bug#18420: 24.3; interaction with external process hangs emacs

[Stephen Leake]

Eli Zaretskii <eliz@gnu.org> writes:

> No, sit-for also reads from subprocesses, because it calls 'pselect',
> which listens to subprocesses as well.  What's more important, it
> acknowledges the "read ready" signal sent by the reader thread, and
> releases it from its wait.

Ok; the doc string only uses the word "input", while
accept-process-input doc string explicitly talks about "subprocess
input", so I had the impression they were handled separately. I'll
submit a separate documentation bug on this.

-- 
-- Stephe