U_TOLOWER 41 maint/gnulib/lib/unicase/u16-is-cased.c #define U_TOLOWER u16_tolower U_TOLOWER 41 maint/gnulib/lib/unicase/u32-is-cased.c #define U_TOLOWER u32_tolower U_TOLOWER 41 maint/gnulib/lib/unicase/u8-is-cased.c #define U_TOLOWER u8_tolower