B20.1: It takes hitting RET key twice to make select() recognize input from stdin

Kazuhisa Ichikawa ki@home.email.ne.jp
Mon May 31 21:10:00 GMT 1999

Chris Faylor wrote:
> On Sat, May 22, 1999 at 01:24:17PM -0500, Mumit Khan wrote:
> >Kazuhisa Ichikawa <ki@home.email.ne.jp> writes:
> >>
> >> Under cygwin b20.1, select() does not correctly detect input from stdin. That
> >>  is,
> >> if I type a character and hit RET key once, select() returns 0 as the number
> >> of
> >> bits set in the bit masks. If I hit the RET key the second time, select()
> >> correctly returns 1.
> >
> >>
> >> To reproduce the problem, just compile the attached test case and run it as:
> >>
> >>         gcc -g -o select_test.exe select_test.c
> >>         ./select_test.exe
> >
> >I can't reproduce your problem on either NT or Win95. I do see different
> >behaviour if set the tty in CYGWIN variable (before starting bash), but
> >either case select returns 1 as expected. With CYGWIN=tty, I see the
> >same behaviour as on Linux.
> This behavior should be fixed (or at least different) in recent snapshots.
> I rewrote the console handling a month or so ago.

Today I tested the 1999-MAY-19 snapshot and verified that the problem is fixed.

Thank you.


Kazuhisa Ichikawa
Kawasaki Japan

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