VAR_LOGFILE
{ YDVAR(1, VAR_LOGFILE) }
server_logfile: VAR_LOGFILE STRING_ARG
%token VAR_CHROOT VAR_USERNAME VAR_DIRECTORY VAR_LOGFILE VAR_PIDFILE
| VAR_LOGFILE STRING
%token VAR_LOGFILE
server_logfile: VAR_LOGFILE STRING_ARG
%token VAR_CHROOT VAR_USERNAME VAR_DIRECTORY VAR_LOGFILE VAR_PIDFILE