From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Speedup of display of long and truncated lines Date: Fri, 19 Aug 2022 09:49:42 +0300 Message-ID: <8335dsg22h.fsf@gnu.org> References: <83edxkmdy3.fsf@gnu.org> <66bbbb9598b1b1ce66d2@heytings.org> <8335e0m9zp.fsf@gnu.org> <66bbbb95989005dd3e92@heytings.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="17383"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Gregory Heytings Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Aug 19 08:53:32 2022 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oOvsp-0004NA-Rl for ged-emacs-devel@m.gmane-mx.org; Fri, 19 Aug 2022 08:53:32 +0200 Original-Received: from localhost ([::1]:52260 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oOvsn-0007YO-Tj for ged-emacs-devel@m.gmane-mx.org; Fri, 19 Aug 2022 02:53:29 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:32912) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oOvpF-0006er-L5 for emacs-devel@gnu.org; Fri, 19 Aug 2022 02:49:50 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:59360) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oOvpF-0006U0-2k; Fri, 19 Aug 2022 02:49:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=beXhDVp/zthtkpW6tFUrXUjTwpU+I+yWjyxLAqBc2vM=; b=QCl0ghNKBoJm ffGoH/ot5pGbgSR/OeDnRMHO4jMswoqzjHEGva29I8ejLjHLDhV2mAJA89sz2fdKgP4z9RDNUu0IQ fN3amkU3/3BTD2rQz25SBjNKKzIFRKu3rCDBI6+V+lW+xH9UXbDiuHun70/6DKRvQWuobhzQMMBhJ RPUG/jFzOo7N8WjcVFZ8zA1bdhq0cSpkiFAz5J7rXSQBwcvsf88vrGTm072Rfw0gcMYmjzshj/aJU trcLTZQS2fhjzfmESm5Ak1M+mDWycG5aw66EjzRlefsnWUrB0JI6TS+KiyxituPr1WmoB5CkRSOPF 5c4fLdwWz6vOSemrM/q1Jw==; Original-Received: from [87.69.77.57] (port=4229 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oOvpE-0005K4-EF; Fri, 19 Aug 2022 02:49:48 -0400 In-Reply-To: <66bbbb95989005dd3e92@heytings.org> (message from Gregory Heytings on Sat, 13 Aug 2022 15:52:56 +0000) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:293626 Archived-At: > Date: Sat, 13 Aug 2022 15:52:56 +0000 > From: Gregory Heytings > cc: emacs-devel@gnu.org > > > >>> I didn't yet look at C-v/M-v, mainly because I don't have examples of > >>> files with long lines that have enough long lines to justify movement > >>> by window-full. (I could, of course, produce such files myself, but > >>> the question is: do such files exist in Real Life, enough to make the > >>> scrolling commands important in these cases? Examples of such files, > >>> if they exist, are welcome.) > >> > >> Yes, such files exist in Real Life. An example are database dumps, in > >> which you can have hundreds of very long lines. > > > > Thanks, I'd appreciate any pointers to where I could download examples > > of such files. > > > > I cannot share such an example myself alas, the real-life databases I have > access to contain business-sensitive data. But you can easily create a > similar file with the following script. Its two parameters are the number > of tables in the database and the number of elements in each table. 100 > and 10000 are a good starting point (for what is still a small database). > > #!/bin/bash > for i in $(seq 1 $1) > do > echo -n "INSERT INTO TABLE_$i VALUES " > for j in $(seq 1 $2) > do > echo -n "(10,'100','QWERTY','Foo Bar Baz',50,4852,$j)" > (($j == $2)) && echo -n ';' || echo -n ',' > done > echo > done Which major mode is used for visiting such files?