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Diff for /src/usr.bin/yacc/yacc.1 between version 1.22 and 1.23

version 1.22, 2009/02/10 19:24:17 version 1.23, 2010/07/20 12:53:43
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 be written to the file  be written to the file
 .Pa y.output .  .Pa y.output .
 .El  .El
   .Pp
   .Ex -std yacc
 .Sh ENVIRONMENT  .Sh ENVIRONMENT
 .Bl -tag -width TMPDIR  .Bl -tag -width TMPDIR
 .It Ev TMPDIR  .It Ev TMPDIR
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 The flags  The flags
 .Op Fl or  .Op Fl or
 are extensions to that specification.  are extensions to that specification.
   .Sh HISTORY
   Berkeley Yacc was originally developed using PCC on a VAX with the
   intent of being as compatible as possible with AT&T Yacc.
   Much is owed to the unflagging efforts of Keith Bostic.
   His badgering kept me working on Yacc long after I was ready to
   quit.
   .Pp
   Berkeley Yacc is based on the excellent algorithm for computing
   LALR(1) lookaheads developed by Tom Pennello and Frank DeRemer.
   The algorithm is described in their almost impenetrable article in
   TOPLAS 4,4.
   .Pp
   Finally, much credit must go to those who pointed out deficiencies
   of earlier releases.
   Among the most prolific contributors were
   Benson I. Margulies,
   Dave Gentzel,
   Antoine Verheijen,
   Peter S. Housel,
   Dale Smith,
   Ozan Yigit,
   John Campbell,
   Bill Sommerfeld,
   Paul Hilfinger,
   Gary Bridgewater,
   Dave Bakken,
   Dan Lanciani,
   Richard Sargent,
   and
   Parag Patel.
   .Sh AUTHORS
   The
   .Nm
   utility was written by
   .An Robert Corbett .
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Removed from v.1.22  
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  Added in v.1.23