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Postings from December 2010
I realized as I got further into the design that there were some
unstated things about what I'm proposing. So here is a complete
statement, AFAIK:
Using /a will have the following effects:
1) \s, \d, \w will match only the appropriate ASCII characters
2) [:posix:] will match only (the appropriate) ASCII characters
3) /i of ASCII characters will match only ASCII characters. eg. the
Kelvin sign will not match 'k'
4) /i of non-ASCII characters will obey Unicode semantics, eg, a capital
and lower case Greek beta will match, as will the Angstrom sign and an A
with a circle above.
5) \p{} will match in the full Unicode range, so that \p{Nd} will match
many more characters than the 10 matched by \d.
6) All of the above is true as well on EBCDIC platforms whose native
character set is Latin1. ie. under /a they would behave identically as
an ASCII platform would.
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