Allow missingValueAction to be specified for the sortspec string -
function yaz_sort_spec. By default, the missing value action is null.
Use ! to specify "abort". Use = followed by stringvalue to specify default
Allow missingValueAction to be specified for the sortspec string -
function yaz_sort_spec. By default, the missing value action is null.
Use ! to specify "abort". Use = followed by stringvalue to specify default