<wob_jonas> perl -eopen$i,"<",($f="wisdom/aristotle");$_=<$i>; s/(fifth) kind of vitreous/$1/ or die; if (1) { open$o,">",$f; print$o $_ or die; } print substr$_,200;

ayacc is ais523's yacc parser generator implementation, get it from darcs clone http://nethack4.org/projects/ayacc