void xanadu_cmd_mode(char *source, char *dest, const char *fmt, ...) { va_list args; char buf[BUFSIZE]; *buf = '\0'; if (fmt) { va_start(args, fmt); vsnprintf(buf, BUFSIZE - 1, fmt, args); va_end(args); } ircdproto.ircd_cmd_mode(source, dest, buf); }