<!DOCTYPE html>
<style>
div {
    font: 1em/1 Ahem;
    width: 1em;
}
span {
    color: lime;
    background: lime;
}
.normal {
    white-space: normal;
}
.pre {
    white-space: pre;
}
</style>
This test passes if there is a green horizontal line below. It tests that a break
is not introduced just because an inline with white-space:pre ends in whitespace.<br>
<div class="pre"><span>xxxx xxxx</span></div>