Date: Fri, 19 Jun 2020 18:00:11 +0100
From: Patrick Welche <prlw1%cam.ac.uk@localhost>
Message-ID: <20200619170011.GA21933@quantz>
| ltsleep(9) doesn't mention it as return value.
It does mention EWOULDBLOCK, and EWOULDBLOCK is just EAGAIN with
a different name.
kre