forked from extern/nushell
* Add some docs for meta.rs * add better explanation for Span merging * Add some doc tests - not sure how to get them to run * get rid of doc comments for the temporary method * add doc test for is_unknown * fmt
* Add some docs for meta.rs * add better explanation for Span merging * Add some doc tests - not sure how to get them to run * get rid of doc comments for the temporary method * add doc test for is_unknown * fmt