#!/usr/bin/env bash
# remap - Byte substitution transform (bijective)
# v1.4.0 (2025-09-02)
#
# Applies bijective byte-level substitution using a
# built-in mapping table. Every input byte maps to
# exactly one output byte. Deterministic and reversible.
#
# Usage: remap [options]  output
#   -t FILE    Use alternate substitution table
#   -r         Reverse mapping
#
# Part of the rf0 analysis toolkit.
# Gregory Alan, 2025

# See also:
#   /home/greg/bin/align  https://gregoryalan.com/home/greg/bin/align
#   /home/greg/bin/shift  https://gregoryalan.com/home/greg/bin/shift