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Message-ID: <3B425069.6040200@Interwoven.com>
Date: Tue, 03 Jul 2001 16:08:25 -0700
From: Sandeep Tamhankar <sandman AT Interwoven DOT com>
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To: "David A. Cobb" <superbiskit AT home DOT com>
CC: Cygwin General MailList <cygwin AT cygwin DOT com>
Subject: Re: Trouble in RXVT with line wrap
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I saw this too when I moved to rxvt.  The problem is that when you 
specify escape characters in your PS1 (primary prompt) bad things like 
this happen.  By default when you start up Cygwin, your PS1 is set to 
show the current directory in your window title bar and your username 
(possibly with host but I can't remember for certain) as your actual 
prompt in green.  Even in the standard Windows console-app window, I get 
all sorts of problems when I have multi-screenline commands and start 
doing Ctrl-a and Ctrl-e.  I ended up living with it for a while, but 
once I started using rxvt (which exploits the cr or cr/lf issue you 
mention), my only choices were to

1. Remove all escape characters from PS1 and make my cwd be at the 
beginning of my prompt.  (Annoying since some paths can be quite long.)
2. Bite the bullet and build zsh, which is the shell I love anyway but 
was otherwise too lazy to build in the past.

I chose a combination of the two.  Zsh lets me have a right-side prompt, 
so that my cwd shows up on the right while my machine-name shows up on 
the left.  If I start typing a command that requires a lot of space, the 
right side prompt goes away for that line as soon as I touch it's first 
character.  Plus I could specify that I only want to see the last n 
directories in my cwd (a feature that I loved in tcsh, but which would 
be far more painful to produce in bash).

Ok, I don't want to start a "favorite-shell" war, so I'll stop now. 
Bottom line: there is something wrong with the way...something renders 
the characters in the window that's screwed up and has been for a while 
(at least on my W2k machine).

-Sandeep

David A. Cobb wrote:

> This could be from any one of the following: rxvt, bash, readline, 
> termcap(?), probably not in cygwin-winsup.
> 
> I run bash in rxvt.  When I type a long line it wraps; however the 
> responsible program evidently sends only <CR>, not <CR><LF>.  Therefore 
> the cursor goes to position 1 in the line I was previously typing.
> 
> If anyone tries this, it happened first when I was at the bottom of the 
> screen; however, I think it happens wherever you are.
> 
> I don't mind prowling in the sources, but I don't know which ones nor do 
> I know what I'm looking for.  And C is about 5th on my list of languages.
> 
> David A. Cobb, Software Engineer, Public Access Advocate, All around 
> nice guy.
> Get my PGP key at
>:<http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=superbiskit>
> Fingerprint=0x{6E3E_DB8C_2E8C_4248_62B2_FE29_08EE_CF0A_3629_E954}
>:<http://wwwkeys.pgp.net:11371/pks/lookup?op=get&search=superbiskit&fingerprint=on> 
> 
> "By God's Grace I am a Christian man, by my actions a great sinner."
> --The Way of a Pilgrim, R. M. French [tr.]
> Potentially Viral Software is any software for which you are not allowed
> to examine the source.  Do not buy or use Potentially Viral Software!
> <---.----!----.----!----.----!----.----!----.----!----.----!----.---->
> 
> 
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-- 
---------------------------------------------
Sandeep V. Tamhankar			
Member of Technical Staff		
Tel: (408) 220-7505
Fax: (408) 774-2002
Email: sandman AT interwoven DOT com

Visit http://www.interwoven.com
Moving Business to the Web	


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