Re: device-color-cells a pain

Stephen J. Turnbull <[email protected]> wrote:

> >>>>> "Bill" == Bill Wohler <[email protected]> writes:
> 
>     Bill> Sorry if I wasn't clear. I wasn't stating the actual
>     Bill> heuristic, just my personal observation.
> 
> I think it's reasonable to guess that GNU Emacs is using some kind of
> heuristic if it returns those values in those circumstances.  As far
> as I know there is no standard way to find out how many colors a TTY
> supports.
> 
>     Bill> Thanks. Unfortunately, these don't seem to be in 21.4.18. It
>     Bill> seems to me that putting this logic in device-color-cells in
>     Bill> the first place would avoid these problems.
> 
> As far as I can see, that would cripple applications that have more
> strict requirements.  Either *you* have to test device-color-cells, or
> the "sophisticated" application has to use a completely different API.
> You can't both get the desired semantics from the same API.
> 
> If you have a suggestion that serves both purposes, I'd love to hear
> it.  But IMO a second API is silly when (or (device-color-cells) 2) is
> sufficient for your purposes.

I just took a quick look at the code for display-color-cells and it
returns the correct value no matter the display. I like that since it
removes the burden from the user from having to know about and deal with
all types of displays.

-- 
Bill Wohler <[email protected]>  http://www.newt.com/wohler/  GnuPG ID:610BD9AD
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