50行の正規表現で文書内の複雑なテキスト構造を効率的にチャンキング

AIハンズオンチュートリアル更新：9ヶ月前 シャレーネット
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Trae

JinaのCEOであるシャオ・ハンが、Jinaトークナイザーで使われているチャンキングのコア実装の印象的なコード・スニペットをGitHubで共有した。正規表現のコードスニペットは50行強の長さだが、あらゆる複雑なテキストコンテンツのチャンキングを効率的に処理している。性能は驚くほど堅牢だ。

 

50行正则表达式实现对文档内复杂文本结构高效分块

オンライン経験：https://jina.ai/tokenizer/

 

// Updated: Aug. 15, 2024
// Run: node testRegex.js testText.txt
// Used in https://jina.ai/tokenizer
const fs = require('fs');
const util = require('util');

// Define variables for magic numbers
const MAX_HEADING_LENGTH = 7;
const MAX_HEADING_CONTENT_LENGTH = 200;
const MAX_HEADING_UNDERLINE_LENGTH = 200;
const MAX_HTML_HEADING_ATTRIBUTES_LENGTH = 100;
const MAX_LIST_ITEM_LENGTH = 200;
const MAX_NESTED_LIST_ITEMS = 6;
const MAX_LIST_INDENT_SPACES = 7;
const MAX_BLOCKQUOTE_LINE_LENGTH = 200;
const MAX_BLOCKQUOTE_LINES = 15;
const MAX_CODE_BLOCK_LENGTH = 1500;
const MAX_CODE_LANGUAGE_LENGTH = 20;
const MAX_INDENTED_CODE_LINES = 20;
const MAX_TABLE_CELL_LENGTH = 200;
const MAX_TABLE_ROWS = 20;
const MAX_HTML_TABLE_LENGTH = 2000;
const MIN_HORIZONTAL_RULE_LENGTH = 3;
const MAX_SENTENCE_LENGTH = 400;
const MAX_QUOTED_TEXT_LENGTH = 300;
const MAX_PARENTHETICAL_CONTENT_LENGTH = 200;
const MAX_NESTED_PARENTHESES = 5;
const MAX_MATH_INLINE_LENGTH = 100;
const MAX_MATH_BLOCK_LENGTH = 500;
const MAX_PARAGRAPH_LENGTH = 1000;
const MAX_STANDALONE_LINE_LENGTH = 800;
const MAX_HTML_TAG_ATTRIBUTES_LENGTH = 100;
const MAX_HTML_TAG_CONTENT_LENGTH = 1000;
const LOOKAHEAD_RANGE = 100;  // Number of characters to look ahead for a sentence boundary

// Define the regex pattern
// Headings
// Citations
// List items
// Block quotes
// Code blocks
// Tables
// Horizontal rules
// Standalone lines or phrases
// Sentences or phrases
// Quoted text, parenthetical phrases, or bracketed content
// Paragraphs
// HTML-like tags and their content
// LaTeX-style math expressions
// Fallback for any remaining content
// Read the regex and test text from files

