I18N-ISSUE-242: Clarify case-insensitive match for domains [ITS-20] from Internationalization Working Group Issue Tracker on 2013-01-19 (www-international@w3.org from January to March 2013)

From: Internationalization Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Sat, 19 Jan 2013 05:48:27 +0000
To: public-multilingualweb-lt-comments@w3.org,www-international@w3.org
Message-Id: <E1TwRI3-0002uD-AZ@tibor.w3.org>

I18N-ISSUE-242: Clarify case-insensitive match for domains [ITS-20]

http://www.w3.org/International/track/issues/242

Raised by: Norbert Lindenberg
On product: ITS-20

http://www.w3.org/TR/2012/WD-its20-20121206/#domain

Steps 3-1-2-5 and 3-2-5 of the algorithm for interpreting values in the Domain data category state "the mapping is case-insensitive".

First, is case-insensitive matching really necessary here? In discussions of other technologies, e.g. CSS, we found that it's hard to get case-insensitive matching right, i.e. make it work so that it doesn't have surprising/confusing results in some languages, while strict string equality is easy to understand.

Second, if it is really necessary, then the precise meaning of "case-insensitive" matching has to be specified. Unicode case-folding using the C and F mappings of the Unicode data file CaseFolding.txt is our normal recommendation.

Received on Saturday, 19 January 2013 05:48:28 UTC