4543 2007-05-06 19:59:49 +0000 [FO] Multiline mode in regular expressions 2007-11-16 09:15:43 +0000 1 1 1 Unclassified XPath / XQuery / XSLT Functions and Operators 1.0 Recommendation PC Windows XP CLOSED FIXED P2 normal --- 1 mike ashok.malhotra public-qt-comments oldest_to_newest 15025 0 mike 2007-05-06 19:59:49 +0000 I previously raised this issue by email (member-only): http://lists.w3.org/Archives/Member/w3c-xsl-query/2006Aug/0020.html http://lists.w3.org/Archives/Member/w3c-xsl-query/2006Aug/0021.html and the minutes of meeting 308 record the following: http://lists.w3.org/Archives/Member/w3c-xml-query-wg/2006Sep/0027.html J5.1 Multiline mode in regular expressions (Michael Kay) http://lists.w3.org/Archives/Member/w3c-xsl-query/2006Aug/0020.html see also: http://lists.w3.org/Archives/Member/w3c-xsl-query/2006Aug/0021.html *Michael will open a bugzilla report and resolve it with the suggested changes. It appears however that this was not recorded as an official action and was therefore not pursued. The problem remains in the spec. Specifically: Consider the expression matches($in, '^.*$', 'm') Intuitively, this returns true if $in contains a zero-length line. I believe that on both Java and .NET, there is not considered to be a zero-length line between a final newline character and the end of the string, so if $in is: "abcd
defg
" the expression will return false. But with our spec, I think there is a zero-length line after the final newline, so this expression will return true. I think that in 7.6.1.1 Flags, under the description of flag "m", we should change ^ matches the start of any line (that is, the start of the entire string, and the position immediately after a newline character) to ^ matches the start of any line (that is, the start of the entire string, and the position immediately after a newline character other than a newline that appears as the last character in the string) and change: "while $ matches the end of any line (that is, the end of the entire string, and the position immediately before a newline character)" to while $ matches the end of any line (that is, the position immediately before a newline character, and the end of the entire string if there is no newline character at the end of the string) 15117 1 mike 2007-05-18 10:43:20 +0000 This change was accepted at the joint meeting 330 on 2007-05-15. The change will be published as Erratum FO.E7.