Shift-clicking a player link

[Kanegasi]

Is the code responsible for shift-clicking a player link to put their name in the editbox available? I've searched the extract in a few ways, but haven't found anything that does this.

I'm trying to see if it's possible to stop it from adding the realm name. I have considered hooking the editbox and just looking for anything that matches .+-.+, but I would rather stop it from the source if possible.