Changes in tables from Unicode 5.0 to 5.1

Paul Hoffman phoffman at
Wed Mar 19 18:34:49 CET 2008

At 7:15 AM +0100 3/19/08, Patrik Fältström wrote:
>I have checked what changes we will get when we go from Unicode 5.0 
>to 5.1 (given version of 5.1 that existed last Friday on the Unicode 
>1. There is one codepoint that is DISALLOWED in 5.0 and PVALID in 5.1
>In 5.0:
>In 5.1:
>Reason for this is that it changes from being GeneralCategory Sk to 
>General Category Lm. This in turn make the codepoint from not being 
>in any of the categories in IDNA200X to be Category A.

That seems of some concern. This seems to be a character that we 
would not want in IDNA200x. Can people who understand this character 
comment on it? Like, why was the category changed?

>This codepoint because of this would be forced to be added to 
>category G IF this draft had been posted as an RFC:
>    Category G - Backward compatibility

Glad we have that, yes.

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