/*-*-mode:c++;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8-*-│
│ vi: set et ft=c++ ts=2 sts=2 sw=2 fenc=utf-8                             :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2024 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dce.h"
#include "libc/macros.h"
#include "libc/str/has_char.h"
#include "libc/wctype.h"

static const unsigned short kLower[][2] = {
    {0x61, 0x7a},      //
    {0xaa, 0xaa},      //
    {0xb5, 0xb5},      //
    {0xba, 0xba},      //
    {0xdf, 0xf6},      //
    {0xf8, 0xff},      //
    {0x101, 0x101},    //
    {0x103, 0x103},    //
    {0x105, 0x105},    //
    {0x107, 0x107},    //
    {0x109, 0x109},    //
    {0x10b, 0x10b},    //
    {0x10d, 0x10d},    //
    {0x10f, 0x10f},    //
    {0x111, 0x111},    //
    {0x113, 0x113},    //
    {0x115, 0x115},    //
    {0x117, 0x117},    //
    {0x119, 0x119},    //
    {0x11b, 0x11b},    //
    {0x11d, 0x11d},    //
    {0x11f, 0x11f},    //
    {0x121, 0x121},    //
    {0x123, 0x123},    //
    {0x125, 0x125},    //
    {0x127, 0x127},    //
    {0x129, 0x129},    //
    {0x12b, 0x12b},    //
    {0x12d, 0x12d},    //
    {0x12f, 0x12f},    //
    {0x131, 0x131},    //
    {0x133, 0x133},    //
    {0x135, 0x135},    //
    {0x137, 0x138},    //
    {0x13a, 0x13a},    //
    {0x13c, 0x13c},    //
    {0x13e, 0x13e},    //
    {0x140, 0x140},    //
    {0x142, 0x142},    //
    {0x144, 0x144},    //
    {0x146, 0x146},    //
    {0x148, 0x149},    //
    {0x14b, 0x14b},    //
    {0x14d, 0x14d},    //
    {0x14f, 0x14f},    //
    {0x151, 0x151},    //
    {0x153, 0x153},    //
    {0x155, 0x155},    //
    {0x157, 0x157},    //
    {0x159, 0x159},    //
    {0x15b, 0x15b},    //
    {0x15d, 0x15d},    //
    {0x15f, 0x15f},    //
    {0x161, 0x161},    //
    {0x163, 0x163},    //
    {0x165, 0x165},    //
    {0x167, 0x167},    //
    {0x169, 0x169},    //
    {0x16b, 0x16b},    //
    {0x16d, 0x16d},    //
    {0x16f, 0x16f},    //
    {0x171, 0x171},    //
    {0x173, 0x173},    //
    {0x175, 0x175},    //
    {0x177, 0x177},    //
    {0x17a, 0x17a},    //
    {0x17c, 0x17c},    //
    {0x17e, 0x180},    //
    {0x183, 0x183},    //
    {0x185, 0x185},    //
    {0x188, 0x188},    //
    {0x18c, 0x18d},    //
    {0x192, 0x192},    //
    {0x195, 0x195},    //
    {0x199, 0x19b},    //
    {0x19e, 0x19e},    //
    {0x1a1, 0x1a1},    //
    {0x1a3, 0x1a3},    //
    {0x1a5, 0x1a5},    //
    {0x1a8, 0x1a8},    //
    {0x1aa, 0x1ab},    //
    {0x1ad, 0x1ad},    //
    {0x1b0, 0x1b0},    //
    {0x1b4, 0x1b4},    //
    {0x1b6, 0x1b6},    //
    {0x1b9, 0x1ba},    //
