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From: Robert Pluim <rpluim@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in
Emacsen built without X under GNU Screen
In-Reply-To: <83lejr8vq0.fsf@HIDDEN> (Eli Zaretskii's message of "Mon, 20 Mar
2023 14:15:35 +0200")
References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN>
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<871qlms7h3.fsf@HIDDEN> <83r0tmbb11.fsf@HIDDEN>
<87sfe2qo5u.fsf@HIDDEN> <83lejub31r.fsf@HIDDEN>
<87o7onrf8o.fsf@HIDDEN> <83lejr8vq0.fsf@HIDDEN>
Date: Mon, 20 Mar 2023 15:08:14 +0100
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>>>>> On Mon, 20 Mar 2023 14:15:35 +0200, Eli Zaretskii <eliz@HIDDEN> said:
>> From: Robert Pluim <rpluim@HIDDEN>
>> Changing the interpretation of the user=CA=BCs TERM seems pretty rad=
ical to
>> me, even if it will tend to improve users=CA=BC experience.
Eli> If screen.FOO is not recognizable while FOO is, then we cannot
Eli> possibly break anything by this change, however radical. (But it
Eli> sounds like I misunderstood what is going on here, see below.)
I=CA=BCm sure I don=CA=BCt entirely understand what=CA=BCs going on either
>> >> I guess we could do something with not checking COLORTERM under s=
creen
>> >> instead.
>>=20
Eli> That's a separate issue, from where I stand. Users can unset
Eli> COLORTERM, but their true terminal type will still be "hidden" beh=
ind
Eli> the "screen." prefix, won't it? The terminal type is about more t=
han
Eli> just the colors. Or does terminfo know about this "screen." busin=
ess?
>>=20
>> I have both a 'screen.xterm-256color' and a 'xterm-256color' terminfo
>> file. I don=CA=BCt think terminfo does any prefix stripping, as ther=
e=CA=BCs a
>> whole bunch of screen.$TERM files, which would be unnecessary if
>> stripping were happening.
Eli> Are the screen.$TERM files different from the corresponding $TERM
Eli> ones? If so, what are the differences?
$ infocmp screen.xterm-256color xterm-256color
comparing screen.xterm-256color to xterm-256color.
comparing booleans.
bce: F:T.
bw: T:F.
ccc: F:T.
comparing numbers.
comparing strings.
initc: NULL, '\E]4;%p1%d;rgb\:%p2%{255}%*%{1000}%/%2.2X/%p3%{255}%*%{1000}=
%/%2.2X/%p4%{255}%*%{1000}%/%2.2X\E\\'.
invis: NULL, '\E[8m'.
kIC: NULL, '\E[2;2~'.
kNXT: NULL, '\E[6;2~'.
kPRV: NULL, '\E[5;2~'.
kend: '\E[4~', '\EOF'.
khome: '\E[1~', '\EOH'.
kmous: '\E[M', '\E[<'.
oc: NULL, '\E]104\007'.
ritm: NULL, '\E[23m'.
rs1: '\Ec', '\Ec\E]104\007'.
sgr: '%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t=
;5%;%?%p5%t;2%;m', '%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p5%t;2%;%?%p2%t;4%=
;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m'.
sitm: NULL, '\E[3m'.
Eli> And if screen.$TERM files are available in the terminfo DB, then w=
hy
Eli> did you suggest to do something in init_tty in the first place?
Becasue the behaviour is different (all under 'screen' in gnome-terminal):
1.
COLORTERM=3Dtruecolor TERM=3Dscreen.xterm-256color src/emacs -nw -Q etc/NEWS
(display-color-cells) =3D> 16777216
but the display looks black & white, and `list-colors-display' looks
really off.
2.
COLORTERM=3Dtruecolor TERM=3Dxterm-256color src/emacs -nw -Q etc/NEWS
(display-color-cells) =3D> 16777216
The display looks more colourful, but `list-colors-display' is still
off.
3.
COLORTERM=3D TERM=3Dscreen.xterm-256color src/emacs -nw -Q etc/NEWS
(display-color-cells) =3D> 256
The display is now colourful, and `list-colors-display' has 256
entries, but:
4.
COLORTERM=3D TERM=3Dxterm-256color src/emacs -nw -Q etc/NEWS
This is like [3], but the colours are different.
[2] is a definite improvement over [1], but it would be nice if we
could get to [3] or [4] (my gnome-terminal may be too old for proper
truecolor support, it=CA=BCs 3.83.3 with VTE 0.62.3)
Eli> Also, what about the lisp/term/ files -- are we loading the right
Eli> files when TERM -s set to screen.SOMETHING? should we?
We=CA=BCre running term/screen.el (which then runs xterm.el)
=20
>> Perhaps the best thing to do is put an entry in etc/PROBLEMS?
Eli> About what? If screen.FOO files are available, then everything sh=
ould
Eli> already work correctly OOTB, no? Or what am I missing here?
If everything worked OOTB, then yes, but our handling of COLORTERM is
still problematic. If we could delay the 24bit colour support decision
until we=CA=BCre in lisp/term I think that would help.
