<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".

#!/usr/bin/env python
import sys, os.path, urllib
if len(sys.argv) <= 1:
    print "https://esolangs.org/"
else:
    print ("https://esolangs.org/wiki/" +
        urllib.quote(sys.argv[1]))