#!/bin/sh
# bash-compat - a-Shell POSIX sh compatibility launcher.
#
# GNU bash is not bundled with Terminal.  This launcher provides the common
# `bash script` / `bash -c 'command'` interface on top of a-Shell's sh so
# simple plugin scripts work.  If a real bash is installed at
# $PREFIX/bin/bash, the prefix PATH takes precedence over this launcher.

if [ "${1:-}" = "--version" ] || [ "${1:-}" = "-version" ]; then
    echo "bash-compat 1.0 (a-Shell POSIX sh; GNU bash is not bundled)"
    exit 0
fi

if [ "${1:-}" = "-c" ]; then
    shift
    if [ $# -eq 0 ]; then
        echo "bash-compat: -c requires a command" >&2
        exit 2
    fi
    command="$1"
    shift
    sh -c "$command" "$@" 
    exit $?
fi

if [ $# -gt 0 ] && [ -f "$1" ]; then
    sh "$@"
    exit $?
fi

if [ $# -eq 0 ]; then
    echo "bash-compat: a-Shell POSIX sh.  GNU bash-specific syntax is not supported." >&2
    sh -s
    exit $?
fi

sh "$@"
exit $?