Thanks for the prompt response Simon, hope your day is going well. :)

Sorry for my misunderstanding, but do you mean renaming/refactoring out $URL altogether?

I used $URL to maintain compatibility with functions that already call HTTP::absoluteURLs with $URL in the given $code string.

I'd really like some feedback from Ingo on this before I update this pull request, unless you're happy for me to go ahead and issue a revision now.