RequestUtils.filter and Euro currency symbol

[Kristopher Brown]

Hi,
 
I have been trying to ouput a Euro currency symbol in an html:text tag, but the value 
attribute just contained the ? character.  I followed the code through to the 
RequestUtils.filter method where I noticed that only <, >, ", and & are encoded.  I 
modified the code so that it also checks for \u20ac and replaces it with &#8364; which 
then worked.
 
Is it a bug that the RequestUtils.filter method does not suitably encode high end 
unicode characters?  Could/should the code be modified to encode any character above a 
given threshold?
 
Has anyone else had any problems like this and what was the outcome?
 
Cheers,
 
Kris.