When confused gold detection finds a door trap or a chest trap, it puts a bear trap glyph/tile on the map at that location. (They disappear once they're within sight.) Those should be given their own glyphs so that they can have their own tiles, but this doesn't do that. What it does do is describe such fake bear traps as "trapped door" or "trapped chest" when examined with far-look. The '^' command--if used while blind so that '^' hasn't disappeared yet--needs to catch up: it says "I can't see a trap there" when the adjacent '^' is a fake bear trap.
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