Lars Ingebrigtsen <larsi@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 45042) by debbugs.gnu.org; 26 Jan 2021 15:07:31 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Jan 26 10:07:31 2021 Received: from localhost ([127.0.0.1]:42407 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1l4PwJ-0000V2-Cy for submit <at> debbugs.gnu.org; Tue, 26 Jan 2021 10:07:31 -0500 Received: from eggs.gnu.org ([209.51.188.92]:38108) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1l4PwG-0000Uo-Fy for 45042 <at> debbugs.gnu.org; Tue, 26 Jan 2021 10:07:29 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:52218) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1l4Pw7-0004nn-NK; Tue, 26 Jan 2021 10:07:19 -0500 Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:2887 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from <eliz@HIDDEN>) id 1l4Pw3-0007Il-7o; Tue, 26 Jan 2021 10:07:18 -0500 Date: Tue, 26 Jan 2021 17:07:25 +0200 Message-Id: <83h7n320uq.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Ed Avis <ed.avis@HIDDEN> In-Reply-To: <PH0PR11MB48875CF654B5D7DFFDA30E359DBC9@HIDDEN> (message from Ed Avis on Tue, 26 Jan 2021 07:21:27 +0000) Subject: Re: bug#45042: 27.1; emacs -nw on Windows does not always update cursor position on screen References: <PH0PR11MB4887DBC51723BB8DE454EB719DF10@HIDDEN> <83v9dgd7jz.fsf@HIDDEN>,<87pn1vqm68.fsf@HIDDEN> <PH0PR11MB48870642BCE55776CD3C868C9DBE9@HIDDEN>, <83blde4ckz.fsf@HIDDEN> <PH0PR11MB48871260CAF148A1E7D5F4029DBD9@HIDDEN>, <83eei92fsh.fsf@HIDDEN> <PH0PR11MB48875CF654B5D7DFFDA30E359DBC9@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 45042 Cc: larsi@HIDDEN, 45042 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Ed Avis <ed.avis@HIDDEN> > CC: "larsi@HIDDEN" <larsi@HIDDEN>, > "45042 <at> debbugs.gnu.org"<45042 <at> debbugs.gnu.org> > Date: Tue, 26 Jan 2021 07:21:27 +0000 > > Thanks for the explanation. So although Emacs uses escape sequences to move the cursor on Unix-like > platforms, the Windows build uses the native console API. What surprised me was that the cursor position > does update for up and down movements, and it does update horizontally at the same time. It just doesn't > move if you do a horizontal movement by itself. If the cursor movement commands aren't supported by > PuTTY or by OpenSSH server+client, I would expect to see neither kind of movement working. I don't know the answer, but I'm quite sure that if you look at the sources of the respective packages, you will see the reason. It is also possible that in cases where it worked Emacs decided to move the cursor by redrawing the following or the preceding character, instead of calling the console API functions. (These are redisplay optimizations Emacs sometimes does.)
bug-gnu-emacs@HIDDEN:bug#45042; Package emacs.
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From: Ed Avis <ed.avis@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#45042: 27.1; emacs -nw on Windows does not always update
cursor position on screen
Thread-Topic: bug#45042: 27.1; emacs -nw on Windows does not always update
cursor position on screen
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Thanks for the explanation. So although Emacs uses escape sequences to mov=
e the cursor on Unix-like platforms, the Windows build uses the native cons=
ole API. What surprised me was that the cursor position does update for up=
and down movements, and it does update horizontally at the same time. It =
just doesn't move if you do a horizontal movement by itself. If the cursor=
movement commands aren't supported by PuTTY or by OpenSSH server+client, I=
would expect to see neither kind of movement working.
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Thanks for the explanation. So although Emacs uses escape sequences t=
o move the cursor on Unix-like platforms, the Windows build uses the native=
console API. What surprised me was that the cursor position does upd=
ate for up and down movements, and it does
update horizontally at the same time. It just doesn't move if you do=
a horizontal movement by itself. If the cursor movement commands are=
n't supported by PuTTY or by OpenSSH server+client, I would expect to see n=
either kind of movement working.</div>
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bug-gnu-emacs@HIDDEN:bug#45042; Package emacs.
