This page is part of the web mail archives of SRFI 115 from before July 7th, 2015. The new archives for SRFI 115 contain all messages, not just those from before July 7th, 2015.
Alex Shinn scripsit:
Looks good to me.
> As a special case, the pre-defined named character sets
> upper and lower (and their aliases upper-case and lower-case)
> are defined to match all characters with the cased property (L&).
> Note also all other pre-defined named character sets are
> equivalent to themselves under w/nocase.
> Rationale: The differences between the case insensitive
> lower and upper and the cased property are few and unlikely
> to match user intention. Moreover, unlike the algorithmically
> mapped upper and lower char-sets, the cased property is
> readily available in most Unicode implementations.
I think this language should also be added:
Note that placing a sequence consisting of a base character
and combining characters into a character string representing
a character set will not do what the user probably expects;
it will create a character set pattern containing the base
character and the combining character(s) as alternatives.
For the same reason, it is inadvisable to apply Unicode
normalization to such strings.