On 6/30/14, Adam Wight <awight(a)wikimedia.org> wrote:
Fundraising would like the ability to snapshot or retrieve a CentralNotice
banner exactly as it was rendered at an earlier time, including the old
revisions of templates, which is tricky and AFAICT not supported by
extension changes, etc.
But if you want to just implement this just in central notice in a
limited way, take a look at BeforeParserFetchTemplateAndtitle hook,
the setTemplateCallback method of ParserOptions, and the
BeforeParserFetchFileAndTitle hook (The $options array for that hook
can set a time and sha1 key).