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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Automatic (e)tags generation and incremental updates
Date: Mon, 11 Jan 2021 16:56:17 +0200
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To: Dmitry Gutov <dgutov@yandex.ru>
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> From: Dmitry Gutov <dgutov@yandex.ru>
> Cc: Eli Zaretskii <eliz@gnu.org>, john@yates-sheets.org, philipk@posteo.net,
>  emacs-devel@gnu.org
> Date: Mon, 11 Jan 2021 01:50:13 +0200
> 
> Correction: it's actually writing the updated file to disk which takes 
> half a second. This call:
> 
>    (write-region (point-min) (point-max) buffer-file-name nil 'silent)
> 
> I wonder if *that* could be done asynchronously.

What kind of asynchronicity did you have in mind?

And I'm probbaly missing something, because I don't understand how
Emacs is involved in updating the tags table.