Full text available.Received: (at 45042) by debbugs.gnu.org; 25 Jan 2021 15:32:39 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Jan 25 10:32:39 2021 Received: from localhost ([127.0.0.1]:39663 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1l43r5-0007Mx-8h for submit <at> debbugs.gnu.org; Mon, 25 Jan 2021 10:32:39 -0500 Received: from eggs.gnu.org ([209.51.188.92]:38382) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1l43r0-0007Mg-PL for 45042 <at> debbugs.gnu.org; Mon, 25 Jan 2021 10:32:38 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:52988) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1l43qs-0007gF-9J; Mon, 25 Jan 2021 10:32:26 -0500 Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:2999 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from <eliz@HIDDEN>) id 1l43qp-0008Hg-3a; Mon, 25 Jan 2021 10:32:23 -0500 Date: Mon, 25 Jan 2021 17:32:30 +0200 Message-Id: <83eei92fsh.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Ed Avis <ed.avis@HIDDEN> In-Reply-To: <PH0PR11MB48871260CAF148A1E7D5F4029DBD9@HIDDEN> (message from Ed Avis on Mon, 25 Jan 2021 08:00:00 +0000) Subject: Re: bug#45042: 27.1; emacs -nw on Windows does not always update cursor position on screen References: <PH0PR11MB4887DBC51723BB8DE454EB719DF10@HIDDEN> <83v9dgd7jz.fsf@HIDDEN>,<87pn1vqm68.fsf@HIDDEN> <PH0PR11MB48870642BCE55776CD3C868C9DBE9@HIDDEN>, <83blde4ckz.fsf@HIDDEN> <PH0PR11MB48871260CAF148A1E7D5F4029DBD9@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 45042 Cc: larsi@HIDDEN, 45042 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Ed Avis <ed.avis@HIDDEN> > CC: "larsi@HIDDEN" <larsi@HIDDEN>, > "45042 <at> debbugs.gnu.org"<45042 <at> debbugs.gnu.org> > Date: Mon, 25 Jan 2021 08:00:00 +0000 > > The problem with the cursor movement not updating doesn't just happen under Alacritty. I can also > reproduce it using an ssh server on Windows, by sshing to the machine and running emacs -nw. The ssh > client can be PuTTY or the Windows port of OpenSSH running in the Windows command prompt. Unsetting > TERM does not appear to make a difference in any of these cases. PuTTY emulates a Unix terminal with terminfo database, and thus expects the program to send escape sequences to move the cursor. If the OpenSSH client used by Windows does the same, then it means these two emulators aren't currently supported by Emacs on Windows, because Emacs assumes a native Windows console. Patches to add support for curses-like escape sequences are welcome.
bug-gnu-emacs@HIDDEN:bug#45042; Package emacs.
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From: Ed Avis <ed.avis@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#45042: 27.1; emacs -nw on Windows does not always update
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Thread-Topic: bug#45042: 27.1; emacs -nw on Windows does not always update
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The problem with the cursor movement not updating doesn't just happen under=
Alacritty. I can also reproduce it using an ssh server on Windows, by ssh=
ing to the machine and running emacs -nw. The ssh client can be PuTTY or t=
he Windows port of OpenSSH running in the Windows command prompt. Unsettin=
g TERM does not appear to make a difference in any of these cases.
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The problem with the cursor movement not updating doesn't just happen under=
Alacritty. I can also reproduce it using an ssh server on Windows, b=
y sshing to the machine and running emacs -nw. The ssh client can be =
PuTTY or the Windows port of OpenSSH running
in the Windows command prompt. Unsetting TERM does not appear to mak=
e a difference in any of these cases.</div>
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bug-gnu-emacs@HIDDEN:bug#45042; Package emacs.
