On Mon, Dec 30, 2013 at 04:56:18PM +0100, Ludovic Courtès wrote: A simple way to find about unbound variables like this is to run ‘make clean-go && make’ via Emacs M-x compile and to iterate over the warnings. Thanks. I didn't know about that. J' -- PGP Public key ID: 1024D/2DE827B3 fingerprint = 8797 A26D 0854 2EAB 0285 A290 8A67 719C 2DE8 27B3 See http://sks-keyservers.net or any PGP keyserver for public key.