    {0x1bd, 0x1bf},    //
    {0x1c5, 0x1c6},    //
    {0x1c8, 0x1c9},    //
    {0x1cb, 0x1cc},    //
    {0x1ce, 0x1ce},    //
    {0x1d0, 0x1d0},    //
    {0x1d2, 0x1d2},    //
    {0x1d4, 0x1d4},    //
    {0x1d6, 0x1d6},    //
    {0x1d8, 0x1d8},    //
    {0x1da, 0x1da},    //
    {0x1dc, 0x1dd},    //
    {0x1df, 0x1df},    //
    {0x1e1, 0x1e1},    //
    {0x1e3, 0x1e3},    //
    {0x1e5, 0x1e5},    //
    {0x1e7, 0x1e7},    //
    {0x1e9, 0x1e9},    //
    {0x1eb, 0x1eb},    //
    {0x1ed, 0x1ed},    //
    {0x1ef, 0x1f0},    //
    {0x1f2, 0x1f3},    //
    {0x1f5, 0x1f5},    //
    {0x1f9, 0x1f9},    //
    {0x1fb, 0x1fb},    //
    {0x1fd, 0x1fd},    //
    {0x1ff, 0x1ff},    //
    {0x201, 0x201},    //
    {0x203, 0x203},    //
    {0x205, 0x205},    //
    {0x207, 0x207},    //
    {0x209, 0x209},    //
    {0x20b, 0x20b},    //
    {0x20d, 0x20d},    //
    {0x20f, 0x20f},    //
    {0x211, 0x211},    //
    {0x213, 0x213},    //
    {0x215, 0x215},    //
    {0x217, 0x217},    //
    {0x219, 0x219},    //
    {0x21b, 0x21b},    //
    {0x21d, 0x21d},    //
    {0x21f, 0x21f},    //
    {0x221, 0x221},    //
    {0x223, 0x223},    //
    {0x225, 0x225},    //
    {0x227, 0x227},    //
    {0x229, 0x229},    //
    {0x22b, 0x22b},    //
    {0x22d, 0x22d},    //
    {0x22f, 0x22f},    //
    {0x231, 0x231},    //
    {0x233, 0x239},    //
    {0x23c, 0x23c},    //
    {0x23f, 0x240},    //
    {0x242, 0x242},    //
    {0x247, 0x247},    //
    {0x249, 0x249},    //
    {0x24b, 0x24b},    //
    {0x24d, 0x24d},    //
    {0x24f, 0x293},    //
    {0x295, 0x2b8},    //
    {0x2c0, 0x2c1},    //
    {0x2e0, 0x2e4},    //
    {0x345, 0x345},    //
    {0x371, 0x371},    //
    {0x373, 0x373},    //
    {0x377, 0x377},    //
    {0x37a, 0x37d},    //
    {0x390, 0x390},    //
    {0x3ac, 0x3ce},    //
    {0x3d0, 0x3d1},    //
    {0x3d5, 0x3d7},    //
    {0x3d9, 0x3d9},    //
    {0x3db, 0x3db},    //
    {0x3dd, 0x3dd},    //
    {0x3df, 0x3df},    //
    {0x3e1, 0x3e1},    //
    {0x3e3, 0x3e3},    //
    {0x3e5, 0x3e5},    //
    {0x3e7, 0x3e7},    //
    {0x3e9, 0x3e9},    //
    {0x3eb, 0x3eb},    //
    {0x3ed, 0x3ed},    //
    {0x3ef, 0x3f3},    //
    {0x3f5, 0x3f5},    //
    {0x3f8, 0x3f8},    //
    {0x3fb, 0x3fc},    //
    {0x430, 0x45f},    //
    {0x461, 0x461},    //
    {0x463, 0x463},    //
    {0x465, 0x465},    //
    {0x467, 0x467},    //
    {0x469, 0x469},    //
    {0x46b, 0x46b},    //
    {0x46d, 0x46d},    //
    {0x46f, 0x46f},    //
    {0x471, 0x471},    //
    {0x473, 0x473},    //
    {0x475, 0x475},    //
