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O'REILLY PUBLISHES COMPLETELY REVISED GUIDE TO LEX AND YACC 

SEBASTOPOL, CA -- O'Reilly & Associates announces the release of a 
completely revised guide to two important UNIX programming tools, 
lex and yacc.  For the second edition of LEX & YACC, authors Tony 
Mason and Doug Brown are joined by John Levine, moderator of the 
comp.compilers newsgroup on the Internet.  Nearly twice the size 
of the original, the second edition contains new and revised tutorial 
and reference sections.  The new materials should provide more help 
for new users in learning lex and yacc  as well as for seasoned 
programmers who need to understand some of the complexities of these 
programming tools.


     "I've finished reading the second edition of lex & yacc...
     [T]he book is much stronger than the first edition, well-
     written and thorough.  I had the pleasant surprise numerous 
     times of reading some passage, thinking to myself, 'Oh, they've 
     missed this perhaps subtle point, make a note,' and then the 
     next sentence or paragraph would cover exactly that point...
     I'm glad I'll finally have a good book to recommend to folks."
                                             --Vern Paxson 
                                               Developer of flex


          When LEX & YACC was first published in May 1990, CommUNIXations 
magazine noted that it covered topics, "usually left out of introductory 
and intermediate UNIX or C courses but [which] can enhance the 
productivity of any programmer who needs to talk to CRT screens or write 
applications programs that are user friendly." In the new edition, the 
authors have provided new, extended examples that show the variety of 
applications for lex and yacc.

          Major changes include:
 
          *  Lex and yacc each have a chapter devoted to understanding 
             basic usage and simple, stand-alone applications;

          *  A new chapter with full SQL grammar; 

          *  Greatly expanded reference chapters;

          *  Coverage of the new POSIX 1003.2 standard versions of lex 
             and yacc;

          *  Full coverage of all major MS-DOS and UNIX versions of lex 
             and yacc, including AT&T lex and yacc, Berkeley yacc, 
             Berkeley/Gnu flex, Gnu bison, MKS Lex and Yacc, and Abraxas 
             PCYACC.

          LEX & YACC, 2nd edition, continues to be the only book exclusively
devoted to these two important UNIX programming tools.  Every chapter from
the first edition has been wholly revised, with new, expanded examples
replacing old ones.  

     LEX & YACC 
     by John R. Levine, Tony Mason, and Doug Brown
     400 pages
     ISBN 1-56592-00-7
     Price:  $29.95

This and other O'Reilly Books are available through bookstores or directly
from the publisher.  For a list of our overseas distributors or US
bookstores, FAX (707/829-0104), phone (707/829-0515 or 800/998-9938 in US
or Canada) or write O'Reilly & Assoicates, 103 Morris St., Sebastopol, CA,
95472, USA. 
-- 
Brian Erwin, brian@ora.com
Public Relations, O'Reilly & Associates
103A Morris Street, Sebastopol CA 95472
707-829-0515, Fax 707-829-0104