+/************************************************************************/
+/* Operations on individual bytes */
+/* of any format */
+/************************************************************************/
+
+/* These are carefully designed to work if BYTE is signed or unsigned. */
+/* Note that SPC and DEL are considered ASCII, not control. */
+
+#define BYTE_ASCII_P(byte) (((byte) & ~0x7f) == 0)
+#define BYTE_C0_P(byte) (((byte) & ~0x1f) == 0)
+#define BYTE_C1_P(byte) (((byte) & ~0x1f) == 0x80)
+
+
+/************************************************************************/
+/* Dealing with characters */
+/************************************************************************/
+
+/* Is this character represented by more than one byte in a string? */
+
+#define CHAR_MULTIBYTE_P(c) ((c) >= 0x80)
+
+