bash-5.1 distribution sources and documentation

[thirdparty/bash.git] / tests / varenv16.sub

#   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 3 of the License, 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/>.
#
# test whether or not temporary environment assignments are exported
# in posix mode. works now, posix says it will not work in the future

show2()
{
        printf %s "foo=${foo-<unset>}"
        echo -n ' environment foo='
        printenv foo || echo
}

showfoo()
{
	local foo

	foo=showfoo show2
}

unset foo
showfoo
foo=foo showfoo
showfoo
echo outside: "foo=${foo-<unset>}"

echo ; echo 'posix mode'
set -o posix
unset foo
showfoo
echo outside 1.0: "foo=${foo-<unset>}"
foo=foo showfoo
showfoo
echo outside 1.1: "foo=${foo-<unset>}"

unset foo
show2
echo outside 2.0: "foo=${foo-<unset>}"
foo=foo show2
show2
echo outside 2.1: "foo=${foo-<unset>}"