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From:	Achim Gratz <Stromeko AT nexgo DOT de>
To:	cygwin AT cygwin DOT com
Subject:	Re: Latest Cygwin update and Emacs in Mintty
References:	<87wpciktid DOT fsf AT Rainer DOT invalid> <87o9tqs8c8 DOT fsf AT Rainer DOT invalid> <40991a4b-1e1c-4d03-f70f-8c77eb29bc7b AT cornell DOT edu> <840056d7-6365-97bb-96d0-cca35aaff925 AT cornell DOT edu> <87poe5m6rg DOT fsf AT Rainer DOT invalid> <e9c7af6c-19e6-04af-dd3d-db15291710e6 AT cornell DOT edu> <87y3srvld2 DOT fsf AT Rainer DOT invalid> <0367a274-06fb-90bb-0ac0-35c0c804c8af AT cornell DOT edu> <87d1a36n5n DOT fsf AT Rainer DOT invalid> <faff4ba2-728c-eb7c-682c-3ace57bc8dc7 AT cornell DOT edu>
Date:	Sat, 17 Jun 2017 16:38:36 +0200
In-Reply-To:	<faff4ba2-728c-eb7c-682c-3ace57bc8dc7@cornell.edu> (Ken Brown's message of "Sat, 17 Jun 2017 08:58:05 -0400")
Message-ID:	<878tkq7k7n.fsf@Rainer.invalid>
User-Agent:	Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)
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Ken Brown writes:
> Even with no .minttrc, 'emacs-nox -Q' followed by 'M-x
> set-background-color RET white RET' turns the background gray.

I can't rule out that there was a change to the configuration of Emacs
on that day that effectively added the set-background operation on that
day.

> I can also reproduce the
> problem in xterm, so I don't think Mintty is the culprit.

I already said in my original report that I can reproduce this from my
Linux box via konsole.

I don't know why I didn't think of that earlier, but I just fired up
emacs-nox from my Linux box and did 'M-x set-background-color RET white
RET' and guess what, the background turns a relatively dark shade of
grey.  I've tried to dig through the call chain that would lead to that
result and it seems that the result depends on whether brightwhite/15 or
white/7 gets picked from tty-color-alist or a value gets generated from
tty-color-standard-values (which uses the X definitions for the named
colors).


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

Factory and User Sound Singles for Waldorf Blofeld:
http://Synth.Stromeko.net/Downloads.html#WaldorfSounds

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