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From: "Mattias Engdegård" <mattiase@acm.org>
To: Stephen Leake <stephen_leake@stephe-leake.org>,
	Yuri Khan <yuri.v.khan@gmail.com>,
	Drew Adams <drew.adams@oracle.com>,
	tomas@tuxteam.de
Cc: emacs-devel <emacs-devel@gnu.org>
Subject: Re: master 68ae6fa: Improved light/dark colour predicate (bug#41544)
Date: Thu, 18 Jun 2020 21:28:55 +0200	[thread overview]
Message-ID: <5A6B8DE2-EADF-4D74-A0EA-DE5303F828D4@acm.org> (raw)
In-Reply-To: <86v9jwksod.fsf@stephe-leake.org>

Thanks to those who replied -- the originally proposed 0.325 luminance limit seems to be fairly uncontroversial and can be changed if evidence indicates that it was badly chosen. Most of all, the value seems to work well across all platforms and a sufficient variety of equipment, which is the important part.

Special thanks to Yuri for helping me confirm that the theoretical 50% lightness of luminance 0.18 wasn't necessarily an optimal value in this case. Trust my own eyes, but verify!

The constant has now been given a (provisional) name, for extra clarity and ease of adjustment.




  reply	other threads:[~2020-06-18 19:28 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200610181238.9796.44750@vcs0.savannah.gnu.org>
     [not found] ` <20200610181239.947C4204DF@vcs0.savannah.gnu.org>
2020-06-10 19:20   ` master 68ae6fa: Improved light/dark colour predicate (bug#41544) Stefan Monnier
2020-06-10 19:34     ` Mattias Engdegård
2020-06-10 20:01       ` Stefan Monnier
2020-06-11  5:15     ` Yuri Khan
2020-06-11 16:15       ` Mattias Engdegård
2020-06-11 19:22         ` Yuri Khan
2020-06-12 15:50           ` Mattias Engdegård
2020-06-12 16:22             ` tomas
2020-06-12 18:36             ` Yuri Khan
2020-06-13 10:55               ` Mattias Engdegård
2020-06-12 19:02             ` Drew Adams
2020-06-12 19:09             ` Stephen Leake
2020-06-18 19:28               ` Mattias Engdegård [this message]
2020-06-18 19:35                 ` Drew Adams
2020-06-18 20:04                   ` Mattias Engdegård
2020-06-18 20:32                     ` Drew Adams
2020-06-21  7:51                       ` Mattias Engdegård
2020-06-18 19:40                 ` Basil L. Contovounesios
2020-06-18 19:58                   ` Mattias Engdegård
2020-06-13  4:05             ` Richard Stallman

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