--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dep/utf8proc/utf8proc.h	Thu Apr 11 10:22:05 2024 -0400
@@ -0,0 +1,743 @@
+/*
+ * Copyright (c) 2014-2021 Steven G. Johnson, Jiahao Chen, Peter Colberg, Tony Kelman, Scott P. Jones, and other contributors.
+ * Copyright (c) 2009 Public Software Group e. V., Berlin, Germany
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * @mainpage
+ *
+ * utf8proc is a free/open-source (MIT/expat licensed) C library
+ * providing Unicode normalization, case-folding, and other operations
+ * for strings in the UTF-8 encoding, supporting up-to-date Unicode versions.
+ * See the utf8proc home page (http://julialang.org/utf8proc/)
+ * for downloads and other information, or the source code on github
+ * (https://github.com/JuliaLang/utf8proc).
+ *
+ * For the utf8proc API documentation, see: @ref utf8proc.h
+ *
+ * The features of utf8proc include:
+ *
+ * - Transformation of strings (@ref utf8proc_map) to:
+ *    - decompose (@ref UTF8PROC_DECOMPOSE) or compose (@ref UTF8PROC_COMPOSE) Unicode combining characters (http://en.wikipedia.org/wiki/Combining_character)
+ *    - canonicalize Unicode compatibility characters (@ref UTF8PROC_COMPAT)
+ *    - strip "ignorable" (@ref UTF8PROC_IGNORE) characters, control characters (@ref UTF8PROC_STRIPCC), or combining characters such as accents (@ref UTF8PROC_STRIPMARK)
+ *    - case-folding (@ref UTF8PROC_CASEFOLD)
+ * - Unicode normalization: @ref utf8proc_NFD, @ref utf8proc_NFC, @ref utf8proc_NFKD, @ref utf8proc_NFKC
+ * - Detecting grapheme boundaries (@ref utf8proc_grapheme_break and @ref UTF8PROC_CHARBOUND)
+ * - Character-width computation: @ref utf8proc_charwidth
+ * - Classification of characters by Unicode category: @ref utf8proc_category and @ref utf8proc_category_string
+ * - Encode (@ref utf8proc_encode_char) and decode (@ref utf8proc_iterate) Unicode codepoints to/from UTF-8.
+ */
+
+/** @file */
+
+#ifndef UTF8PROC_H
+#define UTF8PROC_H
+
+/** @name API version
+ *
+ * The utf8proc API version MAJOR.MINOR.PATCH, following
+ * semantic-versioning rules (http://semver.org) based on API
+ * compatibility.
+ *
+ * This is also returned at runtime by @ref utf8proc_version; however, the
+ * runtime version may append a string like "-dev" to the version number
+ * for prerelease versions.
+ *
+ * @note The shared-library version number in the Makefile
+ *       (and CMakeLists.txt, and MANIFEST) may be different,
+ *       being based on ABI compatibility rather than API compatibility.
+ */
+/** @{ */
+/** The MAJOR version number (increased when backwards API compatibility is broken). */
+#define UTF8PROC_VERSION_MAJOR 2
+/** The MINOR version number (increased when new functionality is added in a backwards-compatible manner). */
+#define UTF8PROC_VERSION_MINOR 9
+/** The PATCH version (increased for fixes that do not change the API). */
+#define UTF8PROC_VERSION_PATCH 0
+/** @} */
+
+#include <stdlib.h>
+
+#if defined(_MSC_VER) && _MSC_VER < 1800
+// MSVC prior to 2013 lacked stdbool.h and inttypes.h
+typedef signed char utf8proc_int8_t;
+typedef unsigned char utf8proc_uint8_t;
+typedef short utf8proc_int16_t;
+typedef unsigned short utf8proc_uint16_t;
+typedef int utf8proc_int32_t;
+typedef unsigned int utf8proc_uint32_t;
+#  ifdef _WIN64
+typedef __int64 utf8proc_ssize_t;
+typedef unsigned __int64 utf8proc_size_t;
+#  else
+typedef int utf8proc_ssize_t;
+typedef unsigned int utf8proc_size_t;
+#  endif
+#  ifndef __cplusplus
+// emulate C99 bool
+typedef unsigned char utf8proc_bool;
+#    ifndef __bool_true_false_are_defined
+#      define false 0
+#      define true 1
+#      define __bool_true_false_are_defined 1
+#    endif
+#  else
+typedef bool utf8proc_bool;
+#  endif
+#else
+#  include <stddef.h>
+#  include <stdbool.h>
+#  include <inttypes.h>
+typedef int8_t utf8proc_int8_t;
+typedef uint8_t utf8proc_uint8_t;
+typedef int16_t utf8proc_int16_t;
+typedef uint16_t utf8proc_uint16_t;
+typedef int32_t utf8proc_int32_t;
+typedef uint32_t utf8proc_uint32_t;
+typedef size_t utf8proc_size_t;
+typedef ptrdiff_t utf8proc_ssize_t;
+typedef bool utf8proc_bool;
+#endif
+#include <limits.h>
+
+#ifdef UTF8PROC_STATIC
+#  define UTF8PROC_DLLEXPORT
+#else
+#  ifdef _WIN32
+#    ifdef UTF8PROC_EXPORTS
+#      define UTF8PROC_DLLEXPORT __declspec(dllexport)
+#    else
+#      define UTF8PROC_DLLEXPORT __declspec(dllimport)
+#    endif
+#  elif __GNUC__ >= 4
+#    define UTF8PROC_DLLEXPORT __attribute__ ((visibility("default")))
+#  else
+#    define UTF8PROC_DLLEXPORT
+#  endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Option flags used by several functions in the library.
