MediaWiki reader disagrees with MediaWiki proper on emphasis of possessive trailing quotes

[silby]

In the simplest case:

pandoc -t native -f mediawiki
''foo'''
^D
[ Para [ Emph [ Str "foo" ] , Str "'" ] ]

but MediaWiki itself would want Emph [Str "foo'"], as can be seen in their regression test.

I came across this while trying to port some of that test file to Pandoc tests, in service of fixing #3044.

Should this be fixed (in principle) in the MediaWiki reader or is this an accepted difference between Pandoc and MediaWiki?

[jgm]

In principle it should be fixed.