Re: [whatwg/encoding] ISO-2022-JP encoder: convert halfwidth Katakana to fullwidth (#106)

I'd very much prefer a new index over special case plus reference to NFKC, because the latter risks inheriting bugs from whatever NFKC implementation the implementor uses to generate the table.

An index where the pointer is half-width code point minus 0xFF61 and the value is the code point to be looked up in index-jis0208 would be fine. That is, I think the new index doesn't doesn't need to flatten the logically subsequent index-0208 pointer lookup.


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