+ */
+typedef enum {
+  /** The given UTF-8 input is NULL terminated. */
+  UTF8PROC_NULLTERM  = (1<<0),
+  /** Unicode Versioning Stability has to be respected. */
+  UTF8PROC_STABLE    = (1<<1),
+  /** Compatibility decomposition (i.e. formatting information is lost). */
+  UTF8PROC_COMPAT    = (1<<2),
+  /** Return a result with decomposed characters. */
+  UTF8PROC_COMPOSE   = (1<<3),
+  /** Return a result with decomposed characters. */
+  UTF8PROC_DECOMPOSE = (1<<4),
+  /** Strip "default ignorable characters" such as SOFT-HYPHEN or ZERO-WIDTH-SPACE. */
+  UTF8PROC_IGNORE    = (1<<5),
+  /** Return an error, if the input contains unassigned codepoints. */
+  UTF8PROC_REJECTNA  = (1<<6),
+  /**
+   * Indicating that NLF-sequences (LF, CRLF, CR, NEL) are representing a
+   * line break, and should be converted to the codepoint for line
+   * separation (LS).
+   */
+  UTF8PROC_NLF2LS    = (1<<7),
+  /**
+   * Indicating that NLF-sequences are representing a paragraph break, and
+   * should be converted to the codepoint for paragraph separation
+   * (PS).
+   */
+  UTF8PROC_NLF2PS    = (1<<8),
+  /** Indicating that the meaning of NLF-sequences is unknown. */
+  UTF8PROC_NLF2LF    = (UTF8PROC_NLF2LS | UTF8PROC_NLF2PS),
+  /** Strips and/or convers control characters.
+   *
+   * NLF-sequences are transformed into space, except if one of the
+   * NLF2LS/PS/LF options is given. HorizontalTab (HT) and FormFeed (FF)
+   * are treated as a NLF-sequence in this case.  All other control
+   * characters are simply removed.
+   */
+  UTF8PROC_STRIPCC   = (1<<9),
+  /**
+   * Performs unicode case folding, to be able to do a case-insensitive
+   * string comparison.
+   */
+  UTF8PROC_CASEFOLD  = (1<<10),
+  /**
+   * Inserts 0xFF bytes at the beginning of each sequence which is
+   * representing a single grapheme cluster (see UAX#29).
+   */
+  UTF8PROC_CHARBOUND = (1<<11),
+  /** Lumps certain characters together.
+   *
+   * E.g. HYPHEN U+2010 and MINUS U+2212 to ASCII "-". See lump.md for details.
+   *
+   * If NLF2LF is set, this includes a transformation of paragraph and
+   * line separators to ASCII line-feed (LF).
+   */
+  UTF8PROC_LUMP      = (1<<12),
+  /** Strips all character markings.
+   *
+   * This includes non-spacing, spacing and enclosing (i.e. accents).
+   * @note This option works only with @ref UTF8PROC_COMPOSE or
+   *       @ref UTF8PROC_DECOMPOSE
+   */
+  UTF8PROC_STRIPMARK = (1<<13),
+  /**
+   * Strip unassigned codepoints.
+   */
+  UTF8PROC_STRIPNA    = (1<<14),
+} utf8proc_option_t;
+
+/** @name Error codes
+ * Error codes being returned by almost all functions.
+ */
+/** @{ */
+/** Memory could not be allocated. */
+#define UTF8PROC_ERROR_NOMEM -1
+/** The given string is too long to be processed. */
+#define UTF8PROC_ERROR_OVERFLOW -2
+/** The given string is not a legal UTF-8 string. */
+#define UTF8PROC_ERROR_INVALIDUTF8 -3
+/** The @ref UTF8PROC_REJECTNA flag was set and an unassigned codepoint was found. */
+#define UTF8PROC_ERROR_NOTASSIGNED -4
+/** Invalid options have been used. */
+#define UTF8PROC_ERROR_INVALIDOPTS -5
+/** @} */
+
+/* @name Types */
+
+/** Holds the value of a property. */
+typedef utf8proc_int16_t utf8proc_propval_t;
+
+/** Struct containing information about a codepoint. */
+typedef struct utf8proc_property_struct {
+  /**
+   * Unicode category.
