Clean up some of the code

quantum/quantum.c

@@ -962,8 +962,7 @@ void send_char(char ascii_code) {
   if (is_shifted) { register_code(KC_LSFT); }
   if (is_alted) { register_code(KC_RALT); }
 
-  register_code(keycode);
+  tap_code(keycode);
-  unregister_code(keycode);
 
   if (is_alted) { unregister_code(KC_RALT); }
   if (is_shifted) { unregister_code(KC_LSFT); }

quantum/quantum.h

@@ -206,6 +206,7 @@ extern uint32_t default_layer_state;
 
 #define SEND_STRING(str) send_string_P(PSTR(str))
 extern const bool ascii_to_shift_lut[0x80];
+extern const bool ascii_to_alt_lut[0x80];
 extern const uint8_t ascii_to_keycode_lut[0x80];
 void send_string(const char *str);
 void send_string_with_delay(const char *str, uint8_t interval);