extension PureXML.Regex.XSDCategory {
    /// Inclusive `[lo, hi]` code-point bounds of every range assigned by Unicode
    /// 3.2. XSD 1.0 regular expressions are normatively defined against Unicode
    /// 3.1, but the W3C conformance corpus is internally consistent only at 3.2:
    /// it expects code points added in 3.2 (Tagalog, Cyrillic Komi, and others)
    /// to be word characters, yet code points added in 4.0 (such as the Tamil
    /// digit zero U+0BE6) to be unassigned and so match `\D`. Derived clean-room
    /// from the Unicode Character Database `DerivedAge` property (ages <= 3.2),
    /// stored sorted and non-overlapping so membership is a binary search.
    private static let assignedRanges: [UInt32] = [
        0x0, 0x220, 0x222, 0x233, 0x250, 0x2AD, 0x2B0, 0x2EE, 0x300, 0x34F, 0x360, 0x36F,
        0x374, 0x375, 0x37A, 0x37A, 0x37E, 0x37E, 0x384, 0x38A, 0x38C, 0x38C, 0x38E, 0x3A1,
        0x3A3, 0x3CE, 0x3D0, 0x3F6, 0x400, 0x486, 0x488, 0x4CE, 0x4D0, 0x4F5, 0x4F8, 0x4F9,
        0x500, 0x50F, 0x531, 0x556, 0x559, 0x55F, 0x561, 0x587, 0x589, 0x58A, 0x591, 0x5A1,
        0x5A3, 0x5B9, 0x5BB, 0x5C4, 0x5D0, 0x5EA, 0x5F0, 0x5F4, 0x60C, 0x60C, 0x61B, 0x61B,
        0x61F, 0x61F, 0x621, 0x63A, 0x640, 0x655, 0x660, 0x6ED, 0x6F0, 0x6FE, 0x700, 0x70D,
        0x70F, 0x72C, 0x730, 0x74A, 0x780, 0x7B1, 0x901, 0x903, 0x905, 0x939, 0x93C, 0x94D,
        0x950, 0x954, 0x958, 0x970, 0x981, 0x983, 0x985, 0x98C, 0x98F, 0x990, 0x993, 0x9A8,
        0x9AA, 0x9B0, 0x9B2, 0x9B2, 0x9B6, 0x9B9, 0x9BC, 0x9BC, 0x9BE, 0x9C4, 0x9C7, 0x9C8,
        0x9CB, 0x9CD, 0x9D7, 0x9D7, 0x9DC, 0x9DD, 0x9DF, 0x9E3, 0x9E6, 0x9FA, 0xA02, 0xA02,
        0xA05, 0xA0A, 0xA0F, 0xA10, 0xA13, 0xA28, 0xA2A, 0xA30, 0xA32, 0xA33, 0xA35, 0xA36,
        0xA38, 0xA39, 0xA3C, 0xA3C, 0xA3E, 0xA42, 0xA47, 0xA48, 0xA4B, 0xA4D, 0xA59, 0xA5C,
        0xA5E, 0xA5E, 0xA66, 0xA74, 0xA81, 0xA83, 0xA85, 0xA8B, 0xA8D, 0xA8D, 0xA8F, 0xA91,
        0xA93, 0xAA8, 0xAAA, 0xAB0, 0xAB2, 0xAB3, 0xAB5, 0xAB9, 0xABC, 0xAC5, 0xAC7, 0xAC9,
        0xACB, 0xACD, 0xAD0, 0xAD0, 0xAE0, 0xAE0, 0xAE6, 0xAEF, 0xB01, 0xB03, 0xB05, 0xB0C,
        0xB0F, 0xB10, 0xB13, 0xB28, 0xB2A, 0xB30, 0xB32, 0xB33, 0xB36, 0xB39, 0xB3C, 0xB43,
        0xB47, 0xB48, 0xB4B, 0xB4D, 0xB56, 0xB57, 0xB5C, 0xB5D, 0xB5F, 0xB61, 0xB66, 0xB70,
        0xB82, 0xB83, 0xB85, 0xB8A, 0xB8E, 0xB90, 0xB92, 0xB95, 0xB99, 0xB9A, 0xB9C, 0xB9C,
        0xB9E, 0xB9F, 0xBA3, 0xBA4, 0xBA8, 0xBAA, 0xBAE, 0xBB5, 0xBB7, 0xBB9, 0xBBE, 0xBC2,
        0xBC6, 0xBC8, 0xBCA, 0xBCD, 0xBD7, 0xBD7, 0xBE7, 0xBF2, 0xC01, 0xC03, 0xC05, 0xC0C,
        0xC0E, 0xC10, 0xC12, 0xC28, 0xC2A, 0xC33, 0xC35, 0xC39, 0xC3E, 0xC44, 0xC46, 0xC48,
