--- a/scripts/general/shift.m
+++ b/scripts/general/shift.m
@@ -1,15 +1,15 @@
 ## Copyright (C) 1995, 1996  Kurt Hornik
-## 
+##
 ## 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, or (at your option)
 ## any later version.
-## 
+##
 ## 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. 
-## 
+## General Public License for more details.
+##
 ## You should have received a copy of the GNU General Public License
 ## along with this file.  If not, write to the Free Software Foundation,
 ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
@@ -18,7 +18,7 @@
 ## @deftypefn {Function File} {} shift (@var{x}, @var{b})
 ## If @var{x} is a vector, perform a circular shift of length @var{b} of
 ## the elements of @var{x}.
-## 
+##
 ## If @var{x} is a matrix, do the same for each column of @var{x}.
 ## @end deftypefn
 
@@ -27,13 +27,13 @@
 ## Adapted-By: jwe
 
 function y = shift (x, b)
-  
+
   if (nargin != 2)
     error ("usage: shift (X, b)");
   endif
 
   [nr, nc] = size (x);
-  
+
   if (nr == 0 || nc == 0)
     error ("shift: x must not be empty");
   elseif (nr == 1)