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[perl #134262] Missing XSUB functions for UTF-8 char* buffers

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July 4, 2019 11:02
[perl #134262] Missing XSUB functions for UTF-8 char* buffers
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Hi! Currently there are (for x86) XSUB functions/macros which take only
Latin1 buffer. E.g. XST_mPV(), XSRETURN_PV(), POPpbytex, PUSHp(),
XPUSHs(), etc...

Could it be possible to add also UTF8 functions/macros variants?
E.g. XST_mPVutf8, XSRETURN_PVUTF8, POPputf8x, PUSHputf8, ...

It would simply working with UTF-8 char* strings as currently the only
way is to use XSRETURN_SV / POPs / PUSHs macros and construct SV* from
UTF-8 manually via newSVpvn_utf8().

And UTF-8 char* strings are needed to deal with UNICODE Perl strings
correctly, as Latin1 char* strings can store only U+00 .. U+FF UNICODE

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