It's an open feature request. The current issue is finding a way to do so efficiently. Adding a mouse tracking region for each link (and moving it every time yo

It's an open feature request. The current issue is finding a way to do so efficiently. Adding a mouse tracking region for each link (and moving it every time you scroll) is impractical, and I'm not well enough versed in the display storage structures to know how easily you could get the bounding box of a link and hit-test for it without a performance hit. Cmd-clicking them works though.