if status is-interactive

if command -sq bsdtar
  alias mz 'bsdtar -a -cf'

  alias_if_not unzip bsdtar -xf
  alias_if_not unrar bsdtar -xf
end

# If we have more than one CPU core, use threaded uncompression.
if command -sq nproc
  if test (nproc) -gt 1
    alias_if xz xz -T 0
    alias_if unxz unxz -T 0
    alias_if unpigz gunzip
    alias_if parunzip unzip
    alias_if pbzip2 bzip2
    alias_if bzip3 bzip3 -j (nproc)
  end
end

end