mirror of https://github.com/n-hys/bash.git
52 lines
1.3 KiB
Plaintext
52 lines
1.3 KiB
Plaintext
# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# test whether or not temporary environment assignments are exported
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# in posix mode. works now, posix says it will not work in the future
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show2()
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{
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printf %s "foo=${foo-<unset>}"
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echo -n ' environment foo='
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printenv foo || echo
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}
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showfoo()
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{
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local foo
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foo=showfoo show2
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}
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unset foo
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showfoo
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foo=foo showfoo
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showfoo
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echo outside: "foo=${foo-<unset>}"
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echo ; echo 'posix mode'
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set -o posix
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unset foo
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showfoo
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echo outside 1.0: "foo=${foo-<unset>}"
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foo=foo showfoo
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showfoo
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echo outside 1.1: "foo=${foo-<unset>}"
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unset foo
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show2
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echo outside 2.0: "foo=${foo-<unset>}"
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foo=foo show2
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show2
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echo outside 2.1: "foo=${foo-<unset>}"
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