Subject: Re: ash & POSIX 1003.2 q's
To: Garrett Wollman <firstname.lastname@example.org>
From: Paul DuBois <email@example.com>
Date: 01/27/1997 11:23:37
Garrett Wollman writes:
> > I'm a little disappointed that pdksh doesn't use something
> > like yacc, but perhaps there is a good reason (the tables get too big?
> > suboptimal generated parsers?)
> Tom Duff once noted that the grammar given in the AT&T sh(1) man page
> did not allow even such simple commands as `who | wc'. He then went
> on to say, ``[There is] an even darker secret: nobody really knows
> what the Bourne shell's grammar is.'' (Sorry, I can't find the
> reference for this right now.
It's on the last page of Duff's paper on the rc shell (Rc - A Shell
for Plan 9 and UNIX Systems).
Home page: http://www.primate.wisc.edu/people/dubois