        0xC4A, 0xC4D, 0xC55, 0xC56, 0xC60, 0xC61, 0xC66, 0xC6F, 0xC82, 0xC83, 0xC85, 0xC8C,
        0xC8E, 0xC90, 0xC92, 0xCA8, 0xCAA, 0xCB3, 0xCB5, 0xCB9, 0xCBE, 0xCC4, 0xCC6, 0xCC8,
        0xCCA, 0xCCD, 0xCD5, 0xCD6, 0xCDE, 0xCDE, 0xCE0, 0xCE1, 0xCE6, 0xCEF, 0xD02, 0xD03,
        0xD05, 0xD0C, 0xD0E, 0xD10, 0xD12, 0xD28, 0xD2A, 0xD39, 0xD3E, 0xD43, 0xD46, 0xD48,
        0xD4A, 0xD4D, 0xD57, 0xD57, 0xD60, 0xD61, 0xD66, 0xD6F, 0xD82, 0xD83, 0xD85, 0xD96,
        0xD9A, 0xDB1, 0xDB3, 0xDBB, 0xDBD, 0xDBD, 0xDC0, 0xDC6, 0xDCA, 0xDCA, 0xDCF, 0xDD4,
        0xDD6, 0xDD6, 0xDD8, 0xDDF, 0xDF2, 0xDF4, 0xE01, 0xE3A, 0xE3F, 0xE5B, 0xE81, 0xE82,
        0xE84, 0xE84, 0xE87, 0xE88, 0xE8A, 0xE8A, 0xE8D, 0xE8D, 0xE94, 0xE97, 0xE99, 0xE9F,
        0xEA1, 0xEA3, 0xEA5, 0xEA5, 0xEA7, 0xEA7, 0xEAA, 0xEAB, 0xEAD, 0xEB9, 0xEBB, 0xEBD,
        0xEC0, 0xEC4, 0xEC6, 0xEC6, 0xEC8, 0xECD, 0xED0, 0xED9, 0xEDC, 0xEDD, 0xF00, 0xF47,
        0xF49, 0xF6A, 0xF71, 0xF8B, 0xF90, 0xF97, 0xF99, 0xFBC, 0xFBE, 0xFCC, 0xFCF, 0xFCF,
        0x1000, 0x1021, 0x1023, 0x1027, 0x1029, 0x102A, 0x102C, 0x1032, 0x1036, 0x1039, 0x1040, 0x1059,
        0x10A0, 0x10C5, 0x10D0, 0x10F8, 0x10FB, 0x10FB, 0x1100, 0x1159, 0x115F, 0x11A2, 0x11A8, 0x11F9,
        0x1200, 0x1206, 0x1208, 0x1246, 0x1248, 0x1248, 0x124A, 0x124D, 0x1250, 0x1256, 0x1258, 0x1258,
        0x125A, 0x125D, 0x1260, 0x1286, 0x1288, 0x1288, 0x128A, 0x128D, 0x1290, 0x12AE, 0x12B0, 0x12B0,
        0x12B2, 0x12B5, 0x12B8, 0x12BE, 0x12C0, 0x12C0, 0x12C2, 0x12C5, 0x12C8, 0x12CE, 0x12D0, 0x12D6,
        0x12D8, 0x12EE, 0x12F0, 0x130E, 0x1310, 0x1310, 0x1312, 0x1315, 0x1318, 0x131E, 0x1320, 0x1346,
        0x1348, 0x135A, 0x1361, 0x137C, 0x13A0, 0x13F4, 0x1401, 0x1676, 0x1680, 0x169C, 0x16A0, 0x16F0,
        0x1700, 0x170C, 0x170E, 0x1714, 0x1720, 0x1736, 0x1740, 0x1753, 0x1760, 0x176C, 0x176E, 0x1770,
        0x1772, 0x1773, 0x1780, 0x17DC, 0x17E0, 0x17E9, 0x1800, 0x180E, 0x1810, 0x1819, 0x1820, 0x1877,
        0x1880, 0x18A9, 0x1E00, 0x1E9B, 0x1EA0, 0x1EF9, 0x1F00, 0x1F15, 0x1F18, 0x1F1D, 0x1F20, 0x1F45,
        0x1F48, 0x1F4D, 0x1F50, 0x1F57, 0x1F59, 0x1F59, 0x1F5B, 0x1F5B, 0x1F5D, 0x1F5D, 0x1F5F, 0x1F7D,
        0x1F80, 0x1FB4, 0x1FB6, 0x1FC4, 0x1FC6, 0x1FD3, 0x1FD6, 0x1FDB, 0x1FDD, 0x1FEF, 0x1FF2, 0x1FF4,
        0x1FF6, 0x1FFE, 0x2000, 0x2052, 0x2057, 0x2057, 0x205F, 0x2063, 0x206A, 0x2071, 0x2074, 0x208E,
        0x20A0, 0x20B1, 0x20D0, 0x20EA, 0x2100, 0x213A, 0x213D, 0x214B, 0x2153, 0x2183, 0x2190, 0x23CE,
        0x2400, 0x2426, 0x2440, 0x244A, 0x2460, 0x24FE, 0x2500, 0x2613, 0x2616, 0x2617, 0x2619, 0x267D,
        0x2680, 0x2689, 0x2701, 0x2704, 0x2706, 0x2709, 0x270C, 0x2727, 0x2729, 0x274B, 0x274D, 0x274D,
