shellspec/shellspec

#!/bin/sh

set -eu

# gosh: https://github.com/mvdan/sh v3.0.2 fails
umask >/dev/null

# mrsh: https://github.com/emersion/mrsh WIP 657ea07 fails
( false ) 2>/dev/null && exit 1

if ! (set -eu --; : "$@") 2>/dev/null; then
  echo "SHELLSPEC_DEFECT_EMPTYPARAMS=1"
fi

redefine() { echo redefine; }
if [ "$(redefine() { :; }; redefine)" = "redefine" ]; then
  # ksh
  echo "SHELLSPEC_DEFECT_REDEFINE=1"
fi

if ! (false() { :; }; false) 2>/dev/null; then
  # busybox 1.1.3
  echo "SHELLSPEC_DEFECT_BUILTIN=1"
fi

# shellcheck disable=SC2034,SC2234
if ( [ "$( ( readonly value=123 ) 2>&1 )" ] ) 2>/dev/null; then
  # pdksh 5.2.14 (debian-2.2), ksh 93q, ksh 93r
  # busybox 1.15.3, busybox 1.19.4
  echo "SHELLSPEC_DEFECT_READONLY=1"
fi

# shellcheck disable=SC2154
if (set -u; unset v ||:; : "$v") 2>/dev/null; then
  # posh 0.10.2
  echo "SHELLSPEC_DEFECT_SHELLFLAG=1"
fi

if [ ! "$(errexit() { set -e; false; :; }; errexit && echo OK)" ]; then
  # bosh 2020/04/10
  echo "SHELLSPEC_DEFECT_ERREXIT=1"
fi

# Workaround for zsh 4.2.5
zshexit() { ( exit 1 ); }
if [ "${ZSH_VERSION:-}" ] && zshexit; then
  echo "SHELLSPEC_DEFECT_ZSHEXIT=1"
fi

set +e
(set -e; false; :) 2>/dev/null
# shellcheck disable=SC2181
if [ $? -eq 0 ] && [ ! "${POSH_VERSION:-}" ]; then
  # bosh <= 2020/03/25
  echo "SHELLSPEC_DEFECT_BOSHEXIT=1"
fi
set -e

# Workaround for posh 0.8.5
if [ ! "$(kill -l 2 2>/dev/null)" = "INT" ]; then
  # Workaround for procps-ng kill
  if [ ! "$(kill -l2 2>/dev/null)" = "INT" ]; then
    echo "SHELLSPEC_DEFECT_SIGNAL=1"
  fi
fi

set +e
(set -e; subshell() { return 2; }; subshell) 2>/dev/null
if [ $? -eq 1 ]; then
  echo "SHELLSPEC_DEFECT_SUBSHELL=1"
fi
set -e

set +e
eval "set -e"
sete=$-
if [ "$sete" = "${sete%e*}" ]; then
  echo "SHELLSPEC_DEFECT_SETE=1"
fi
set -e

SHELLSPEC_CLONE_TYPE="posix"
# shellcheck disable=SC3044
if typeset >/dev/null 2>&1; then
  set -- "$(var=data; typeset -p var 2>/dev/null ||:)" ||:
  if [ ! "${1#*data}" = "$1" ]; then
    if [ "${BASH_VERSION:-}" ]; then
      SHELLSPEC_CLONE_TYPE=bash OLDIFS=$IFS
      eval "$(typeset -p IFS)"
      [ "$OLDIFS" = "$IFS" ] || SHELLSPEC_CLONE_TYPE=old_bash IFS=$OLDIFS
    fi
    [ "${ZSH_VERSION:-}" ] && SHELLSPEC_CLONE_TYPE=zsh
    [ "${YASH_VERSION:-}" ] && SHELLSPEC_CLONE_TYPE=yash
    [ "${KSH_VERSION:-}" ] && SHELLSPEC_CLONE_TYPE=ksh
  elif [ "${ZSH_VERSION:-}" ]; then
    SHELLSPEC_CLONE_TYPE=old_zsh
  elif ( typeset -r .sh >/dev/null 2>&1 ); then
    SHELLSPEC_CLONE_TYPE=old_ksh
  else
    SHELLSPEC_CLONE_TYPE=old_pdksh
  fi
fi
echo "SHELLSPEC_CLONE_TYPE=$SHELLSPEC_CLONE_TYPE"

if sleep 0.1 2>/dev/null; then
  echo "SHELLSPEC_MSLEEP=1"
fi

if (: >/dev/tty && : </dev/tty) 2>/dev/null; then
  echo "SHELLSPEC_TTY=1"
fi

if "${0%/*}/shellspec-shebang" 2>/dev/null; then
  echo "SHELLSPEC_SHEBANG_MULTIARG=1"
fi

set +e
(
  # shellcheck disable=SC3045
  ulimit -t unlimited || exit 1

  # shellcheck disable=SC3047
  trap '' DEBUG || exit 1
  echo "SHELLSPEC_DEBUG_TRAP=1"
  echo "SHELLSPEC_KCOV_COMPATIBLE_SHELL=1"

