Date: Fri, 20 Feb 2015 19:05:25 -0700 (MST) From: Warren Block <wblock@wonkity.com> To: Kevin Oberman <rkoberman@gmail.com> Cc: Davide Italiano <davide@freebsd.org>, FreeBSD Hackers <freebsd-hackers@freebsd.org>, freebsd-current <freebsd-current@freebsd.org>, Xin LI <d@delphij.net> Subject: Re: default pager (csh) Message-ID: <alpine.BSF.2.11.1502201901120.1851@wonkity.com> In-Reply-To: <CAN6yY1udfAudVeM1KJapTLhnHZwiNtHhTxmk9%2BOh0Xuid6t7-Q@mail.gmail.com> References: <CACYV=-GBD5FmnsQr=KC6Wc9qZ9UAFPQgPmNyS5Jr6Vs2G7dGjA@mail.gmail.com> <54E5232F.3060409@delphij.net> <54E59BF7.40207@freebsd.org> <alpine.BSF.2.11.1502191806400.40355@wonkity.com> <CAN6yY1udfAudVeM1KJapTLhnHZwiNtHhTxmk9%2BOh0Xuid6t7-Q@mail.gmail.com>
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On Thu, 19 Feb 2015, Kevin Oberman wrote: > On Thu, Feb 19, 2015 at 5:10 PM, Warren Block <wblock@wonkity.com> wrote: > On Thu, 19 Feb 2015, Julian Elischer wrote: > > On 2/18/15 3:41 PM, Xin Li wrote: > > The _only_ reason that I can think of is that more(1) does not clear > screen for certain terminals (done with 'ti' and 'te' sequences), > while less(1) when running as less does. > > The less(1) behavior can be annoying to some people (sometimes even > myself when using less to show contents of a file and ^Z to paste > them), and unfortunately quite a few of them also happen to be the > more vocal ones when it comes to a change. > > > I find that behaviour infuriating > > I page down to a place to get some text on the screen to use as a reference, then exit to run a command with that information, and *bam* the info I wanted to > use has gone away. > > > It doesn't do that on csh. Or maybe I figured out how to prevent it long ago and forgot, but all I use is this: > > setenv PAGER "less -RS" > > > You probably did what I used to do. Modify the termcaps/terminfo to eliminate this behavior. See Exorcising the Evil Alternate Screen. > > In the past, FreeBSD disabled this by default. It was changed several years ago, but you can change it back as per the aboved referenced article. I'm pretty sure I have not done that, it would show up in mergemaster. As far as I can remember, less(1) has never done that clear-the-screen thing on FreeBSD, which is why it is so jarring on Linux. From owner-freebsd-hackers@FreeBSD.ORG Sat Feb 21 02:31:31 2015 Return-Path: <owner-freebsd-hackers@FreeBSD.ORG> Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id D4230713; Sat, 21 Feb 2015 02:31:31 +0000 (UTC) Received: from anubis.delphij.net (anubis.delphij.net [64.62.153.212]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "anubis.delphij.net", Issuer "StartCom Class 1 Primary Intermediate Server CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id B375AF69; Sat, 21 Feb 2015 02:31:31 +0000 (UTC) Received: from zeta.ixsystems.com (unknown [12.229.62.2]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by anubis.delphij.net (Postfix) with ESMTPSA id 0B0D22411E; Fri, 20 Feb 2015 18:31:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=delphij.net; s=anubis; t=1424485885; x=1424500285; bh=bwxCaVFUdBNNGDpLFQFiwuwbSCP1IP9moqXS7N7BAQ8=; h=Date:From:Reply-To:To:CC:Subject:References:In-Reply-To; b=v1Ss0TyR4SwoWXzFn6fW04Sfy7h+8/iD7Km1/fEuDXgm1626mAYQ7vk6aNCG1DpQu Q2VDENZtOI+euIEVnr7XD+wug2XqK65sHapSiAqtO9KtDkFq7lFisk2hmq2qaqK1h3 04LT/2mCdmxIcsADV5rWzCOtq7i6kme7lqzjhs6M= Message-ID: <54E7EDFC.70008@delphij.net> Date: Fri, 20 Feb 2015 18:31:24 -0800 From: Xin Li <delphij@delphij.net> Reply-To: d@delphij.net Organization: The FreeBSD Project MIME-Version: 1.0 To: Warren Block <wblock@wonkity.com>, Kevin Oberman <rkoberman@gmail.com> Subject: Re: default pager (csh) References: <CACYV=-GBD5FmnsQr=KC6Wc9qZ9UAFPQgPmNyS5Jr6Vs2G7dGjA@mail.gmail.com> <54E5232F.3060409@delphij.net> <54E59BF7.40207@freebsd.org> <alpine.BSF.2.11.1502191806400.40355@wonkity.com> <CAN6yY1udfAudVeM1KJapTLhnHZwiNtHhTxmk9+Oh0Xuid6t7-Q@mail.gmail.com> <alpine.BSF.2.11.1502201901120.1851@wonkity.com> In-Reply-To: <alpine.BSF.2.11.1502201901120.1851@wonkity.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: Davide Italiano <davide@freebsd.org>, FreeBSD Hackers <freebsd-hackers@freebsd.org>, freebsd-current <freebsd-current@freebsd.org>, Xin LI <d@delphij.net> X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Technical Discussions relating to FreeBSD <freebsd-hackers.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-hackers>, <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers/>; List-Post: <mailto:freebsd-hackers@freebsd.org> List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sat, 21 Feb 2015 02:31:31 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 02/20/15 18:05, Warren Block wrote: >> It doesn't do that on csh. Or maybe I figured out how to prevent >> it long ago and forgot, but all I use is this: >> >> setenv PAGER "less -RS" >> >> >> You probably did what I used to do. Modify the termcaps/terminfo >> to eliminate this behavior. See Exorcising the Evil Alternate >> Screen. >> >> In the past, FreeBSD disabled this by default. It was changed >> several years ago, but you can change it back as per the aboved >> referenced article. > > I'm pretty sure I have not done that, it would show up in > mergemaster. As far as I can remember, less(1) has never done that > clear-the-screen thing on FreeBSD, which is why it is so jarring on > Linux. Not all terminals will clear screen... Cheers, - -- Xin LI <delphij@delphij.net> https://www.delphij.net/ FreeBSD - The Power to Serve! 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