Call wfExpandUrl in request() [HttpFunctions.php]
If you have an interwiki link:
ru => '//ru.wikifur.com/wiki/$1'
where iw_trans is set to 1
then the following inclusion:
will fail with the following error:
"[Template fetch failed for en.wikifur.com/wiki/GreenReaper?action=render]"
"Warning: file_get_contents(en.wikifur.com/wiki/GreenReaper?action=render) [function.file-get-contents]: failed to open stream: No such file or directory in [*censored*]/pool/w/includes/HttpFunctions.php on line 116"
If wfExpandUrl is called to expand the $url passed to request(), this ensures (once bug 18664 is fixed) that the relative URL becomes an absolute URI as required by file_get_contents.