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Re: PTYs in LISP

Why bother?  Since you're running on the 20, wouldn't the SUBFORK package
do what you needed?

MacLisp i/o seems to be somewhat wedged in that you cannot do input and
output through the same file object (as far as I know.)  This means that
you can't open a random access file for "update", i.e. read followed by
write.  Perhaps the same lossage is responsible for your PTY difficulties.