>The 'Is' prefix can be used on any property in 5.12 for which there is >no naming conflict. The only naming conflicts are certain of the block >properties, such as Arabic. IsArabic means the Arabic script. InArabic >means the base Arabic block. Personally, I find Is and In unintuitive, >and prefer to write sc=arabic or blk=arabic instead.
I agree. >When Unicode proposed to add some properties in 5.2 that started with >'Is', there was significant enough protest that they backed off, and >promised never to do it again, adding a stability policy to 6.0 to that >effect. Apparently a number of languages use 'Is' as a prefix. Yes, that's right. Even worse, there are languages that are very very bad about "Is" vs "In", giving the wrong sense to them. --tom