    {0x477, 0x477},    //
    {0x479, 0x479},    //
    {0x47b, 0x47b},    //
    {0x47d, 0x47d},    //
    {0x47f, 0x47f},    //
    {0x481, 0x481},    //
    {0x48b, 0x48b},    //
    {0x48d, 0x48d},    //
    {0x48f, 0x48f},    //
    {0x491, 0x491},    //
    {0x493, 0x493},    //
    {0x495, 0x495},    //
    {0x497, 0x497},    //
    {0x499, 0x499},    //
    {0x49b, 0x49b},    //
    {0x49d, 0x49d},    //
    {0x49f, 0x49f},    //
    {0x4a1, 0x4a1},    //
    {0x4a3, 0x4a3},    //
    {0x4a5, 0x4a5},    //
    {0x4a7, 0x4a7},    //
    {0x4a9, 0x4a9},    //
    {0x4ab, 0x4ab},    //
    {0x4ad, 0x4ad},    //
    {0x4af, 0x4af},    //
    {0x4b1, 0x4b1},    //
    {0x4b3, 0x4b3},    //
    {0x4b5, 0x4b5},    //
    {0x4b7, 0x4b7},    //
    {0x4b9, 0x4b9},    //
    {0x4bb, 0x4bb},    //
    {0x4bd, 0x4bd},    //
    {0x4bf, 0x4bf},    //
    {0x4c2, 0x4c2},    //
    {0x4c4, 0x4c4},    //
    {0x4c6, 0x4c6},    //
    {0x4c8, 0x4c8},    //
    {0x4ca, 0x4ca},    //
    {0x4cc, 0x4cc},    //
    {0x4ce, 0x4cf},    //
    {0x4d1, 0x4d1},    //
    {0x4d3, 0x4d3},    //
    {0x4d5, 0x4d5},    //
    {0x4d7, 0x4d7},    //
    {0x4d9, 0x4d9},    //
    {0x4db, 0x4db},    //
    {0x4dd, 0x4dd},    //
    {0x4df, 0x4df},    //
    {0x4e1, 0x4e1},    //
    {0x4e3, 0x4e3},    //
    {0x4e5, 0x4e5},    //
    {0x4e7, 0x4e7},    //
    {0x4e9, 0x4e9},    //
    {0x4eb, 0x4eb},    //
    {0x4ed, 0x4ed},    //
    {0x4ef, 0x4ef},    //
    {0x4f1, 0x4f1},    //
    {0x4f3, 0x4f3},    //
    {0x4f5, 0x4f5},    //
    {0x4f7, 0x4f7},    //
    {0x4f9, 0x4f9},    //
    {0x4fb, 0x4fb},    //
    {0x4fd, 0x4fd},    //
    {0x4ff, 0x4ff},    //
    {0x501, 0x501},    //
    {0x503, 0x503},    //
    {0x505, 0x505},    //
    {0x507, 0x507},    //
    {0x509, 0x509},    //
    {0x50b, 0x50b},    //
    {0x50d, 0x50d},    //
    {0x50f, 0x50f},    //
    {0x511, 0x511},    //
    {0x513, 0x513},    //
    {0x515, 0x515},    //
    {0x517, 0x517},    //
    {0x519, 0x519},    //
    {0x51b, 0x51b},    //
    {0x51d, 0x51d},    //
    {0x51f, 0x51f},    //
    {0x521, 0x521},    //
    {0x523, 0x523},    //
    {0x525, 0x525},    //
    {0x527, 0x527},    //
    {0x529, 0x529},    //
    {0x52b, 0x52b},    //
    {0x52d, 0x52d},    //
    {0x52f, 0x52f},    //
    {0x560, 0x588},    //
    {0x10d0, 0x10fa},  //
    {0x10fc, 0x10ff},  //
    {0x13f8, 0x13fd},  //
    {0x1c80, 0x1c88},  //
    {0x1d00, 0x1dbf},  //
    {0x1e01, 0x1e01},  //
    {0x1e03, 0x1e03},  //
    {0x1e05, 0x1e05},  //
    {0x1e07, 0x1e07},  //
    {0x1e09, 0x1e09},  //
    {0x1e0b, 0x1e0b},  //
    {0x1e0d, 0x1e0d},  //
