mirror of https://github.com/n-hys/bash.git
77 lines
2.2 KiB
Plaintext
77 lines
2.2 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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# make sure redirections do not have access to the temporary environment, even
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# in subshells and command substitutions
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a=1
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a=4 b=7 ss=4 echo $a
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# use grep to avoid differences due to different system error messages
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a=42
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a=2 echo foo 2>&1 >&$a | { grep -q '\$a: Bad file' || echo 'redir11 bad 1'; }
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a=2 echo foo 2>&1 >&$(echo $a) | { grep -q 'Bad file' || echo 'redir11 bad 2'; }
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foo()
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{
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local -i a
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local v=0 x=1
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a+=3
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echo $a
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}
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a=4 b=7 ss=4 declare -i ss
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a=4 b=7 foo
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echo after: $a
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unset a
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a=4 echo foo 2>&1 >&$(foo) | { grep -q 'Bad file' || echo 'redir11 bad 3'; }
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a=1 echo foo 2>&1 >&$(foo) | { grep -q 'Bad file' || echo 'redir11 bad 4'; }
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a=1 echo foo 2>&1 >&$(a=4 foo) | { grep -q 'Bad file' || echo 'redir11 bad 5'; }
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echo foo 2>&1 >&$(a=4 foo) | { grep -q 'Bad file' || echo 'redir11 bad 6'; }
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a=42
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a=2 echo foo 2>&1 >&$a | { grep -q 'Bad file' || echo 'redir11 bad 7'; }
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a=2 echo foo 2>&1 >&$(echo $a) | { grep -q 'Bad file' || echo 'redir11 bad 8'; }
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unset -f foo
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foo()
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{
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local -i a
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local v=0 x=1
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a+=3
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echo $a >&$(ss= declare -i ss)
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}
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a=4 b=7 foo
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echo after: $a
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unset a
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typeset -i a
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a=4 eval echo $(echo a+=3)
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a=2
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a=9 echo foo >&$(echo $a)
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a=2
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a=9 eval echo foo >&$(echo $a)
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a=2
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a=9 eval echo foo '2>&1 >&$(echo $a)' | { grep -q 'Bad file' || echo 'redir11 bad 9'; }
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# double expansion of filenames when used in redirection error messages
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# present in bash versions back to at least bash-1.13
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# this is executed in the tests subdirectory of the source directory, so there
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# definitely should not be a file named `42'
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unset foo
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: <$((foo+=42))
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echo $foo
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