GNU bug report logs - #39590
25.2; Inconsistent color-values return values

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: В.Санников <vsannikov20 <at> yandex.ru>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.2; Inconsistent color-values return values
Date: Thu, 13 Feb 2020 16:43:00 +0300

    (color-values "white")

returns "(65535 65535 65535)" while

    (color-values "#ffffff")

returns "(65280 65280 65280)" which is very surprising, confused and
inconsistent for me. Moreover, this leads to

    (color-name-to-rgb "white")

returns "(1.00390625 1.00390625 1.00390625)" which is looks wrong
because color components must be in [0; 1]



In GNU Emacs 25.2.2 (x86_64-pc-linux-gnu, GTK+ Version 3.22.21)
 of 2017-09-22, modified by Debian built on lgw01-amd64-050
Windowing system distributor 'The X.Org Foundation', version 11.0.12005000
System Description:	Ubuntu 18.04.4 LTS

Configured using:
 'configure --build x86_64-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
 --mandir=/usr/share/man --with-pop=yes

--enable-locallisppath=/etc/emacs25:/etc/emacs:/usr/local/share/emacs/25.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.2/site-lisp:/usr/share/emacs/site-lisp
 --with-sound=alsa --without-gconf --build x86_64-linux-gnu
 --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
 --mandir=/usr/share/man --with-pop=yes

--enable-locallisppath=/etc/emacs25:/etc/emacs:/usr/local/share/emacs/25.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.2/site-lisp:/usr/share/emacs/site-lisp
 --with-sound=alsa --without-gconf --with-x=yes --with-x-toolkit=gtk3
 --with-toolkit-scroll-bars 'CFLAGS=-g -O2
 -fdebug-prefix-map=/build/emacs25-jYekUr/emacs25-25.2+1=. 
-fstack-protector-strong
 -Wformat -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time
 -D_FORTIFY_SOURCE=2' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro''

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LC_MONETARY: ru_RU.UTF-8
  value of $LC_NUMERIC: ru_RU.UTF-8
  value of $LC_TIME: ru_RU.UTF-8
  value of $LANG: ru_RU.UTF-8
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Major mode: Fundamental

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Recent messages:
Quit
previous-line: Beginning of buffer

uncompressing faces.el.gz...done
Note: file is write protected
C-h C-g is undefined

read--expression: Command attempted to use minibuffer while in minibuffer
evil-backward-char: Beginning of line
End of line

Load-path shadows:
/usr/share/emacs25/site-lisp/cmake-data/cmake-mode hides 
/usr/share/emacs/site-lisp/cmake-mode
/usr/share/emacs/25.2/site-lisp/debian-startup hides 
/usr/share/emacs/site-lisp/debian-startup
/home/ves/.emacs.d/elpa/seq-2.20/seq hides 
/usr/share/emacs/25.2/lisp/emacs-lisp/seq
/home/ves/.emacs.d/elpa/let-alist-1.0.5/let-alist hides 
/usr/share/emacs/25.2/lisp/emacs-lisp/let-alist

Features:
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Memory information:
((conses 16 1024038 198976)
 (symbols 48 68161 0)
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 (strings 32 226401 5541)
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-- 
Вячеслав Санников
инженер-программист
ЛПО НТЦ МКС
Концерн "Автоматика"

Message #8 received at 39590 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: В.Санников <vsannikov20 <at> yandex.ru>
Cc: 39590 <at> debbugs.gnu.org
Subject: Re: bug#39590: 25.2; Inconsistent color-values return values
Date: Thu, 13 Feb 2020 17:46:18 +0200

> From: В.Санников
>  <vsannikov20 <at> yandex.ru>
> Date: Thu, 13 Feb 2020 16:43:00 +0300
> 
>      (color-values "white")
> 
> returns "(65535 65535 65535)" while
> 
>      (color-values "#ffffff")
> 
> returns "(65280 65280 65280)" which is very surprising, confused and
> inconsistent for me. Moreover, this leads to
> 
>      (color-name-to-rgb "white")
> 
> returns "(1.00390625 1.00390625 1.00390625)" which is looks wrong
> because color components must be in [0; 1]

This was changed for Emacs 27, which I think behaves as you want.
Please try the latest emacs-27 branch of the Emacs Git repository.

Message #11 received at 39590 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> gmail.com>
To: В.Санников <vsannikov20 <at> yandex.ru>
Cc: 39590 <at> debbugs.gnu.org
Subject: Re: bug#39590: 25.2; Inconsistent color-values return values
Date: Wed, 26 Feb 2020 07:53:38 -0500

found 39590 26.3
tags 39590 fixed
close 39590 27.1
quit

В.Санников <vsannikov20 <at> yandex.ru> writes:

>     (color-values "#ffffff")
>
> returns "(65280 65280 65280)"

This happens in 26.3 as well.

>     (color-name-to-rgb "white")
>
> returns "(1.00390625 1.00390625 1.00390625)"

Although this one does not (I get (1.0 1.0 1.0) there).  Both cases are
fixed in emacs-27.

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