--- a/scripts/general/circshift.m
+++ b/scripts/general/circshift.m
@@ -55,30 +55,30 @@
       sz = size (x);
 
       if (! isvector (n) && length (n) > nd)
-	error ("circshift: n must be a vector, no longer than the number of dimension in x");
+        error ("circshift: n must be a vector, no longer than the number of dimension in x");
       endif
     
       if (any (n != floor (n)))
-	error ("circshift: all values of n must be integers");
+        error ("circshift: all values of n must be integers");
       endif
 
       idx = cell ();
       for i = 1:length (n);
-	nn = n(i);
-	if (nn < 0)
-	  while (sz(i) <= -nn)
-	    nn = nn + sz(i);
-	  endwhile
-	  idx{i} = [(1-nn):sz(i), 1:-nn];
-	else
-	  while (sz(i) <= nn)
-	    nn = nn - sz(i);
-	  endwhile
-	  idx{i} = [(sz(i)-nn+1):sz(i), 1:(sz(i)-nn)];
-	endif
+        nn = n(i);
+        if (nn < 0)
+          while (sz(i) <= -nn)
+            nn = nn + sz(i);
+          endwhile
+          idx{i} = [(1-nn):sz(i), 1:-nn];
+        else
+          while (sz(i) <= nn)
+            nn = nn - sz(i);
+          endwhile
+          idx{i} = [(sz(i)-nn+1):sz(i), 1:(sz(i)-nn)];
+        endif
       endfor
       for i = (length(n) + 1) : nd
-	idx{i} = 1:sz(i);
+        idx{i} = 1:sz(i);
       endfor
       y = x(idx{:});
     endif