Not every court has, mind you: most just ask for clarity and consistency. British Columbia's Court of Appeal has said to use the 7th edition of the McGill Guide (the controversial one that did away with the punctuation people had come to know and – oddly – love), but then asks for periods and commas in everything but neutral citations.
The court's directive does say to dispense with the name of an online provider where it's one of the big ones (CanLII, Quicklaw or Westlaw Canada) and the date you consulted the source, which is sensible; this never really added anything useful.
For the state of play on who has officially adopted McGill 7.0, see http://lawjournal.mcgill.ca/citeguide.php
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