Re: Require guidance on Unicode in IETF formats

Stephane Bortzmeyer <bortzmeyer@nic.fr> Wed, 21 March 2007 09:32 UTC

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Date: Wed, 21 Mar 2007 10:31:42 +0100
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Michael Richardson <mcr@sandelman.ca>
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Subject: Re: Require guidance on Unicode in IETF formats
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On Tue, Mar 20, 2007 at 06:11:11PM +0100,
 Michael Richardson <mcr@sandelman.ca> wrote 
 a message of 16 lines which said:

> Given that ASCII and Latin-1 is a proper subset of Unicode, I don't
> understand how permitting Unicode makes tools for writing SMDL
> harder.

Because Unicode is a superset of ASCII. So, if you develop with
ASCII-only tools, they may not be able to process all Cosmogol files,
only those written in pure ASCII.
 
> For me, I'm thinking that this is mostly text editors, and some gui
> tools that would mostly *export* a SMDL.  i.e. that we work mostly
> in latex-style.

No, the typical Cosmogol tools are not editors (Cosmogol is, by
design, a text-based language, so you can use any editor), they are
checkers, translators, etc. Same as with ABNF.

> Is that really that much harder?   

I suggested that people post here "implementation reports" of parsers
for Unicode-based language, together with code examples. So far, we
received mostly "It should work" reports :-)

> Was it simply the "case-insensitive" nature of things that threw a
> wrench in things?

Cosmogol is case-sensitive.



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