On Fri, 12 Jul 2019, Clem Cole wrote:

[ VMS "pipes" ]

> If I recall this was one of the implementations that wrote to a file and 
> then forked the next process after it got to eof.    

That's my recollection too.

Trivia: I was speaking to Max at a DECUS conference, and he admitted that 
they had a Unix licence and were studying the code very carefully; not 
soon after, VMS became POSIX-compliant :-)

-- Dave