[Octave-bug-tracker] [bug #48725] Octave deblank cannot accept empty result

[Ken Tsui]

URL:
  <http://savannah.gnu.org/bugs/?48725>

                 Summary: Octave deblank cannot accept empty result
                 Project: GNU Octave
            Submitted by: kentsui
            Submitted on: Tue 09 Aug 2016 02:26:23 AM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: KT
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.3
        Operating System: Microsoft Windows

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Details:

If an empty array is inputted into the deblank function, it will return
"deblank: S argument must be a string or cellstring" while Matlab will return
back the empty array.

*Example of the error:*

>> deblank([])
error: deblank: S argument must be a string or cellstring
error: called from
    deblank at line 73 column 5



*Proposal:*
Modify "C:\Octave\Octave-4.0.3\share\octave\4.0.3\m\strings\deblank.m" as
follows.


...
  elseif (isempty(s)) %KT - Added
    s=s; %KT - Added
  else
    error ("deblank: S argument must be a string or cellstring");
  endif






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