I belive IBM use inversion lists in thier ICU library for sets of unicode characters.
Graham. On Sat, Jan 19, 2002 at 07:08:25PM +0200, Jarkko Hietaniemi wrote: > Honour where honour is due: I've got some questions about inversion > lists. Where I saw them mentioned by that name were some drafts of > this: > > http://www.aw.com/catalog/academic/product/1,4096,0201700522,00.html > > The book looks really promising-- unfortunately it's not yet published. > > -- > $jhi++; # http://www.iki.fi/jhi/ > # There is this special biologist word we use for 'stable'. > # It is 'dead'. -- Jack Cohen