- From: Michael Kay <mhk@mhk.me.uk>
- Date: Tue, 17 Feb 2004 15:20:42 -0000
- To: "'Michael Rys'" <mrys@microsoft.com>, <public-qt-comments@w3.org>
> > "The default collation applies to all functions that require > a collation, except the following functions: fn:contains, > fn:starts-with, fn:ends-with, fn:substring-before, and > fn:substring-after. If one of these functions is called > without an explicit collation parameter, it uses the Unicode > codepoint collation rather than the default > collation.": Why are these functions treated differently. We > think that this is more confusing than helpful and request to > not special-case them and have them take the default > collation as well. > For the record, we debated this point at some length, and had input from the I18N group on the topic. The reasons were a combination of usability, efficiency, implementability, and backwards compatibility. Not all collations support substring matching; and where they do, they can give very strange results that can only be understood by users who appreciate the subtleties of Unicode normalization and decomposition. Also, it brings these functions into line with the regex functions such as matches, which do not use collations. Michael Kay
Received on Tuesday, 17 February 2004 10:20:01 UTC