[comp.sources.d] The origin of yacc

andrew@hammer.UUCP (02/06/87)

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	"It was my impression that there was a public domain yacc which
	was derived from the same source as the AT&T yacc--but not FROM
	the AT&T yacc."

Nope.  Yacc was created from scratch by Steve Johnson at Bell Labs,
back around 1975.  It was not derived from another work.

  -=- Andrew Klossner   (decvax!tektronix!tekecs!andrew)       [UUCP]
                        (tekecs!andrew.tektronix@csnet-relay)  [ARPA]

dclemans@mntgfx.UUCP (02/06/87)

Clones of both yacc and lex were done a while ago; I think that
the primary distribution point of these versions is through
DECUS.  Versions are also available in the "Computer Languages Magazine"
SIG on Compuserve.

There is also a version of awk in the "Computer Languages Magazine"
Compuserve SIG, though this version is much less compatible with a
"standard" awk than are the versions of lex and yacc.

dgc