Lotus CIandClaude Opus 5.5
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Steam double-encodes its meta tags (`&quot;`), so after Synapse's single decode the card showed "The "Perpetual Testing Initiative" …". The preview's og:title / og:description / og:site_name are now decoded once where the preview is fetched, so every card (about 20 read those fields directly) gets clean text. Rendered as React text only, so decoding can't inject markup; exactly one level is decoded. Verified on the Portal 2 store link: "The \"Perpetual Testing Initiative\" has been expanded…", no literal " left on the page. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA
39 lines
1.1 KiB
TypeScript
39 lines
1.1 KiB
TypeScript
const NAMED: Record<string, string> = {
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amp: '&',
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lt: '<',
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gt: '>',
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quot: '"',
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apos: "'",
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nbsp: ' ',
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hellip: '…',
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mdash: '—',
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ndash: '–',
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lsquo: '‘',
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rsquo: '’',
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ldquo: '“',
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rdquo: '”',
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trade: '™',
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copy: '©',
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reg: '®',
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};
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/**
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* Decode HTML character references left in plain text. Link previews need it:
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* some sites double-encode their meta tags (Steam: `&quot;`), so after
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* Synapse decodes once the card showed a literal `"`. The result is only
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* ever rendered as React text, so decoding can't inject markup.
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*/
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export const decodeHtmlEntities = (text: string): string => {
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if (!text.includes('&')) return text;
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return text.replace(/&(#x[0-9a-f]+|#[0-9]+|[a-z]+);/gi, (match, ref: string) => {
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if (ref[0] === '#') {
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const code =
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ref[1] === 'x' || ref[1] === 'X' ? parseInt(ref.slice(2), 16) : parseInt(ref.slice(1), 10);
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return Number.isFinite(code) && code > 0 && code <= 0x10ffff
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? String.fromCodePoint(code)
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: match;
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}
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return NAMED[ref.toLowerCase()] ?? match;
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});
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};
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