transpose is not an involution

[amtoine]

• run

  ls | nu_plugin_explore

• press t to transpose the table
• press t again, nothing happens

this boils down to the fact that, in Nushell, $table | transpose | transpose and $record | transpose | transpose are not the same as table and $record respectively, you'd have to define inverse commands such as

use std assert

def "transpose inv-record" []: {
    transpose --header-row | into record
}

def "transpose inv-table" []: {
    transpose --header-row
}

assert equal ($nu | transpose | transpose inv-record) $nu
assert equal (ls | transpose | transpose inv-table) (ls)