From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.126.187]) by sourceware.org (Postfix) with ESMTPS id 8894A384C007 for ; Fri, 28 Aug 2020 08:33:48 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 8894A384C007 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=towo.net Authentication-Results: sourceware.org; spf=none smtp.mailfrom=towo@towo.net Received: from [192.168.178.45] ([95.90.245.244]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MWhxY-1k4y6E3r7A-00X1tg for ; Fri, 28 Aug 2020 10:33:47 +0200 Subject: Re: Mintty text glitches when using up key To: cygwin@cygwin.com References: From: Thomas Wolff X-Tagtoolbar-Keys: D20200828103345764 Message-ID: <4214ab62-9f2c-0c9d-26f1-5fff8ec2c376@towo.net> Date: Fri, 28 Aug 2020 10:33:45 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K1:Hqks5zqtM5vus2qr9KqwtaUCGlY9sqNcn5DFGxwu/LBnT4EgSTD ONtSwXaR/ECUZfsY/igC1TA3xE9R7saunwcmMkfxP5AfE2UJ0mcct2uoELs1Xtt2sKOzy4L DEu+sTmkXC2kT9iq5/8uSB0SQMH31dSqEc/U8lrEMis/V9XRHEmSuR9IQYhvHodSCOMnarh 841bVDlz8SR3vEgcTF2rg== X-UI-Out-Filterresults: notjunk:1;V03:K0:3viGWlj4yeQ=:sZ2V8iMRGhiO/OhSUzLfit 2Y6COid7DFuLdRTAN19rF2yWAS2EW99N80wx5nTeHpktxlp5TYsVHLEU92XZOqzdJ0+zOwu5z YiaStvaQESqW820sNMXsM6mIQSa+2iBsZksbTf/4csCpmig7LPt3LqAdEG9Vpli4sY1H4fx1+ EBh7nZ26gkqXxqVIvejSnpVcEPGWpDu5+Yz1DF1w+lh/smaPeSnwlJsdt1VWrEnlbqJZttdYY 9oDVYet3euNHBnhj0IivN3qYP/3VYbaBzEBP2zfzsKlbPjgxtlzJVqOg5aisbqk6FDTCsPhHn kbBYyMCCMPs7+eIETwxNbhm9FB50+xUVDXAKUWxlC9BYReLHBckGbNFIMcBb/VgxVDnJMN5NF Vcajjbc/3O7R0qT1keVqa3SOjRJUt+SManiVIY7An4DkJ0k8UCJsTo0ZR/CF/dFiQDmThTuAn nyndSnMV9DTiGnyCGiovL2bqnmg3WbKpKdIeONJP+xz3AI+kGrYMVPPA6byBIzMO+fPxJp0Cy b9xYsPpt7E3oILGMTz8QWMMRbDahTOrAm6wR/EVkgibU26R8bu++j2XGtsfyocCBcoiSfXW8X hNUKEhPrK7ed89blsH1lMAPllXiAc0lEb5x03jmyynSZIgoKcINqOFdVcrAjW8nXuhLAbY4xr QWHLNyi98Cs6rU9uphBD0A0sQOZSvIFNt0scNJ9SfnDJj35D3CMFDQSssSJu/tGxwFmNF2ykD igrPyuR+aehUpQQw7SQpauHKuqPjVXXpMMdkdBHKHCLuvHPs1P50Ibj/8N/9RVwGZ+AoVbBkD PZu8h8HVnUxg9Y01tZqoOHxDBGdLEeRGlbSmwMskSzh7A3TVKNh6NLhJsxEQxqJaKJbXvDo X-Spam-Status: No, score=-6.3 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Aug 2020 08:33:50 -0000 Am 27.08.2020 um 21:55 schrieb Brian Inglis: > On 2020-08-27 10:55, Hamish McIntyre-Bhatty via Cygwin wrote: >> For a while I've noticed that if I run a long command (usually has to >> wrap to next line down), that my Mintty session often becomes all messed >> up if I use the up arrow keys to try and run it again later. Has anyone >> else experienced this? This description is quite fuzzy. It could be that you resized the window while a program was running, or that some background process sends output to the screen asynchronously. In such cases, the shell loses track of the cursor position and line editing fails. That's not a terminal issue. >> Another, probably unrelated, observation is that if a command produces a >> lot of long lines that get wrapped, if I make the Mintty window wider, >> the lines stay wrapped. This behaves much like other terminal emulators >> I used in the past, including gnome-terminal. At some point, this was >> fixed in gnome-terminal, so I wonder if that fix would be relevant here too. This was requested to mintty already (https://github.com/mintty/mintty/issues/82) but it's not a traditional terminal feature, so if some terminals have added it as an enhancement, that's not a "fix". Thomas >> >> Unfortunately I know precious little about how terminal emulation works >> so I'm not likely to be able to provide a fix, but I'm interested to see >> if anyone else has experienced this or has found workarounds. It seems >> to happen with both 32-bit and 64-bit Cygwin for me. > Not a problem with long lines - often find myself editing a few lines down in a > few hundred characters long after some iterations - I type without thought: > > $ history | tail > ~/bin/script > $ vim + !$ > > Problem is when you type ahead too fast, hit modifier keys and/or special > functions by mistake in the wrong place, and/or when something else is running > in the background, or the system is loaded, and mintty does not grab the whole > escape sequence to process; often just running reset will restore sanity. > > [For real fun with mintty, type: $ echo `/usr/bin/env /usr/bin/python` > You can kill python from another terminal window or TaskMgr.] >