X-Spam-Check-By: sourceware.org Message-ID: <43D635D5.9070204@byu.net> Date: Tue, 24 Jan 2006 07:12:37 -0700 From: Eric Blake User-Agent: Mozilla Thunderbird 1.0.2 (Windows/20050317) MIME-Version: 1.0 To: cygwin@cygwin.com CC: Zach Gelnett Subject: Re: Prompt issue within cygwin References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to Igor Peshansky on 1/23/2006 4:18 PM: >>I'm trying to get this prompt to work: >> >>PS1="\[\033]61;\u@\H\007\]\u@\H \W>" >> >>but the issue there is that the > is duplicated (just like the space >>above, but much more noticable). Any ideas as to why making the title >>modification to use \u@\H instead of \w is causing these issues? > Shoot - the bug is still not fixed upstream; I reproduced it with bash-3.1-1, readline-5.1-1, and rxvt-2.7.10-6. One of these days, I hope to be able to sit down and figure out where readline is going wrong (it is either a readline bug, or a bug in the terminfo database), but it is painful to debug. > > There is a prompt bug in bash that causes it to miscount the number of > displayed characters. One workaround was to append '\[\]' to PS1. Also, > a good habit to get into is to use single quotes in the shell when some > value contains backslashes. Unfortunately, appending \[\] to PS1 no longer works with readline-5.1, since upstream "fixed" readline to recognize that an empty non-printing sequence has no effect on the location of the last non-printing character. However, I think I might be able to recussitate my readline-5.0 hack that forcefully treats a single-line prompt with non-printing characters as though it had a \[\] appended (and I hope I can make it work at a lower level then where empty \[\] is stripped from PS1). It may be a while, but I plan on providing readline-5.1-2 that works around this nasty prompt bug as soon as I can. - -- Life is short - so eat dessert first! Eric Blake ebb9@byu.net volunteer cygwin readline maintainer -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFD1jXV84KuGfSFAYARAkqDAKCGrQ9L51s8L2WJ0+TqgXifgbyIcgCgub9/ EgP3PKUv/8VzxRwWmDvAu84= =16wn -----END PGP SIGNATURE----- -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/