  # Workaround for ksh93u+ and ksh2020 (fixed in ksh93u+m)
  # shellcheck disable=SC3047
  trap ':' DEBUG
  # shellcheck disable=SC2034
  r=$(exit 123)
  if [ $? -ne 123 ]; then
    echo "SHELLSPEC_DEFECT_DEBUGXS=1"
  fi
) 2>/dev/null
set -e

case $PWD in ([a-zA-Z]:* | //*)
  echo "SHELLSPEC_BUSYBOX_W32=1"
esac

set_path() {
  if [ "${KSH_VERSION:-}" ] && (eval ': "${.sh.version}"' 2>/dev/null); then
    # Workaround for ksh with kcov. Prevent ShellSpec self test fails.
    hash -r 2>/dev/null &&:
  fi
  PATH="$1"
}

# shellcheck disable=SC2123
set_path /
if [ "$SHELLSPEC_SANDBOX" ] && ! $SHELLSPEC_SHELL -c ":" 2>/dev/null; then
  # busybox ash on cygwin
  echo "SHELLSPEC_DEFECT_SANDBOX=1"
fi

set_path ""
if printf '' 2>/dev/null; then
  echo "SHELLSPEC_BUILTIN_PRINTF=1"
fi
if print -nr -- '' 2>/dev/null; then
  echo "SHELLSPEC_BUILTIN_PRINT=1"
fi

typesetf_check() { :; }
# shellcheck disable=SC3044
if typeset -f typesetf_check >/dev/null 2>&1; then
  echo "SHELLSPEC_BUILTIN_TYPESETF=1"
fi

if type shopt >/dev/null 2>&1; then
  echo "SHELLSPEC_SHOPT_AVAILABLE=1"
  # shellcheck disable=SC3044
  if shopt -s failglob 2>/dev/null; then
    echo "SHELLSPEC_FAILGLOB_AVAILABLE=1"
  fi
fi

if setopt NO_NOMATCH >/dev/null 2>&1; then
  echo "SHELLSPEC_NOMATCH_AVAILABLE=1"
fi

# shellcheck disable=SC2034,SC3022
if ( exec {fd}>/dev/null ) 2>/dev/null; then
  echo "SHELLSPEC_FDVAR_AVAILABLE=1"
fi

# shellcheck disable=SC3044
if readarray </dev/null 2>/dev/null; then
  echo "SHELLSPEC_BUILTIN_READARRAY=1"
fi

string=''
# shellcheck disable=SC3024
if string+="concat" 2>/dev/null; then
  echo "SHELLSPEC_STRING_CONCAT=1"
fi

if ( eval '{ : <#((0)); } <<<:' ) 2>/dev/null; then
  echo "SHELLSPEC_SEEKABLE=1"
fi

line=''
# shellcheck disable=SC3045
read -r -d "" line <<'HERE' 2>/dev/null ||:
a\b
HERE
if [ "$line" = 'a\b' ]; then
  echo "SHELLSPEC_READ_DELIM=1"
fi

#shellcheck disable=SC2034
{
  if [ "$({ BASH_XTRACEFD=3; set -x; :; } 2>/dev/null 3>&1)" ]; then
    echo "SHELLSPEC_XTRACEFD_VAR=BASH_XTRACEFD"
  elif [ "$({ ZSH_XTRACEFD=3; set -x; :; } 2>/dev/null 3>&1)" ]; then
    echo "SHELLSPEC_XTRACEFD_VAR=ZSH_XTRACEFD"
  fi

  xtrace() { echo XTRACE > /dev/null; }
  xtrace=$({ set -x; xtrace; } 2>&1)
  case $xtrace in (*XTRACE*) ;; (*)
    type typeset >/dev/null 2>&1 && xtrace=2 || xtrace=1
    echo "SHELLSPEC_DEFECT_XTRACE=$xtrace"
  esac
} 2>/dev/null &&:

if [ "${POSH_VERSION:-}" ] || ! export -p >/dev/null 2>&1; then
  echo "SHELLSPEC_DEFECT_EXPORTP=1"
fi

VAR="readonly"
readonly VAR
export VAR
if ! $SHELLSPEC_SHELL "${0%/*}/shellspec-inspection-readonly.sh" 2>/dev/null; then
  # ksh: readonly flag is inherit to child processes
  echo "SHELLSPEC_PATH_IS_READONLY=1"
fi

# arithmetic expansion is also required
exit $((0))