Re: Propertizing the minor-mode-alist

[Richard Stallman]

    One thing that I think would be a nice touch here is if emacs could do
    wavy underlines.  It's just a little more visually distinctive than a
    straight underline and slightly more suggestive of an error condition. 
    Perhaps one could allow the underline face attribute to have a list
    value like the box attribute can:

The feature would be unproblematic, but now's not the time for
new features like that.  If someone wants to implement it, after
the next release, installing it would be no problem.