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Re: Inclusion of naquadah-theme

From: Chong Yidong
Subject: Re: Inclusion of naquadah-theme
Date: Sat, 30 Jun 2012 10:15:23 +0800
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1.50 (gnu/linux)

Julien Danjou <address@hidden> writes:

>> I'm not sure I understand.  If you specify a face with a color like
>> "#252A2B", doesn't Emacs display the closest matching color on terminals
>> with limited colors?
> It does try, but the result is not always good. Some colors are
> correctly picked up as closest/best choice, others aren't fine. We're
> doing a better job manually.

Well, first of all there are really only two cases that need to be
handled: terminals that can handle #rrggbb, and 16-color terminals.  In
my experience, 256-color xterms give a rather good approximation of the
desired colors automatically, without manual color placement.

As for matching color names to faces, the approach that we've used in
tango-theme.el and others is to do something like this:

(let ((class '((class color) (min-colors 89)))
      ;; Tango palette colors.
      (butter-1 "#fce94f")

   `(cursor ((,class (:background ,butter-1))))

Apart from handling multiple terminals, naquadah-simple-face-to-multiple
aims to do the same thing, right?  I'm guessing the reason is that you
feel that having explicit functions is more structured/less ad-hoc than
the above let-form.  If that's the case, maybe the solution is to add a
new macro to custom.el, which does something like this:

(custom-theme-set-faces-with-color-names THEME TERMINALS COLORS FACES...)

  ((term-1 ((class color) (min-colors 4096)))
   (term-2 ((class color) (min-colors 16))))
  ((butter (term-1 "#fce94f") (term-2 "yellow")))
  (cursor :background butter)


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