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Re: cut here markers for code snippets in mail

From: Eric Abrahamsen
Subject: Re: cut here markers for code snippets in mail
Date: Thu, 26 Aug 2021 14:41:41 -0700
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Andreas Reuleaux <> writes:

> Hi,
> I have seen people highlighting code snippets in mail
> with "cut here markers": some ascii art for scissors, "cut here",
> "start", "end", ..., like so:
> rm -f /etc/fonts/conf.d/70-no-bitmaps.conf
> ln -f -s /usr/share/fontconfig/conf.avail/70-yes-bitmaps.conf  
> /etc/fonts/conf.d
> which is kind of nice, and simple (as I don't want to get into
> composing html mails with org-mime or the like).
> I get to see them "green on yellow" in gnus (once I have received
> such mails), or when in draft status (in my drafts folder).
> Two questions (at least):
> For one thing, I wonder if this behaviour is anywhere
> documented/specified/explained in more detail?
> And then: I would like to see my code green-on-yellow snippets in
> message mode as well (when composing mail), or at least as a toggle:
> see how my mail would look to the recipient.
> And how are people actually using these "cut here markers":
> insert them by hand, as I did above? Or is there some automatic support
> for this hidden somewhere? - Or any other mechanisms for
> such code snippets highlighting - in org mode nevertheless perhaps [?]:
> I don't want to send html mails, but maybe org-mime / orgmsg / etc.
> are useful for composing mails?

The command to run is `message-mark-inserted-region', bound to "C-c M-m"
by default in message-mode. It's not terribly discoverable, but it is
there in the "Message" menu.

I don't believe there's currently any way to get a "preview" in
message-mode, of how your outgoing message will look to the recipient.

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