Robert
--=20
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 20 Mar 2023 12:17:03 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 20 08:17:03 2023 Received: from localhost ([127.0.0.1]:53873 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1peERi-0006iL-NN for submit <at> debbugs.gnu.org; Mon, 20 Mar 2023 08:17:02 -0400 Received: from eggs.gnu.org ([209.51.188.92]:53880) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1peERh-0006ho-6T for 62237 <at> debbugs.gnu.org; Mon, 20 Mar 2023 08:17:01 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1peERb-0007Np-VR; Mon, 20 Mar 2023 08:16:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=0zMlI5Iqb7Vrae64UdXg9Ag5GoOOciZwny9G4X1Dgm0=; b=gEsRLnzP/u8pA3x2yUfh G3hRwLNfo240XYri/dYt5xmxapGeb9yDr6v7dxfBe5e3RDMQEKAHDrTdZIh9jOJfAoDG8p+2YgmTX Guh+EUIZtLhgjejya6wX6UxHiN0doJDAf95fVFzBa5yyg0k6GRc2B75lTDJ4UOY7fLDONMP4rC5i+ uHLYSM59W3Sn51PH94E3bi0/iBsJB5C0Q5/4U3mTlAK8kGvxSd6wC3u0DB/A1NPtFTd+mg/VSg8CT w5neCOZuXwUHrYmOQCYKVGhpS2cPCeFa8t2Aqt9jUYO3MxghdxofiYTp/RxhNIZ/s5BpxWZfemfL2 Dge3wJBSsJABBQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1peERb-00063l-FO; Mon, 20 Mar 2023 08:16:55 -0400 Date: Mon, 20 Mar 2023 14:17:03 +0200 Message-Id: <83jzzb8vnk.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Sebastian Tennant <sdt@HIDDEN> In-Reply-To: <87v8iv94vq.fsf@HIDDEN> (message from Sebastian Tennant on Mon, 20 Mar 2023 08:57:45 +0000) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN> <87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN> <871qlms7h3.fsf@HIDDEN> <83r0tmbb11.fsf@HIDDEN> <87sfe2qo5u.fsf@HIDDEN> <83lejub31r.fsf@HIDDEN> <87o7onrf8o.fsf@HIDDEN> <87v8iv94vq.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: rpluim@HIDDEN, 62237 <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: Sebastian Tennant <sdt@HIDDEN> > Cc: Eli Zaretskii <eliz@HIDDEN>, 62237 <at> debbugs.gnu.org > Date: Mon, 20 Mar 2023 08:57:45 +0000 > > > I have both a 'screen.xterm-256color' and a 'xterm-256color' > > terminfo file. I donʼt think terminfo does any prefix stripping, as > > thereʼs a whole bunch of screen.$TERM files, which would be > > unnecessary if stripping were happening. > > FWIW, I agree that stripping the 'screen.' prefix isn’t the correct > thing to do. (Let's not forget that the issue seems to have bitten > only one person in well over a year). Why did this bite you? Don't you have those screen.FOO files? If not, why not?
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 20 Mar 2023 12:15:35 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 20 08:15:35 2023 Received: from localhost ([127.0.0.1]:53868 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1peEQJ-0006fl-68 for submit <at> debbugs.gnu.org; Mon, 20 Mar 2023 08:15:35 -0400 Received: from eggs.gnu.org ([209.51.188.92]:34502) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1peEQH-0006fW-Id for 62237 <at> debbugs.gnu.org; Mon, 20 Mar 2023 08:15:34 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1peEQB-0006zN-SH; Mon, 20 Mar 2023 08:15:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=5uiV8G4paFPydwnq3FK2YcqyanSkaJtq9RA0koJJ0v8=; b=UcFQoxX2Fih4LC8htIE5 jBInffiP0/du7Z3dozcf1Z1OaIcDYpzUjg10zr5hgPo/rFUEp9n/iFKV9K34aD7FJDLjLCNTOmuY/ iQtskojvbzU3MAby4lnEAudk12KHG2BjVCO8UphnK0LJHZBxTfGvOch1EOrjSOES5t8FQOIs3iCWM Co2x/4ZDaYWPJ7dMK2RH9y59oU0VQghXJkAXNTpxS8NYPSfyCd5Cx8o3vo7iU/Gfbx4PF64ngNvm0 6nK9gyRil9/Y1mLfP+CNIt9ztUfzfyF92RTtWjmqBlVZUuHXF5f5tzyJafxJWjLyvValxSj4DpXHi Meon0AFl3dfKgA==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1peEQA-0005uZ-Vc; Mon, 20 Mar 2023 08:15:27 -0400 Date: Mon, 20 Mar 2023 14:15:35 +0200 Message-Id: <83lejr8vq0.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Robert Pluim <rpluim@HIDDEN> In-Reply-To: <87o7onrf8o.fsf@HIDDEN> (message from Robert Pluim on Mon, 20 Mar 2023 09:36:39 +0100) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN> <87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN> <871qlms7h3.fsf@HIDDEN> <83r0tmbb11.fsf@HIDDEN> <87sfe2qo5u.fsf@HIDDEN> <83lejub31r.fsf@HIDDEN> <87o7onrf8o.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: sdt@HIDDEN, 62237 <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: Robert Pluim <rpluim@HIDDEN> > Cc: sdt@HIDDEN, 62237 <at> debbugs.gnu.org > Date: Mon, 20 Mar 2023 09:36:39 +0100 > > >>>>> On Sat, 18 Mar 2023 15:29:52 +0200, Eli Zaretskii <eliz@HIDDEN> said: > > >> From: Robert Pluim <rpluim@HIDDEN> > >> Cc: sdt@HIDDEN, 62237 <at> debbugs.gnu.org > >> Date: Sat, 18 Mar 2023 12:44:45 +0100 > >> > >> >>>>> On Sat, 18 Mar 2023 12:37:30 +0200, Eli Zaretskii <eliz@HIDDEN> said: > >> > Eli> Then I guess we should install your proposed fix in init_tty. > >> > >> In emacs-29? That seems a bit radical. Patch below in any case > > Eli> Yes, I think in emacs-29. Why "radical"? > > Changing the interpretation of the userʼs TERM seems pretty radical to > me, even if it will tend to improve usersʼ experience. If screen.FOO is not recognizable while FOO is, then we cannot possibly break anything by this change, however radical. (But it sounds like I misunderstood what is going on here, see below.) > >> I guess we could do something with not checking COLORTERM under screen > >> instead. > > Eli> That's a separate issue, from where I stand. Users can unset > Eli> COLORTERM, but their true terminal type will still be "hidden" behind > Eli> the "screen." prefix, won't it? The terminal type is about more than > Eli> just the colors. Or does terminfo know about this "screen." business? > > I have both a 'screen.xterm-256color' and a 'xterm-256color' terminfo > file. I donʼt think terminfo does any prefix stripping, as thereʼs a > whole bunch of screen.$TERM files, which would be unnecessary if > stripping were happening. Are the screen.$TERM files different from the corresponding $TERM ones? If so, what are the differences? And if screen.$TERM files are available in the terminfo DB, then why did you suggest to do something in init_tty in the first place? Also, what about the lisp/term/ files -- are we loading the right files when TERM -s set to screen.SOMETHING? should we? > Perhaps the best thing to do is put an entry in etc/PROBLEMS? About what? If screen.FOO files are available, then everything should already work correctly OOTB, no? Or what am I missing here?
