]> Le quintidi 5 brumaire, an CCXII, Richard Jones a 'ecrit: > # List.iter (printf "\t%s\n") ["foo"; "bar"; "baz"; "buz"];; This is a FAQ: you can not partially apply the format string of printf-like functions. Try (fun x -> printf "\t%s\n" x) instead. And please note that 'buz' has never been reported as a metasyntactic variable :)