outline-mode faces

[Miles Bader]

Can anyone explain the logic behind the faces used by outline mode?

It associates each level in the outline with a different font-lock face;
since font-lock faces have no particular ordering, this results in a
seemingly arbitrary amount of emphasis for the different outline levels.

Here are the mappings used by outline-mode:

    '((1 . font-lock-function-name-face)
      (2 . font-lock-variable-name-face)
      (3 . font-lock-keyword-face)
      (4 . font-lock-builtin-face)
      (5 . font-lock-comment-face)
      (6 . font-lock-constant-face)
      (7 . font-lock-type-face)
      (8 . font-lock-string-face))))

When reading the NEWS file under `emacs -q' on a (black-backgrond) tty,
this results in the following output:

  1 - boldface blue   (not bad, decently emphasized)
  2 - (normal) green  (much less emphasized)
  3 - boldface cyan   (extremely noticable, more so than level 1)

so the result is that level 3 items, the least important, are the most
noticable, and level 2 items kind of disappear into the background.
[the colors used on light-background X display are different, but the
lack of sensible ordering is still present]

I guess it's probably too late to change this for 21.1, but outline mode
seems like it really needs its own set of faces...

-Miles