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#!/usr/bin/env bash
set -ueo pipefail
# Callers can test for support via "with-tty true".
usage() { echo 'Usage: with-tty command [arg ...]'; }
misuse() { usage 1>&2; exit 2; }
case "$OSTYPE" in
netbsd) exit 2 ;; # https://gnats.netbsd.org/56254
esac
# script(1), originating in 3.0BSD, is not specified by POSIX and has
# varying forms.
# FreeBSD 15: script [-aeFfkqrw] [-t time] [file [command ...]]
# FreeBSD 14: script [-aeFfkqr] [-t time] [file [command ...]]
# FreeBSD 13: script [-aefkqr] [-F pipe] [-t time] [file [command ...]]
# FreeBSD 12: script [-adfkpqr] [-F pipe] [-t time] [file [command ...]]
# FreeBSD 11: script [-adfkpqr] [-F pipe] [-t time] [file [command ...]]
# FreeBSD 10: script [-adfkpqr] [-t time] [file [command ...]]
# FreeBSD 8: script [-akq] [-t time] [file [command ...]]
# FreeBSD 3.0: script [-a] [-k] [-q] [-t time] [file] [command ...]
# FreeBSD 1.0: script [-a] [file]
# Linux ?: script [options] [file] [-- command [argument...]]
# but also "-c, --command command", and -eq
# macos ?: script [-aeFkqr] [-t time] [file [command ...]]
# NetBSD 10: script [-adefpqr] [-c command] [file]
# NetBSD 6-9: script [-adfpqr] [-c command] [file]
# NetBSD 5: script [-adpr] [file]
# Try variants; insist on exit with child status/ (-e behavior).
if script -qec true /dev/null; then
script -qec "$(printf ' %q' "$@")" /dev/null
elif script -q -c true /dev/null; then
if script -q -c false /dev/null; then # -e behavior?
printf '%q ignores child exit status\n' "$(command -v script)" 1>&2
exit 2
fi
script -q -c "$(printf ' %q' "$@")" /dev/null
elif script -q /dev/null true; then
if script -q /dev/null false; then # -e behavior?
printf '%q ignores child exit status\n' "$(command -v script)" 1>&2
exit 2
fi
script -q /dev/null "$@"
else
rc=0
cmd="$(command -v script)" || rc=$?
if test "$rc" -eq 0; then
printf 'Unsupported script command: %q\n' "$cmd" 1>&2
else
echo 'No script command' 1>&2
fi
exit 2
fi
case "$OSTYPE" in
netbsd)
# On NetBSD, the top-level script(1) process exits when read()
# reports EOF on stdin; this happens when running tests with
# /dev/null as stdin. As a workaround, wait after script, so
# that the command will have finished.
sleep 5
;;
esac
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