Add Hex_Digit support from PropList.txt.

src/include/ucd/ucd.h

 ucd_script ucd_lookup_script(codepoint_t c);
 
 /** @brief Properties
-  */
+ */
 typedef enum ucd_property_
 {
 	UCD_PROPERTY_WHITE_SPACE          = 0x00000001, /**< @brief White_Space PropList */
 	UCD_PROPERTY_QUOTATION_MARK       = 0x00000040, /**< @brief Quotation_Mark PropList */
 	UCD_PROPERTY_TERMINAL_PUNCTUATION = 0x00000080, /**< @brief Terminal_Punctuation PropList */
 	UCD_PROPERTY_OTHER_MATH           = 0x00000100, /**< @brief Other_Math PropList */
+	UCD_PROPERTY_HEX_DIGIT            = 0x00000200, /**< @brief Hex_Digit PropList */
 } ucd_property;
 
 /** @brief Return the properties of the specified codepoint.
 	}
 
 	/** @brief Properties
-	  */
+	 */
 	enum property
 	{
 		White_Space = UCD_PROPERTY_WHITE_SPACE, /**< @brief White_Space PropList */
 		Quotation_Mark = UCD_PROPERTY_QUOTATION_MARK, /**< @brief Quotation_Mark PropList */
 		Terminal_Punctuation = UCD_PROPERTY_TERMINAL_PUNCTUATION, /**< @brief Terminal_Punctuation PropList */
 		Other_Math = UCD_PROPERTY_OTHER_MATH, /**< @brief Other_Math PropList */
+		Hex_Digit = UCD_PROPERTY_HEX_DIGIT, /**< @brief Hex_Digit PropList */
 	};
 
 	/** @brief Return the properties of the specified codepoint.

src/proplist.c

 {
 	switch (c & 0xFFFFFF00)
 	{
+	case 0x0000:
+		if (c >= 0x0061 && c <= 0x0066) return UCD_PROPERTY_HEX_DIGIT;
+		break;
 	case 0x0300:
 		if (c >= 0x03D0 && c <= 0x03D2) return UCD_PROPERTY_OTHER_MATH; // Ll|Lu
 		if (c == 0x03D5)                return UCD_PROPERTY_OTHER_MATH;
 		if (c >= 0x03F0 && c <= 0x03F1) return UCD_PROPERTY_OTHER_MATH;
 		if (c >= 0x03F4 && c <= 0x03F5) return UCD_PROPERTY_OTHER_MATH; // Ll|Lu
 		break;
+	case 0xFF00:
+		if (c >= 0xFF41 && c <= 0xFF46) return UCD_PROPERTY_HEX_DIGIT;
+		break;
 	case 0x2100:
 		if (c >= 0x210A && c <= 0x2113) return UCD_PROPERTY_OTHER_MATH; // Ll|Lu
 		if (c >= 0x212F && c <= 0x2131) return UCD_PROPERTY_OTHER_MATH; // Ll|Lu
 {
 	switch (c & 0xFFFFFF00)
 	{
+	case 0x0000:
+		if (c >= 0x0041 && c <= 0x0046) return UCD_PROPERTY_HEX_DIGIT;
+		break;
 	case 0x0300:
 		if (c >= 0x03D0 && c <= 0x03D2) return UCD_PROPERTY_OTHER_MATH; // Ll|Lu
 		if (c >= 0x03F4 && c <= 0x03F5) return UCD_PROPERTY_OTHER_MATH; // Ll|Lu
 		break;
+	case 0xFF00:
+		if (c >= 0xFF21 && c <= 0xFF26) return UCD_PROPERTY_HEX_DIGIT;
+		break;
 	case 0x2100:
 		if (c == 0x2102)                return UCD_PROPERTY_OTHER_MATH;
 		if (c == 0x2107)                return UCD_PROPERTY_OTHER_MATH;
 {
 	switch (c & 0xFFFFFF00)
 	{
+	case 0x0000:
+		if (c >= 0x0030 && c <= 0x0039) return UCD_PROPERTY_HEX_DIGIT;
+		break;
+	case 0xFF00:
+		if (c >= 0xFF10 && c <= 0xFF19) return UCD_PROPERTY_HEX_DIGIT;
+		break;
 	case 0x01D700:
 		if (c >= 0x01D7CE && c <= 0x01D7FF) return UCD_PROPERTY_OTHER_MATH;
 		break;

tools/printdata.py

 	props +=  64 * data.get('Quotation_Mark', 0)
 	props += 128 * data.get('Terminal_Punctuation', 0)
 	props += 256 * data.get('Other_Math', 0)
+	props += 512 * data.get('Hex_Digit', 0)
 	return props
 
 if __name__ == '__main__':