CSS 2.1, Section 16.6 White-space, white-space: pre-line value "directs user agents to collapse sequences of whitespace. Lines are broken at newlines in the source, at occurrences of '\A' in generated content, and as necessary to fill line boxes".
Live (actual) results:
One Two Three Four Five Six Seven Eight Nine Ten Eleven.
Expected results: (screenshot 260px wide by 56px high)
Internet Explorer 8, Opera 9.64, Safari 4.0 beta all pass this test