New subject: Problems finding the official MediaWiki version that Wikipedia uses.

3 Dec 2011

Hi all. My apologies if this is not the right group.

I'm trying to find the official MediaWiki version which Wikipedia uses.

According to http://en.wikipedia.org/wiki/Wikipedia:About, Wikipedia
is running MediaWiki version 1.18wmf1 (r104604).

However, when I download r104604, I get a version that is close to
Wikipedia, but not quite.

For example, when parsing the following text: a<sup>2</sub>b
MediaWiki produces "a<sup>2&lt;/sub&gt;b</sup>"
Wikipedia produces "a<sup>2</sup>b</p>"

Wikipedia converts the </sub> tag to a </sup> tag. You can see this in
http://en.wikipedia.org/wiki/Algebraic_geometry with the following
excerpt: rectangular box
''a''<sup>2</sub>''b''
I've noticed other discrepancies as well (so far about a dozen). I
list 2 more below. I can list more if anyone is interested, or think
it's relevant.

I'm new to MediaWiki development, so I might be doing something stupid.
However, I've gone through other versions (svn commands listed below),
and I can't figure it out. I've spent well over an hour on it.

Can any one point me in the right direction?

Thanks.

SVN commands
official release (r104604): svn checkout
http://svn.wikimedia.org/svnroot/mediawiki/trunk/phase3@104604 wiki
bleeding edge release:      svn checkout
http://svn.wikimedia.org/svnroot/mediawiki/trunk/phase3 wiki
latest trunk release?:      svn checkout
http://svn.wikimedia.org/svnroot/mediawiki/trunk/phase3@105083 wiki

Urls for testing behavior. I've been using the "Show preview" button
(it invokes the same code in Parser.php/Sanitizer.php). Modify the
localhost url as per your environment.
http://en.wikipedia.org/w/index.php?title=Wikipedia:Sandbox&action=subm…
http://localhost/wiki/index.php?title=Main_Page&action=submit

Other divergent behavior
== <span/> converted to <span></span> ==
Text     : <span id="a" />
MediaWiki: &lt;span id="a" /&gt;
Wikipedia: <span id="a"></span>
Ref      : http://en.wikipedia.org/wiki/Altaic_languages
Excerpt:

<!-- NOTE:
Please leave the following id's which were the previous titles of this
section. Many pages link to these section titles.
--><span id="Controversy" /> <span id="The controversy over
Altaic" />

== Empty tags pruned ===
Text     : a '' '' b
MediaWiki: a <i> </i> b
Wikipedia: a b
Ref      : http://en.wikipedia.org/wiki/Arkansas
Excerpt  :

'''53.21%''' '' ''505,823