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Re: Inaccuracy in NEWS.28


From: Eli Zaretskii
Subject: Re: Inaccuracy in NEWS.28
Date: Tue, 01 Mar 2022 15:14:31 +0200

> From: Po Lu <luangruo@yahoo.com>
> Cc: emacs-devel@gnu.org
> Date: Tue, 01 Mar 2022 20:46:59 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > So if you think mentioning Pango there is incorrect (but please
> > explain why, as I don't think I agree with your reasoning: AFAIK Pango
> > is the text layout engine used by Cairo)
> 
> Pango is a text layout and font management library which operates on a
> much higher level than cairo.  It performs bidirectional reordering, and
> delegates to HarfBuzz for text shaping, along with using FreeType for
> calculating glyph metrics and for opening fonts, and fontconfig to
> enumerate fonts.
> 
> Cairo is one of the many libraries that Pango can use to display glyphs
> onto the glass, but is otherwise unrelated to Pango.

Robert, do you agree?

> However, judging by those discussions, there does seem to be some
> problems with cairo and bitmap fonts.  So how about saying this instead:
> 
>   Building with Cairo is known to cause some problems with bitmap fonts.
>   This may require you to adjust your font settings, or to build with
>   Xft support instead.

Please show a complete patch, it's hard to guess which text you'd like
to replace with this.

Thanks.



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