[Octave-bug-tracker] [bug #34259] Compatibility: save with empty variable names

[Guillaume]

URL:
  <http://savannah.gnu.org/bugs/?34259>

                 Summary: Compatibility: save with empty variable names
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Fri 09 Sep 2011 17:00:40 GMT
                Category: None
                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: GNU/Linux

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Details:

There is a small difference in behaviour between Octave and MATLAB when using
'save' with empty variable names or non-existing variables:

In MATLAB:

>> clear 
>> a = 1;
>> save('file.mat','a','b')
Error using save
Variable 'b' not found.
>> save('file.mat','a','')
>>


In Octave:

octave> clear
octave> a = 1;
octave> save('file.mat','a','b')
warning: save: no such variable `b'
octave> save('file.mat','a','')
warning: save: no such variable `'
octave>


I.e. Octave returns a warning while MATLAB returns an error for unknown
variables.
Furthermore MATLAB ignores silently an empty variable name while Octave issues
a warning.

I would advocate for a silent execution for the latter as it would allow the
following:

opt = '-mat'; % or '' for no option
save('file.mat','a',opt);





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