Diff engine   Hello I see that you maintain wdiffwikEdDiff As you know Wikimedia projects as diff engine use wikidiff which is written in C wikidiff has a couple annoying bugs which make many diffs useless could you maybe give a look and contribute some suggestion or patch see mwDeveloper access basically everyone can committ patches nowadays In particular Ive been told that bug  could be trivially fixed but this could give huge problems due to the poor performance in some edge cases bug  which is supposed to get much worse in that case