Re: [icu-design] ICU API proposal: new class for UTS #46 (IDNA2008)

[Markus S. <mar...@gm...>]

I would like to make another change in the proposed API:

a) Rename the IDNAErrors class to IDNAInfo

b) Add UBool IDNAInfo.hasDeviationCharacters() const;

After processing, this will return TRUE if the Unicode form of the input
label or domain name contains one or more deviation
characters<http://www.unicode.org/draft/reports/tr46/tr46.html#Deviations>
.
With nontransitional processing, such characters are copied to the
destination string.
With transitional processing, such characters are mapped (sharp s/sigma) or
removed (joiner/nonjoiner).

In other words, hasDeviationCharacters() returns TRUE iff transitional and
nontransitional processing produce different results.

markus