it compiles, but throws an error

Makefile

@@ -28,3 +28,7 @@ _examples:
 
 examples:
 	gomake -C _examples
+
+# yes, hardcoded path, yes ugly, yes deal with it
+zparse.go: zparse.rl
+	/home/miekg/svn/ragel/ragel/ragel -Z -G2 -o $@ $<

zparse.rl

@@ -0,0 +1,60 @@
+package main
+
+import (
+    "os"
+    "fmt"
+)
+
+%%{
+        machine z;
+        write data;
+}%%
+
+func zparse(data string) (res int, err os.Error) {
+        cs, p, pe := 0, 0, len(data)
+
+        %%{
+                action out    { fmt.Printf("%s\n", data) }
+                action defTtl { fmt.Printf("%s\n", data) }
+                action setTtl { fmt.Printf("%s\n", data) }
+
+                qtype = ('IN'i|'CS'i|'CH'i|'HS'i|'ANY'i|'NONE'i);
+                ttl = digit+;
+                blank = [ \t]+;
+                qname = any+;
+
+                # RDATA definition
+                rdata_a = any+;
+                rdata_dnskey = any+;
+
+                lhs = qname? blank %defTtl (
+                      (ttl %setTtl blank (qtype blank)?)
+                    | (qtype blank (ttl %setTtl blank)?)
+                )?;
+
+                # RR definitions
+                rhs = (
+                      ('A'i         blank   rdata_a) %out
+                    | ('DNSKEY'i    blank   rdata_dnskey) %out
+                );
+
+                rr = lhs rhs;
+
+                write init;
+                write exec;
+        }%%
+
+        if cs < z_first_final {
+                // No clue what I'm doing what so ever
+                if p == pe {
+                        return 0, os.ErrorString("unexpected eof")
+                } else {
+                        return 0, os.ErrorString(fmt.Sprintf("error at position %d", p))
+                }
+        }
+        return 0 ,nil
+}
+
+func main() {
+
+}