bug#8531: 24.0.50; shell-quote-argument shouldn't escape special characters

[Eli Zaretskii]

> From: Glenn Morris <rgm@gnu.org>
> Date: Thu, 21 Apr 2011 19:14:58 -0400
> Cc: 8531@debbugs.gnu.org
> 
> Thierry Volpiatto wrote:
> 
> > So yes the problem is related only to eshell.
> 
> Why do you want/need to call shell-quote-argument inside eshell?

He doesn't.  But a literal Vid\éos (with the backslash typed by hand)
doesn't work with Eshell, either.  Doesn't Eshell support the standard
shell feature whereby a non-special character escaped by a backslash
stands for itself?