edit:add-var archiver~ [@argv]{
  use str
  help = {
    echo "Usage : archiver [(-zlxgb)] <file to compress>"
    return
  }
  if (or (== (count $argv) 0) (eq $argv[0] -h)) {
    $help
  }
  local:format = zst
  local:o = $argv[0]
  if (and (str:has-prefix $o -) (> (count $o) 1)) {
    o = $o[1]
    local:m = [
      &z=zst
      &l=lz4
      &x=xz
      &g=gz
      &b=bz2
    ]
    if (not (has-key $m $o)) {
      $help
    }
    format = $m[$o]
    argv = $argv[1..]
  }
  if (== (count $argv) 0) {
    $help
  }
  peach [f]{
    local:f = $f
    if (eq $f[-1] /) {
      f = $f[..-1]
    }
    e:arc archive $f'.tar.'$format $f
    echo "'"$f"'" archivé
  } $argv
}