t/ax/shell-no-trail-bslash.in

#! @AM_TEST_RUNNER_SHELL@
# Copyright (C) 2012-2013 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# A "shell" that chokes on '-c' commands having a trailing '\' character
# (possibly followed by whitespace only).  This is to emulate problems
# seen in older bash versions (e.g., bash 2.05b).
# See also automake bug#10436.

set -e
set -u

am_SHELL=${AM_TESTSUITE_SHELL-'@SHELL@'}

tab='	'
nl='
'
am_shell_flags=
am_shell_command=; unset am_shell_command
while test $# -gt 0; do
  case $1 in
    # If the shell is invoked by make e.g. as "sh -ec" (seen on
    # GNU make in POSIX mode) or "sh -ce" (seen on Solaris make).
    -*c*)
        am_flg=$(printf '%s\n' "$1" | sed -e 's/^-//' -e 's/c//g')
        if test x"$am_flg" != x; then
          am_shell_flags="$am_shell_flags -$am_flg"
        fi
        am_shell_command=$2
        shift;;
    -?*)
        am_shell_flags="$am_shell_flags $1";;
      *)
        break;;
  esac
  shift
done

if test x${am_shell_command+"set"} != x"set"; then
  # Some make implementations, like *BSD's, pass the recipes to the shell
  # through its standard input.  Trying to run our extra checks in this
  # case would be too tricky, so we just skip them.
  exec $am_SHELL $am_shell_flags ${1+"$@"}
fi

case $am_shell_command in
  *" "|*"$tab"|*"$nl")
    am_tweaked_shell_command=$(printf '%s\n' "$am_shell_command" \
                                 | tr -d " $tab$nl");;
  *)
    am_tweaked_shell_command=$am_shell_command;;
esac

case $am_tweaked_shell_command in
  *\\)
    printf '%s\n' "$0: recipe ends with backslash character" >&2
    printf '%s\n' "=== BEGIN recipe" >&2
    printf '%s\n' "${am_shell_command-}" >&2
    printf '%s\n' "=== END recipe" >&2
    exit 1
    ;;
esac

exec $am_SHELL $am_shell_flags -c "$am_shell_command" ${1+"$@"}