bug#699: grep in eshell incorrect

[Eli Zaretskii]

> Cc: 699@emacsbugs.donarmstrong.com,
>  bug-gnu-emacs@gnu.org
> From: xah lee <xah@xahlee.org>
> Date: Tue, 12 Aug 2008 11:40:25 -0700
> 
> So, possibly the eshell's "ls" command forming multiple columns is a  
> bad design. Because after all it is supposed to emulate the unix  
> shell behavior and "ls | grep xyz" is common idiom.

Yes, it _is_ supposed to emulate a Unix shell.  But I just tried that
same pipe both on GNU/Linux and on MS-Windows, and in both cases "ls"
still forms multiple columns even in a pipe.  So I don't see anything
wrong with how Eshell's "ls" works.