Re: Minimal patch: Use link face as default for button face

[Richard Stallman]

    > -(defface button '((((type pc) (class color))
    > -                  (:foreground "lightblue"))
    > -                 (t :underline t))
    > +(defface button
    > +  '((t :inherit link))
    >    "Default face used for buttons."
    >    :group 'basic-faces)

    This modifies the face default for (type pc).  I don't think it's
    time to change defaults now.

It makes changes on many kinds of platforms, since `link'
does a lot more than just underline.

Buttons are different from links, so I think this change is probably a
mistake on general principles.