ismember with empty arguments

[Marco Caliari]

Dear maintainers,

I discovered a different behaviour between Octave and Matlab for the 
function ismember when the option 'rows' is given and one of the two 
arguments is empty.
In Matlab:

> > ismember(ones(2),[],'rows')
ans =

     0
     0
> > ismember([],ones(2),'rows')
ans =

   Empty matrix: 0-by-1
> > ismember([],[],'rows')
ans =

   Empty matrix: 0-by-1

Although I don't completely understand this behaviour, I enclosed a patch 
(against 3.2.3) which reproduces it.

Changelog

2009-10-16  Marco Caliari  <address@hidden>

        * ismember.m: Fix behaviour for empty arguments.

Marco

ismember.m.patch
Description: Text Data