+   * @see utf8proc_category_t.
+   */
+  utf8proc_propval_t category;
+  utf8proc_propval_t combining_class;
+  /**
+   * Bidirectional class.
+   * @see utf8proc_bidi_class_t.
+   */
+  utf8proc_propval_t bidi_class;
+  /**
+   * @anchor Decomposition type.
+   * @see utf8proc_decomp_type_t.
+   */
+  utf8proc_propval_t decomp_type;
+  utf8proc_uint16_t decomp_seqindex;
+  utf8proc_uint16_t casefold_seqindex;
+  utf8proc_uint16_t uppercase_seqindex;
+  utf8proc_uint16_t lowercase_seqindex;
+  utf8proc_uint16_t titlecase_seqindex;
+  utf8proc_uint16_t comb_index;
+  unsigned bidi_mirrored:1;
+  unsigned comp_exclusion:1;
+  /**
+   * Can this codepoint be ignored?
+   *
+   * Used by @ref utf8proc_decompose_char when @ref UTF8PROC_IGNORE is
+   * passed as an option.
+   */
+  unsigned ignorable:1;
+  unsigned control_boundary:1;
+  /** The width of the codepoint. */
+  unsigned charwidth:2;
+  unsigned pad:2;
+  /**
+   * Boundclass.
+   * @see utf8proc_boundclass_t.
+   */
+  unsigned boundclass:6;
+  unsigned indic_conjunct_break:2;
+} utf8proc_property_t;
+
+/** Unicode categories. */
+typedef enum {
+  UTF8PROC_CATEGORY_CN  = 0, /**< Other, not assigned */
+  UTF8PROC_CATEGORY_LU  = 1, /**< Letter, uppercase */
+  UTF8PROC_CATEGORY_LL  = 2, /**< Letter, lowercase */
+  UTF8PROC_CATEGORY_LT  = 3, /**< Letter, titlecase */
+  UTF8PROC_CATEGORY_LM  = 4, /**< Letter, modifier */
+  UTF8PROC_CATEGORY_LO  = 5, /**< Letter, other */
+  UTF8PROC_CATEGORY_MN  = 6, /**< Mark, nonspacing */
+  UTF8PROC_CATEGORY_MC  = 7, /**< Mark, spacing combining */
+  UTF8PROC_CATEGORY_ME  = 8, /**< Mark, enclosing */
+  UTF8PROC_CATEGORY_ND  = 9, /**< Number, decimal digit */
+  UTF8PROC_CATEGORY_NL = 10, /**< Number, letter */
+  UTF8PROC_CATEGORY_NO = 11, /**< Number, other */
+  UTF8PROC_CATEGORY_PC = 12, /**< Punctuation, connector */
+  UTF8PROC_CATEGORY_PD = 13, /**< Punctuation, dash */
+  UTF8PROC_CATEGORY_PS = 14, /**< Punctuation, open */
+  UTF8PROC_CATEGORY_PE = 15, /**< Punctuation, close */
+  UTF8PROC_CATEGORY_PI = 16, /**< Punctuation, initial quote */
+  UTF8PROC_CATEGORY_PF = 17, /**< Punctuation, final quote */
+  UTF8PROC_CATEGORY_PO = 18, /**< Punctuation, other */
+  UTF8PROC_CATEGORY_SM = 19, /**< Symbol, math */
+  UTF8PROC_CATEGORY_SC = 20, /**< Symbol, currency */
+  UTF8PROC_CATEGORY_SK = 21, /**< Symbol, modifier */
+  UTF8PROC_CATEGORY_SO = 22, /**< Symbol, other */
+  UTF8PROC_CATEGORY_ZS = 23, /**< Separator, space */
+  UTF8PROC_CATEGORY_ZL = 24, /**< Separator, line */
+  UTF8PROC_CATEGORY_ZP = 25, /**< Separator, paragraph */
+  UTF8PROC_CATEGORY_CC = 26, /**< Other, control */
+  UTF8PROC_CATEGORY_CF = 27, /**< Other, format */
+  UTF8PROC_CATEGORY_CS = 28, /**< Other, surrogate */
+  UTF8PROC_CATEGORY_CO = 29, /**< Other, private use */
+} utf8proc_category_t;
+
+/** Bidirectional character classes. */
+typedef enum {
+  UTF8PROC_BIDI_CLASS_L     = 1, /**< Left-to-Right */
+  UTF8PROC_BIDI_CLASS_LRE   = 2, /**< Left-to-Right Embedding */
+  UTF8PROC_BIDI_CLASS_LRO   = 3, /**< Left-to-Right Override */
+  UTF8PROC_BIDI_CLASS_R     = 4, /**< Right-to-Left */
+  UTF8PROC_BIDI_CLASS_AL    = 5, /**< Right-to-Left Arabic */
+  UTF8PROC_BIDI_CLASS_RLE   = 6, /**< Right-to-Left Embedding */
+  UTF8PROC_BIDI_CLASS_RLO   = 7, /**< Right-to-Left Override */
+  UTF8PROC_BIDI_CLASS_PDF   = 8, /**< Pop Directional Format */
+  UTF8PROC_BIDI_CLASS_EN    = 9, /**< European Number */
