From: YANAGAWA Kazuhisa <kjana@...4lab.to>
Date: 2003-06-28T11:47:42+09:00
Subject: Re: exit! affects stdout redirection to a file

In Message-Id: <000a01c33d05$933e4b90$c20ca8c0@gfb>
"Gennady" <gfb@tonesoft.com> writes:

> Somehow, exit! do not only execute at_exit handler and bypasses
> finalizers, but also do not flush the last puts if stdout is
> redirected. Very strange.

Not so since exit! calls _exit() in C level, which is expected to
behave such way.  Namely exit! is prepared for a occasion to exit as
soon as possible, without extra cleaning up.


Note stdio associated with a terminal is set to a line oriented
buffering mode and puts outputs a line.

    > ruby -v
    ruby 1.7.2 (2002-05-07) [i386-freebsd]
    > ruby -e 'puts "abcd"; exit!'
    abcd
    > ruby -e 'print "abcd"; exit!'    
    > ruby -e 'print "abcd\n"; exit!' 
    abcd

That's all.  Tty flushes a buffer when it sees a `\n'.

# tty(4), termios(4) ?


-- 
kjana@dm4lab.to                                  June 28, 2003
It is comparison that makes men happy or miserable.