allow -o with -E

jtlc

@@ -45,6 +45,8 @@ def main(argv):
                 f = open(tfname, 'r')
                 content = f.read()
                 f.close()
+                if args.output_file is not None:
+                    ofname = args.output_file
                 f = open(ofname, 'w')
                 f.write(content)
                 f.close()