From: Peter Kirk (peterkirk@qaya.org)
Date: Thu Apr 29 2004 - 18:06:12 EDT
On 29/04/2004 11:27, Language Analysis Systems, Inc. Unicode list reader 
wrote:
> I should probably just let this go, but I'm going to weigh in on the 
> PUA issue one more time.  Mailing-list and Usenet discussions tend to 
> be unfocused by their very nature, so any attempt by me to focus this 
> discussion is probably doomed to failure, but I'm going to try 
> anyway.  If nothing else, maybe clarifying my thoughts on this will 
> provide text I can incorporate into the next edition of my book, if it 
> goes to another edition.
>  
> ...
>  
> 1 and 2 are the solutions Unicode can mostly do, but they're both 
> problematic and I don't think they solve all the problems.  6 and 7 
> are the solutions that are available now without any OS or application 
> vendors having to do a thing.  They're ugly, but it we're talking 
> mostly about stuff that's destined to find its way into Unicode 
> someday, why won't they work as interim solutions, and why isn't the 
> energy currently being put into solutions 1 and 2 better put into 
> actually standardizing these characters?  4 seems desirable, but hard 
> to pull off without a lot of market strength (although there might be 
> enough of a market to make 5 feasible).  And 3 seems like a bad idea 
> all around.
>  
> I'd like to see the yelling stop and see people focus on the actual 
> needs and on realistic solutions insted of just complaining about how 
> the UTC isn't fair.  And to the degree that the problem isn't really 
> with Unicode at all (which is mostly), I'd like to see that discussion 
> happen somewhere else.
>  
> --Rich Gillam
>   Language Analysis Systems, Inc.
>  
Thank you, Rich, for your useful contribution.
I don't see the real problem with your solution 2, or for that matter 
your solution 1 given that very likely no one is yet using the whole of 
the existing PUA. Personally, I am not asking for two whole planes, just 
a small area. It is only CJK which needs whole planes, and for that it 
seems the existing PUA is adequate.
As for 4, I can see that there is at least a possibility of getting 
support for something like Graphite into a reasonable range of 
applications, and also a possibility of getting support for definition 
of PUA character properties into Graphite (which is open source).
6 unfortunately does not provide suitable mechanisms for all the 
relevant Unicode properties. For example, there are no controls to force 
a PUA character to be default ignorable, or to make it into a combining 
character with a defined combining class. Maybe some such controls can 
be added, although I am not sure how much can be done without 
destabilising important things like normalisation, and this would 
certainly help to resolve the issues.
-- Peter Kirk peter@qaya.org (personal) peterkirk@qaya.org (work) http://www.qaya.org/
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