+  UTF8PROC_BIDI_CLASS_ES   = 10, /**< European Separator */
+  UTF8PROC_BIDI_CLASS_ET   = 11, /**< European Number Terminator */
+  UTF8PROC_BIDI_CLASS_AN   = 12, /**< Arabic Number */
+  UTF8PROC_BIDI_CLASS_CS   = 13, /**< Common Number Separator */
+  UTF8PROC_BIDI_CLASS_NSM  = 14, /**< Nonspacing Mark */
+  UTF8PROC_BIDI_CLASS_BN   = 15, /**< Boundary Neutral */
+  UTF8PROC_BIDI_CLASS_B    = 16, /**< Paragraph Separator */
+  UTF8PROC_BIDI_CLASS_S    = 17, /**< Segment Separator */
+  UTF8PROC_BIDI_CLASS_WS   = 18, /**< Whitespace */
+  UTF8PROC_BIDI_CLASS_ON   = 19, /**< Other Neutrals */
+  UTF8PROC_BIDI_CLASS_LRI  = 20, /**< Left-to-Right Isolate */
+  UTF8PROC_BIDI_CLASS_RLI  = 21, /**< Right-to-Left Isolate */
+  UTF8PROC_BIDI_CLASS_FSI  = 22, /**< First Strong Isolate */
+  UTF8PROC_BIDI_CLASS_PDI  = 23, /**< Pop Directional Isolate */
+} utf8proc_bidi_class_t;
+
+/** Decomposition type. */
+typedef enum {
+  UTF8PROC_DECOMP_TYPE_FONT      = 1, /**< Font */
+  UTF8PROC_DECOMP_TYPE_NOBREAK   = 2, /**< Nobreak */
+  UTF8PROC_DECOMP_TYPE_INITIAL   = 3, /**< Initial */
+  UTF8PROC_DECOMP_TYPE_MEDIAL    = 4, /**< Medial */
+  UTF8PROC_DECOMP_TYPE_FINAL     = 5, /**< Final */
+  UTF8PROC_DECOMP_TYPE_ISOLATED  = 6, /**< Isolated */
+  UTF8PROC_DECOMP_TYPE_CIRCLE    = 7, /**< Circle */
+  UTF8PROC_DECOMP_TYPE_SUPER     = 8, /**< Super */
+  UTF8PROC_DECOMP_TYPE_SUB       = 9, /**< Sub */
+  UTF8PROC_DECOMP_TYPE_VERTICAL = 10, /**< Vertical */
+  UTF8PROC_DECOMP_TYPE_WIDE     = 11, /**< Wide */
+  UTF8PROC_DECOMP_TYPE_NARROW   = 12, /**< Narrow */
+  UTF8PROC_DECOMP_TYPE_SMALL    = 13, /**< Small */
+  UTF8PROC_DECOMP_TYPE_SQUARE   = 14, /**< Square */
+  UTF8PROC_DECOMP_TYPE_FRACTION = 15, /**< Fraction */
+  UTF8PROC_DECOMP_TYPE_COMPAT   = 16, /**< Compat */
+} utf8proc_decomp_type_t;
+
+/** Boundclass property. (TR29) */
+typedef enum {
+  UTF8PROC_BOUNDCLASS_START              =  0, /**< Start */
+  UTF8PROC_BOUNDCLASS_OTHER              =  1, /**< Other */
+  UTF8PROC_BOUNDCLASS_CR                 =  2, /**< Cr */
+  UTF8PROC_BOUNDCLASS_LF                 =  3, /**< Lf */
+  UTF8PROC_BOUNDCLASS_CONTROL            =  4, /**< Control */
+  UTF8PROC_BOUNDCLASS_EXTEND             =  5, /**< Extend */
+  UTF8PROC_BOUNDCLASS_L                  =  6, /**< L */
+  UTF8PROC_BOUNDCLASS_V                  =  7, /**< V */
+  UTF8PROC_BOUNDCLASS_T                  =  8, /**< T */
+  UTF8PROC_BOUNDCLASS_LV                 =  9, /**< Lv */
+  UTF8PROC_BOUNDCLASS_LVT                = 10, /**< Lvt */
+  UTF8PROC_BOUNDCLASS_REGIONAL_INDICATOR = 11, /**< Regional indicator */
+  UTF8PROC_BOUNDCLASS_SPACINGMARK        = 12, /**< Spacingmark */
+  UTF8PROC_BOUNDCLASS_PREPEND            = 13, /**< Prepend */
+  UTF8PROC_BOUNDCLASS_ZWJ                = 14, /**< Zero Width Joiner */
+
+  /* the following are no longer used in Unicode 11, but we keep
+     the constants here for backward compatibility */
+  UTF8PROC_BOUNDCLASS_E_BASE             = 15, /**< Emoji Base */
+  UTF8PROC_BOUNDCLASS_E_MODIFIER         = 16, /**< Emoji Modifier */
+  UTF8PROC_BOUNDCLASS_GLUE_AFTER_ZWJ     = 17, /**< Glue_After_ZWJ */
+  UTF8PROC_BOUNDCLASS_E_BASE_GAZ         = 18, /**< E_BASE + GLUE_AFTER_ZJW */
+
+  /* the Extended_Pictographic property is used in the Unicode 11
+     grapheme-boundary rules, so we store it in the boundclass field */
