<quote name="Subramanya Sastry" date="2015-06-25" time="17:22:53 -0500">
TL:DR;
- Parsoid[1] roundtrips 99.95% of the 158K pages in round-trip testing without introducing semantic diffs[2].
- With trivial simulated edits, the HTML -> wikitext serializer used in production (selective serialization) introduces ZERO dirty diffs in 99.986% of those edits[3]. 10 of those 23 edits with dirty diffs are minor newline diffs.
Huge congrats, Subbu and team!