Exclude category exception?

[dinkypumpkin]

On 04/09/2012 17:07, Arthur Murray wrote:
> Thanks for the details.  The use case was for the webpvr frontend,
> get_iplayer.cgi which sends the parameters at once.
>
> I want it to return a list of all programs except certain channels
> (CBBC,CBeebies,Alba) and certain categories(Children's,Primary,Sport)
> unless the category is Golf.   Doesn't sound possible.

I don't think so.  There is no mechanism to interpret "unless".  The BBC 
has reasonably well-defined taxonomy, and golf programmes will almost 
certainly also be in the Sport category.  Excluding Sport will always 
exclude Golf as well.  Perl doesn't support variable length lookbehind 
in regular expressions, and I can't think of another regex solution. 
Maybe someone else can.