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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Mon, 20 Mar 2023 04:57:48 -0400 (EDT) Received: from sebyte by balor with local (Exim 4.94.2) (envelope-from <sebyte@HIDDEN>) id 1peBKs-002LP0-0M; Mon, 20 Mar 2023 08:57:46 +0000 From: Sebastian Tennant <sdt@HIDDEN> To: Robert Pluim <rpluim@HIDDEN> Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen In-Reply-To: <87o7onrf8o.fsf@HIDDEN> (Robert Pluim's message of "Mon, 20 Mar 2023 09:36:39 +0100") References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN> <87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN> <871qlms7h3.fsf@HIDDEN> <83r0tmbb11.fsf@HIDDEN> <87sfe2qo5u.fsf@HIDDEN> <83lejub31r.fsf@HIDDEN> <87o7onrf8o.fsf@HIDDEN> Date: Mon, 20 Mar 2023 08:57:45 +0000 Message-ID: <87v8iv94vq.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.5 (/) X-Debbugs-Envelope-To: 62237 Cc: Eli Zaretskii <eliz@HIDDEN>, 62237 <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: -1.5 (-) Quoth Robert Pluim <rpluim@HIDDEN> on Mon, 20 Mar 2023 09:36:39 +0100: >> [=E2=80=A6] >> Yes, I think in emacs-29. Why "radical"? > > Changing the interpretation of the user=CA=BCs TERM seems pretty radical > to me, even if it will tend to improve users=CA=BC experience. > >>> I guess we could do something with not checking COLORTERM under screen >>> instead. > >> That's a separate issue, from where I stand. Users can unset >> COLORTERM, but their true terminal type will still be "hidden" >> behind the "screen." prefix, won't it? The terminal type is about >> more than just the colors. Or does terminfo know about this >> "screen." business? > > I have both a 'screen.xterm-256color' and a 'xterm-256color' > terminfo file. I don=CA=BCt think terminfo does any prefix stripping, as > there=CA=BCs a whole bunch of screen.$TERM files, which would be > unnecessary if stripping were happening. FWIW, I agree that stripping the 'screen.' prefix isn=E2=80=99t the correct thing to do. (Let's not forget that the issue seems to have bitten only one person in well over a year). > Perhaps the best thing to do is put an entry in etc/PROBLEMS? How about something like this: Emacs >=3D 28.1 respects the value of environment variable COLORTERM and if it is set to 'truecolor', expects the terminal to support 24-bit true colour. GNOME Terminal supports true colour and, unnecessarily, sets COLORTERM=3Dtruecolor to make this clear. GNU Screen 4.X does =CC=B2n=CC=B2o=CC=B2t support true colour. If you sta= rt Emacs at Screen start time (via an entry in your .screenrc), Emacs will inherit the environment and, because of COLORTERM=3Dtruecolor, assume the terminal, i.e. the screen, supports true colour. This will result in broken colours in Emacs. The simplest solution is to unset COLORTERM in the environment before launching screen. Or words to that effect.
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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From: Robert Pluim <rpluim@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in
Emacsen built without X under GNU Screen
In-Reply-To: <83lejub31r.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 18 Mar
2023 15:29:52 +0200")
References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN>
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>>>>> On Sat, 18 Mar 2023 15:29:52 +0200, Eli Zaretskii <eliz@HIDDEN> said:
>> From: Robert Pluim <rpluim@HIDDEN>
>> Cc: sdt@HIDDEN, 62237 <at> debbugs.gnu.org
>> Date: Sat, 18 Mar 2023 12:44:45 +0100
>>=20
>> >>>>> On Sat, 18 Mar 2023 12:37:30 +0200, Eli Zaretskii <eliz@HIDDEN=
g> said:
>>=20
Eli> Then I guess we should install your proposed fix in init_tty.
>>=20
>> In emacs-29? That seems a bit radical. Patch below in any case
Eli> Yes, I think in emacs-29. Why "radical"?
Changing the interpretation of the user=CA=BCs TERM seems pretty radical to
me, even if it will tend to improve users=CA=BC experience.
>> I guess we could do something with not checking COLORTERM under scre=
en
>> instead.
