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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: [PATCH] Use fontconfig spec for parsing font-weight.
Date: Mon, 17 May 2021 09:14:19 +0300
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To: Yukio Siraichi <sir.yukio@gmail.com>
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In-Reply-To: <c5c809db-d09c-11c6-a46e-a3ec32a8d714@gmail.com> (message from
 Yukio Siraichi on Mon, 17 May 2021 13:37:31 +0900)
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> From: Yukio Siraichi <sir.yukio@gmail.com>
> Date: Mon, 17 May 2021 13:37:31 +0900
> 
> This patch addresses one of the differences between 'fontconfig' 
> font-weight table, and the one inside emacs. Basically, the problem was 
> that emacs wasn't listing fonts whose weight=55. However, those are 
> defined to be 'semilight' in the fontconfig specification (see link below).
> 
> Reproducing this problem only requires the existence of fonts whose 
> weight=55 (one can use fc-cat for that). It's possible to observe that 
> such fonts are not found in 'x-list-fonts' or when running 'describe-font'.

Thanks, but why is it important for these fonts to appear in those
lists?  What is the practical advantage of that for Emacs users?