Re: Syntax

Stephane Bortzmeyer <> Sun, 07 January 2007 20:57 UTC

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Date: Sun, 7 Jan 2007 21:52:55 +0100
From: Stephane Bortzmeyer <>
To: Julian Reschke <>
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Subject: Re: Syntax
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On Sun, Jan 07, 2007 at 06:12:09PM +0100,
 Julian Reschke <> wrote 
 a message of 31 lines which said:

> 1) Although the language is designed to be used in IDs and RFCs,
> restricting it to ASCII here is IMHO a very bad idea. After all, you
> may want to use it for other specifications, and the IETF may lift
> the current restrictions at some point of time. I would suggest to
> require a specific text encoding such as UTF-8,

Any idea about the support of UTF-8 in typical languages *and* parsing
tools? For instance, with C and Yacc, I assume it is quite
difficult. With Haskell, I'm not sure :-)

The problem of UTF-8 is that many assumptions no longer hold:

* case insensitivity becomes a problem,
* enumeration of "reasonable" characters become a complex task.

I'm a big fan of internationalization and Unicode but, since Cosmogol
is intended for a technical and limited use, is it reasonable? 

Anyway, I recorded the point as a TODO (we do not have a formal issue
tracker) in the draft source. Other advices?

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