git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6889 c06c8d41-db1a-0410-9941-cceddc491573
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const dungeon_feature_type old_grid = (from_above) ? DNGN_FLOOR : grd(p);
const dungeon_feature_type old_grid = (from_above) ? DNGN_FLOOR : grd(you.pos());
const dungeon_feature_type old_grid =
(from_above) ? DNGN_FLOOR : grd(you.pos());