current document + const idx = docText.indexOf(comment.selectedText); + if (idx !== -1) { + // Found the text - highlight it + const from = idx; + const to = idx + comment.selectedText.length; + if (from >= 0 && to <= doc.length && from < to) { + decorationsArray.push({ + from, + to, + decoration: Decoration.mark({ + class: 'sidenote-highlight', + attributes: { + 'data-comment-timestamp': comment.timestamp.toString() + } + }) + }); + highlightFound = true; + } } - } else { - // For non-orphaned comments, highlight the original text - const line = doc.line(comment.startLine + 1); - const from = line.from + comment.startChar; - const to = line.from + comment.endChar; - - if (from >= 0 && to <= doc.length && from < to) { - decorationsArray.push({ - from, - to, - decoration: Decoration.mark({ - class: 'sidenote-highlight', - attributes: { - 'data-comment-timestamp': comment.timestamp.toString() + } + + // If exact text not found and comment has hash, try hash-based search + if (!highlightFound && comment.selectedTextHash && !comment.isOrphaned) { + const lines = docText.split('\n'); + for (let lineNum = 0; lineNum < lines.length; lineNum++) { + const line = lines[lineNum]; + for (let startChar = 0; startChar < line.length; startChar++) { + const candidate = line.substring(startChar, startChar + comment.selectedText.length); + if (candidate.length === comment.selectedText.length) { + // Simple hash check using existing hash function + let hash = 0; + for (let i = 0; i < candidate.length; i++) { + hash = ((hash << 5) - hash) + candidate.charCodeAt(i); + } + if (Math.abs(hash).toString(16) === comment.selectedTextHash.substring(0, 8)) { + // Approximate hash match found + try { + const line_obj = doc.line(lineNum + 1); + const from = line_obj.from + startChar; + const to = from + comment.selectedText.length; + if (from >= 0 && to <= doc.length && from < to) { + decorationsArray.push({ + from, + to, + decoration: Decoration.mark({ + class

SideNote