source: trunk/essentials/app-shells/bash/tests/read1.sub

a=7
echo 'abcdefg|xyz' | {
        read -d '|' a 
        echo a = "${a-unset}"
}

echo xyz 123 | {
        read -d ' ' a
        echo a = "${a-unset}"
}

echo xyz 123 | {
        read -d $'\n' a
        echo a = -"${a-unset}"-
}

a=44
echo abcd | {
        read -d d a
        echo a = $a
}

exit 0