Diff engine 

Hello, I see that you maintain wdiff/wikEdDiff. As you know, Wikimedia projects as diff engine use wikidiff2, which is written in C. wikidiff2 has a couple annoying bugs which make many diffs useless: could you maybe give a look and contribute some suggestion or patch (see mw:Developer access, basically everyone can committ patches nowadays)? In particular, I've been told that bug 13462 could be trivially fixed, but this could give huge problems due to the poor performance in some edge cases (bug 22559), which is supposed to get much worse in that case.