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 12:03:55 -0700
> 
> Ok. I just did ls, and yes it forms multi columns.
> 
> However, when i do
> 
> ls | grep xyz
> 
> it doesn't produce the result eshell would. i.e. the multi column  
> produced by ls seems to be a done as display formatting, not as its  
> real output.

Sorry, I don't understand: what's the difference between ``display
formatting'' and ``real output''?  You don't see the output of `ls'
_except_ formatted by it.

> I might be wrong... but i mean the bottom line is that "  
> ls | grep some" have different behavior in unix shell and eshell.

And I see the _same_ behavior, modulo the different defaults about how
many columns to put on one line.