Eli> That's a separate issue, from where I stand. Users can unset
Eli> COLORTERM, but their true terminal type will still be "hidden" beh=
ind
Eli> the "screen." prefix, won't it? The terminal type is about more t=
han
Eli> just the colors. Or does terminfo know about this "screen." busin=
ess?
I have both a 'screen.xterm-256color' and a 'xterm-256color' terminfo
file. I don=CA=BCt think terminfo does any prefix stripping, as there=CA=BC=
s a
whole bunch of screen.$TERM files, which would be unnecessary if
stripping were happening.
Perhaps the best thing to do is put an entry in etc/PROBLEMS?
Robert
--=20
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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Sat, 18 Mar 2023 14:35:32 -0400 (EDT) Received: from sebyte by balor with local (Exim 4.94.2) (envelope-from <sebyte@HIDDEN>) id 1pdbOt-0021A7-DC; Sat, 18 Mar 2023 18:35:31 +0000 From: Sebastian Tennant <sdt@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen In-Reply-To: <83ileyay8m.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 18 Mar 2023 17:13:45 +0200") References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN> <87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN> <87leju4acd.fsf@HIDDEN> <87wn3eqog7.fsf@HIDDEN> <87edpm3xy6.fsf@HIDDEN> <83ileyay8m.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.3 (gnu/linux) Date: Sat, 18 Mar 2023 18:35:31 +0000 Message-ID: <87zg893o24.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.4 (/) X-Debbugs-Envelope-To: 62237 Cc: 62237 <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: -1.4 (-) Quoth Eli Zaretskii <eliz@HIDDEN> on Sat, 18 Mar 2023 17:13:45 +0200: > [=E2=80=A6] Or does GNOME itself support true color? GNOME Terminal/VTE does support true color, but why continue to employ "a long-obsolete slang-only variable used to work around broken termcap/terminfo entries"? Another wrinkle in all this is the fact that I start Emacs at screen start time (rather than a shell) via an entry in my .screenrc. This means the environment is effectively exported and explains why the value of COLORTERM is picked up by Emacs. If I allowed screen to fire up a shell and then started Emacs from that shell, this problem would never have reared its ugly head!
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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Sat, 18 Mar 2023 13:56:34 -0400 (EDT) Received: from sebyte by balor with local (Exim 4.94.2) (envelope-from <sebyte@HIDDEN>) id 1pdanB-0020zx-05; Sat, 18 Mar 2023 17:56:33 +0000 From: Sebastian Tennant <sdt@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN> <87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN> <87leju4acd.fsf@HIDDEN> <87wn3eqog7.fsf@HIDDEN> <87edpm3xy6.fsf@HIDDEN> <83ileyay8m.fsf@HIDDEN> Date: Sat, 18 Mar 2023 17:56:32 +0000 In-Reply-To: <83ileyay8m.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 18 Mar 2023 17:13:45 +0200") Message-ID: <875yay3pv3.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.4 (/) X-Debbugs-Envelope-To: 62237 Cc: rpluim@HIDDEN, 62237 <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: -1.4 (-) Quoth Eli Zaretskii <eliz@HIDDEN> on Sat, 18 Mar 2023 17:13:45 +0200: >> From: Sebastian Tennant <sdt@HIDDEN> >> Cc: Eli Zaretskii <eliz@HIDDEN>, 62237 <at> debbugs.gnu.org >> Date: Sat, 18 Mar 2023 15:01:53 +0000 >> >> [=E2=80=A6] >> >> According to: >> >> https://packages.debian.org/search?keywords=3Dscreen >> >> Debian bookworm (the next stable release) will ship screen version >> 4.9.0. I've downloaded the deb and grepped the manpage and the >> string "truecolor" is nowhere to be found so it looks as if screen >> shipped by Debian will lack support for truecolor for some years to >> come. > > According to this: > > https://bbs.archlinux.org/viewtopic.php?id=3D249670 > > true color support in 'screen' will be released in version 5, and the > 4.x branch of 'screen' doesn't support it. This is consistent with > the fact that you built 'screen' from their mast branch, and it > announces itself as version 4.99, i.e. the development version of > v5.x. I guess an entry in etc/PROBLEMS about this is in order. > > What is still a mystery to me is why does GNOME Terminal set > COLORTERM=3Dtruecolor in the environment. Does it assume that 'screen' > will not be used or something? Or does GNOME itself support true > color? Debian bullseye (stable) ships GNOME Terminal version 3.38.3, tagged/released 4th Feb 2021: https://gitlab.gnome.org/GNOME/gnome-terminal/-/commits/3.38.3 Yet, this commit, made 26th April 2014: https://gitlab.gnome.org/GNOME/gnome-terminal/-/commits/1d5c1b6ca6373c1301= 494edbc9e43c3e6a9c9aaf/ reads: screen: Stop setting COLORTERM env var [=E2=80=A6] COLORTERM is a long-obsolete slang-only variable used to work around broken termcap/terminfo entries. Hmm... Turns out GNOME Terminal uses VTE (Virtual TErminal): https://gitlab.gnome.org/GNOME/vte and COLORTERM is set to =E2=80=98truecolor=E2=80=99 in function merge_envir= on, on line 261 of file src/spawn.cc: https://gitlab.gnome.org/GNOME/vte/-/blob/master/src/spawn.cc As to why, I've written to Christian Persch and I shall update this bug report as soon as I receive a response. --=20 Dorothy Annan Trevor Tennant database - DATTdb http://dattdb.info
