u8_strncat        578 maint/gnulib/lib/unistr.in.h        u8_strncat (uint8_t *_UC_RESTRICT dest, const uint8_t *src, size_t n);
u8_strncat         29 maint/gnulib/tests/unistr/test-u8-strncat.c #define U_STRNCAT u8_strncat