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Merge pull request #13567 from tth37/fix_katex_chinese_delimiters
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fix(katex): Allow CJK characters adjacent to math delimiters
This commit is contained in:
Tim Jaeryang Baek 2025-05-08 14:41:16 +04:00 committed by GitHub
commit a6d6c928d9
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1 changed files with 12 additions and 3 deletions
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15
src/lib/utils/marked/katex-extension.ts
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@ -10,6 +10,10 @@ const DELIMITER_LIST = [
{ left: '\\begin{equation}', right: '\\end{equation}', display: true }
];
// Defines characters that are allowed to immediately precede or follow a math delimiter.
const ALLOWED_SURROUNDING_CHARS =
'\\s?。，、；!-\\/:-@\\[-`{-~\\p{Script=Han}\\p{Script=Hiragana}\\p{Script=Katakana}\\p{Script=Hangul}';
// const DELIMITER_LIST = [
// { left: '$$', right: '$$', display: false },
// { left: '$', right: '$', display: false },
@ -44,10 +48,13 @@ function generateRegexRules(delimiters) {
// Math formulas can end in special characters
const inlineRule = new RegExp(
`^(${inlinePatterns.join('|')})(?=[\\s?。，!-\/:-@[-\`{-~]|$)`,
`^(${inlinePatterns.join('|')})(?=[${ALLOWED_SURROUNDING_CHARS}]|$)`,
'u'
);
const blockRule = new RegExp(
`^(${blockPatterns.join('|')})(?=[${ALLOWED_SURROUNDING_CHARS}]|$)`,
'u'
);
const blockRule = new RegExp(`^(${blockPatterns.join('|')})(?=[\\s?。，!-\/:-@[-\`{-~]|$)`, 'u');
return { inlineRule, blockRule };
}
@ -91,7 +98,9 @@ function katexStart(src, displayMode: boolean) {
// Check if the delimiter is preceded by a special character.
// If it does, then it's potentially a math formula.
const f = index === 0 || indexSrc.charAt(index - 1).match(/[\s?。，!-\/:-@[-`{-~]/);
const f =
index === 0 ||
indexSrc.charAt(index - 1).match(new RegExp(`[${ALLOWED_SURROUNDING_CHARS}]`, 'u'));
if (f) {
const possibleKatex = indexSrc.substring(index);