RE: NFC Normalization of whitespace+nonspacing combining in XML

• Previous message: Rick McGowan: "Re: Persian or Farsi? (was RE: Decimal separator with more than one c haracter?)"
• Maybe in reply to: Philippe Verdy: "NFC Normalization of whitespace+nonspacing combining in XML"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
• Mail actions: [ respond to this message ] [ mail a new topic ]

Philippe Verdy écrit :
> According to Unicode, CR+ACCUTE is in NFC form, and so
> complies with XML requirement(?) for handling in DOM (where
> all should be performed using NFC). But according to XML (or
> HTML) the parsed document must then be converted
> (interpreted) as if it was SPACE+COMBINING ACCUTE ACCENT
> which is not NFC.

It is NFC.

> If canonicalizing the document, it will become a single NON
> COMBINING ACCUTE ACCENT...

From the UCD:

00B4;ACUTE ACCENT;Sk;0;ON;<compat> 0020 0301;;;;N;SPACING ACUTE;;;;

This is only a <compat> decomposition, so SPACE+COMBINING ACCUTE ACCENT
remains unchanged in NFC.

A more interesting case is that of U+0338 COMBINING LONG SOLIDUS OVERLAY,
which combines with > to give U+226F NOT GREATER-THAN. This can damage XML
files.

-- 
François Yergeau

• Next message: Kenneth Whistler: "More of The Unicode Standard, Version 4.0 available online"
• Previous message: Rick McGowan: "Re: Persian or Farsi? (was RE: Decimal separator with more than one c haracter?)"
• Maybe in reply to: Philippe Verdy: "NFC Normalization of whitespace+nonspacing combining in XML"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
• Mail actions: [ respond to this message ] [ mail a new topic ]

This archive was generated by hypermail 2.1.5 : Wed May 21 2003 - 15:45:08 EDT