this repo has no description
Replace lookbehind regex
because older Safari doesn't support it
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src/components/compose.jsx
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src/components/compose.jsx
···
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// https://github.com/mastodon/mastodon/blob/c03bd2a238741a012aa4b98dc4902d6cf948ab63/app/models/account.rb#L69
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const USERNAME_RE = /[a-z0-9_]+([a-z0-9_.-]+[a-z0-9_]+)?/i;
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const MENTION_RE = new RegExp(
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`(?<![=\\/\\w])@((${USERNAME_RE.source})(?:@[\\w.-]+[\\w]+)?)`,
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`(^|[^=\\/\\w])(@${USERNAME_RE.source}(?:@[\\w.-]+[\\w]+)?)`,
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'ig',
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);
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// AI-generated, all other regexes are too complicated
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const HASHTAG_RE = new RegExp(
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`(?<![=\\/\\w])#([a-z0-9_]+([a-z0-9_.-]+[a-z0-9_]+)?)(?![\\/\\w])`,
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`(^|[^=\\/\\w])(#[a-z0-9_]+([a-z0-9_.-]+[a-z0-9_]+)?)(?![\\/\\w])`,
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'ig',
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);
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// https://github.com/mastodon/mastodon/blob/23e32a4b3031d1da8b911e0145d61b4dd47c4f96/app/models/custom_emoji.rb#L31
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const SHORTCODE_RE_FRAGMENT = '[a-zA-Z0-9_]{2,}';
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const SCAN_RE = new RegExp(
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`(?<=[^A-Za-z0-9_:\\n]|^):(${SHORTCODE_RE_FRAGMENT}):(?=[^A-Za-z0-9_:]|$)`,
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`([^A-Za-z0-9_:\\n]|^)(:${SHORTCODE_RE_FRAGMENT}:)(?=[^A-Za-z0-9_:]|$)`,
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'g',
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);
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···
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html = html
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.replace(urlRegexObj, '$2<mark class="compose-highlight-url">$3</mark>') // URLs
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.replace(MENTION_RE, '<mark class="compose-highlight-mention">$&</mark>') // Mentions
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.replace(HASHTAG_RE, '<mark class="compose-highlight-hashtag">#$1</mark>') // Hashtags
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.replace(MENTION_RE, '$1<mark class="compose-highlight-mention">$2</mark>') // Mentions
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.replace(HASHTAG_RE, '$1<mark class="compose-highlight-hashtag">$2</mark>') // Hashtags
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.replace(
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SCAN_RE,
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'<mark class="compose-highlight-emoji-shortcode">$&</mark>',
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'$1<mark class="compose-highlight-emoji-shortcode">$2</mark>',
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); // Emoji shortcodes
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return html + leftoverHTML;