[PATCH] Reset converter state after second wchar_t output (Bug 25734)

[Florian Weimer]

* Andreas Schwab:

> On Mär 27 2020, Carlos O'Donell wrote:
>
>> An input BIG5-HKSCS character may be converted into at most 2 whcar_t
>> characters.
>
> Could someone please file an interpretation request for POSIX, what
> should happen in that two wchar_t case?

Why POSIX and not ISO C?

I'm not sure if the C committee wants implementations to be able to
support Big5 (without Unicode changes first, to add characters which
avoid the two-codepoint special cases).