consistency with the rest of emacs.
(tty-color-canonicalize): Only copy COLOR if we need to change it.
(tty-color-approximate): Scale values from `color-name-rgb-alist'
appropriately. Return the whole color description, rather than just the
RGB values.
(tty-color-standard-values): New function. Code mostly taken from
`tty-color-translate'.
(tty-color-translate, tty-color-values): Use `tty-color-desc' to do all
the work.
(tty-color-desc): Do color lookup here instead of calling
`tty-color-translate' and `tty-color-by-index'; this is now the main
place to do it.
* term/pc-win.el (msdos-setup-initial-frame): New function, run by
term-setup-hook. Call msdos-remember-default-colors and
msdos-handle-reverse-video.
(msdos-face-setup): Parts of code moved to
msdos-setup-initial-frame.
(msdos-handle-reverse-video): New function, modeled after
x-handle-reverse-video.
(make-msdos-frame): Don't use initial-frame-alist and
default-frame-alist. Call msdos-handle-reverse-video.
(msdos-color-aliases): Remove.
(msdos-color-translate, msdos-approximate-color): Remove.
(msdos-color-values): Use 16-bit RGB values. RGB values updated
for better approximation of X colors.
(msdos-face-setup): Call tty-color-clear. Remove code that sets
up tty-color-alist (it is now on startup.el).
(x-display-color-p, x-color-defined-p, x-color-values,
x-defined-colors, face-color-supported-p, face-color-gray-p):
Remove.
* facemenu.el (facemenu-read-color, list-colors-display): Use
defined-colors for all frame types.
(facemenu-color-equal): Use color-values for all frame types.
* faces.el (read-face-attribute): For :foreground and :background
attributes and frames on character terminals, translate the color
to the closest supported one before looking it up in the list of
valid values.
(face-valid-attribute-values): Call defined-colors for all types
of frames.
(defined-colors, color-defined-p, color-values, display-color-p):
New finctions.
(x-defined-colors, x-color-defined-p, x-color-values,
x-display-color-p): Aliases for the above.
* startup.el (command-line): Register terminal colors for frame
types other than x and w32, but only if the terminal supports
colors. Call tty-color-define instead of face-register-tty-color.
* term/x-win.el (xw-defined-colors): Renamed from
x-defined-colors.
* term/w32-win.el (xw-defined-colors): Likewise.
* term/tty-colors.el: New file.
* loadup.el: Load term/tty-colors.
