From: Andy Wingo <wingo@pobox.com>
To: Mark H Weaver <mhw@netris.org>
Cc: 10627@debbugs.gnu.org
Subject: bug#10627: char-ready? is broken for multibyte encodings
Date: Mon, 25 Feb 2013 09:55:44 +0100 [thread overview]
Message-ID: <87ehg493hr.fsf@pobox.com> (raw)
In-Reply-To: <87a9qt6yux.fsf@tines.lan> (Mark H. Weaver's message of "Sun, 24 Feb 2013 19:06:30 -0500")
Hi Mark,
Are you proposing that `char-ready?' do a nonblocking read if
the buffer is empty? That could work.
On Mon 25 Feb 2013 01:06, Mark H Weaver <mhw@netris.org> writes:
> However, is seems to me that implementing this in terms of read-byte and
> unget-byte is simpler, because it avoids duplication of the logic
> regarding putback buffers and refilling of buffers.
Could work, if the port is nonblocking to begin with.
> I agree that 'char-ready?' is an antiquated interface, but it is
> nonetheless part of the R5RS (and Guile since approximately forever),
> and it is the only way to do a non-blocking read in portable R5RS. It
> seems to me that we ought to try to implement it as well as we can, no?
Do what you like to do :) But if it were my time, I would simply
document that it checks for a byte and not a character and move on.
Andy
--
http://wingolog.org/
next prev parent reply other threads:[~2013-02-25 8:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-28 10:21 bug#10627: char-ready? is broken for multibyte encodings Mark H Weaver
2013-02-24 19:11 ` Andy Wingo
2013-02-24 20:14 ` Mark H Weaver
2013-02-24 22:15 ` Andy Wingo
2013-02-25 0:06 ` Mark H Weaver
2013-02-25 1:23 ` Daniel Hartwig
2013-02-25 8:55 ` Andy Wingo [this message]
2013-02-26 19:50 ` Mark H Weaver
2013-02-26 19:59 ` Andy Wingo
2016-06-20 19:23 ` Andy Wingo
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