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 18 Mar 2023 15:13:50 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 18 11:13:50 2023 Received: from localhost ([127.0.0.1]:48885 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pdYFi-0006mn-4l for submit <at> debbugs.gnu.org; Sat, 18 Mar 2023 11:13:50 -0400 Received: from eggs.gnu.org ([209.51.188.92]:45670) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1pdYFf-0006mX-TS for 62237 <at> debbugs.gnu.org; Sat, 18 Mar 2023 11:13:48 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdYFa-0005Ua-6M; Sat, 18 Mar 2023 11:13:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=dG1C51braIYyZUVe0S4x96j2imLASd+CmBdaSj5tMC0=; b=XMVEA3+QvJj4ww/xpUaD aIUoCUVvtDIPgYbRlB1stMMZrK2MDbqO2o1ts6+UvrSMVUMFQxppENqgYr4qHLq+YF170hQCtzDmi FMAbqnSvHwfvHzYblVvGudO9k55RpjW+HC491TpF5PI3Qb5A0fTO0B7xpRsoN+BfNtKwBSSxnVYVW blFJESwdxvfMXkGsojtMH75sFJA05Dr7wgjxOxAleujEO3apKJqj0SGZBJt6+vuQRITXCl4x1RIpK nEesamt14gvEouhwXij1DVMy5dfiPR7HORlnBq/p5sl6kUmkXBxYHC1iS4hZaahj87n+ekr8ca2ee whdxGtnKwm7d1g==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdYFZ-0006MP-LF; Sat, 18 Mar 2023 11:13:41 -0400 Date: Sat, 18 Mar 2023 17:13:45 +0200 Message-Id: <83ileyay8m.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Sebastian Tennant <sdt@HIDDEN> In-Reply-To: <87edpm3xy6.fsf@HIDDEN> (message from Sebastian Tennant on Sat, 18 Mar 2023 15:01:53 +0000) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN> <87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN> <87leju4acd.fsf@HIDDEN> <87wn3eqog7.fsf@HIDDEN> <87edpm3xy6.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: rpluim@HIDDEN, 62237 <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: Sebastian Tennant <sdt@HIDDEN> > Cc: Eli Zaretskii <eliz@HIDDEN>, 62237 <at> debbugs.gnu.org > Date: Sat, 18 Mar 2023 15:01:53 +0000 > > I've now built and installed screen ‘master’ (4.99) and the problem is > resolved, i.e. provided my .screenrc includes the line ‘truecolor on’, > colours work fine with COLORTERM set to ‘truecolor’, or not set at > all. > > Sorry about all this. Many months ago, I built screen from master and > ran it to see if it made a difference. I concluded then that it > didn't and I think this must have been because I didn't actually > install the version I built. This meant that the relevant entries > under /usr/lib/terminfo/s were not written/updated. > > In any case, we've established one thing for certain, the version of > screen shipped by Debian bullseye (stable) does not support truecolor. > Most strange is the fact that, according to dpkg, the version shipped > is 4.8.0: > > $ dpkg -l | grep screen > ii screen 4.8.0-6 amd64 terminal multiplexer with VT100/ANSI… > ^^^^^ > > but screen itself reports: > > $ screen --version > Screen version 4.08.00 (GNU) 05-Feb-20 > ^^^^ > > which makes no sense at all! > > According to: > > https://packages.debian.org/search?keywords=screen > > Debian bookworm (the next stable release) will ship screen version > 4.9.0. I've downloaded the deb and grepped the manpage and the string > "truecolor" is nowhere to be found so it looks as if screen shipped by > Debian will lack support for truecolor for some years to come. According to this: https://bbs.archlinux.org/viewtopic.php?id=249670 true color support in 'screen' will be released in version 5, and the 4.x branch of 'screen' doesn't support it. This is consistent with the fact that you built 'screen' from their mast branch, and it announces itself as version 4.99, i.e. the development version of v5.x. I guess an entry in etc/PROBLEMS about this is in order. What is still a mystery to me is why does GNOME Terminal set COLORTERM=truecolor in the environment. Does it assume that 'screen' will not be used or something? Or does GNOME itself support true color?
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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From: Sebastian Tennant <sdt@HIDDEN>
To: Robert Pluim <rpluim@HIDDEN>
Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in
Emacsen built without X under GNU Screen
References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN>
<87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN>
<87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN>
<87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN>
<87leju4acd.fsf@HIDDEN> <87wn3eqog7.fsf@HIDDEN>
Date: Sat, 18 Mar 2023 15:01:53 +0000
In-Reply-To: <87wn3eqog7.fsf@HIDDEN> (Robert Pluim's message of "Sat, 18
Mar 2023 12:38:32 +0100")
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Quoth Robert Pluim <rpluim@HIDDEN>
on Sat, 18 Mar 2023 12:38:32 +0100:
>> [=E2=80=A6] If you discard the =E2=80=98screen.=E2=80=99 prefix by expl=
icitly setting TERM
>> in your .screenrc; for example:
>>
>> term xterm-256color
>>
>> it makes no difference, i.e. colours are still broken (when
>> COLORTERM is set to =E2=80=98truecolour=E2=80=99).
>
> Hmm, I get 24-bit colour in that case. Presumably because screen +
> gnome-terminal supports it.
It seems my version of screen was too old and truecolor is not
supported.
I've now built and installed screen =E2=80=98master=E2=80=99 (4.99) and the=
problem is
resolved, i.e. provided my .screenrc includes the line =E2=80=98truecolor o=
n=E2=80=99,
colours work fine with COLORTERM set to =E2=80=98truecolor=E2=80=99, or not=
set at
all.
