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Re: Lisp reader bug

From: Kim F. Storm
Subject: Re: Lisp reader bug
Date: 04 Apr 2003 19:08:22 +0200
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50

Kenichi Handa <address@hidden> writes:

> Emacs of CVS HEAD has a bug in Lisp reader.  For instance,
> (read (format "'%c" (decode-char 'ucs #x102)))
> => (quote )
> I'm not sure, but perhaps this change is the cause.
> 2003-02-18  Kim F. Storm  <address@hidden>
>       * lread.c (read1): Fix last change.
>       "`" is not always special.  Allow "?" after a character constant.
> This change adds codes something like this (total 4 places):
>         || index ("\"';([#?", next_next_char)
> but, it seems that `index' doesn't work well if the second
> arg is greater than 0xFF.  Actually, if I change such lines
> to:
>         || (next_next_char < 0x100 && index ("\"';([#?", next_next_char))
> the bug disappears.
> Kim, could you take a look at this problem?

I'm not aware of that limitation in `index' (it is not documented),
but if that's the case, your fix is appropriate...  Please install it
if not already done.

Kim F. Storm <address@hidden> http://www.cua.dk

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