<b_jonas> learn ayacc is ais523\'s yacc parser generator implementation, get it from (darcs clone http://nethack4.org/projects/ayacc) or a snapshot from "http://nethack4.org/pastebin/ayacc-2020-04.tar.gz".

#!/bin/sh
echo "$@" | sed 's/\\n/\n/g' | gcc -w -Wfatal-errors -std=c11 -O2 -x c - -o /tmp/a.out && /tmp/a.out