Specifies the email address that ikiwiki should use for sending email.
-* --diffurl http://url/trunk/\[[file]]?root=wiki&r1=\[[r1]]&r2=\[[r2]]
+* --diffurl http://url/trunk/\[[file]]?root=wiki&r1=\[[r1]]&r2=\[[r2]]
Specifies the url to link to for a diff of changes to a page. In the url,
"\[[file]]" is replaced with the file to browse, "\[[r1]]" is the old