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Re: Why min-colors 88?
From: |
Bill Wohler |
Subject: |
Re: Why min-colors 88? |
Date: |
Sun, 05 Feb 2006 14:31:07 -0800 |
Dan Nicolaescu <address@hidden> wrote:
> Bill Wohler <address@hidden> writes:
>
> > Stefan Monnier <address@hidden> wrote:
> >
> > > >>> Can anyone explain the magic number 88 to me? Why is this used
> > > >>> throughout Emacs? Why is this the default generated when
> > > >>> customizing a face (on devices with lots of colors)?
> > > >>
> > > >> Because there's an 88-color xterm whose color set is rich enough to
> > > >> support all the colors we use in Emacs' faces.
> > >
> > > > Or in other words, Emacs' has 88 faces?
> > >
> > > Well, 88 foreground * 88 background * 2 slants * 2 darknesses * a bunch
> of
> > > sizes * a handful of fonts (* 89 colors of underlining * ...) is
> slightly
> > > more than 88.
> > > Then add to it the fact that many faces are identical.
> >
> > Whoops, I meant to say 88 different colors in all of its faces.
>
> No, (min-colors 88) means that the device that emacs uses for display
> guarantees that it can display at least 88 distinct colors.
Hi Dan, we weren't talking about the definition of min-color, but rather
the rationale between how 88 was chosen.
If Emacs uses less than 64 colors, and it looks good on Eric's device
where display-color-cells returns 64, and if Eric ensures that none of
the colors maps to the same device color*, then it's possible we might
consider lowering that number, eh? On the other hand, I think Eli was
implying that there was room for growth.
* I'm sure someone's written code to do perform this verification. Could
someone save me a few minutes by posting it or a pointer to it?
--
Bill Wohler <address@hidden> http://www.newt.com/wohler/ GnuPG ID:610BD9AD
Maintainer of comp.mail.mh FAQ and MH-E. Vote Libertarian!
If you're passed on the right, you're in the wrong lane.