not working

[Pantxo Diribarne]

URL:
  <http://savannah.gnu.org/bugs/?43580>

                 Summary: Dellistener example not working
                 Project: GNU Octave
            Submitted by: pantxo
            Submitted on: mar. 11 nov. 2014 17:38:08 GMT
                Category: None
                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: GNU/Linux

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Details:

The example that is provided in the help string of "dellistener" function
leads to an error:


function my_listener (h, dummy, p1)
  fprintf ("my_listener called with p1=%s\n", p1);
endfunction

c = address@hidden, "my string"};
addlistener (gcf, "position", c);
dellistener (gcf, "position", c);

=> octave_base_value::convert_to_str_internal (): wrong type argument
'function handle'


Concequently, there is currently no way to delete a specific listener.

I suppose this example have once worked (before 3.8 at least) so I am marking
it as regression.




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