gap option to a numeric in native units inside the current
measurement viewport. NULL → falls back to padding_native so the
visible leader-tip gap matches the spacing between label and quantity.
A grid::unit value converts to native; a bare numeric is interpreted
as lines (same convention as eulerr_options()$padding).Resolve a gap option to a numeric in native units inside the current
measurement viewport. NULL → falls back to padding_native so the
visible leader-tip gap matches the spacing between label and quantity.
A grid::unit value converts to native; a bare numeric is interpreted
as lines (same convention as eulerr_options()$padding).
resolve_gap_native(gap, padding_native)