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

2016-01-02 13:50:56
A common convention is that e-mail messages contain a short description of the 
author, called "signature" and the start of this is indicated by a line only 
containing the two characters "--".

Is this convention recommended or discused in some IETF standard? I cannot find 
it in rfc5322.

This convention is very commonly used, but somewhat controversial. Some mail 
program assume that text after a line with only "--" in it are signatures, 
which are by some mail programs shown, when displaying incoming mail, in a 
special signature format. And it is a common mistake by message writers to 
write a line with just "--" in it for other purposes than starting a signature. 
Every mail writer is not an expert on such e-mail conventions. If IETF 
describes this convention in some way, IETF should maybe recommend some kind of 
warning to people who write single lines containing only "--" when this is not 
start of a signature.
Professor emeritus Jacob Palme <jpalme(_at_)dsv(_dot_)su(_dot_)se> (Stockholm 
for more info see URL:

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