<wob_jonas> perl -eopen$i,"<",($f="wisdom/aristotle");$_=<$i>; s/, even though.*\\. / without checking. / or die; if (1) { open$o,">",$f; print$o $_ or die; } print substr$_,0;

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