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bug#10627: char-ready? is broken for multibyte encodings
From: |
Andy Wingo |
Subject: |
bug#10627: char-ready? is broken for multibyte encodings |
Date: |
Mon, 25 Feb 2013 09:55:44 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux) |
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 <address@hidden> 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
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