+  UTF8PROC_BOUNDCLASS_EXTENDED_PICTOGRAPHIC = 19,
+  UTF8PROC_BOUNDCLASS_E_ZWG = 20, /* UTF8PROC_BOUNDCLASS_EXTENDED_PICTOGRAPHIC + ZWJ */
+} utf8proc_boundclass_t;
+
+/** Indic_Conjunct_Break property. (TR44) */
+typedef enum {
+  UTF8PROC_INDIC_CONJUNCT_BREAK_NONE = 0,
+  UTF8PROC_INDIC_CONJUNCT_BREAK_LINKER = 1,
+  UTF8PROC_INDIC_CONJUNCT_BREAK_CONSONANT = 2,
+  UTF8PROC_INDIC_CONJUNCT_BREAK_EXTEND = 3,
+} utf8proc_indic_conjunct_break_t;
+
+/**
+ * Function pointer type passed to @ref utf8proc_map_custom and
+ * @ref utf8proc_decompose_custom, which is used to specify a user-defined
+ * mapping of codepoints to be applied in conjunction with other mappings.
+ */
+typedef utf8proc_int32_t (*utf8proc_custom_func)(utf8proc_int32_t codepoint, void *data);
+
+/**
+ * Array containing the byte lengths of a UTF-8 encoded codepoint based
+ * on the first byte.
+ */
+UTF8PROC_DLLEXPORT extern const utf8proc_int8_t utf8proc_utf8class[256];
+
+/**
+ * Returns the utf8proc API version as a string MAJOR.MINOR.PATCH
+ * (http://semver.org format), possibly with a "-dev" suffix for
+ * development versions.
+ */
+UTF8PROC_DLLEXPORT const char *utf8proc_version(void);
+
+/**
+ * Returns the utf8proc supported Unicode version as a string MAJOR.MINOR.PATCH.
+ */
+UTF8PROC_DLLEXPORT const char *utf8proc_unicode_version(void);
+
+/**
+ * Returns an informative error string for the given utf8proc error code
+ * (e.g. the error codes returned by @ref utf8proc_map).
+ */
+UTF8PROC_DLLEXPORT const char *utf8proc_errmsg(utf8proc_ssize_t errcode);
+
+/**
+ * Reads a single codepoint from the UTF-8 sequence being pointed to by `str`.
+ * The maximum number of bytes read is `strlen`, unless `strlen` is
+ * negative (in which case up to 4 bytes are read).
+ *
+ * If a valid codepoint could be read, it is stored in the variable
+ * pointed to by `codepoint_ref`, otherwise that variable will be set to -1.
+ * In case of success, the number of bytes read is returned; otherwise, a
+ * negative error code is returned.
+ */
+UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_iterate(const utf8proc_uint8_t *str, utf8proc_ssize_t strlen, utf8proc_int32_t *codepoint_ref);
+
+/**
+ * Check if a codepoint is valid (regardless of whether it has been
+ * assigned a value by the current Unicode standard).
+ *
+ * @return 1 if the given `codepoint` is valid and otherwise return 0.
+ */
+UTF8PROC_DLLEXPORT utf8proc_bool utf8proc_codepoint_valid(utf8proc_int32_t codepoint);
+
+/**
+ * Encodes the codepoint as an UTF-8 string in the byte array pointed
+ * to by `dst`. This array must be at least 4 bytes long.
+ *
+ * In case of success the number of bytes written is returned, and
+ * otherwise 0 is returned.
+ *
+ * This function does not check whether `codepoint` is valid Unicode.
+ */
+UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_encode_char(utf8proc_int32_t codepoint, utf8proc_uint8_t *dst);
+
+/**
+ * Look up the properties for a given codepoint.
+ *
+ * @param codepoint The Unicode codepoint.
+ *
+ * @returns
+ * A pointer to a (constant) struct containing information about
+ * the codepoint.
+ * @par
+ * If the codepoint is unassigned or invalid, a pointer to a special struct is
+ * returned in which `category` is 0 (@ref UTF8PROC_CATEGORY_CN).
+ */
+UTF8PROC_DLLEXPORT const utf8proc_property_t *utf8proc_get_property(utf8proc_int32_t codepoint);
+
+/** Decompose a codepoint into an array of codepoints.