    {0x1e0f, 0x1e0f},  //
    {0x1e11, 0x1e11},  //
    {0x1e13, 0x1e13},  //
    {0x1e15, 0x1e15},  //
    {0x1e17, 0x1e17},  //
    {0x1e19, 0x1e19},  //
    {0x1e1b, 0x1e1b},  //
    {0x1e1d, 0x1e1d},  //
    {0x1e1f, 0x1e1f},  //
    {0x1e21, 0x1e21},  //
    {0x1e23, 0x1e23},  //
    {0x1e25, 0x1e25},  //
    {0x1e27, 0x1e27},  //
    {0x1e29, 0x1e29},  //
    {0x1e2b, 0x1e2b},  //
    {0x1e2d, 0x1e2d},  //
    {0x1e2f, 0x1e2f},  //
    {0x1e31, 0x1e31},  //
    {0x1e33, 0x1e33},  //
    {0x1e35, 0x1e35},  //
    {0x1e37, 0x1e37},  //
    {0x1e39, 0x1e39},  //
    {0x1e3b, 0x1e3b},  //
    {0x1e3d, 0x1e3d},  //
    {0x1e3f, 0x1e3f},  //
    {0x1e41, 0x1e41},  //
    {0x1e43, 0x1e43},  //
    {0x1e45, 0x1e45},  //
    {0x1e47, 0x1e47},  //
    {0x1e49, 0x1e49},  //
    {0x1e4b, 0x1e4b},  //
    {0x1e4d, 0x1e4d},  //
    {0x1e4f, 0x1e4f},  //
    {0x1e51, 0x1e51},  //
    {0x1e53, 0x1e53},  //
    {0x1e55, 0x1e55},  //
    {0x1e57, 0x1e57},  //
    {0x1e59, 0x1e59},  //
    {0x1e5b, 0x1e5b},  //
    {0x1e5d, 0x1e5d},  //
    {0x1e5f, 0x1e5f},  //
    {0x1e61, 0x1e61},  //
    {0x1e63, 0x1e63},  //
    {0x1e65, 0x1e65},  //
    {0x1e67, 0x1e67},  //
    {0x1e69, 0x1e69},  //
    {0x1e6b, 0x1e6b},  //
    {0x1e6d, 0x1e6d},  //
    {0x1e6f, 0x1e6f},  //
    {0x1e71, 0x1e71},  //
    {0x1e73, 0x1e73},  //
    {0x1e75, 0x1e75},  //
    {0x1e77, 0x1e77},  //
    {0x1e79, 0x1e79},  //
    {0x1e7b, 0x1e7b},  //
    {0x1e7d, 0x1e7d},  //
    {0x1e7f, 0x1e7f},  //
    {0x1e81, 0x1e81},  //
    {0x1e83, 0x1e83},  //
    {0x1e85, 0x1e85},  //
    {0x1e87, 0x1e87},  //
    {0x1e89, 0x1e89},  //
    {0x1e8b, 0x1e8b},  //
    {0x1e8d, 0x1e8d},  //
    {0x1e8f, 0x1e8f},  //
    {0x1e91, 0x1e91},  //
    {0x1e93, 0x1e93},  //
    {0x1e95, 0x1e9d},  //
    {0x1e9f, 0x1e9f},  //
    {0x1ea1, 0x1ea1},  //
    {0x1ea3, 0x1ea3},  //
    {0x1ea5, 0x1ea5},  //
    {0x1ea7, 0x1ea7},  //
    {0x1ea9, 0x1ea9},  //
    {0x1eab, 0x1eab},  //
    {0x1ead, 0x1ead},  //
    {0x1eaf, 0x1eaf},  //
    {0x1eb1, 0x1eb1},  //
    {0x1eb3, 0x1eb3},  //
    {0x1eb5, 0x1eb5},  //
    {0x1eb7, 0x1eb7},  //
    {0x1eb9, 0x1eb9},  //
    {0x1ebb, 0x1ebb},  //
    {0x1ebd, 0x1ebd},  //
    {0x1ebf, 0x1ebf},  //
    {0x1ec1, 0x1ec1},  //
    {0x1ec3, 0x1ec3},  //
    {0x1ec5, 0x1ec5},  //
    {0x1ec7, 0x1ec7},  //
    {0x1ec9, 0x1ec9},  //
    {0x1ecb, 0x1ecb},  //
    {0x1ecd, 0x1ecd},  //
    {0x1ecf, 0x1ecf},  //
    {0x1ed1, 0x1ed1},  //
    {0x1ed3, 0x1ed3},  //
    {0x1ed5, 0x1ed5},  //
    {0x1ed7, 0x1ed7},  //
    {0x1ed9, 0x1ed9},  //
    {0x1edb, 0x1edb},  //
    {0x1edd, 0x1edd},  //
