data_in_finite_line (&di, ls_c_str (&line), ls_length (&line),
var_spec->fc, var_spec->lc);
di.v = case_data_rw (c, var_spec->fv);
data_in_finite_line (&di, ls_c_str (&line), ls_length (&line),
var_spec->fc, var_spec->lc);
di.v = case_data_rw (c, var_spec->fv);