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https://issues.apache.org/jira/browse/JSPWIKI-492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18133090#comment-18133090
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Arturo Bernal commented on JSPWIKI-492:
---------------------------------------
Checked on the current master with a test: MarkupParser.cleanLink applied to
the word Metre followed by the superscript two returns just Metre, so the
superscript is removed when a page is referred to by a link. A page saved
directly under the name with the superscript two is accepted and exists, so the
restriction is in the link clean-up and not in the page providers. This matches
what the report describes, that the superscript two and three characters cannot
be used in page titles. I did not check which other characters are removed the
same way.
> Special characters in page titles
> ---------------------------------
>
> Key: JSPWIKI-492
> URL: https://issues.apache.org/jira/browse/JSPWIKI-492
> Project: JSPWiki
> Issue Type: Bug
> Affects Versions: 2.8.1
> Reporter: Bruno Peeters
> Priority: Minor
>
> Special characters such as é, è, à, ù, ... are currently allowed in page
> titles.
> We have noticed however that ² and ³ are still not possible in page titles,
> which could be handy for us.
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