This is just one of many, but MediaWiki:Historywarning and
MediaWiki:History need to be merged, they each contain:
MediaWiki:Historywarning = Warning: The page you are about to delete
has a history:
MediaWiki:History = Page history
And when this is put together in the rendered page it looks like this:
"Warning: The page you are about to delete has a history: Page history"
Since it is already split for me i have no option to put "Page
history" in the middle, or first, it has to be in the center, this
just doesn't work in all languages without making the sentences sound
very awkward.
Another message which is split like this is MediaWiki:Previewnote and
MediaWiki:Note