Query the vanished-masking mode (used by the registration path to
tag non-layer diagnostics with has_missing for the NetCDF writer).
pure function diag_mask_vanished_is_on() result(on) !! Query the vanished-masking mode (used by the registration path to !! tag non-layer diagnostics with `has_missing` for the NetCDF writer). logical :: on on = diag_mask_vanished end function diag_mask_vanished_is_on