Sorry about all this. Many months ago, I built screen from master and
ran it to see if it made a difference. I concluded then that it
didn't and I think this must have been because I didn't actually
install the version I built. This meant that the relevant entries
under /usr/lib/terminfo/s were not written/updated.
In any case, we've established one thing for certain, the version of
screen shipped by Debian bullseye (stable) does not support truecolor.
Most strange is the fact that, according to dpkg, the version shipped
is 4.8.0:
$ dpkg -l | grep screen
ii screen 4.8.0-6 amd64 terminal multiplexer with VT100/ANSI=E2=80=A6
^^^^^
but screen itself reports:
$ screen --version
Screen version 4.08.00 (GNU) 05-Feb-20
^^^^
which makes no sense at all!
According to:
https://packages.debian.org/search?keywords=3Dscreen
Debian bookworm (the next stable release) will ship screen version
4.9.0. I've downloaded the deb and grepped the manpage and the string
"truecolor" is nowhere to be found so it looks as if screen shipped by
Debian will lack support for truecolor for some years to come.
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 18 Mar 2023 13:29:59 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 18 09:29:59 2023 Received: from localhost ([127.0.0.1]:46651 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pdWdC-0003PQ-S7 for submit <at> debbugs.gnu.org; Sat, 18 Mar 2023 09:29:59 -0400 Received: from eggs.gnu.org ([209.51.188.92]:54784) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1pdWdA-0003PB-Vq for 62237 <at> debbugs.gnu.org; Sat, 18 Mar 2023 09:29:57 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdWd5-0002Sb-Ev; Sat, 18 Mar 2023 09:29:51 -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=kNo+GxdWsAcYCYu5c73gUlGp3KNG9YVI4HB4X0PpL1I=; b=mA4kzUnSw3uc SrWC3+Ts+kslwVod79tGLFXUE+tzpzaDTVopxOeCBFXI7lIKW49NENxt7sKJ4YIF5klG3skzfijLT v1zluwL0OBgk0Ltdv3B+BRHZaok+4zHOQsacraf/ZsdnP13WF8CSs++2LODHVznZOoV7PkgWcNkK4 FjZ5Jvo0Dpm+mPZIjFJpu/oJbdL060nlD4Dhmn72WI/5Z8ZkUUEhWGbQLu+srPub1MTSwHsV/23GG +pf+AtREdE7gAavSqTOdLu/SybLmb7Xr/MnUHXKsvLvf7FZOOXvbUNE3WFbiFqqKnuT+lYwQP+Ifv vya0YoF5Tc7zOVTdcdGdMQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdWd4-0000GQ-Qb; Sat, 18 Mar 2023 09:29:51 -0400 Date: Sat, 18 Mar 2023 15:29:52 +0200 Message-Id: <83lejub31r.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Robert Pluim <rpluim@HIDDEN> In-Reply-To: <87sfe2qo5u.fsf@HIDDEN> (message from Robert Pluim on Sat, 18 Mar 2023 12:44:45 +0100) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN> <87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN> <871qlms7h3.fsf@HIDDEN> <83r0tmbb11.fsf@HIDDEN> <87sfe2qo5u.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: sdt@HIDDEN, 62237 <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: Robert Pluim <rpluim@HIDDEN> > Cc: sdt@HIDDEN, 62237 <at> debbugs.gnu.org > Date: Sat, 18 Mar 2023 12:44:45 +0100 > > >>>>> On Sat, 18 Mar 2023 12:37:30 +0200, Eli Zaretskii <eliz@HIDDEN> said: > > Eli> Then I guess we should install your proposed fix in init_tty. > > In emacs-29? That seems a bit radical. Patch below in any case Yes, I think in emacs-29. Why "radical"? > I guess we could do something with not checking COLORTERM under screen > instead. That's a separate issue, from where I stand. Users can unset COLORTERM, but their true terminal type will still be "hidden" behind the "screen." prefix, won't it? The terminal type is about more than just the colors. Or does terminfo know about this "screen." business?
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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From: Robert Pluim <rpluim@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in
Emacsen built without X under GNU Screen
In-Reply-To: <83r0tmbb11.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 18 Mar
2023 12:37:30 +0200")
References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN>
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Date: Sat, 18 Mar 2023 12:44:45 +0100
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>>>>> On Sat, 18 Mar 2023 12:37:30 +0200, Eli Zaretskii <eliz@HIDDEN> said:
Eli> Then I guess we should install your proposed fix in init_tty.
In emacs-29? That seems a bit radical. Patch below in any case
I guess we could do something with not checking COLORTERM under screen
instead.
Robert
--
diff --git i/src/dispnew.c w/src/dispnew.c
index 87ec83acdf3..f165c604ae9 100644
--- i/src/dispnew.c
+++ w/src/dispnew.c
@@ -6586,6 +6586,21 @@ init_display_interactive (void)
exit (1);
}
+ if (!NILP (Vterm_strip_prefixes))
+ {
+ Lisp_Object prefixes = Vterm_strip_prefixes;
+ FOR_EACH_TAIL (prefixes)
+ {
+ char *c_prefix = SSDATA (XCAR (prefixes));
+ int len = strlen (c_prefix);
+ if (strncmp (terminal_type, c_prefix, len) == 0)
+ {
+ terminal_type += len;
+ break;
+ }
+ }
+ }
+
{
struct terminal *t;
struct frame *f = XFRAME (selected_frame);
@@ -6817,6 +6832,11 @@ syms_of_display (void)
Possible values are t (below the tool bar), nil (above the tool bar).
