[BB-API] Invalid XML characters

[Richard Smith]

Graham John wrote:

> https://bb.ringingworld.co.uk/view.php?id=1238812
> 
> I got an invalid xml characters exception reading this performance as XML
> because there is in an invalid character in the second paragraph of footnote
> (after "on the"). Should BellBoard constrain user input to a standard set of
> readable UTF8 characters?

Thanks for reporting this.  The character in question is a 
vertical tab (U+000B), which seems a pretty odd character to 
have found its way into the footnote.  However I've now 
added code to strip control characters that cannot be 
represented legally in XML.


Richard