--- a/scripts/statistics/distributions/nbinpdf.m	Fri Apr 23 11:13:48 2010 -0700
+++ b/scripts/statistics/distributions/nbinpdf.m	Fri Apr 23 11:28:50 2010 -0700
@@ -46,20 +46,20 @@
   pdf = zeros (size (x));
 
   k = find (isnan (x) | (n < 1) | (n == Inf) | (n != round (n))
-	    | (p < 0) | (p > 1));
+            | (p < 0) | (p > 1));
   if (any (k))
     pdf(k) = NaN;
   endif
 
   ## Just for the fun of it ...
   k = find ((x == Inf) & (n > 0) & (n < Inf) & (n == round (n))
-	    & (p == 0));
+            & (p == 0));
   if (any (k))
     pdf(k) = 1;
   endif
 
   k = find ((x >= 0) & (x < Inf) & (x == round (x)) & (n > 0)
-	    & (n < Inf) & (n == round (n)) & (p > 0) & (p <= 1));
+            & (n < Inf) & (n == round (n)) & (p > 0) & (p <= 1));
   if (any (k))
     if (isscalar (n) && isscalar (p))
       pdf(k) = bincoeff (-n, x(k)) .* (p ^ n) .* ((p - 1) .^ x(k));