In the edit box, when I type [[John Doe]], I want some chance to verify that I'm linking to the right article, whether it is a disambiguation page, or by seeing the first sentence from that article. I know I can "preview" my edit and click that link to see the page (or ctrl-click to make it appear in a new tab), but that method just seems sooo 2002.
Is there some tool, button or gadget that does this trick? Perhaps some greasemonkey script?
What it would do: From where the cursor stands in the edit box, search backwards for a "[[" and then forwards to the following "|" or "]]" which ever comes first (this covers the case that the cursor is inside the link brackets). Look up that article, show the first paragraph or 150 characters in a pop-up. If I click a link in the pop-up (a top link, or a disambig page), replace the link in the edit box so it points to that article.