+ *
+ * @param codepoint the codepoint.
+ * @param dst the destination buffer.
+ * @param bufsize the size of the destination buffer.
+ * @param options one or more of the following flags:
+ * - @ref UTF8PROC_REJECTNA  - return an error `codepoint` is unassigned
+ * - @ref UTF8PROC_IGNORE    - strip "default ignorable" codepoints
+ * - @ref UTF8PROC_CASEFOLD  - apply Unicode casefolding
+ * - @ref UTF8PROC_COMPAT    - replace certain codepoints with their
+ *                             compatibility decomposition
+ * - @ref UTF8PROC_CHARBOUND - insert 0xFF bytes before each grapheme cluster
+ * - @ref UTF8PROC_LUMP      - lump certain different codepoints together
+ * - @ref UTF8PROC_STRIPMARK - remove all character marks
+ * - @ref UTF8PROC_STRIPNA   - remove unassigned codepoints
+ * @param last_boundclass
+ * Pointer to an integer variable containing
+ * the previous codepoint's (boundclass + indic_conjunct_break << 1) if the @ref UTF8PROC_CHARBOUND
+ * option is used.  If the string is being processed in order, this can be initialized to 0 for
+ * the beginning of the string, and is thereafter updated automatically.  Otherwise, this parameter is ignored.
+ *
+ * @return
+ * In case of success, the number of codepoints written is returned; in case
+ * of an error, a negative error code is returned (@ref utf8proc_errmsg).
+ * @par
+ * If the number of written codepoints would be bigger than `bufsize`, the
+ * required buffer size is returned, while the buffer will be overwritten with
+ * undefined data.
+ */
+UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_decompose_char(
+  utf8proc_int32_t codepoint, utf8proc_int32_t *dst, utf8proc_ssize_t bufsize,
+  utf8proc_option_t options, int *last_boundclass
+);
+
+/**
+ * The same as @ref utf8proc_decompose_char, but acts on a whole UTF-8
+ * string and orders the decomposed sequences correctly.
+ *
+ * If the @ref UTF8PROC_NULLTERM flag in `options` is set, processing
+ * will be stopped, when a NULL byte is encountered, otherwise `strlen`
+ * bytes are processed.  The result (in the form of 32-bit unicode
+ * codepoints) is written into the buffer being pointed to by
+ * `buffer` (which must contain at least `bufsize` entries).  In case of
+ * success, the number of codepoints written is returned; in case of an
+ * error, a negative error code is returned (@ref utf8proc_errmsg).
+ * See @ref utf8proc_decompose_custom to supply additional transformations.
+ *
+ * If the number of written codepoints would be bigger than `bufsize`, the
+ * required buffer size is returned, while the buffer will be overwritten with
+ * undefined data.
+ */
+UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_decompose(
+  const utf8proc_uint8_t *str, utf8proc_ssize_t strlen,
+  utf8proc_int32_t *buffer, utf8proc_ssize_t bufsize, utf8proc_option_t options
+);
+
+/**
+ * The same as @ref utf8proc_decompose, but also takes a `custom_func` mapping function
+ * that is called on each codepoint in `str` before any other transformations
+ * (along with a `custom_data` pointer that is passed through to `custom_func`).
+ * The `custom_func` argument is ignored if it is `NULL`.  See also @ref utf8proc_map_custom.
+ */
+UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_decompose_custom(
+  const utf8proc_uint8_t *str, utf8proc_ssize_t strlen,
+  utf8proc_int32_t *buffer, utf8proc_ssize_t bufsize, utf8proc_option_t options,
+  utf8proc_custom_func custom_func, void *custom_data
+);
+
+/**
+ * Normalizes the sequence of `length` codepoints pointed to by `buffer`
+ * in-place (i.e., the result is also stored in `buffer`).
+ *
+ * @param buffer the (native-endian UTF-32) unicode codepoints to re-encode.
+ * @param length the length (in codepoints) of the buffer.
+ * @param options a bitwise or (`|`) of one or more of the following flags:
+ * - @ref UTF8PROC_NLF2LS  - convert LF, CRLF, CR and NEL into LS
+ * - @ref UTF8PROC_NLF2PS  - convert LF, CRLF, CR and NEL into PS
+ * - @ref UTF8PROC_NLF2LF  - convert LF, CRLF, CR and NEL into LF
+ * - @ref UTF8PROC_STRIPCC - strip or convert all non-affected control characters
+ * - @ref UTF8PROC_COMPOSE - try to combine decomposed codepoints into composite
+ *                           codepoints
+ * - @ref UTF8PROC_STABLE  - prohibit combining characters that would violate
+ *                           the unicode versioning stability
+ *
+ * @return
+ * In case of success, the length (in codepoints) of the normalized UTF-32 string is
+ * returned; otherwise, a negative error code is returned (@ref utf8proc_errmsg).
