[[!template id=gitbranch branch=smcv/ready/urlto author="[[Simon_McVittie|smcv]]"]]
[[!tag patch]]

urlto() has a special-case for a zero-length first argument, but it
produces a relative path even if the third argument is given and true.

My `ready/urlto` branch simplifies this special case so it works. --[[smcv]]

[[merged|done]] --[[Joey]]