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112efa81f2
`(exit N); exit N'. Otherwise, those many tests could exit with improper exit status when exiting via e.g., a trapped interrupt. Thanks to a report from Bob Proulx.
35 lines
718 B
Bash
Executable File
35 lines
718 B
Bash
Executable File
#!/bin/sh
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# When reading a specified number of lines, ensure that the output
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# file pointer is positioned just after those lines.
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if test "$VERBOSE" = yes; then
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set -x
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head --version
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fi
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pwd=`pwd`
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tmp=head-pos.$$
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trap 'status=$?; cd $pwd; rm -rf $tmp && exit $status' 0
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trap '(exit $?); exit' 1 2 13 15
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framework_failure=0
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mkdir $tmp || framework_failure=1
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cd $tmp || framework_failure=1
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(echo a; echo b) > in || framework_failure=1
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if test $framework_failure = 1; then
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echo "$0: failure in testing framework" 1>&2
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(exit 1); exit 1
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fi
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fail=0
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(head -n 1 >/dev/null; cat) < in > out || fail=1
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cat <<EOF > exp
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b
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EOF
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cmp out exp || fail=1
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test $fail = 1 && diff out exp 2> /dev/null
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(exit $fail); exit $fail
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