Apr 26 2018
Dec 24 2017
I think it may be related to T36873
Feb 27 2017
Oct 16 2016
May 3 2016
Jan 13 2015
This happens when there is a blank space after / / or nothing else. As you can see in https://www.mediawiki.org/wiki/User:Metr%C3%B3nomo. The 7th example is the most interesting.
Ok, now I can see why it behaves as external link, but still sometimes is broken and is no internal or external ...
Jan 12 2015
You can see more in https://www.mediawiki.org/wiki/User:Metr%C3%B3nomo. There are two options: [ [ / / ] ] redirecting to a subpage or a page in the mainspace. Since I think that should not have sub-pages as https://www.mediawiki.org/wiki/User:Mattflaschen_(WMF)/Sandbox//Bar, I prefer the latter. But you know what is right.
That links like [ [ / / ] ] link to pages in the mainspace, now they do not link to anything.
Dec 30 2014