LUA_TDEADKEY       65 lib/lua/lgc.c      setttype(gkey(n), LUA_TDEADKEY);  /* dead key; remove it */
LUA_TDEADKEY      186 lib/lua/lgc.c      lua_assert(ttype(gkey(n)) != LUA_TDEADKEY || ttisnil(gval(n)));
LUA_TDEADKEY      148 lib/lua/ltable.c             (ttype(gkey(n)) == LUA_TDEADKEY && iscollectable(key) &&