This option affects only builds where the tool bar is not external. */);
+ DEFVAR_LISP ("term-strip-prefixes", Vterm_strip_prefixes,
+ doc: /* List of prefixes to try to strip from the TERM environment variable.
+This will strip the first matching prefix only. */);
+ Vterm_strip_prefixes = Fcons (build_string ("screen."), Qnil);
+
pdumper_do_now_and_after_load (syms_of_display_for_pdumper);
}
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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From: Robert Pluim <rpluim@HIDDEN>
To: Sebastian Tennant <sdt@HIDDEN>
Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in
Emacsen built without X under GNU Screen
In-Reply-To: <87leju4acd.fsf@HIDDEN> (Sebastian Tennant's message of "Sat,
18 Mar 2023 10:34:10 +0000")
References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN>
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>>>>> On Sat, 18 Mar 2023 10:34:10 +0000, Sebastian Tennant <sdt@HIDDEN>=
said:
Sebastian> Quoth Eli Zaretskii <eliz@HIDDEN>
Sebastian> on Sat, 18 Mar 2023 11:09:10 +0200:
>>>>> [=E2=80=A6] machines you are able to do a rlogin and still keep t=
he
>>>>> correct termcap/terminfo entry. The terminal name is put in the
>>>>> $TERM variable of all new windows. Screen also sets the $TERMCAP
>>>>> variable reflecting the capabilities of the virtual terminal
>>>>> emulated. Notice that, however, on machines using the terminfo
>>>>> database this variable has no effect. Furthermore, the variable
>>>>> $WINDOW is set to the window number of each window.
>>>>>=20
>>>> This seems to tell how 'screen' figures out the terminal name, not
>>>> how it sets TERM. I asked who and why sets TERM to
>>>> screen.SOMETHING.
>>>>=20
>>> screen does: "The terminal name is put in the $TERM variable of all
>>> new windows."
>>>=20
>> So how did Emacs ever succeed to work inside screen, then? AFAIK,
>> we never supported this form of TERM's value.
Sebastian> If you discard the =E2=80=98screen.=E2=80=99 prefix by expli=
citly setting TERM in your
Sebastian> .screenrc; for example:
Sebastian> term xterm-256color
Sebastian> it makes no difference, i.e. colours are still broken (when =
COLORTERM
Sebastian> is set to =E2=80=98truecolour=E2=80=99).
Hmm, I get 24-bit colour in that case. Presumably because screen +
gnome-terminal supports it.
Robert
--=20
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 18 Mar 2023 10:37:37 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 18 06:37:37 2023 Received: from localhost ([127.0.0.1]:46351 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pdTwP-0002YW-1r for submit <at> debbugs.gnu.org; Sat, 18 Mar 2023 06:37:37 -0400 Received: from eggs.gnu.org ([209.51.188.92]:34876) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1pdTwM-0002YG-M6 for 62237 <at> debbugs.gnu.org; Sat, 18 Mar 2023 06:37:35 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdTwH-0002tn-5U; Sat, 18 Mar 2023 06:37:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=9p2u/So88k7i7t3+VAv97GE2/0pUaWaGAIJJsiEqELE=; b=MV2VEcZ/CsVZXDI6cS2d BPPJzdN6WX8hMmm+bjy1h+QZmyI5Xmww7qsC+WDzbvwix6cc/PgwD87xPqu8nks7MQAzxsWgbnEU+ Kan3GdRDz6TMX86dE/RC2YuPnJRZR1j0HQIbOxueaIynd0GGY/clA+1nnL7M9HEDsyLdhBeF6sPpl f+UqtrxPt0IxN7mt2YgLlZFmSlB9TjFlX+KSVSZ/A/UoqF85xwMhYb74vqVFHq0szuVnLCWFKar3v OXDmMSkZTcy0bnlK5ts5SRmEYVpTRRClGnP7E5J2IFNzs3SD8ygqhJGbAdBj8S8bWEU6aSPJxsNok UZiuFeGNHd82yA==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdTwG-0004ka-KW; Sat, 18 Mar 2023 06:37:28 -0400 Date: Sat, 18 Mar 2023 12:37:30 +0200 Message-Id: <83r0tmbb11.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Robert Pluim <rpluim@HIDDEN> In-Reply-To: <871qlms7h3.fsf@HIDDEN> (message from Robert Pluim on Sat, 18 Mar 2023 11:02:16 +0100) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN> <87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN> <871qlms7h3.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: sdt@HIDDEN, 62237 <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: Robert Pluim <rpluim@HIDDEN> > Cc: sdt@HIDDEN, 62237 <at> debbugs.gnu.org > Date: Sat, 18 Mar 2023 11:02:16 +0100 > > >>>>> On Sat, 18 Mar 2023 11:09:10 +0200, Eli Zaretskii <eliz@HIDDEN> said: > > >> From: Robert Pluim <rpluim@HIDDEN> > >> Cc: sdt@HIDDEN, 62237 <at> debbugs.gnu.org > >> Date: Sat, 18 Mar 2023 10:05:49 +0100 > >> > >> >>>>> On Fri, 17 Mar 2023 20:55:23 +0200, Eli Zaretskii <eliz@HIDDEN> said: > >> >> machines you are able to do a rlogin and still keep the correct term‐ > --> cap/terminfo entry. The terminal name is put in the $TERM variable of > >> >> all new windows. Screen also sets the $TERMCAP variable reflecting the > >> >> capabilities of the virtual terminal emulated. Notice that, however, on > >> >> machines using the terminfo database this variable has no effect. Fur‐ > >> >> thermore, the variable $WINDOW is set to the window number of each win‐ > >> >> dow. > >> > Eli> This seems to tell how 'screen' figures out the terminal name, not how > Eli> it sets TERM. I asked who and why sets TERM to screen.SOMETHING. > >> > >> screen does: "The terminal name is put in the $TERM variable of all new windows." > > Eli> So how did Emacs ever succeed to work inside screen, then? AFAIK, we > Eli> never supported this form of TERM's value. Is this something > Eli> relatively new? > > I donʼt know, Iʼm a tmuxian ;-) > > Note that emacs works fine, itʼs just the colours that are off, and > people sshʼing in to use screen would tend to set TERM themselves > anyway. Then I guess we should install your proposed fix in init_tty.
