Selects the {nr} match item, as set with a |:match|, |:2match| or |:3match| command. Return a |List| with two elements: The name of the highlight group used The pattern used. When {nr} is not 1, 2 or 3 returns an empty |List|. When there is no match item set returns ['', '']. This is useful to save and restore a |:match|. Highlighting matches using the |:match| commands are limited to three matches. |matchadd()| does not have this limitation. Can also be used as a |method|: GetMatch()->matcharg()