Function units_set_add_remove

plugins/burrow.cpp:649–665

}

static void units_set_add_remove(lua_State *L, bool do_set, bool enable) {
    df::burrow *target = get_burrow(L, 1);
    if (!target) {
        luaL_argerror(L, 1, "invalid burrow specifier or burrow not found");
        return;
    }

    if (do_set)
        Burrows::clearUnits(target);

    lua_pushnil(L);   // first key
    while (lua_next(L, 2)) {
        if (auto burrow = get_burrow(L, -1))
            copyUnits(target, burrow, enable);
        lua_pop(L, 1);  // remove value, leave key
    }
}

static int burrow_units_set(lua_State *L) {
    color_ostream *out = Lua::GetOutput(L);