RE: Underlining in compile.el

[Drew Adams]

        To me, it still seems like the entirely wrong approach to add new
        faces everywhere something may look like a link.

    The idea that beginners will be less confused if links are underlined
    seems inherently plausible.

A common practice used on Web pages with tables or lists that are dense with
similar links in similar places is to _not_ use underlining.

That is, in a long list where each list item is a link, and where the list
is the main thing on the page, underlining is often foregone because it is
unnecessary and would be distracting. Users can easily figure out that each
line is a link - mouseover anywhere within the list (the page) highlights a
link.

If compile and grep buffers had full-line links, the links would be easier
to access, they would help with visual alignment (like using a ruler in a
parts catalog), and there would be no need to underline them. Mouseover
highlighting would suffice, and the mouseover highlighting could itself be
underlining, to reduce noise.