[Octave-bug-tracker] [bug #49695] Invalid FID and fopen(FID)

[Guillaume]

URL:
  <http://savannah.gnu.org/bugs/?49695>

                 Summary: Invalid FID and fopen(FID)
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Thu 24 Nov 2016 11:15:27 AM GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  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:

If FID is an invalid handle, fopen(FID) should return an empty string instead
of throwing an error, for compatibility with Matlab:


> fopen (-1)
error: invalid stream number = -1


vs


>> fopen(-1)
ans =
  0×0 empty char array=


See https://www.mathworks.com/help/matlab/ref/fopen.html#description




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