+use IkiWiki 2.00;
+
+# This regexp is based on the one in Text::WikiFormat.
+my $link_regexp=qr{
+ (?<![^A-Za-z0-9\s]) # try to avoid expanding non-links with a
+ # zero width negative lookbehind for
+ # characters that suggest it's not a link
+ \b # word boundry
+ (
+ (?:
+ [A-Z] # Uppercase start
+ [a-z0-9] # followed by lowercase
+ \w* # and rest of word
+ )
+ {2,} # repeated twice
+ )
+}x;