Last modified: 2012-06-27 12:28:55 UTC
Parenthesis facing the wrong way in this diff: http://simple.wikipedia.org/w/index.php?title=Xenu&diff=prev&oldid=1698000
There doesn't seem to be any bug here. Someone inserted unicode directionality mark and the rest is the result of unicode bidi algorithm doing its horrors. Display could perhaps be improved with adding embedding block inside the parenthesis.
Created attachment 9184 [details] diff description/summary on right has two left parens instead of a left and a right Still reproducible in 1.18wmf1.
The edit summary as listed in the revision history: (cur | last) 00:20, 23 August 2009 Apples grow on pines (talk | changes) (2,274 bytes) () (undo)
Created attachment 9185 [details] revision history displaying the problematic edit summary Hmm, in MediaWiki it looked more like: <i>(</i>(odnu) <i>(</i> Attaching screenshot.
As Niklas says, there's the Right-to-Left Overrirde (RLO) character here. It's pointless, but that's what it does - it forces all text to be right-to-left. It's not a MediaWiki bug by itself. Such characters are already prohibited in page titles and it may make sense to prohibit them in edit summaries, too.
This is not a bug in mediawiki, hence - closing as invalid.
