Yet Another Yacc

from The Free On-line Dictionary of Computing (8 July 2008)

Yet Another Yacc
Yay

   <tool> (Yay) An extension of {Yacc} with {LALR2} parsing.

   Yay is available from {Bull} as part of the {University of
   Waterloo Tools} package maintained by <[email protected]>.

   (1994-11-09)