Full text available.Received: (at 45042) by debbugs.gnu.org; 24 Jan 2021 14:46:44 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun Jan 24 09:46:44 2021 Received: from localhost ([127.0.0.1]:36089 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1l3gf6-00081O-4o for submit <at> debbugs.gnu.org; Sun, 24 Jan 2021 09:46:44 -0500 Received: from eggs.gnu.org ([209.51.188.92]:54892) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1l3gf2-00081B-VS for 45042 <at> debbugs.gnu.org; Sun, 24 Jan 2021 09:46:42 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:59609) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1l3geu-000615-3Q; Sun, 24 Jan 2021 09:46:32 -0500 Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:3453 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from <eliz@HIDDEN>) id 1l3get-0003kl-Ev; Sun, 24 Jan 2021 09:46:31 -0500 Date: Sun, 24 Jan 2021 16:46:36 +0200 Message-Id: <83blde4ckz.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Ed Avis <ed.avis@HIDDEN> In-Reply-To: <PH0PR11MB48870642BCE55776CD3C868C9DBE9@HIDDEN> (message from Ed Avis on Sun, 24 Jan 2021 07:22:26 +0000) Subject: Re: bug#45042: 27.1; emacs -nw on Windows does not always update cursor position on screen References: <PH0PR11MB4887DBC51723BB8DE454EB719DF10@HIDDEN> <83v9dgd7jz.fsf@HIDDEN>,<87pn1vqm68.fsf@HIDDEN> <PH0PR11MB48870642BCE55776CD3C868C9DBE9@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 45042 Cc: larsi@HIDDEN, 45042 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Ed Avis <ed.avis@HIDDEN> > CC: "45042 <at> debbugs.gnu.org" <45042 <at> debbugs.gnu.org> > Date: Sun, 24 Jan 2021 07:22:26 +0000 > > The problem still happens when I start the Alacritty terminal emulator on Windows, and > > >set TERM= > >emacs -nw I see quite a few problems reported against Alacritty, so maybe this is another one. In any case, as I said: someone who has access to Alacritty will have to debug this and find out what goes wrong. > (I think on Windows there is no difference between setting TERM to an empty string and unsetting it.) There is a difference, but cmd.exe doesn't let you do the former.
bug-gnu-emacs@HIDDEN:bug#45042; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#45042; Package emacs.
Full text available.Lars Ingebrigtsen <larsi@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 45042) by debbugs.gnu.org; 23 Jan 2021 23:16:28 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Jan 23 18:16:28 2021 Received: from localhost ([127.0.0.1]:35591 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1l3S8p-0005hZ-Oj for submit <at> debbugs.gnu.org; Sat, 23 Jan 2021 18:16:28 -0500 Received: from quimby.gnus.org ([95.216.78.240]:57084) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <larsi@HIDDEN>) id 1l3S8o-0005bv-7q for 45042 <at> debbugs.gnu.org; Sat, 23 Jan 2021 18:16:26 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=VuBjIqIJrtMfMacsq7xMyuaseXzV5n9UI9Cmo0xhzOc=; b=KXQUJrBAuOQ5pu+nOwFuMZIiqo sfi6ks/K2Ten1FuqteUUi5MJZm51f4aBM3sBOWk7hk1OEX0GG08faRTTSXJ/u6v0ev46YZRfO4FVE 5zbauBFncaaIqMc4OT0HOcSIZA5WHbJ8+dli9o8YI1lNe/M/BDhnS2oPppWpGhFmwyuM=; Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from <larsi@HIDDEN>) id 1l3S8e-0006cK-Bg; Sun, 24 Jan 2021 00:16:18 +0100 From: Lars Ingebrigtsen <larsi@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#45042: 27.1; emacs -nw on Windows does not always update cursor position on screen References: <PH0PR11MB4887DBC51723BB8DE454EB719DF10@HIDDEN> <83v9dgd7jz.fsf@HIDDEN> X-Now-Playing: Arthur Russell's _Sketches For World Of Echo (June 25 1984 Live At Ei)_: "Sunlit Water (Live 6-24-84)" Date: Sun, 24 Jan 2021 00:16:15 +0100 In-Reply-To: <83v9dgd7jz.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 05 Dec 2020 09:40:48 +0200") Message-ID: <87pn1vqm68.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Eli Zaretskii <eliz@HIDDEN> writes: >> Is there something Emacs can do to make sure the cursor >> position on screen is always updated? > > Someone who has access to such systems will have debug the functions > in w32console.c and see w [...] Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 45042 Cc: 45042 <at> debbugs.gnu.org, Ed Avis <ed.avis@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> Is there something Emacs can do to make sure the cursor >> position on screen is always updated? > > Someone who has access to such systems will have debug the functions > in w32console.c and see what isn't working in those cases. As you can > see, we just use SetConsoleCursorPosition, an API that is supposed to > be agnostic to the terminal emulator running, as long as it emulates > the w32 console well enough. > > Or maybe these terminal emulators set TERM to some value that dupes > Emacs into incorrect operation? If so, try unsetting TERM. Ed, did you try unsetting TERM? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no
bug-gnu-emacs@HIDDEN:bug#45042; Package emacs.
