Subject: Re: [ietf-822] "--" first in lines to indicate start of signature

From: Florian Weimer <[email-masked]>
Date: Fri, 01 Jul 2016 23:23:33 +0200

* Murray S. Kucherawy:

> What other uses of "--" on a line by itself are there?  The only thing I
> can think of is ASCII art.

It could be part of a diff which changes or removes a line which only
contains a “-”.