Match Unicode characters to Unicode character ranges.
an R object which can be coerced to a
an R object coercible to a
the value to be returned (after coercion to integer) in the case when no match is found.
u_char_match returns a vector of the positions of the (first)
matches of the Unicode characters given by
x (after coercion
as.u_char) to the Unicode character ranges given by
table (after coercion via
%uin% returns a logical vector indicating if there was a
match or not.
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