Full text available.Received: (at 45042) by debbugs.gnu.org; 5 Dec 2020 07:41:21 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Dec 05 02:41:21 2020 Received: from localhost ([127.0.0.1]:46483 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1klSC1-0003H9-I1 for submit <at> debbugs.gnu.org; Sat, 05 Dec 2020 02:41:21 -0500 Received: from eggs.gnu.org ([209.51.188.92]:59128) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1klSBx-0003Gu-Gk for 45042 <at> debbugs.gnu.org; Sat, 05 Dec 2020 02:41:20 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:42483) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1klSBo-0003tV-Qf; Sat, 05 Dec 2020 02:41:08 -0500 Received: from [176.228.60.248] (port=3815 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from <eliz@HIDDEN>) id 1klSBk-000416-4I; Sat, 05 Dec 2020 02:41:06 -0500 Date: Sat, 05 Dec 2020 09:40:48 +0200 Message-Id: <83v9dgd7jz.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Ed Avis <ed.avis@HIDDEN> In-Reply-To: <PH0PR11MB4887DBC51723BB8DE454EB719DF10@HIDDEN> (message from Ed Avis on Fri, 4 Dec 2020 18:53:28 +0000) Subject: Re: bug#45042: 27.1; emacs -nw on Windows does not always update cursor position on screen References: <PH0PR11MB4887DBC51723BB8DE454EB719DF10@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 45042 Cc: 45042 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Ed Avis <ed.avis@HIDDEN> > Date: Fri, 4 Dec 2020 18:53:28 +0000 > > Is there something Emacs can do to make sure the cursor > position on screen is always updated? Someone who has access to such systems will have debug the functions in w32console.c and see what isn't working in those cases. As you can see, we just use SetConsoleCursorPosition, an API that is supposed to be agnostic to the terminal emulator running, as long as it emulates the w32 console well enough. Or maybe these terminal emulators set TERM to some value that dupes Emacs into incorrect operation? If so, try unsetting TERM.
bug-gnu-emacs@HIDDEN:bug#45042; Package emacs.
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I installed the GNU Emacs build for Microsoft Windows x86_64 from the
GNU FTP site. Rather than the graphical interface I am running it in
text mode using 'emacs.exe -nw'. If run from the ancient Windows
command prompt (cmd.exe) this works well. But in other terminal
emulators there is a strange problem where the cursor position is not
always updated.
For example, run Emacs inside the Alacritty terminal emulator. Moving
point up and down with the arrow keys (or C-p and C-n) works, but moving
left and right (with arrows, C-b, C-f) does not update the visible
cursor on screen. Point did move, as you can see by typing some
characters, and the visible cursor will update when you move up or down,
but horizontal movement doesn't seem to display.
If this were just one terminal emulator I would not suggest it as a bug
in Emacs, but the same thing happens when running an ssh server on the
Windows machine and running emacs -nw over ssh from another Windows
machine. The cursor movement problem happens whether the ssh client is
OpenSSH (ssh.exe) running in cmd.exe, or ssh.exe running in Alacritty,
or from PuTTY (which combines ssh client and terminal emulator).
