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A general description is here.
‘raw(0) | raw(0)’ again return ‘raw(0)’ (rather than ‘logical(0)’).
Following Unicode ‘Corrigendum 9’, the UTF-8 representations of U+FFFE and U+FFFF are now regarded as valid by ‘utf8ToInt()’.
‘raw(0) & raw(0)’ and ‘raw(0) | raw(0)’ again return ‘raw(0)’ (rather than ‘logical(0)’).
‘intToUtf8()’ converts integers corresponding to surrogate code points to ‘NA’ rather than invalid UTF-8, as well as values larger than the current Unicode maximum of ‘0x10FFFF’. (This aligns with the current RFC3629.)