Re: EWOULDBLOCK and EINPROGRESS in process.c

[Paul Eggert]

Eli Zaretskii wrote:

> Can someone tell why we need that "#else" there?

The EWOULDBLOCK code is there because Kim Storm heard a rumor that some oddball 
nonblocking 'connect' implementations returned EWOULDBLOCK.  Please see:

https://lists.gnu.org/archive/html/emacs-devel/2002-02/msg00718.html

I also vaguely recall stories that some old Unix platforms did that.  The most 
recent reference I found in a quick Google search was UnixWare 7 Release 7.1.4 
(April 2004):

http://uw714doc.sco.com/en/SDK_netapi/sockC.nonBlockSocks.html

If that documentation is right, the current Emacs code wouldn't work on UnixWare 
7.1.4, not that we care.