The Unicode Technical Committee has posted a new issue for public review and comment. Details are on the following web page: http://www.unicode.org/review/pri179/
Review periods for the new items close on May 2, 2011.
Please see the page for links to discussion and relevant documents. Briefly, the new issue is:
PRI #179: Changes to Unicode Regular Expression Guidelines
The Unicode Consortium is considering changes to UTS #18 Unicode Regular Expressions (http://www.unicode.org/reports/tr18/
). These proposed changes have arisen in connection with questions about case-insensitive and canonical-equivalent matching.
The proposed changes eliminate some requirements on implementations of Unicode Regular Expressions which have proven to be problematic in implementations, and add clarifications. The consortium is soliciting feedback on these changes.
If you have comments for official UTC consideration, please post them by submitting your comments through our feedback & reporting page: http://www.unicode.org/reporting.html
If you wish to discuss issues on the Unicode mail list, then please
use the following link to subscribe (if necessary). Please be aware
that discussion comments on the Unicode mail list are not automatically
recorded as input to the UTC. You must use the reporting link above
to generate comments for UTC consideration. http://www.unicode.org/consortium/distlist.html