Subject that ends with UTF-8, 85 or A0 e.g.:

[Ken Moffat]

On Wed, Aug 03, 2022 at 10:07:37AM +0900, Kenichi Asai wrote:
> > This e-mail has υ at the end of Subject.  I will send it out.
> 
> Somehow, the previous e-mail did not contain the replacement character
> at the end of Subject.  I don't know why.  Because the e-mail was
> quoted perhaps?
> 
> [text/plain, quoted, utf-8, 1.3K]
> 
> Bastian's e-mail is 7bit (as is my original e-mail):
> 
> [text/plain, 7bit, us-ascii, 0.7K]
> 
> I try to send this e-mail out in 7bit mode (with υ at the end of
> Subject).
> 

Why would you do that when the discussion seems to be about UTF-8
glyphs ?  I'm curious.

For years I have sent as  as us-ascii:iso-8859-1:iso-8859-15:utf-8

> > * Does the problem occur if you use a different editor?
> 
> Yes.  The same thing happens with:
> 
> set editor="emacs %s"
> 
> -- 
> Kenichi Asai

ĸen
-- 
(Rincewind) was pretty sure there was no way you could get a cross
between a human and a sheep.  If there was, people would definitely
have found out by now.            -- The Last Continent