# Optimisation: building recentchanges means calculating lots of
# links. Memoizing htmllink speeds it up a lot (can't be memoized
# during page builds as the return values may change, but they
# Optimisation: building recentchanges means calculating lots of
# links. Memoizing htmllink speeds it up a lot (can't be memoized
# during page builds as the return values may change, but they