const chunkRegex = new RegExp(
    "(" +
    // 1. Headings (Setext-style, Markdown, and HTML-style, with length constraints)
    `(?:^(?:[#*=-]{1,${MAX_HEADING_LENGTH}}|\\w[^\\r\\n]{0,${MAX_HEADING_CONTENT_LENGTH}}\\r?\\n[-=]{2,${MAX_HEADING_UNDERLINE_LENGTH}}|<h[1-6][^>]{0,${MAX_HTML_HEADING_ATTRIBUTES_LENGTH}}>)[^\\r\\n]{1,${MAX_HEADING_CONTENT_LENGTH}}(?:</h[1-6]>)?(?:\\r?\\n|$))` +
    "|" +
    // New pattern for citations
    `(?:\\[[0-9]+\\][^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}})` +
    "|" +
    // 2. List items (bulleted, numbered, lettered, or task lists, including nested, up to three levels, with length constraints)
    `(?:(?:^|\\r?\\n)[ \\t]{0,3}(?:[-*+•]|\\d{1,3}\\.\\w\\.|\\[[ xX]\\])[ \\t]+(?:(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[\\r\\n]|$))|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))` +
    `(?:(?:\\r?\\n[ \\t]{2,5}(?:[-*+•]|\\d{1,3}\\.\\w\\.|\\[[ xX]\\])[ \\t]+(?:(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[\\r\\n]|$))|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?)))` +
    `{0,${MAX_NESTED_LIST_ITEMS}}(?:\\r?\\n[ \\t]{4,${MAX_LIST_INDENT_SPACES}}(?:[-*+•]|\\d{1,3}\\.\\w\\.|\\[[ xX]\\])[ \\t]+(?:(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[\\r\\n]|$))|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?)))` +
    `{0,${MAX_NESTED_LIST_ITEMS}})?)` +
    "|" +
    // 3. Block quotes (including nested quotes and citations, up to three levels, with length constraints)
    `(?:(?:^>(?:>|\\s{2,}){0,2}(?:(?:\\b[^\\r\\n]{0,${MAX_BLOCKQUOTE_LINE_LENGTH}}\\b(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:\\b[^\\r\\n]{0,${MAX_BLOCKQUOTE_LINE_LENGTH}}\\b(?=[\\r\\n]|$))|(?:\\b[^\\r\\n]{0,${MAX_BLOCKQUOTE_LINE_LENGTH}}\\b(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))\\r?\\n?){1,${MAX_BLOCKQUOTE_LINES}})` +
    "|" +
    // 4. Code blocks (fenced, indented, or HTML pre/code tags, with length constraints)
    `(?:(?:^|\\r?\\n)(?:\`\`\`|~~~)(?:\\w{0,${MAX_CODE_LANGUAGE_LENGTH}})?\\r?\\n[\\s\\S]{0,${MAX_CODE_BLOCK_LENGTH}}?(?:\`\`\`|~~~)\\r?\\n?` +
    `|(?:(?:^|\\r?\\n)(?: {4}|\\t)[^\\r\\n]{0,${MAX_LIST_ITEM_LENGTH}}(?:\\r?\\n(?: {4}|\\t)[^\\r\\n]{0,${MAX_LIST_ITEM_LENGTH}}){0,${MAX_INDENTED_CODE_LINES}}\\r?\\n?)` +
    `|(?:<pre>(?:<code>)?[\\s\\S]{0,${MAX_CODE_BLOCK_LENGTH}}?(?:</code>)?</pre>))` +
    "|" +
    // 5. Tables (Markdown, grid tables, and HTML tables, with length constraints)
    `(?:(?:^|\\r?\\n)(?:\\|[^\\r\\n]{0,${MAX_TABLE_CELL_LENGTH}}\\|(?:\\r?\\n\\|[-:]{1,${MAX_TABLE_CELL_LENGTH}}\\|){0,1}(?:\\r?\\n\\|[^\\r\\n]{0,${MAX_TABLE_CELL_LENGTH}}\\|){0,${MAX_TABLE_ROWS}}` +
    `|<table>[\\s\\S]{0,${MAX_HTML_TABLE_LENGTH}}?</table>))` +
    "|" +
    // 6. Horizontal rules (Markdown and HTML hr tag)
    `(?:^(?:[-*_]){${MIN_HORIZONTAL_RULE_LENGTH},}\\s*$|<hr\\s*/?>)` +
    "|" +
    // 10. Standalone lines or phrases (including single-line blocks and HTML elements, with length constraints)
    `(?:^(?:<[a-zA-Z][^>]{0,${MAX_HTML_TAG_ATTRIBUTES_LENGTH}}>)?(?:(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?:[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?=[\\r\\n]|$))|(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?=[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))(?:</[a-zA-Z]+>)?(?:\\r?\\n|$))` +
    "|" +
    // 7. Sentences or phrases ending with punctuation (including ellipsis and Unicode punctuation)
    `(?:(?:[^\\r\\n]{1,${MAX_SENTENCE_LENGTH}}(?:[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:[^\\r\\n]{1,${MAX_SENTENCE_LENGTH}}(?=[\\r\\n]|$))|(?:[^\\r\\n]{1,${MAX_SENTENCE_LENGTH}}(?=[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))` +
    "|" +
    // 8. Quoted text, parenthetical phrases, or bracketed content (with length constraints)
    "(?:" +
    `(?<!\\w)\"\"\"[^\"]{0,${MAX_QUOTED_TEXT_LENGTH}}\"\"\"(?!\\w)` +
    `|(?<!\\w)(?:['\"\`'"])[^\\r\\n]{0,${MAX_QUOTED_TEXT_LENGTH}}\\1(?!\\w)` +
    `|\\([^\\r\\n()]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}(?:\\([^\\r\\n()]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}\\)[^\\r\\n()]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}){0,${MAX_NESTED_PARENTHESES}}\\)` +
    `|\\[[^\\r\\n\\[\\]]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}(?:\\[[^\\r\\n\\[\\]]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}\\][^\\r\\n\\[\\]]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}){0,${MAX_NESTED_PARENTHESES}}\\]` +
    `|\\$[^\\r\\n$]{0,${MAX_MATH_INLINE_LENGTH}}\\$` +
    `|\`[^\`\\r\\n]{0,${MAX_MATH_INLINE_LENGTH}}\`` +
    ")" +
    "|" +
    // 9. Paragraphs (with length constraints)
    `(?:(?:^|\\r?\\n\\r?\\n)(?:<p>)?(?:(?:[^\\r\\n]{1,${MAX_PARAGRAPH_LENGTH}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:[^\\r\\n]{1,${MAX_PARAGRAPH_LENGTH}}(?=[\\r\\n]|$))|(?:[^\\r\\n]{1,${MAX_PARAGRAPH_LENGTH}}(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))(?:</p>)?(?=\\r?\\n\\r?\\n|$))` +
    "|" +
    // 11. HTML-like tags and their content (including self-closing tags and attributes, with length constraints)
    `(?:<[a-zA-Z][^>]{0,${MAX_HTML_TAG_ATTRIBUTES_LENGTH}}(?:>[\\s\\S]{0,${MAX_HTML_TAG_CONTENT_LENGTH}}?</[a-zA-Z]+>|\\s*/>))` +
    "|" +
    // 12. LaTeX-style math expressions (inline and block, with length constraints)
    `(?:(?:\\$\\$[\\s\\S]{0,${MAX_MATH_BLOCK_LENGTH}}?\\$\\$)|(?:\\$[^\\$\\r\\n]{0,${MAX_MATH_INLINE_LENGTH}}\\$))` +
    "|" +
    // 14. Fallback for any remaining content (with length constraints)
    `(?:(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?=[\\r\\n]|$))|(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))` +
    ")",
    "gmu"
);

