U8_CANON_DECOMP
canonical_decomposition = flag & U8_CANON_DECOMP;
f = flag & (U8_CANON_DECOMP | U8_COMPAT_DECOMP | U8_CANON_COMP);
f = flag & (U8_CANON_DECOMP | U8_COMPAT_DECOMP | U8_CANON_COMP);
canonical_decomposition = flag & U8_CANON_DECOMP;
#define U8_STRCMP_NFD (U8_CANON_DECOMP)
#define U8_STRCMP_NFC (U8_CANON_DECOMP | U8_CANON_COMP)