Steps to reproduce:
- Create a book
- Set the subtitle to [[Main Page|Example]]
- Download and open the PDF
The subtitle in the PDF is literally "[[Main Page|Example]]". It should be "Example".
Example: http://en.wikipedia.org/w/index.php?title=Special:Book/download/&collection_id=d196ec454c0f7cba&writer=rl&return_to=Special%3ABook ([[Wikipedia:Books/FPC terminology]])
Version: unspecified
Severity: enhancement