From a bug report, but just received:
you can't affix candles to the candelabrum while underwater, because the
underwater check (can't light candles while underwater) is made too soon.
If you somehow managed to get a lit lamp, candle, or candelabrum while
underwater, you wouldn't be able to extinguish it for same reason. The
bug report included a URL for a fix, but I didn't look at that. This
changes use_candle() to rely on use_lamp() for underwater handling, and
changes use_lamp() and use_candelabrum() to check for extinguishing
before making the underwater check.
8465f87d2f