remember when i wrote
[matches [regexp-match #px"^((.)\\2*)(\\s*\\{(?:\\\\\\}\\\\|[^}])*(?:\\\\\\}\\\\|[^\\\\}]|\\\\(?!\\}\\\\))\\}\\s*)?(.*?)\\2*(\\s*\\{(?:\\\\\\}\\\\|[^}])*(?:\\\\\\}\\\\|[^\\\\}]|\\\\(?!\\}\\\\))\\})?\\s*$" trimmed]]
i long for those days