    {0x1edf, 0x1edf},  //
    {0x1ee1, 0x1ee1},  //
    {0x1ee3, 0x1ee3},  //
    {0x1ee5, 0x1ee5},  //
    {0x1ee7, 0x1ee7},  //
    {0x1ee9, 0x1ee9},  //
    {0x1eeb, 0x1eeb},  //
    {0x1eed, 0x1eed},  //
    {0x1eef, 0x1eef},  //
    {0x1ef1, 0x1ef1},  //
    {0x1ef3, 0x1ef3},  //
    {0x1ef5, 0x1ef5},  //
    {0x1ef7, 0x1ef7},  //
    {0x1ef9, 0x1ef9},  //
    {0x1efb, 0x1efb},  //
    {0x1efd, 0x1efd},  //
    {0x1eff, 0x1f07},  //
    {0x1f10, 0x1f15},  //
    {0x1f20, 0x1f27},  //
    {0x1f30, 0x1f37},  //
    {0x1f40, 0x1f45},  //
    {0x1f50, 0x1f57},  //
    {0x1f60, 0x1f67},  //
    {0x1f70, 0x1f7d},  //
    {0x1f80, 0x1f87},  //
    {0x1f90, 0x1f97},  //
    {0x1fa0, 0x1fa7},  //
    {0x1fb0, 0x1fb4},  //
    {0x1fb6, 0x1fb7},  //
    {0x1fbe, 0x1fbe},  //
    {0x1fc2, 0x1fc4},  //
    {0x1fc6, 0x1fc7},  //
    {0x1fd0, 0x1fd3},  //
    {0x1fd6, 0x1fd7},  //
    {0x1fe0, 0x1fe7},  //
    {0x1ff2, 0x1ff4},  //
    {0x1ff6, 0x1ff7},  //
    {0x2071, 0x2071},  //
    {0x207f, 0x207f},  //
    {0x2090, 0x209c},  //
    {0x210a, 0x210a},  //
    {0x210e, 0x210f},  //
    {0x2113, 0x2113},  //
    {0x212f, 0x212f},  //
    {0x2134, 0x2134},  //
    {0x2139, 0x2139},  //
    {0x213c, 0x213d},  //
    {0x2146, 0x2149},  //
    {0x214e, 0x214e},  //
    {0x2170, 0x217f},  //
    {0x2184, 0x2184},  //
    {0x24d0, 0x24e9},  //
    {0x2c30, 0x2c5f},  //
    {0x2c61, 0x2c61},  //
    {0x2c65, 0x2c66},  //
    {0x2c68, 0x2c68},  //
    {0x2c6a, 0x2c6a},  //
    {0x2c6c, 0x2c6c},  //
    {0x2c71, 0x2c71},  //
    {0x2c73, 0x2c74},  //
    {0x2c76, 0x2c7d},  //
    {0x2c81, 0x2c81},  //
    {0x2c83, 0x2c83},  //
    {0x2c85, 0x2c85},  //
    {0x2c87, 0x2c87},  //
    {0x2c89, 0x2c89},  //
    {0x2c8b, 0x2c8b},  //
    {0x2c8d, 0x2c8d},  //
    {0x2c8f, 0x2c8f},  //
    {0x2c91, 0x2c91},  //
    {0x2c93, 0x2c93},  //
    {0x2c95, 0x2c95},  //
    {0x2c97, 0x2c97},  //
    {0x2c99, 0x2c99},  //
    {0x2c9b, 0x2c9b},  //
    {0x2c9d, 0x2c9d},  //
    {0x2c9f, 0x2c9f},  //
    {0x2ca1, 0x2ca1},  //
    {0x2ca3, 0x2ca3},  //
    {0x2ca5, 0x2ca5},  //
    {0x2ca7, 0x2ca7},  //
    {0x2ca9, 0x2ca9},  //
    {0x2cab, 0x2cab},  //
    {0x2cad, 0x2cad},  //
    {0x2caf, 0x2caf},  //
    {0x2cb1, 0x2cb1},  //
    {0x2cb3, 0x2cb3},  //
    {0x2cb5, 0x2cb5},  //
    {0x2cb7, 0x2cb7},  //
    {0x2cb9, 0x2cb9},  //
    {0x2cbb, 0x2cbb},  //
    {0x2cbd, 0x2cbd},  //
    {0x2cbf, 0x2cbf},  //
    {0x2cc1, 0x2cc1},  //
    {0x2cc3, 0x2cc3},  //
    {0x2cc5, 0x2cc5},  //
    {0x2cc7, 0x2cc7},  //
    {0x2cc9, 0x2cc9},  //
    {0x2ccb, 0x2ccb},  //
    {0x2ccd, 0x2ccd},  //
    {0x2ccf, 0x2ccf},  //
