use str

fn complete {|command @rest|
  (external $command) __complete $@rest 2>/dev/null | each {|line|
    if (str:has-prefix $line ":") {
      continue
    }

    var @result = (str:split &max=2 "\t" $line)
    var name = $result[0]
    var description = $name
    if (> (count $result) 1) {
      set description = $description' ('$result[1]')'
    }
    edit:complex-candidate $result[0] &display=$description &code-suffix=' '
  }
}