Function processNode

scripts/injectGptButton.js:231–586

(node, indent = 0, inListItem = false, trimText = false)

        // Process all child nodes
        const processNode = (node, indent = 0, inListItem = false, trimText = false) => {
            // Skip citation pills and other metadata elements
            if (node.nodeType === Node.ELEMENT_NODE) {
                if (node.hasAttribute('data-testid') && node.getAttribute('data-testid') === 'webpage-citation-pill') {
                    return;
                }
                // Skip other common ChatGPT UI elements
                if (node.classList && (
                    node.classList.contains('citation-pill') ||
                    node.classList.contains('browse-link')
                )) {
                    return;
                }
            }

            // Handle display formulas (block level)
            if (node.classList && node.classList.contains('katex-display')) {
                const mathML = node.querySelector('annotation[encoding="application/x-tex"]');
                if (mathML) {
                    result += '\n$$\n' + mathML.textContent.trim() + '\n$$\n';
                }
                return;
            }

            // Handle inline formulas
            if (node.classList && node.classList.contains('katex') && !node.closest('.katex-display')) {
                const mathML = node.querySelector('annotation[encoding="application/x-tex"]');
                if (mathML) {
                    result += '$' + mathML.textContent.trim() + '$';
                }
                return;
            }

            // Handle headings
            if (node.tagName && /^H[1-6]$/.test(node.tagName)) {
                const level = node.tagName[1];
                const headingMark = '#'.repeat(parseInt(level));
                result += '\n' + headingMark + ' ';
                node.childNodes.forEach(child => processNode(child, indent, false));
                result += '\n\n';
                return;
            }

            // Handle paragraphs
            if (node.tagName === 'P') {
                // In list items, trim leading/trailing whitespace from text nodes
                if (inListItem) {
                    const childNodes = Array.from(node.childNodes);

                    // Find first and last non-whitespace-only nodes
                    let firstIdx = -1;
                    let lastIdx = -1;
                    for (let i = 0; i < childNodes.length; i++) {
                        const child = childNodes[i];
                        if (child.nodeType !== Node.TEXT_NODE || child.textContent.trim()) {
                            if (firstIdx === -1) firstIdx = i;
                            lastIdx = i;
                        }