--- Vulnerable EscapeShell (e76c573^) ---
      std::regex_replace(std::string(input), std::regex("'"), "\\'");
  escaped = "'" + escaped + "'";
  // Remove excessive quote pairs and handle edge cases
--- Fixed EscapeShell (e76c573) ---
      std::regex_replace(std::string(input), std::regex("'"), "'\"'\"'");
  escaped = "'" + escaped + "'";
  // Remove excessive quote pairs and handle edge cases