        0x274F, 0x2752, 0x2756, 0x2756, 0x2758, 0x275E, 0x2761, 0x2794, 0x2798, 0x27AF, 0x27B1, 0x27BE,
        0x27D0, 0x27EB, 0x27F0, 0x2AFF, 0x2E80, 0x2E99, 0x2E9B, 0x2EF3, 0x2F00, 0x2FD5, 0x2FF0, 0x2FFB,
        0x3000, 0x303F, 0x3041, 0x3096, 0x3099, 0x30FF, 0x3105, 0x312C, 0x3131, 0x318E, 0x3190, 0x31B7,
        0x31F0, 0x321C, 0x3220, 0x3243, 0x3251, 0x327B, 0x327F, 0x32CB, 0x32D0, 0x32FE, 0x3300, 0x3376,
        0x337B, 0x33DD, 0x33E0, 0x33FE, 0x3400, 0x4DB5, 0x4E00, 0x9FA5, 0xA000, 0xA48C, 0xA490, 0xA4C6,
        0xAC00, 0xD7A3, 0xD800, 0xFA2D, 0xFA30, 0xFA6A, 0xFB00, 0xFB06, 0xFB13, 0xFB17, 0xFB1D, 0xFB36,
        0xFB38, 0xFB3C, 0xFB3E, 0xFB3E, 0xFB40, 0xFB41, 0xFB43, 0xFB44, 0xFB46, 0xFBB1, 0xFBD3, 0xFD3F,
        0xFD50, 0xFD8F, 0xFD92, 0xFDC7, 0xFDD0, 0xFDFC, 0xFE00, 0xFE0F, 0xFE20, 0xFE23, 0xFE30, 0xFE46,
        0xFE49, 0xFE52, 0xFE54, 0xFE66, 0xFE68, 0xFE6B, 0xFE70, 0xFE74, 0xFE76, 0xFEFC, 0xFEFF, 0xFEFF,
        0xFF01, 0xFFBE, 0xFFC2, 0xFFC7, 0xFFCA, 0xFFCF, 0xFFD2, 0xFFD7, 0xFFDA, 0xFFDC, 0xFFE0, 0xFFE6,
        0xFFE8, 0xFFEE, 0xFFF9, 0xFFFF, 0x10300, 0x1031E, 0x10320, 0x10323, 0x10330, 0x1034A, 0x10400, 0x10425,
        0x10428, 0x1044D, 0x1D000, 0x1D0F5, 0x1D100, 0x1D126, 0x1D12A, 0x1D1DD, 0x1D400, 0x1D454, 0x1D456, 0x1D49C,
        0x1D49E, 0x1D49F, 0x1D4A2, 0x1D4A2, 0x1D4A5, 0x1D4A6, 0x1D4A9, 0x1D4AC, 0x1D4AE, 0x1D4B9, 0x1D4BB, 0x1D4BB,
        0x1D4BD, 0x1D4C0, 0x1D4C2, 0x1D4C3, 0x1D4C5, 0x1D505, 0x1D507, 0x1D50A, 0x1D50D, 0x1D514, 0x1D516, 0x1D51C,
        0x1D51E, 0x1D539, 0x1D53B, 0x1D53E, 0x1D540, 0x1D544, 0x1D546, 0x1D546, 0x1D54A, 0x1D550, 0x1D552, 0x1D6A3,
        0x1D6A8, 0x1D7C9, 0x1D7CE, 0x1D7FF, 0x1FFFE, 0x2A6D6, 0x2F800, 0x2FA1D, 0x2FFFE, 0x2FFFF, 0x3FFFE, 0x3FFFF,
        0x4FFFE, 0x4FFFF, 0x5FFFE, 0x5FFFF, 0x6FFFE, 0x6FFFF, 0x7FFFE, 0x7FFFF, 0x8FFFE, 0x8FFFF, 0x9FFFE, 0x9FFFF,
        0xAFFFE, 0xAFFFF, 0xBFFFE, 0xBFFFF, 0xCFFFE, 0xCFFFF, 0xDFFFE, 0xDFFFF, 0xE0001, 0xE0001, 0xE0020, 0xE007F,
        0xEFFFE, 0x10FFFF,
    ]

    /// Whether `value` was an assigned code point as of Unicode 3.2. Binary
    /// search over ``assignedRanges``; each step compares one range's bounds.
    static func assignedInUnicode32(_ value: UInt32) -> Bool {
        var low = 0
        var high = assignedRanges.count / 2
        while low < high {
            let mid = (low + high) / 2
            if value < assignedRanges[mid * 2] {
                high = mid
            } else if value > assignedRanges[mid * 2 + 1] {
                low = mid + 1
            } else {
                return true
            }
        }
        return false
    }
}