Hello,
I'm the co-author of the WWW::Wikipedia Perl module ( https://metacpan.org/release/WWW-Wikipedia). It programmatically parses the raw source of a Wikipedia page.
Of late, a few changes in behaviour have been reported to me -- all related to the "language" functionality.
As it turns out a number of pages are no longer returning the language links in the raw source code like they used to. The canonical test for us was to load "Russia" in English, then grab the Russian link. As you can see, the page for "Russia" no longer has those links (which can normally be seen down the left-hand side of the real page):
http://en.wikipedia.org/w/index.php?title=Russia&action=raw
A shorter example is the page for "Rotation"
http://en.wikipedia.org/w/index.php?title=Rotation&action=raw
I did find that some pages still have language links. See this one for "Babushka"
http://en.wikipedia.org/w/index.php?title=Babushka&action=raw
Has there been some change that no longer outputs those links in some instances, or is this an actual bug?
I apologize that this wasn't sent to some official bug tracker, but I couldn't find that info off-hand from the Wikipedia site.
Thanks in advance,