// read from the arg[1] file
const testText = fs.readFileSync(process.argv[2], 'utf8');

// Function to format bytes to a human-readable string
function formatBytes(bytes) {
    if (bytes < 1024) return bytes + " bytes";
    else if (bytes < 1048576) return (bytes / 1024).toFixed(2) + " KB";
    else if (bytes < 1073741824) return (bytes / 1048576).toFixed(2) + " MB";
    else return (bytes / 1073741824).toFixed(2) + " GB";
}

// Start measuring time and memory
const startTime = process.hrtime();
const startMemory = process.memoryUsage().heapUsed;

// Apply the regex
const matches = testText.match(chunkRegex);

// End measuring time and memory
const endTime = process.hrtime(startTime);
const endMemory = process.memoryUsage().heapUsed;

// Calculate execution time and memory usage
const executionTime = endTime[0] + endTime[1] / 1e9;
const memoryUsed = endMemory - startMemory;

// Output results
console.log(`Number of chunks: ${matches ? matches.length : 0}`);
console.log(`Execution time: ${executionTime.toFixed(3)} seconds`);
console.log(`Memory used: ${formatBytes(memoryUsed)}`);

// Output the first 5 matches (or fewer if there are less than 5)
console.log('\nFirst 10 chunks:');
if (matches) {
    matches.slice(0, 100).forEach((match, index) => {
        console.log(util.inspect(match, {maxStringLength: 50}));
    });
} else {
    console.log('No chunks found.');
}

// Output regex flags
console.log(`\nRegex flags: ${chunkRegex.flags}`);

// Check for potential issues
if (executionTime > 5) {
    console.warn('\nWarning: Execution time exceeded 5 seconds. The regex might be too complex or the input too large.');
}
if (memoryUsed > 100 * 1024 * 1024) {
    console.warn('\nWarning: Memory usage exceeded 100 MB. Consider processing the input in smaller chunks.');
}

 

