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#include "macros.h"
#include "mbstring.h"
rune
u8cut(u8view_t *restrict x, u8view_t *restrict y, const rune *seps,
size_t n)
{
ASSUME(y != nullptr);
ASSUME(seps != nullptr);
size_t off = u8cspn(*y, seps, n);
if (x != nullptr) {
x->p = y->p;
x->len = off;
}
VSHFT(y, off);
rune ch = MBEND;
u8next(&ch, y);
return ch;
}
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