Daniel Mayer wrote:
Why not just copy the source HTML of a reference stable revision at the time of marking and serve that? That way whatever was in the template at the time of the snapshot will be displayed as the stable HTML copy.
Copying the state of the template at the time sounds like the most foolproof solution, but it will have to be a copy of the wikitext rather than an HTML copy if we want to keep all our various user-configurable display features (e.g. date and link formatting).
-Mark