このコードの正規表現は、見出し、リストアイテム、ブロック参照、コードブロック、テーブル、水平ルール、独立した行やフレーズ、句読点を含む文やフレーズ、引用テキスト、括弧コンテンツ、コードブロック、テーブル、水平ルール、独立した行やフレーズ、HTMLタグコンテンツ、LaTeX数式など、さまざまなテキスト構造を考慮します。正規表現自体はテキストの文脈や意味を理解しませんが、注意深く設計されたパターンによってテキストのチャンキングを近似します。

コード例の正規表現では「バックトラック」を使用しているが、これはより意味のある意味でのセグメンテーションに不可欠である。例えば、文の途中で区切られることはない。しかし、深く入れ子になったリストやブロック参照、あるいは括弧のような構造では、バックトラックが困難になることがある。このようなケースを最適化するために、正規表現をさらに改良して、複数のレベルの入れ子をよりうまく扱えるようにし、入れ子を実用的なレベル、たとえば3レベルまでに制限することで、パフォーマンスを確保し、致命的なバックトラックを回避することができる。

このコードは非常に完全ではないかもしれないが、細部を最適化するために、この考えに従って、我々は効果がさらに改善の余地があることを予見することができます。ジーナ公式クラウドサービスは、開発者が使用することを経験するために分詞インターフェイスによって提供され、無料です。

 

パイソンバージョン

"""
// 1. Headings (Setext-style, Markdown, and HTML-style, with length constraints)
`(?:^(?:[#*=-]{1,${MAX_HEADING_LENGTH}}|\\w[^\\r\\n]{0,${MAX_HEADING_CONTENT_LENGTH}}\\r?\\n[-=]{2,${MAX_HEADING_UNDERLINE_LENGTH}}|<h[1-6][^>]{0,${MAX_HTML_HEADING_ATTRIBUTES_LENGTH}}>)[^\\r\\n]{1,${MAX_HEADING_CONTENT_LENGTH}}(?:</h[1-6]>)?(?:\\r?\\n|$))` +
"|" +
// New pattern for citations
`(?:\\[[0-9]+\\][^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}})` +
"""
heading_regex = regex.compile(
# 1. Headings (Setext-style, Markdown, and HTML-style, with length constraints)
rf"(?:^" # 开始匹配行的开头
rf"(?:^(?:[#*=-]{{1,{MAX_HEADING_LENGTH}}}" # Markdown 风格的标题
rf"|\w[^\r\n]{{0,{MAX_HEADING_CONTENT_LENGTH}}}\r?\n[-=]{{2,{MAX_HEADING_UNDERLINE_LENGTH}}}" # Setext 风格的标题
rf"|<h[1-6][^>]{{0,{MAX_HTML_HEADING_ATTRIBUTES_LENGTH}}}>[^\r\n]{{1,{MAX_HEADING_CONTENT_LENGTH}}}" # HTML 风格的标题
rf")"
rf"[^\r\n]{{1,{MAX_HEADING_CONTENT_LENGTH}}})" # 匹配标题内容
rf"(?:</h[1-6]>)?" # 可选的闭合标签
rf"(?:\r?\n|$)" # 行尾匹配
rf")"
rf"|"
rf"(?:\[[0-9]+\][^\r\n]{{1,{MAX_STANDALONE_LINE_LENGTH}}})"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 2. List items (bulleted, numbered, lettered, or task lists, including nested, up to three levels, with length constraints)
`(?:(?:^|\\r?\\n)[ \\t]{0,3}(?:[-*+•]|\\d{1,3}\\.\\w\\.|\\[[ xX]\\])[ \\t]+
(?:(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|
[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|
(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[\\r\\n]|$))|
(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])
(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))` +


`(?:(?:\\r?\\n[ \\t]{2,5}(?:[-*+•]|\\d{1,3}\\.\\w\\.|\\[[ xX]\\])[ \\t]+
(?:(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b
(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))
|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[\\r\\n]|$))
|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])
(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?)))` +


