On 08/19/2011 10:05 PM, Mark Davis ☕ wrote:
All of the property assignments to PUA characters (except the GC) are purely
informative. The property assignments that are there are simply based on the
likelyhood of property assignment, and can be freely overridden by
implementations.
Glad to hear this.
It is just more likely that PUA characters are bc:L than
that they are bc:ON or bc:R.
Similarly, there are no numeric values for any of the PUA characters: that
doesn't prevent anyone from assigning PUA characters to numbers and giving
them numeric values (and types). Nor is someone prevented from given them
Word_Break properties, etc.
While this is stated in the standard, we should probably also note it in the
UCD annex:http://www.unicode.org/reports/tr44/.
Actually, as I noted in another mail, TUS sec 16.5 should also be more
explicit about this by saying, in the place of:
"default properties which implementations can use"
the following:
"default properties which implementations can use or override if necessary"
If you advise, I can submit this officially in the feedback form so it
finds its way to the editorial board...
--
Shriramana Sharma