Quick experiments with setting TERM to 'vt100' instead of 'xterm' did
not find a fix. Is there something Emacs can do to make sure the cursor
position on screen is always updated?
In GNU Emacs 27.1 (build 1, x86_64-w64-mingw32)
of 2020-08-21 built on CIRROCUMULUS
Repository revision: 86d8d76aa36037184db0b2897c434cdaab1a9ae8
Repository branch: HEAD
Windowing system distributor 'Microsoft Corp.', version 10.0.18363
System Description: Microsoft Windows 10 Pro (v10.0.1909.18363.1198)
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Configured using:
'configure --without-dbus --host=3Dx86_64-w64-mingw32
--without-compress-install 'CFLAGS=3D-O2 -static''
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY W32NOTIFY ACL GNUTLS LIBXML2
HARFBUZZ ZLIB TOOLKIT_SCROLL_BARS MODULES THREADS JSON PDUMPER LCMS2 GMP
Important settings:
value of $LANG: ENG
locale-coding-system: cp1252
Major mode: Fundamental
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
buffer-read-only: t
line-number-mode: t
transient-mark-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs
format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg
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lisp-float-type mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win
w32-vars term/common-win tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode elisp-mode lisp-mode
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term/tty-colors frame minibuffer cl-generic cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms
cp51932 hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese composite charscript charprop case-table epa-hook
jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote threads w32notify w32 lcms2 multi-tty make-network-process
emacs)
Memory information:
((conses 16 43590 9530)
(symbols 48 6020 1)
(strings 32 15201 1632)
(string-bytes 1 502900)
(vectors 16 6718)
(vector-slots 8 78458 6176)
(floats 8 18 317)
(intervals 56 187 0)
(buffers 1000 12))
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Content-Type: text/html; charset="iso-8859-1"
<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
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I installed the GNU Emacs build for Microsoft Windows x86_64 from the
<div>GNU FTP site. Rather than the graphical interface I am running i=
t in</div>
<div>text mode using 'emacs.exe -nw'. If run from the ancient Windows=
</div>
<div>command prompt (cmd.exe) this works well. But in other terminal<=
/div>
<div>emulators there is a strange problem where the cursor position is not<=
/div>
<div>always updated.</div>
<div><br>
</div>
<div>For example, run Emacs inside the Alacritty terminal emulator. M=
oving</div>
<div>point up and down with the arrow keys (or C-p and C-n) works, but movi=
ng</div>
<div>left and right (with arrows, C-b, C-f) does not update the visible</di=
v>
<div>cursor on screen. Point did move, as you can see by typing some<=
/div>
<div>characters, and the visible cursor will update when you move up or dow=
n,</div>
<div>but horizontal movement doesn't seem to display.</div>
<div><br>
</div>
<div>If this were just one terminal emulator I would not suggest it as a bu=
g</div>
<div>in Emacs, but the same thing happens when running an ssh server on the=
</div>
<div>Windows machine and running emacs -nw over ssh from another Windows</d=
iv>
<div>machine. The cursor movement problem happens whether the ssh cli=
ent is</div>
<div>OpenSSH (ssh.exe) running in cmd.exe, or ssh.exe running in Alacritty,=
</div>
<div>or from PuTTY (which combines ssh client and terminal emulator).</div>
<div><br>
</div>
<div>Quick experiments with setting TERM to 'vt100' instead of 'xterm' did<=
/div>
<div>not find a fix. Is there something Emacs can do to make sure the=
cursor</div>
<div>position on screen is always updated?</div>
<div><br>
</div>
<div><br>
</div>
<div>In GNU Emacs 27.1 (build 1, x86_64-w64-mingw32)</div>