`{0,${MAX_NESTED_LIST_ITEMS}}(?:\\r?\\n[ \\t]{4,${MAX_LIST_INDENT_SPACES}}(?:[-*+•]|\\d{1,3}\\.\\w\\.|\\[[ xX]\\])[ \\t]+
(?:(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b
(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))
|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[\\r\\n]|$))
|(?:\\b[^\\r\\n]{1,${MAX_LIST_ITEM_LENGTH}}\\b(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])
(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?)))` +
`{0,${MAX_NESTED_LIST_ITEMS}})?)` +
"""
list_item_full_regex = regex.compile(
# 2. List items (bulleted, numbered, lettered, or task lists, including nested, up to three levels, with length constraints)
rf"(?:(?:^|\r?\n)[ \t]{{0,3}}(?:[-*+•]|\d{{1,3}}\.\w\.|\[[ xX]\])[ \t]+"
rf"(?:(?:\b[^\r\n]{{1,{MAX_LIST_ITEM_LENGTH}}}\b(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))"
rf"|(?:\b[^\r\n]{{1,{MAX_LIST_ITEM_LENGTH}}}\b(?=[\r\n]|$))"
rf"|(?:\b[^\r\n]{{1,{MAX_LIST_ITEM_LENGTH}}}\b(?=[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])"
rf"(?:.{{1,{LOOKAHEAD_RANGE}}}(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))?))"


rf"(?:(?:\r?\n[ \t]{{2,5}}(?:[-*+•]|\d{{1,3}}\.\w\.|\[[ xX]\])[ \t]+"
rf"(?:(?:\b[^\r\n]{{1,{MAX_LIST_ITEM_LENGTH}}}\b"
rf"(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))"
rf"|(?:\b[^\r\n]{{1,{MAX_LIST_ITEM_LENGTH}}}\b(?=[\r\n]|$))"
rf"|(?:\b[^\r\n]{{1,{MAX_LIST_ITEM_LENGTH}}}\b(?=[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])"
rf"(?:.{{1,{LOOKAHEAD_RANGE}}}(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))?)))"
rf"{{0,{MAX_NESTED_LIST_ITEMS}}}"


rf"(?:\r?\n[ \t]{{4,{MAX_LIST_INDENT_SPACES}}}(?:[-*+•]|\d{{1,3}}\.\w\.|\[[ xX]\])[ \t]+"
rf"(?:(?:\b[^\r\n]{{1,{MAX_LIST_ITEM_LENGTH}}}\b"
rf"(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))"
rf"|(?:\b[^\r\n]{{1,{MAX_LIST_ITEM_LENGTH}}}\b(?=[\r\n]|$))"
rf"|(?:\b[^\r\n]{{1,{MAX_LIST_ITEM_LENGTH}}}\b(?=[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])"
rf"(?:.{{1,{LOOKAHEAD_RANGE}}}(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))?)))"
rf"{{0,{MAX_NESTED_LIST_ITEMS}}})?)"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 3. Block quotes (including nested quotes and citations, up to three levels, with length constraints)
`(?:(?:^>(?:>|\\s{2,}){0,2}(?:
(?:\\b[^\\r\\n]{0,${MAX_BLOCKQUOTE_LINE_LENGTH}}\\b(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))
|(?:\\b[^\\r\\n]{0,${MAX_BLOCKQUOTE_LINE_LENGTH}}\\b(?=[\\r\\n]|$))
|(?:\\b[^\\r\\n]{0,${MAX_BLOCKQUOTE_LINE_LENGTH}}\\b(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])
(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])
(?=\\s|$))?))\\r?\\n?){1,${MAX_BLOCKQUOTE_LINES}})` +
"""


block_quotes_regex = regex.compile(
# 3. Block quotes (including nested quotes and citations, up to three levels, with length constraints)
rf"(?:(?:^>(?:>|\s{{2,}}){{0,2}}(?:"
rf"(?:\b[^\r\n]{{0,{MAX_BLOCKQUOTE_LINE_LENGTH}}}\b(?:[.!?…]|\.{3}|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))"
rf"|(?:\b[^\r\n]{{0,{MAX_BLOCKQUOTE_LINE_LENGTH}}}\b(?=[\r\n]|$))"
rf"|(?:\b[^\r\n]{{0,{MAX_BLOCKQUOTE_LINE_LENGTH}}}\b(?=[.!?…]|\.{3}|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])"
rf"(?:.{{1,{LOOKAHEAD_RANGE}}}(?:[.!?…]|\.{3}|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])"
rf"(?=\s|$))?))\r?\n?){{1,{MAX_BLOCKQUOTE_LINES}}})"
,
regex.MULTILINE | regex.UNICODE
)


