On page 125 of Unicode 3.0, rule 4 says
No overlapping sets. [snip] A later character set definition will override a
previous one, removing its characters from the previous set.
In the Line Boundaries section a large number of sets are defined on pages
129-130. Unfortunately the last set to be defined is
All All Unicode characters
Surely by strict interpretation of rule 4 this sucks all the characters out
of the previous sets? I know what you mean, but you don't mean what you say.
P.S. This significantly increases the efficiency of implementations - line
breaks can occur before and after every character :-)
-- Tim Partridge. Anyopinions expressed are mine only and not those of my employer
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