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#!/bin/sh
# When reading a specified number of lines, ensure that the output
# file pointer is positioned just after those lines.
if test "$VERBOSE" = yes; then
set -x
head --version
fi
pwd=`pwd`
tmp=head-pos.$$
trap 'status=$?; cd $pwd; rm -rf $tmp && exit $status' 0
trap '(exit $?); exit' 1 2 13 15
framework_failure=0
mkdir $tmp || framework_failure=1
cd $tmp || framework_failure=1
(echo a; echo b) > in || framework_failure=1
if test $framework_failure = 1; then
echo '$0: failure in testing framework' 1>&2
(exit 1); exit
fi
fail=0
(head -n 1 >/dev/null; cat) < in > out || fail=1
cat <<EOF > exp
b
EOF
cmp out exp || fail=1
test $fail = 1 && diff out exp 2> /dev/null
(exit $fail); exit
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