while loops can now be used as expressions -- they return an array containing the computed result of each iteration.

test/fixtures/execution/test_while.coffee

@@ -0,0 +1,17 @@
+i: 100
+while i -= 1
+
+print(i is 0)
+
+
+i: 5
+list: while i -= 1
+  i * 2
+
+print(list.join(' ') is "8 6 4 2")
+
+
+i: 5
+list: (i * 3 while i -= 1)
+
+print(list.join(' ') is "12 9 6 3")