mirror of https://github.com/n-hys/bash.git
63 lines
1.7 KiB
Plaintext
63 lines
1.7 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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export LC_ALL=C
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export LANG=C
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# test out the new $(< filename) code
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# it should be exactly equivalent to $(cat filename)
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FILENAME=$TMPDIR/bashtmp.x$$
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trap 'rm -f $FILENAME' 0
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cat >$FILENAME << EOF
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line 1
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line 2
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line 3
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EOF
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LINES1=$(cat $FILENAME)
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LINES2=$(< $FILENAME)
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if [[ $LINES1 != $LINES2 ]]; then
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echo 'whoops: $(< filename) failed'
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fi
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LINES2=$(< $TMPDIR/bashtmp.x*)
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if [[ $LINES1 != $LINES2 ]]; then
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echo 'whoops: $(< filename) with glob expansion failed'
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fi
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# but the glob expansion in the redirection should fail in posix mode
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set -o posix
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exec 3>&2
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exec 2>/dev/null
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LINES2=$(< $TMPDIR/bashtmp.x*)
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exec 2>&3
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if [[ $LINES2 -gt 0 ]]; then
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echo "whoops: redirection glob expansion should be disabled in posix mode" >&2
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fi
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set +o posix
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# now see what happens when we try it with a non-existent file
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rm -f /tmp/redir-notthere
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LINES3=$(< /tmp/redir-notthere)
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echo $?
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# These were bugs through bash-4.2
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{ : "$({xxxxxxxxxxxxxxxxxxxx}</dev/stdin)"; } <<<'hi'
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echo ${xxxxxxxxxxxxxxxxxxxx}
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{ echo "$(1111111111111111111111</dev/stdin)"; } <<<'hi'
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