--- a/doc/interpreter/contributors.in	Sun Jan 18 10:38:11 2015 -0800
+++ b/doc/interpreter/contributors.in	Mon Jan 19 21:05:39 2015 -0800
@@ -4,6 +4,7 @@
 Adam H. Aitkenhead
 Giles Anderson
 Joel Andersson
+Lachlan Andrew
 Pedro Angelo
 Muthiah Annamalai
 Markus Appel

--- a/libinterp/corefcn/max.cc	Sun Jan 18 10:38:11 2015 -0800
+++ b/libinterp/corefcn/max.cc	Mon Jan 19 21:05:39 2015 -0800
@@ -1016,6 +1016,7 @@
 %!assert (cummin ([1, 4, 2, 3]), [1 1 1 1])
 %!assert (cummin ([1; -10; 5; -2]), [1; -10; -10; -10])
 %!assert (cummin ([4, i; -2, 2]), [4, i; -2, i])
+%!assert (cummin ([1 2; NaN 1], 2), [1 1; NaN 1])
 
 %!test
 %! x = reshape (1:8, [2,2,2]);
@@ -1027,6 +1028,7 @@
 %! assert (ndims (iw), 3);
 %! assert (iw, ones (2,2,2));
 
+
 %!error cummin ()
 %!error cummin (1, 2, 3)
 */
@@ -1070,6 +1072,7 @@
 %!assert (cummax ([1, 4, 2, 3]), [1 4 4 4])
 %!assert (cummax ([1; -10; 5; -2]), [1; 1; 5; 5])
 %!assert (cummax ([4, i 4.9, -2, 2, 3+4i]), [4, 4, 4.9, 4.9, 4.9, 3+4i])
+%!assert (cummax ([1 NaN 0; NaN NaN 1], 2), [1 1 1; NaN NaN 1])
 
 %!test
 %! x = reshape (8:-1:1, [2,2,2]);

--- a/liboctave/operators/mx-inlines.cc	Sun Jan 18 10:38:11 2015 -0800
+++ b/liboctave/operators/mx-inlines.cc	Mon Jan 19 21:05:39 2015 -0800
@@ -939,6 +939,8 @@
             { r[i] = r0[i]; nan = true; } \
           else if (xisnan (r0[i]) || v[i] OP r0[i]) \
             r[i] = v[i]; \
+          else \
+            r[i] = r0[i]; \
         } \
       j++; v += m; r0 = r; r += m; \
     } \
@@ -976,6 +978,8 @@
             { r[i] = r0[i]; ri[i] = r0i[i]; nan = true; } \
           else if (xisnan (r0[i]) || v[i] OP r0[i]) \
             { r[i] = v[i]; ri[i] = j; }\
+          else \
+            { r[i] = r0[i]; ri[i] = r0i[i]; }\
         } \
       j++; v += m; r0 = r; r += m; r0i = ri; ri += m;  \
     } \