[Octave-bug-tracker] [bug #48171] Third output argument of uiputfile undefined when user presses Cancel

[Guillaume]

URL:
  <http://savannah.gnu.org/bugs/?48171>

                 Summary: Third output argument of uiputfile undefined when
user presses Cancel
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Wed 08 Jun 2016 10:27:03 AM GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: Guillaume
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

When the user presses the Cancel button in the uiputfile window, the third
output variable should be 0 but is instead undefined:


>> [retfile,retpath,retidx] = uiputfile
warning: uiputfile: some elements in list of return values are undefined
warning: called from
    uiputfile at line 129 column 1
retfile = 0
retpath = 0
retidx = [](0x0)


A breakpoint in the uiputfile.m function at the line calling
__octave_link_file_dialog__ gives:


debug> [retfile, retpath, retindex] = __octave_link_file_dialog__
(outargs{:})
retfile = 0
retpath = 0
retindex =

error: octave_base_value::print (): wrong type argument '<unknown type>'





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