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I18N-ISSUE-145: text-transform: full-width explanation [CSS3-text-prep]

From: Internationalization Core Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Fri, 16 Dec 2011 10:08:11 +0000
To: public-i18n-core@w3.org
Message-Id: <E1RbUi3-0002ZB-QT@tibor.w3.org>

I18N-ISSUE-145: text-transform: full-width explanation [CSS3-text-prep]


Raised by: Richard Ishida
On product: CSS3-text-prep

2.1. Transforming Text: the ‘text-transform’ property

"The definition of fullwidth and halfwidth forms can be found on the Unicode consortium web site at [UAX11]. The mapping to fullwidth form is defined by taking code points with the <wide> or the <narrow> tag in their Decomposition_Mapping in [UAX44]. For the <narrow> tag, the mapping is from the code point to the decomposition (minus <narrow> tag), and for the <wide> tag, the mapping is from the decomposition (minus the <wide> tag) back to the original code point."

I don't understand this. If you map to decomposition mappings the characters are no longer full-width, right? How can your example abbr:lang(ja) { text-transform: full-width;  convert the ASCII characters in abbreviations in Japanese to their fullwidth variants so that they lay out and line break like ideographs?
Received on Friday, 16 December 2011 10:10:18 UTC

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