Some browsers (IE if I recall correctly) internally interpret href attributes absolutely.

Meaning (atleast with javascript selectors) that href^="http" would match internal links as well.
I don't know if this is the case for real CSS as well, should be easy to test.

However, what about removing wgServer prefix all together ? Do we need it ?

Patch by mybugs.mail@gmail.com

make patch from attachment

Attached:

Created attachment 8478
Remove the check and the wgServer prefix from mw.util.wikiGetlink

The check is not needed, if wgArticlePath is undefined there's probably a much bigger issue.

The wgServer doesn't need to be prefixed to the link (if someone really needs it (ie. external tools using the script and somehow defining wgServer in mw.config) they can surely prefix wgServer themselfs.

In most if not all cases this is used to create anchor tags, which are interprated by browsers relatively to the current window location and in some browsers it even auto-prefixes the current environment when setting the href/src attribute.

Attached:

Fixed in r87208.