# """
# // 4. Code blocks (fenced, indented, or HTML pre/code tags, with length constraints)
# `(?:(?:^|\\r?\\n)(?:\`\`\`|~~~)(?:\\w{0,${MAX_CODE_LANGUAGE_LENGTH}})?\\r?\\n[\\s\\S]{0,${MAX_CODE_BLOCK_LENGTH}}?(?:\`\`\`|~~~)\\r?\\n?` +
# `|(?:(?:^|\\r?\\n)(?: {4}|\\t)[^\\r\\n]{0,${MAX_LIST_ITEM_LENGTH}}(?:\\r?\\n(?: {4}|\\t)[^\\r\\n]{0,${MAX_LIST_ITEM_LENGTH}}){0,${MAX_INDENTED_CODE_LINES}}\\r?\\n?)` +
# `|(?:<pre>(?:<code>)?[\\s\\S]{0,${MAX_CODE_BLOCK_LENGTH}}?(?:</code>)?</pre>))` +
# """


code_blocks_regex = regex.compile(
# 4. Code blocks (fenced, indented, or HTML pre/code tags, with length constraints)
rf"(?:(?:^|\r?\n)(?:\`\`\`|~~~)(?:\w{{0,{MAX_CODE_LANGUAGE_LENGTH}}})?\r?\n[\s\S]{{0,{MAX_CODE_BLOCK_LENGTH}}}?(?:\`\`\`|~~~)\r?\n?"
rf"|(?:(?:^|\r?\n)(?: {4}|\t)[^\r\n]{{0,{MAX_LIST_ITEM_LENGTH}}}(?:\r?\n(?: {4}|\t)[^\r\n]{{0,{MAX_LIST_ITEM_LENGTH}}}){{0,{MAX_INDENTED_CODE_LINES}}}\r?\n?)"
rf"|(?:<pre>(?:<code>)?[\s\S]{{0,{MAX_CODE_BLOCK_LENGTH}}}?(?:</code>)?</pre>))"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 5. Tables (Markdown, grid tables, and HTML tables, with length constraints)
`(?:(?:^|\\r?\\n)(?:\\|[^\\r\\n]{0,${MAX_TABLE_CELL_LENGTH}}\\|(?:\\r?\\n\\|[-:]{1,${MAX_TABLE_CELL_LENGTH}}\\|){0,1}
(?:\\r?\\n\\|[^\\r\\n]{0,${MAX_TABLE_CELL_LENGTH}}\\|){0,${MAX_TABLE_ROWS}}` +
`|<table>[\\s\\S]{0,${MAX_HTML_TABLE_LENGTH}}?</table>))` +
"""


tables_regex = regex.compile(
# 5. Tables (Markdown, grid tables, and HTML tables, with length constraints)
rf"(?:(?:^|\r?\n)(?:\|[^\r\n]{{0,{MAX_TABLE_CELL_LENGTH}}}\|(?:\r?\n\|[-:]{{1,{MAX_TABLE_CELL_LENGTH}}}\|)?"
rf"(?:\r?\n\|[^\r\n]{{0,{MAX_TABLE_CELL_LENGTH}}}\|){{0,{MAX_TABLE_ROWS}}}"
rf"|<table>[\s\S]{{0,{MAX_HTML_TABLE_LENGTH}}}?</table>))"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 6. Horizontal rules (Markdown and HTML hr tag)
`(?:^(?:[-*_]){${MIN_HORIZONTAL_RULE_LENGTH},}\\s*$|<hr\\s*/?>)` +
"""


horizontal_rules_regex = regex.compile(
# 6. Horizontal rules (Markdown and HTML hr tag)
rf"(?:^(?:[-*_]){{{MIN_HORIZONTAL_RULE_LENGTH},}}\s*$|<hr\s*/?>)"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 10. Standalone lines or phrases (including single-line blocks and HTML elements, with length constraints)
`(?:^(?:<[a-zA-Z][^>]{0,${MAX_HTML_TAG_ATTRIBUTES_LENGTH}}>)?(?:(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?:[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?=[\\r\\n]|$))|(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?=[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))(?:</[a-zA-Z]+>)?(?:\\r?\\n|$))` +
"""


