X-Recipient: archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status: No, hits=-1.0 required=5.0	tests=AWL,BAYES_00,SPF_NEUTRAL,T_RP_MATCHES_RCVD
X-Spam-Check-By: sourceware.org
Message-ID: <4CBC5B4E.3090002@cornell.edu>
Date: Mon, 18 Oct 2010 10:35:58 -0400
From: Ken Brown <kbrown AT cornell DOT edu>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.9) Gecko/20100915 Thunderbird/3.1.4
MIME-Version: 1.0
To: cygwin AT cygwin DOT com
Subject: Re: getting 'clear' to work in Emacs shell
References: <287016 DOT 30328 DOT qm AT web56705 DOT mail DOT re3 DOT yahoo DOT com>
In-Reply-To: <287016.30328.qm@web56705.mail.re3.yahoo.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

On 10/18/2010 9:53 AM, Jeff Rancier wrote:
> GNU Emacs 21.3.1 (i386-msvc-nt5.1.2600) of 2003-03-27 on buffy
> GNU bash, version 3.2.51(24)-release (i686-pc-cygwin)
> CYGWIN_NT-5.1 1.7.7(0.230/5/3) 2010-08-31 09:58
> Microsoft Windows XP Pro - Version 2002, SP3
>
> The 'clear' work's  in a Cygwin Bash session,
>
> C106426 AT USLINY2R86KRP8 ~
> $ alias  clear
> alias clear='cat ~/.cls'
>
> C106426 AT USLINY2R86KRP8 ~
> $ less  .cls
> ESC[2J
> .cls (END)
>
> But doesn't  within Emacs:
>
> C-z runs the command  shell
>     which is an interactive compiled Lisp function in `shell'.
> (shell&optional BUFFER)
>
> All I get within an  Emacs shell session is the following, without clearing the
> screen.  Is there  some envionment variable I need to set here?
>
>
> bash-3.2$  clear
> [2J
> bash-3.2$

I'm not sure what you're expecting here.  Do you want emacs to delete 
what's in the *shell* buffer?  Or just scroll it so that nothing is 
visible but the prompt?  FWIW, typing 'clear' in an emacs shell buffer 
under Linux doesn't have any visible effect either.  (Here it runs 
/usr/bin/clear.)  So I don't think this has anything to do with Cygwin.

Ken

Ken

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple