bug#16045: 24.3.50; rgrep can't work

[Eli Zaretskii]

> From: Michael Albinus <michael.albinus@gmx.de>
> Cc: Eli Zaretskii <eliz@gnu.org>,  zijianyue <zijianyue@163.com>,  
> 16045@debbugs.gnu.org
> Date: Thu, 05 Dec 2013 16:10:26 +0100
> 
> Hard for Tramp. It gets a long string as argument of
> `start-file-process-shell-command', which looks like the example in
> <http://thread.gmane.org/gmane.emacs.tramp/8233/focus=8244>. How shall
> Tramp parse it?

Why should it parse it?  Isn't \n\ removed on the remote end before
the shell there interprets it?

> Where does it know from, how long a command line in the remote shell
> could be?

How do you know that in grep.el?