standalone_lines_regex = regex.compile(
# 10. Standalone lines or phrases (including single-line blocks and HTML elements, with length constraints)
rf"(?:^(?:<[a-zA-Z][^>]{{0,{MAX_HTML_TAG_ATTRIBUTES_LENGTH}}}>)?(?:(?:[^\r\n]{{1,{MAX_STANDALONE_LINE_LENGTH}}}(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))|(?:[^\r\n]{{1,{MAX_STANDALONE_LINE_LENGTH}}}(?=[\r\n]|$))|(?:[^\r\n]{{1,{MAX_STANDALONE_LINE_LENGTH}}}(?=[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?:.{{1,{LOOKAHEAD_RANGE}}}(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))?))(?:</[a-zA-Z]+>)?(?:\r?\n|$))"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 7. Sentences or phrases ending with punctuation (including ellipsis and Unicode punctuation)
`(?:(?:[^\\r\\n]{1,${MAX_SENTENCE_LENGTH}}(?:[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:[^\\r\\n]{1,${MAX_SENTENCE_LENGTH}}(?=[\\r\\n]|$))|(?:[^\\r\\n]{1,${MAX_SENTENCE_LENGTH}}(?=[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.\\.\\.|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))` +
"""


sentences_regex = regex.compile(
# 7. Sentences or phrases ending with punctuation (including ellipsis and Unicode punctuation)
rf"(?:(?:[^\r\n]{{1,{MAX_SENTENCE_LENGTH}}}(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))|(?:[^\r\n]{{1,{MAX_SENTENCE_LENGTH}}}(?=[\r\n]|$))|(?:[^\r\n]{{1,{MAX_SENTENCE_LENGTH}}}(?=[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?:.{{1,{LOOKAHEAD_RANGE}}}(?:[.!?…]|\.\.\.|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))?))"
,
regex.MULTILINE | regex.UNICODE
)


# // 8. Quoted text, parenthetical phrases, or bracketed content (with length constraints)
# "(?:" +
# `(?<!\\w)\"\"\"[^\"]{0,${MAX_QUOTED_TEXT_LENGTH}}\"\"\"(?!\\w)` +
# `|(?<!\\w)(?:['\"\`'"])[^\\r\\n]{0,${MAX_QUOTED_TEXT_LENGTH}}\\1(?!\\w)` +
# `|\\([^\\r\\n()]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}(?:\\([^\\r\\n()]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}\\)[^\\r\\n()]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}){0,${MAX_NESTED_PARENTHESES}}\\)` +
# `|\\[[^\\r\\n\\[\\]]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}(?:\\[[^\\r\\n\\[\\]]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}\\][^\\r\\n\\[\\]]{0,${MAX_PARENTHETICAL_CONTENT_LENGTH}}){0,${MAX_NESTED_PARENTHESES}}\\]` +
# `|\\$[^\\r\\n$]{0,${MAX_MATH_INLINE_LENGTH}}\\$` +
# `|\`[^\`\\r\\n]{0,${MAX_MATH_INLINE_LENGTH}}\`` +
# ")" +


quoted_regex = regex.compile(
# 8. Quoted text, parenthetical phrases, or bracketed content (with length constraints)
rf"(?:"
rf"(?<!\w)\"\"\"[^\"]{{0,{MAX_QUOTED_TEXT_LENGTH}}}\"\"\"(?!\w)"
rf"|(?<!\w)(?:['\"\`\'])[^\r\n]{{0,{MAX_QUOTED_TEXT_LENGTH}}}\\1(?!\w)"
rf"|\([^\r\n()]{{0,{MAX_PARENTHETICAL_CONTENT_LENGTH}}}(?:\([^\r\n()]{{0,{MAX_PARENTHETICAL_CONTENT_LENGTH}}}\)[^\r\n()]{{0,{MAX_PARENTHETICAL_CONTENT_LENGTH}}}){{0,{MAX_NESTED_PARENTHESES}}}\)"
rf"|\[[^\r\n\[\]]{{0,{MAX_PARENTHETICAL_CONTENT_LENGTH}}}(?:\[[^\r\n\[\]]{{0,{MAX_PARENTHETICAL_CONTENT_LENGTH}}}\][^\r\n\[\]]{{0,{MAX_PARENTHETICAL_CONTENT_LENGTH}}}){{0,{MAX_NESTED_PARENTHESES}}}\]"
rf"|\$[^\r\n$]{{0,{MAX_MATH_INLINE_LENGTH}}}\$"
rf"|\"[^\"\r\n]{{0,{MAX_MATH_INLINE_LENGTH}}}\""
rf")"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 9. Paragraphs (with length constraints)
`(?:(?:^|\\r?\\n\\r?\\n)(?:<p>)?(?:(?:[^\\r\\n]{1,${MAX_PARAGRAPH_LENGTH}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:[^\\r\\n]{1,${MAX_PARAGRAPH_LENGTH}}(?=[\\r\\n]|$))|(?:[^\\r\\n]{1,${MAX_PARAGRAPH_LENGTH}}(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))(?:</p>)?(?=\\r?\\n\\r?\\n|$))` +
"""


