lots o fixes

examples/fibi.m

@@ -0,0 +1,24 @@
+fib := fn(n) {
+   if (n < 3) {
+     return 1
+   }
+   a := 1
+   b := 1
+   c := 0
+   i := 0
+   while (i < n - 2) {
+     c = a + b
+     b = a
+     a = c
+     i = i + 1
+   }
+   return a
+}
+
+N := 35
+
+if (len(args()) > 0) {
+  N = int(args()[0])
+}
+
+println(fib(N))