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Re: [PATCH] Unicode Lisp reader escapes

From: Eli Zaretskii
Subject: Re: [PATCH] Unicode Lisp reader escapes
Date: Fri, 05 May 2006 13:39:10 +0300

> From: Aidan Kehoe <address@hidden>
> Date: Thu, 4 May 2006 18:41:17 +0200
> Cc: , address@hidden
>  > I think one relevant question is to what extent the C and Emacs Lisp
>  > string syntax are compatible in the first place.  Emacs Lisp string
>  > syntax was largely based on C string syntax in 1984, but I don't know
>  > how C has developed since 1990.  Can someone report on this question?
> The \u syntax (with a fixed number of digits) came into wide use with Java
> in 1996. The necessity for the \U extension arose with progress towards
> version 3.0 of Unicode and its ~1.1 million available code points. That
> version of the standard was released in 1999; the C99 ISO standard for C of
> the same year included both \u and \U. Various other C-oriented programming
> languages have incorporated the syntax since. 

I think Richard was asking for a simple summary of the current C
string syntax, with special emphasis on the standard escapes.  \u and
\U are only part of the story.

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