Wikimedia Bugzilla is closed!

If I use the following parser code in a category sub-page, e.g.
Category:Test/subpage:

 <nowiki>[[{{#ifeq: {{NAMESPACE}} | Category
|:}}{{NAMESPACE}}:{{BASEPAGENAME}}]]</nowiki>

I would expect a link back to the root page (Category:Test):

 [[:Category:Test]] (wiki code: <nowiki>[[:Category:Test]]</nowiki>)

Instead I get:
 [[

    Category:Help]] 

Which, in wiki code is : 

 [[
 :Category:Help]] 

In other words, a newline seems to be inserted before the colon, causing it to
be treated as a blockquote.

This may also affect the other functions, and other symbols, e.g. *.


NB - There doesn't seem to be a ParserFunctions component, so I've put this in
General/Unknown.