<div> of 2020-08-21 built on CIRROCUMULUS</div>
<div>Repository revision: 86d8d76aa36037184db0b2897c434cdaab1a9ae8</div>
<div>Repository branch: HEAD</div>
<div>Windowing system distributor 'Microsoft Corp.', version 10.0.18363</di=
v>
<div>System Description: Microsoft Windows 10 Pro (v10.0.1909.18363.1198)</=
div>
<div><br>
</div>
<div>Recent messages:</div>
<div>For information about GNU Emacs and the GNU system, type C-h C-a.</div=
>
<div><br>
</div>
<div>Configured using:</div>
<div> 'configure --without-dbus --host=3Dx86_64-w64-mingw32</div>
<div> --without-compress-install 'CFLAGS=3D-O2 -static''</div>
<div><br>
</div>
<div>Configured features:</div>
<div>XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY W32NOTIFY ACL GNUTLS LIBXML2</=
div>
<div>HARFBUZZ ZLIB TOOLKIT_SCROLL_BARS MODULES THREADS JSON PDUMPER LCMS2 G=
MP</div>
<div><br>
</div>
<div>Important settings:</div>
<div> value of $LANG: ENG</div>
<div> locale-coding-system: cp1252</div>
<div><br>
</div>
<div>Major mode: Fundamental</div>
<div><br>
</div>
<div>Minor modes in effect:</div>
<div> tooltip-mode: t</div>
<div> global-eldoc-mode: t</div>
<div> electric-indent-mode: t</div>
<div> mouse-wheel-mode: t</div>
<div> tool-bar-mode: t</div>
<div> menu-bar-mode: t</div>
<div> file-name-shadow-mode: t</div>
<div> global-font-lock-mode: t</div>
<div> auto-composition-mode: t</div>
<div> auto-encryption-mode: t</div>
<div> auto-compression-mode: t</div>
<div> buffer-read-only: t</div>
<div> line-number-mode: t</div>
<div> transient-mark-mode: t</div>
<div><br>
</div>
<div>Load-path shadows:</div>
<div>None found.</div>
<div><br>
</div>
<div>Features:</div>
<div>(shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs<=
/div>
<div>format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg=
</div>
<div>epg-config gnus-util rmail rmail-loaddefs text-property-search time-da=
te</div>
<div>subr-x seq byte-opt gv bytecomp byte-compile cconv mm-decode mm-bodies=
</div>
<div>mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loadde=
fs</div>
<div>cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-uti=
ls</div>
<div>term/w32console tooltip eldoc electric uniquify ediff-hook vc-hooks</d=
iv>
<div>lisp-float-type mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win=
</div>
<div>w32-vars term/common-win tool-bar dnd fontset image regexp-opt fringe<=
/div>
<div>tabulated-list replace newcomment text-mode elisp-mode lisp-mode</div>
<div>prog-mode register page tab-bar menu-bar rfn-eshadow isearch timer</di=
v>
<div>select scroll-bar mouse jit-lock font-lock syntax facemenu font-core</=
div>
<div>term/tty-colors frame minibuffer cl-generic cham georgian utf-8-lang</=
div>
<div>misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-m=
s</div>
<div>cp51932 hebrew greek romanian slovak czech european ethiopic indian</d=
iv>
<div>cyrillic chinese composite charscript charprop case-table epa-hook</di=
v>
<div>jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice loaddefs=
</div>
<div>button faces cus-face macroexp files text-properties overlay sha1 md5<=
/div>
<div>base64 format env code-pages mule custom widget hashtable-print-readab=
le</div>
<div>backquote threads w32notify w32 lcms2 multi-tty make-network-process</=
div>
<div>emacs)</div>
<div><br>
</div>
<div>Memory information:</div>
<div>((conses 16 43590 9530)</div>
<div> (symbols 48 6020 1)</div>
<div> (strings 32 15201 1632)</div>
<div> (string-bytes 1 502900)</div>
<div> (vectors 16 6718)</div>
<div> (vector-slots 8 78458 6176)</div>
<div> (floats 8 18 317)</div>
<div> (intervals 56 187 0)</div>
<div> (buffers 1000 12))</div>
<br>
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--_000_PH0PR11MB4887DBC51723BB8DE454EB719DF10PH0PR11MB4887namp_--
Ed Avis <ed.avis@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#45042; Package emacs.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.