+ *
+ * @warning The entries of the array pointed to by `str` have to be in the
+ *          range `0x0000` to `0x10FFFF`. Otherwise, the program might crash!
+ */
+UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_normalize_utf32(utf8proc_int32_t *buffer, utf8proc_ssize_t length, utf8proc_option_t options);
+
+/**
+ * Reencodes the sequence of `length` codepoints pointed to by `buffer`
+ * UTF-8 data in-place (i.e., the result is also stored in `buffer`).
+ * Can optionally normalize the UTF-32 sequence prior to UTF-8 conversion.
+ *
+ * @param buffer the (native-endian UTF-32) unicode codepoints to re-encode.
+ * @param length the length (in codepoints) of the buffer.
+ * @param options a bitwise or (`|`) of one or more of the following flags:
+ * - @ref UTF8PROC_NLF2LS  - convert LF, CRLF, CR and NEL into LS
+ * - @ref UTF8PROC_NLF2PS  - convert LF, CRLF, CR and NEL into PS
+ * - @ref UTF8PROC_NLF2LF  - convert LF, CRLF, CR and NEL into LF
+ * - @ref UTF8PROC_STRIPCC - strip or convert all non-affected control characters
+ * - @ref UTF8PROC_COMPOSE - try to combine decomposed codepoints into composite
+ *                           codepoints
+ * - @ref UTF8PROC_STABLE  - prohibit combining characters that would violate
+ *                           the unicode versioning stability
+ * - @ref UTF8PROC_CHARBOUND - insert 0xFF bytes before each grapheme cluster
+ *
+ * @return
+ * In case of success, the length (in bytes) of the resulting nul-terminated
+ * UTF-8 string is returned; otherwise, a negative error code is returned
+ * (@ref utf8proc_errmsg).
+ *
+ * @warning The amount of free space pointed to by `buffer` must
+ *          exceed the amount of the input data by one byte, and the
+ *          entries of the array pointed to by `str` have to be in the
+ *          range `0x0000` to `0x10FFFF`. Otherwise, the program might crash!
+ */
+UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_reencode(utf8proc_int32_t *buffer, utf8proc_ssize_t length, utf8proc_option_t options);
+
+/**
+ * Given a pair of consecutive codepoints, return whether a grapheme break is
+ * permitted between them (as defined by the extended grapheme clusters in UAX#29).
+ *
+ * @param codepoint1 The first codepoint.
+ * @param codepoint2 The second codepoint, occurring consecutively after `codepoint1`.
+ * @param state Beginning with Version 29 (Unicode 9.0.0), this algorithm requires
+ *              state to break graphemes. This state can be passed in as a pointer
+ *              in the `state` argument and should initially be set to 0. If the
+ *              state is not passed in (i.e. a null pointer is passed), UAX#29 rules
+ *              GB10/12/13 which require this state will not be applied, essentially
+ *              matching the rules in Unicode 8.0.0.
+ *
+ * @warning If the state parameter is used, `utf8proc_grapheme_break_stateful` must
+ *          be called IN ORDER on ALL potential breaks in a string.  However, it
+ *          is safe to reset the state to zero after a grapheme break.
+ */
+UTF8PROC_DLLEXPORT utf8proc_bool utf8proc_grapheme_break_stateful(
+    utf8proc_int32_t codepoint1, utf8proc_int32_t codepoint2, utf8proc_int32_t *state);
+
+/**
+ * Same as @ref utf8proc_grapheme_break_stateful, except without support for the
+ * Unicode 9 additions to the algorithm. Supported for legacy reasons.
+ */
+UTF8PROC_DLLEXPORT utf8proc_bool utf8proc_grapheme_break(
+    utf8proc_int32_t codepoint1, utf8proc_int32_t codepoint2);
+
+
+/**
+ * Given a codepoint `c`, return the codepoint of the corresponding
+ * lower-case character, if any; otherwise (if there is no lower-case
+ * variant, or if `c` is not a valid codepoint) return `c`.
+ */
+UTF8PROC_DLLEXPORT utf8proc_int32_t utf8proc_tolower(utf8proc_int32_t c);
+
+/**
+ * Given a codepoint `c`, return the codepoint of the corresponding
+ * upper-case character, if any; otherwise (if there is no upper-case
+ * variant, or if `c` is not a valid codepoint) return `c`.
+ */
+UTF8PROC_DLLEXPORT utf8proc_int32_t utf8proc_toupper(utf8proc_int32_t c);
+
+/**
+ * Given a codepoint `c`, return the codepoint of the corresponding
+ * title-case character, if any; otherwise (if there is no title-case
+ * variant, or if `c` is not a valid codepoint) return `c`.
+ */
+UTF8PROC_DLLEXPORT utf8proc_int32_t utf8proc_totitle(utf8proc_int32_t c);
+
+/**
+ * Given a codepoint `c`, return `1` if the codepoint corresponds to a lower-case character
+ * and `0` otherwise.
