Wikimedia Bugzilla is closed!

Hi.

I have the following in a template:

{{#set:Open Link=[[{{PAGENAME}}|{{{from}}} - {{{subject}}} - 
{{#sub:{{{date}}}|5|20}}]]}}

If the page name has an underscore in it e.g. joe_bloggs@hotmail.com, 
then the #set completely fails. The Open Link string type property is 
not set at all. Not even the {{{from}}} - {{{subject}}} - 
{{#sub:{{{date}}}|5|20}}]]} part gets set.

In fact, if there is an underscore anywhere in the #set then it totally fails.

Is there a way round this? Surely a #set on a string property should 
allow all valid string characters.

Thanks
Neill.