One possible solution... if the first key=value pair ends with a CR then likely it's an expanded template. If not, likely other CRs are stray and it could be collapsed. The rationale is because editors who care about expanded templates will make sure the first key|value has a CR after it .. but a template where the first key|value doesn't have a CR then editors are less likely to be concerned and safer to collapse since that is the more common layout.