+ */
+UTF8PROC_DLLEXPORT int utf8proc_islower(utf8proc_int32_t c);
+
+/**
+ * Given a codepoint `c`, return `1` if the codepoint corresponds to an upper-case character
+ * and `0` otherwise.
+ */
+UTF8PROC_DLLEXPORT int utf8proc_isupper(utf8proc_int32_t c);
+
+/**
+ * Given a codepoint, return a character width analogous to `wcwidth(codepoint)`,
+ * except that a width of 0 is returned for non-printable codepoints
+ * instead of -1 as in `wcwidth`.
+ *
+ * @note
+ * If you want to check for particular types of non-printable characters,
+ * (analogous to `isprint` or `iscntrl`), use @ref utf8proc_category. */
+UTF8PROC_DLLEXPORT int utf8proc_charwidth(utf8proc_int32_t codepoint);
+
+/**
+ * Return the Unicode category for the codepoint (one of the
+ * @ref utf8proc_category_t constants.)
+ */
+UTF8PROC_DLLEXPORT utf8proc_category_t utf8proc_category(utf8proc_int32_t codepoint);
+
+/**
+ * Return the two-letter (nul-terminated) Unicode category string for
+ * the codepoint (e.g. `"Lu"` or `"Co"`).
+ */
+UTF8PROC_DLLEXPORT const char *utf8proc_category_string(utf8proc_int32_t codepoint);
+
+/**
+ * Maps the given UTF-8 string pointed to by `str` to a new UTF-8
+ * string, allocated dynamically by `malloc` and returned via `dstptr`.
+ *
+ * If the @ref UTF8PROC_NULLTERM flag in the `options` field is set,
+ * the length is determined by a NULL terminator, otherwise the
+ * parameter `strlen` is evaluated to determine the string length, but
+ * in any case the result will be NULL terminated (though it might
+ * contain NULL characters with the string if `str` contained NULL
+ * characters). Other flags in the `options` field are passed to the
+ * functions defined above, and regarded as described.  See also
+ * @ref utf8proc_map_custom to supply a custom codepoint transformation.
+ *
+ * In case of success the length of the new string is returned,
+ * otherwise a negative error code is returned.
+ *
+ * @note The memory of the new UTF-8 string will have been allocated
+ * with `malloc`, and should therefore be deallocated with `free`.
+ */
+UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_map(
+  const utf8proc_uint8_t *str, utf8proc_ssize_t strlen, utf8proc_uint8_t **dstptr, utf8proc_option_t options
+);
+
+/**
+ * Like @ref utf8proc_map, but also takes a `custom_func` mapping function
+ * that is called on each codepoint in `str` before any other transformations
+ * (along with a `custom_data` pointer that is passed through to `custom_func`).
+ * The `custom_func` argument is ignored if it is `NULL`.
+ */
+UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_map_custom(
+  const utf8proc_uint8_t *str, utf8proc_ssize_t strlen, utf8proc_uint8_t **dstptr, utf8proc_option_t options,
+  utf8proc_custom_func custom_func, void *custom_data
+);
+
+/** @name Unicode normalization
+ *
+ * Returns a pointer to newly allocated memory of a NFD, NFC, NFKD, NFKC or
+ * NFKC_Casefold normalized version of the null-terminated string `str`.  These
+ * are shortcuts to calling @ref utf8proc_map with @ref UTF8PROC_NULLTERM
+ * combined with @ref UTF8PROC_STABLE and flags indicating the normalization.
+ */
+/** @{ */
+/** NFD normalization (@ref UTF8PROC_DECOMPOSE). */
+UTF8PROC_DLLEXPORT utf8proc_uint8_t *utf8proc_NFD(const utf8proc_uint8_t *str);
+/** NFC normalization (@ref UTF8PROC_COMPOSE). */
+UTF8PROC_DLLEXPORT utf8proc_uint8_t *utf8proc_NFC(const utf8proc_uint8_t *str);
+/** NFKD normalization (@ref UTF8PROC_DECOMPOSE and @ref UTF8PROC_COMPAT). */
+UTF8PROC_DLLEXPORT utf8proc_uint8_t *utf8proc_NFKD(const utf8proc_uint8_t *str);
+/** NFKC normalization (@ref UTF8PROC_COMPOSE and @ref UTF8PROC_COMPAT). */
+UTF8PROC_DLLEXPORT utf8proc_uint8_t *utf8proc_NFKC(const utf8proc_uint8_t *str);
+/**
+ * NFKC_Casefold normalization (@ref UTF8PROC_COMPOSE and @ref UTF8PROC_COMPAT
+ * and @ref UTF8PROC_CASEFOLD and @ref UTF8PROC_IGNORE).
+ **/
+UTF8PROC_DLLEXPORT utf8proc_uint8_t *utf8proc_NFKC_Casefold(const utf8proc_uint8_t *str);
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif