--- a/scripts/set/setdiff.m
+++ b/scripts/set/setdiff.m
@@ -1,18 +1,21 @@
 ## Copyright (C) 2000 Paul Kienzle
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; either version 2 of the License, or
-## (at your option) any later version.
+## This file is part of Octave.
 ##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
+## Octave is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
+##
+## Octave is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
 ##
 ## You should have received a copy of the GNU General Public License
-## along with this program; if not, write to the Free Software
-## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+## along with Octave; see the file COPYING.  If not, write to the Free
+## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+## 02111-1307, USA.
 
 ## -*- texinfo -*-
 ## @deftypefn {Function File} {} setdiff(@var{a}, @var{b})
@@ -24,23 +27,28 @@
 ## @end deftypefn
 ## @seealso{unique, union, intersect, setxor, ismember}
 
-function c = setdiff(a,b)
-  if nargin != 2
-    usage("setdiff(a,b)");
+## Author: Paul Kienzle
+## Adapted-by: jwe
+
+function c = setdiff (a, b)
+
+  if (nargin != 2)
+    usage ("setdiff (a, b)");
   endif
 
-  c = unique(a);
-  if !isempty(c) && !isempty(b)
+  c = unique (a);
+  if (! isempty (c) && ! isempty (b))
     ## form a and b into combined set
-    b = unique(b);
-    [dummy, idx] = sort([ c(:) ; b(:)]);
+    b = unique (b);
+    [dummy, idx] = sort ([c(:); b(:)]);
     ## eliminate those elements of a that are the same as in b
-    n = length(dummy);
-    c(idx(find(dummy(1:n-1) == dummy(2:n)))) = [];
+    n = length (dummy);
+    c(idx(find (dummy(1:n-1) == dummy(2:n)))) = [];
     ## reshape if necessary
-    if ( size(c,1) != 1 && size(b,1) == 1 )
+    if (size (c, 1) != 1 && size (b, 1) == 1)
       c = c.';
     endif
   endif
+
 endfunction
   
\ No newline at end of file