LEX Question

[Tom Stockfisch]

In article <1989Feb15.200741.15963 at utzoo.uucp> henry at utzoo.uucp (Henry Spencer) writes:
[ discussion about using yyin/yyout in lex programs ]

>Be careful:  this is not a documented feature, at least not in all versions
>of lex, and therefore should not be relied on too heavily in portable code.

Have you run across a version of lex that does NOT have yyin/yyout?
I've always thought changing yyin was much more portable than re-defining
input().
-- 

|| Tom Stockfisch, UCSD Chemistry	tps at chem.ucsd.edu