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Re: [PATCH] Unicode Lisp reader escapes

From: Juri Linkov
Subject: Re: [PATCH] Unicode Lisp reader escapes
Date: Sat, 06 May 2006 02:15:12 +0300
User-agent: Gnus/5.110004 (No Gnus v0.4) Emacs/22.0.50 (gnu/linux)

>     They are both fixed-length expressions, which is good, because
>     people get into the habit of typing "\u0123As I walked out one
>     evening" instead of the more disastrous "\u123As I walked out one
>     evening".
> I see, you are talking about using them in strings.
> Still, I don't like having both \u and \U--it is ugly.

Are there reasons not to use Perl's notation for Unicode characters,
i.e. "\x{...}"?  The Unicode code for the desired character,
is placed in the braces in hexadecimal, and has no fixed length.
Examples: "\x{DF}", "\x{0448}", "\x{001D0ED}".

I think this notation is well suitable for Emacs, because \x{...}
indicates that a hexadecimal value is expected in the braces.
And in the Unicode branch it will be just another way to specify
a hexadecimal value with a variable length.

Juri Linkov

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