Re: "Difficult Characters" draft

Martin J. Duerst (
Mon, 5 May 1997 11:26:34 +0200 (MET DST)

Date: Mon, 5 May 1997 11:26:34 +0200 (MET DST)
From: "Martin J. Duerst" <>
To: "Michael Kung <MKUNG.US.ORACLE.COM>" <>
cc: URI mailing list <>
Subject: Re: "Difficult Characters" draft
In-Reply-To: <>
Message-ID: <Pine.SUN.3.96.970505112325.245x-100000@enoshima>

On 4 May 1997, Michael Kung <MKUNG.US.ORACLE.COM> wrote:

> How about the BIDI support?  Should we allow the BIDI mark?

There are several BIDI marks. Their problem is that they don't
get transcribed well on paper :-(.

> How about 
> non-spacing mark? 

Some nonspacing marks will have to be allowed in some contexts.
An example is the ZWNJ (zero width non-joiner), which is needed
for writing Persian, and which works in this context. Others
have to be examined carefully, but disallowed or strongly
discouraged in most cases.

Regards,	Martin.