[[!comment format=mdwn
 username="smcv"
 ip="81.100.115.242"
 subject="comment 1"
 date="2014-07-21T20:15:13Z"
 content="""
Without actually checking the source code, I think the answer is:
if you refrain from saying that page *x* `will_render` a file *f* that
was previously rendered by *x*, IkiWiki will notice the difference,
and delete *f* automatically.
"""]]