blind-rotate-90


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#!/bin/sh

set -e

if ! test $# = 0; then
	if test "$1" = --; then
		shift 1
	fi
	if ! test $# = 0; then
		printf 'usage: %s\n' "$0" >&2
		exit 1
	fi
fi

transpose="$(printf '%s\n' "$0" | tr '/\n' '\n/' | sed '$s/^.*$/blind-transpose\//' | tr '/\n' '\n/')"
flop="$(     printf '%s\n' "$0" | tr '/\n' '\n/' | sed '$s/^.*$/blind-flop\//'      | tr '/\n' '\n/')"

"$transpose" | "$flop"