    {0x2cd1, 0x2cd1},  //
    {0x2cd3, 0x2cd3},  //
    {0x2cd5, 0x2cd5},  //
    {0x2cd7, 0x2cd7},  //
    {0x2cd9, 0x2cd9},  //
    {0x2cdb, 0x2cdb},  //
    {0x2cdd, 0x2cdd},  //
    {0x2cdf, 0x2cdf},  //
    {0x2ce1, 0x2ce1},  //
    {0x2ce3, 0x2ce4},  //
    {0x2cec, 0x2cec},  //
    {0x2cee, 0x2cee},  //
    {0x2cf3, 0x2cf3},  //
    {0x2d00, 0x2d25},  //
    {0x2d27, 0x2d27},  //
    {0x2d2d, 0x2d2d},  //
    {0xa641, 0xa641},  //
    {0xa643, 0xa643},  //
    {0xa645, 0xa645},  //
    {0xa647, 0xa647},  //
    {0xa649, 0xa649},  //
    {0xa64b, 0xa64b},  //
    {0xa64d, 0xa64d},  //
    {0xa64f, 0xa64f},  //
    {0xa651, 0xa651},  //
    {0xa653, 0xa653},  //
    {0xa655, 0xa655},  //
    {0xa657, 0xa657},  //
    {0xa659, 0xa659},  //
    {0xa65b, 0xa65b},  //
    {0xa65d, 0xa65d},  //
    {0xa65f, 0xa65f},  //
    {0xa661, 0xa661},  //
    {0xa663, 0xa663},  //
    {0xa665, 0xa665},  //
    {0xa667, 0xa667},  //
    {0xa669, 0xa669},  //
    {0xa66b, 0xa66b},  //
    {0xa66d, 0xa66d},  //
    {0xa681, 0xa681},  //
    {0xa683, 0xa683},  //
    {0xa685, 0xa685},  //
    {0xa687, 0xa687},  //
    {0xa689, 0xa689},  //
    {0xa68b, 0xa68b},  //
    {0xa68d, 0xa68d},  //
    {0xa68f, 0xa68f},  //
    {0xa691, 0xa691},  //
    {0xa693, 0xa693},  //
    {0xa695, 0xa695},  //
    {0xa697, 0xa697},  //
    {0xa699, 0xa699},  //
    {0xa69b, 0xa69d},  //
    {0xa723, 0xa723},  //
    {0xa725, 0xa725},  //
    {0xa727, 0xa727},  //
    {0xa729, 0xa729},  //
    {0xa72b, 0xa72b},  //
    {0xa72d, 0xa72d},  //
    {0xa72f, 0xa731},  //
    {0xa733, 0xa733},  //
    {0xa735, 0xa735},  //
    {0xa737, 0xa737},  //
    {0xa739, 0xa739},  //
    {0xa73b, 0xa73b},  //
    {0xa73d, 0xa73d},  //
    {0xa73f, 0xa73f},  //
    {0xa741, 0xa741},  //
    {0xa743, 0xa743},  //
    {0xa745, 0xa745},  //
    {0xa747, 0xa747},  //
    {0xa749, 0xa749},  //
    {0xa74b, 0xa74b},  //
    {0xa74d, 0xa74d},  //
    {0xa74f, 0xa74f},  //
    {0xa751, 0xa751},  //
    {0xa753, 0xa753},  //
    {0xa755, 0xa755},  //
    {0xa757, 0xa757},  //
    {0xa759, 0xa759},  //
    {0xa75b, 0xa75b},  //
    {0xa75d, 0xa75d},  //
    {0xa75f, 0xa75f},  //
    {0xa761, 0xa761},  //
    {0xa763, 0xa763},  //
    {0xa765, 0xa765},  //
    {0xa767, 0xa767},  //
    {0xa769, 0xa769},  //
    {0xa76b, 0xa76b},  //
    {0xa76d, 0xa76d},  //
    {0xa76f, 0xa778},  //
    {0xa77a, 0xa77a},  //
    {0xa77c, 0xa77c},  //
    {0xa77f, 0xa77f},  //
    {0xa781, 0xa781},  //
    {0xa783, 0xa783},  //
    {0xa785, 0xa785},  //
    {0xa787, 0xa787},  //
    {0xa78c, 0xa78c},  //
    {0xa78e, 0xa78e},  //
    {0xa791, 0xa791},  //
