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<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".
author | HackEso <hackeso@esolangs.org> |
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date | Wed, 08 Apr 2020 20:27:14 +0000 |
parents | c989a1669243 |
children |
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#!/usr/bin/perl -w #By Ørjan Johansen, 2009-2012. This file is in the public domain. $| = 1; my $l = 0; $_ = join '', <>; while ($l < 512) { if (s!^([^/\\]+)!! or s!^\\(.)!!s) { $l += length($1); print($1); } else { if (s!^/((?:[^/\\]|\\.)*)/((?:[^/\\]|\\.)*)/!!s) { my ($s,$d) = ($1,$2); $s =~ s/\\(.)/$1/gs; $d =~ s/\\(.)/$1/gs; while (s/(?:\Q$s\E)/$d/) { } } else { last; } } }