`mm-uu-extract' figure-of-eight syntax (was: Re: isearch show the number of the match)

[Emanuel Berg <incal@dataswamp.org>]

Ruijie Yu via Users list for the GNU Emacs text editor wrote:

> --8<---------------cut here---------------start------------->8---
> isearch-lazy-count is a variable defined in =E2=80=98isearch.el=E2=80=99.
>
> Its value is nil
>
> Show match numbers in the search prompt.
> When both this option and =E2=80=98isearch-lazy-highlight=E2=80=99 are non-=
> nil,
> show the current match number and the total number of matches
> in the buffer (or its restriction), including all hidden matches.
>
>   This variable was introduced, or its default value was changed, in
>   version 27.1 of Emacs.
>   You can customize this variable.
>
> [back]
> --8<---------------cut here---------------end--------------->8---

--8<---------------cut here---------------start------------->8---
Is this a way to make this text appar in `mm-uu-extract'?
--8<---------------cut here---------------end--------------->8---

Okay, so what is that syntax?

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