    {0xa793, 0xa795},  //
    {0xa797, 0xa797},  //
    {0xa799, 0xa799},  //
    {0xa79b, 0xa79b},  //
    {0xa79d, 0xa79d},  //
    {0xa79f, 0xa79f},  //
    {0xa7a1, 0xa7a1},  //
    {0xa7a3, 0xa7a3},  //
    {0xa7a5, 0xa7a5},  //
    {0xa7a7, 0xa7a7},  //
    {0xa7a9, 0xa7a9},  //
    {0xa7af, 0xa7af},  //
    {0xa7b5, 0xa7b5},  //
    {0xa7b7, 0xa7b7},  //
    {0xa7b9, 0xa7b9},  //
    {0xa7bb, 0xa7bb},  //
    {0xa7bd, 0xa7bd},  //
    {0xa7bf, 0xa7bf},  //
    {0xa7c1, 0xa7c1},  //
    {0xa7c3, 0xa7c3},  //
    {0xa7c8, 0xa7c8},  //
    {0xa7ca, 0xa7ca},  //
    {0xa7d1, 0xa7d1},  //
    {0xa7d3, 0xa7d3},  //
    {0xa7d5, 0xa7d5},  //
    {0xa7d7, 0xa7d7},  //
    {0xa7d9, 0xa7d9},  //
    {0xa7f2, 0xa7f4},  //
    {0xa7f6, 0xa7f6},  //
    {0xa7f8, 0xa7fa},  //
    {0xab30, 0xab5a},  //
    {0xab5c, 0xab69},  //
    {0xab70, 0xabbf},  //
    {0xfb00, 0xfb06},  //
    {0xfb13, 0xfb17},  //
    {0xff41, 0xff5a},  //
};

static const unsigned kLowerAstral[][2] = {
    {0x10428, 0x1044f},  //
    {0x104d8, 0x104fb},  //
    {0x10597, 0x105a1},  //
    {0x105a3, 0x105b1},  //
    {0x105b3, 0x105b9},  //
    {0x105bb, 0x105bc},  //
    {0x10780, 0x10780},  //
    {0x10783, 0x10785},  //
    {0x10787, 0x107b0},  //
    {0x107b2, 0x107ba},  //
    {0x10cc0, 0x10cf2},  //
    {0x118c0, 0x118df},  //
    {0x16e60, 0x16e7f},  //
    {0x1d41a, 0x1d433},  //
    {0x1d44e, 0x1d454},  //
    {0x1d456, 0x1d467},  //
    {0x1d482, 0x1d49b},  //
    {0x1d4b6, 0x1d4b9},  //
    {0x1d4bb, 0x1d4bb},  //
    {0x1d4bd, 0x1d4c3},  //
    {0x1d4c5, 0x1d4cf},  //
    {0x1d4ea, 0x1d503},  //
    {0x1d51e, 0x1d537},  //
    {0x1d552, 0x1d56b},  //
    {0x1d586, 0x1d59f},  //
    {0x1d5ba, 0x1d5d3},  //
    {0x1d5ee, 0x1d607},  //
    {0x1d622, 0x1d63b},  //
    {0x1d656, 0x1d66f},  //
    {0x1d68a, 0x1d6a5},  //
    {0x1d6c2, 0x1d6da},  //
    {0x1d6dc, 0x1d6e1},  //
    {0x1d6fc, 0x1d714},  //
    {0x1d716, 0x1d71b},  //
    {0x1d736, 0x1d74e},  //
    {0x1d750, 0x1d755},  //
    {0x1d770, 0x1d788},  //
    {0x1d78a, 0x1d78f},  //
    {0x1d7aa, 0x1d7c2},  //
    {0x1d7c4, 0x1d7c9},  //
    {0x1d7cb, 0x1d7cb},  //
    {0x1df00, 0x1df09},  //
    {0x1df0b, 0x1df1e},  //
    {0x1df25, 0x1df2a},  //
    {0x1e030, 0x1e06d},  //
    {0x1e922, 0x1e943},  //
};

/**
 * Returns nonzero if c is lowercase letter.
 */
int iswlower(wint_t c) {
  if (!IsTiny() && c < 128)
    return 'a' <= c && c <= 'z';
  if (c < 65536)
    return has_char(kLower, ARRAYLEN(kLower), (unsigned short)c);
  return has_char(kLowerAstral, ARRAYLEN(kLowerAstral), (unsigned)c);
}

__weak_reference(iswlower, iswlower_l);