Rob:
I rewrote cat to use just read and write, as
nature intended. I don't recall if my version is in any of v8 v9 v10 ...
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It is. It was /bin/cat when I arrived at Murray Hill in 1984.
I remember being delighted with the elegant way to get rid of
a flag I had never really liked either.
I never knew Dennis had dragged his heels at it. It was (to me)
so obviously the right answer that I never asked!
Norman Wilson
Toronto ON