qmk_firmware/keyboards/planck/keymaps/frederic
make planck/ez:frederic:flash
qmk flash -kb planck/ez -km frederic
Last version of macos disallowed for some reasons the use of unicode
#define E_AIG UC(0x00E9)
#define E_GRV UC(0x00E8)
#define E_CIR UC(0x00EA)
#define E_TRM UC(0x00EB)
#define A_CIR UC(0x00E2)
#define U_GRV UC(0x00F9)
#define U_CIR UC(0x00FB)
#define C_CED UC(0x00E7)
#define EURO UC(0x20AC)
#define O_CIR UC(0x00F4)
#define O_TRM UC(0x00F6)
#define I_TRM UC(0x00EF)
#define I_CIR UC(0x00EE)