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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: master d8da850: Document cairo-related fallout to font-backend
 settings
Date: Wed, 22 Jan 2020 18:55:35 +0200
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Cc: stefan@marxist.se, emacs-devel@gnu.org
To: Robert Pluim <rpluim@gmail.com>
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> From: Robert Pluim <rpluim@gmail.com>
> Cc: stefan@marxist.se,  emacs-devel@gnu.org
> Date: Wed, 22 Jan 2020 17:11:30 +0100
> 
>     Eli> Can you show the proposed text of the warning?
> 
> if test "$with_xft" = yes; then
> AC_MSG_WARN([This configuration uses libXft,
> which has a number of font rendering issues, and is being considered for
> removal in the next release of Emacs.  Please consider using Cairo + HarfBuzz
> instead (they are auto-detected if the relevant development headers are
> installed).])
> fi
> 
> if test "${HAVE_CAIRO}" = "yes" && test "${HAVE_HARFBUZZ}" = no; then
>    AC_MSG_WARN([We recommend the use of HarfBuzz when using Cairo,
>    please install HarfBuzz development packages])
> fi

Sounds good, thanks.