u16_strncat       580 maint/gnulib/lib/unistr.in.h        u16_strncat (uint16_t *_UC_RESTRICT dest, const uint16_t *src, size_t n);
u16_strncat        31 maint/gnulib/lib/unistr/u16-strncat.c #define FUNC u16_strncat
u16_strncat        29 maint/gnulib/tests/unistr/test-u16-strncat.c #define U_STRNCAT u16_strncat