paragraphs_regex = regex.compile(
# 9. Paragraphs (with length constraints)
rf"(?:(?:^|\r?\n\r?\n)(?:<p>)?(?:(?:[^\r\n]{{1,{MAX_PARAGRAPH_LENGTH}}}(?:[.!?…]|\.{3}|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))|(?:[^\r\n]{{1,{MAX_PARAGRAPH_LENGTH}}}(?=[\r\n]|$))|(?:[^\r\n]{{1,{MAX_PARAGRAPH_LENGTH}}}(?=[.!?…]|\.{3}|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?:.{{1,{LOOKAHEAD_RANGE}}}(?:[.!?…]|\.{3}|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))?))(?:</p>)?(?=\r?\n\r?\n|$))"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 11. HTML-like tags and their content (including self-closing tags and attributes, with length constraints)
`(?:<[a-zA-Z][^>]{0,${MAX_HTML_TAG_ATTRIBUTES_LENGTH}}(?:>[\\s\\S]{0,${MAX_HTML_TAG_CONTENT_LENGTH}}?</[a-zA-Z]+>|\\s*/>))` +
"""


HTML_like_tags_regex = regex.compile(
# 11. HTML-like tags and their content (including self-closing tags and attributes, with length constraints)
rf"(?:<[a-zA-Z][^>]{{0,{MAX_HTML_TAG_ATTRIBUTES_LENGTH}}}(?:>[\s\S]{{0,{MAX_HTML_TAG_CONTENT_LENGTH}}}?</[a-zA-Z]+>|\s*/>))"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 12. LaTeX-style math expressions (inline and block, with length constraints)
`(?:(?:\\$\\$[\\s\\S]{0,${MAX_MATH_BLOCK_LENGTH}}?\\$\\$)|(?:\\$[^\\$\\r\\n]{0,${MAX_MATH_INLINE_LENGTH}}\\$))` +
"""


LaTeX_style_math_regex = regex.compile(
# 12. LaTeX-style math expressions (inline and block, with length constraints)
rf"(?:(?:\$\$[\s\S]{{0,{MAX_MATH_BLOCK_LENGTH}}}?\$\$)|(?:\$[^\$\r\n]{{0,{MAX_MATH_INLINE_LENGTH}}}\$))"
,
regex.MULTILINE | regex.UNICODE
)


"""
// 14. Fallback for any remaining content (with length constraints)
`(?:(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))|(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?=[\\r\\n]|$))|(?:[^\\r\\n]{1,${MAX_STANDALONE_LINE_LENGTH}}(?=[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?:.{1,${LOOKAHEAD_RANGE}}(?:[.!?…]|\\.{3}|[\\u2026\\u2047-\\u2049]|[\\p{Emoji_Presentation}\\p{Extended_Pictographic}])(?=\\s|$))?))` +
"""


fallback_regex = regex.compile(
# 14. Fallback for any remaining content (with length constraints)
rf"(?:(?:[^\r\n]{{1,{MAX_STANDALONE_LINE_LENGTH}}}(?:[.!?…]|\.{3}|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))|(?:[^\r\n]{{1,{MAX_STANDALONE_LINE_LENGTH}}}(?=[\r\n]|$))|(?:[^\r\n]{{1,{MAX_STANDALONE_LINE_LENGTH}}}(?=[.!?…]|\.{3}|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?:.{{1,{LOOKAHEAD_RANGE}}}(?:[.!?…]|\.{3}|[\u2026\u2047-\u2049]|[\p{{Emoji_Presentation}}\p{{Extended_Pictographic}}])(?=\s|$))?))"
,
regex.MULTILINE | regex.UNICODE
)

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