Function is_designated_for_track_carving

plugins/dig.cpp:2386–2389

}

static bool is_designated_for_track_carving(const designation &designation) {
    const df::tile_occupancy &occ = designation.to;
    return occ.bits.carve_track_east || occ.bits.carve_track_north || occ.bits.carve_track_south || occ.bits.carve_track_west;
}

static bool is_designated_for_digging(const designation &designation) {
    return designation.td.bits.dig != df::tile_dig_designation::No;