failing test: diff: basics (1, 0, 1)

failing test: diff: basics (1, 0, 1)

undefined, expected: "<em>the</em> quick <del>brown </del> fox <del>jumped </del><del><strong>over</strong> </del><ins>jumps </ins><ins><strong>o</strong>ver </ins>" result:"<em>the</em> quick <del>brown </del> fox <del>jumped </del><del><strong>over</strong> </del><ins>jumps </ins><ins><strong>o</strong>ver </ins>", diff: "<em>the</em> quick <del>brown </del> fox <del>jumped </del><del><strong>over</strong> </del><ins>jumps </ins><ins><strong>o</strong>ver </ins>"

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Doesn't fill me with confidence, this file hasn't changed since 2010-07-29.