From: Mattias Engdegård <mattiase@acm.org>
Date: Thu, 18 Jun 2020 19:55:36 +0000 (+0200)
Subject: ; * lisp/faces.el (color-luminance-dark-limit): Better doc string.
X-Git-Tag: emacs-28.0.90~7142
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=b6c7780bb02465e3af2ccec332fc2d8b79fe7a2a;p=emacs.git

; * lisp/faces.el (color-luminance-dark-limit): Better doc string.
---

diff --git a/lisp/faces.el b/lisp/faces.el
index 2480aaaf146..ba85973bf10 100644
--- a/lisp/faces.el
+++ b/lisp/faces.el
@@ -1795,9 +1795,10 @@ on which one provides better contrast with COLOR."
       "#ffffff" "black"))
 
 (defconst color-luminance-dark-limit 0.325
-  "The relative luminance below which a color is considered 'dark',
-in the sense that white text is more readable than black with the
-color as background.  This value was determined experimentally.")
+  "The relative luminance below which a color is considered 'dark'.
+A 'dark' color in this sense provides better contrast with white
+than with black; see `color-dark-p'.
+This value was determined experimentally.")
 
 (defun color-dark-p (rgb)
   "Whether RGB is more readable against white than black.