Given the following input file f.5c int f(int x) { and invoking Nickle as "nickle f.5c", Nickle fails (as it obviously should) but with the mystic error message /usr/share/nickle/builtin.5c:106: syntax error before "" Looks like we need to make the argument parser (now in Nickle, IIRC) handle bad Nickle parser states more gracefully? Bart