Ambiguousness in regex

Hi,

According to the spec (Part 2: Datatypes), '.' in character class can be
reduced to both XmlChar[21] and MultiCharEsc[37]. 

I think it need to be noted that '.' in character class must be reduced to
XmlChar.

Thanks.

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Satoshi Nakamura <snakamura@infoteria.co.jp>
Infoteria Corporation