niveum/packages/256color.nix

{
  writers,
}:
writers.writeDashBin "256color" ''
  pl() {
    for i in $(seq $1 $(expr $2 - 1)); do
      printf '\e[38;5;%sm%03i\e[m ' $i $i
    done
    printf '\e[38;5;%sm%03i\e[m\n' $2 $2
  }

  p() {
    printf '\e[38;5;%sm%03i\e[m ' $1 $1
  }

  p6x6() {
    for i in $(seq 0 5); do
      for j in $(seq 0 5); do
        p $(expr $1 + $i + $j \* 6)
      done
      echo
    done
  }

  pl 0 7
  pl 8 15

  p6x6 16
  p6x6 52
  p6x6 88
  p6x6 124
  p6x6 160
  p6x6 196

  pl 232 243
  pl 244 255
''