IS_CHAR
if (ch < 0x100 && IS_CHAR(ch, B_CAP)) {
if (ch < 0x100 && IS_CHAR(ch, B_CAP))
if (IS_CHAR(ch, B_CAP)) {
if (ch < 0x100 && IS_CHAR(ch, B_NUM))
if (ch < 0x100 && IS_CHAR(ch, B_CAP)) {