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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Sat, 18 Mar 2023 06:34:11 -0400 (EDT) Received: from sebyte by balor with local (Exim 4.94.2) (envelope-from <sebyte@HIDDEN>) id 1pdTt4-001zh6-BT; Sat, 18 Mar 2023 10:34:10 +0000 From: Sebastian Tennant <sdt@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN> <87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN> Date: Sat, 18 Mar 2023 10:34:10 +0000 In-Reply-To: <83v8iybf49.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 18 Mar 2023 11:09:10 +0200") Message-ID: <87leju4acd.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.4 (/) X-Debbugs-Envelope-To: 62237 Cc: Robert Pluim <rpluim@HIDDEN>, 62237 <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: -1.4 (-) Quoth Eli Zaretskii <eliz@HIDDEN> on Sat, 18 Mar 2023 11:09:10 +0200: >>>> [=E2=80=A6] machines you are able to do a rlogin and still keep the >>>> correct termcap/terminfo entry. The terminal name is put in the >>>> $TERM variable of all new windows. Screen also sets the $TERMCAP >>>> variable reflecting the capabilities of the virtual terminal >>>> emulated. Notice that, however, on machines using the terminfo >>>> database this variable has no effect. Furthermore, the variable >>>> $WINDOW is set to the window number of each window. >>>> >>> This seems to tell how 'screen' figures out the terminal name, not >>> how it sets TERM. I asked who and why sets TERM to >>> screen.SOMETHING. >>> >> screen does: "The terminal name is put in the $TERM variable of all >> new windows." >> > So how did Emacs ever succeed to work inside screen, then? AFAIK, > we never supported this form of TERM's value. If you discard the =E2=80=98screen.=E2=80=99 prefix by explicitly setting T= ERM in your .screenrc; for example: term xterm-256color it makes no difference, i.e. colours are still broken (when COLORTERM is set to =E2=80=98truecolour=E2=80=99). > Is this something relatively new? I started using screen in 2011 and I'm pretty sure it was prepending =E2=80=98.screen=E2=80=99 then. I'm not convinced this is the issue. Remember, the colours were fine under screen in Emacs 27.2. There's something in the truecolor support added in Emacs 28.1, specifically the respect paid to the vaule of COLORTERM, that doesn't agree with screen. It seems truecolor support was added to screen in July 2015: https://git.savannah.gnu.org/cgit/screen.git/log/?qt=3Dgrep&q=3Dtruecolor Debian bullseye ships screen 4.8.0 which, according to: https://git.savannah.gnu.org/cgit/screen.git/ was released in 2000 which would suggest my screen does supprt truecolor. Oddly, my screen(1) manpage makes no mention of truecolor support, yet various online manpages, for example: https://www.man7.org/linux/man-pages/man1/screen.1.html document a =E2=80=98truecolor on|off=E2=80=99 configuraion option: truecolor [on|off] Enables truecolor support. Currently autodetection of truecolor support cannot be done reliably, as such it's left to user to enable. Default is off. Known terminals that may support it are: iTerm2, Konsole, st. Xterm includes support for truecolor escapes but converts them back to indexed 256 color space. I've added the line: truecolor on to my .screenrc and it doesn't barf, but it makes no diffference either. I shall investigate further.
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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From: Robert Pluim <rpluim@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in
Emacsen built without X under GNU Screen
In-Reply-To: <83v8iybf49.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 18 Mar
2023 11:09:10 +0200")
References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN>
<87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN>
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<87o7oqsa36.fsf@HIDDEN> <83v8iybf49.fsf@HIDDEN>
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>>>>> On Sat, 18 Mar 2023 11:09:10 +0200, Eli Zaretskii <eliz@HIDDEN> said:
>> From: Robert Pluim <rpluim@HIDDEN>
>> Cc: sdt@HIDDEN, 62237 <at> debbugs.gnu.org
>> Date: Sat, 18 Mar 2023 10:05:49 +0100
>>=20
>> >>>>> On Fri, 17 Mar 2023 20:55:23 +0200, Eli Zaretskii <eliz@HIDDEN=
g> said:
>> >> machines you are able to do a rlogin and still keep the correct =
term=E2=80=90
--> cap/terminfo entry. The terminal name is put in the $TERM variabl=
e of
>> >> all new windows. Screen also sets the $TERMCAP variable reflecti=
ng the
>> >> capabilities of the virtual terminal emulated. Notice that, howev=
er, on
>> >> machines using the terminfo database this variable has no effect.=
Fur=E2=80=90
>> >> thermore, the variable $WINDOW is set to the window number of eac=
h win=E2=80=90
>> >> dow.
>>=20
Eli> This seems to tell how 'screen' figures out the terminal name, not=
how
Eli> it sets TERM. I asked who and why sets TERM to screen.SOMETHING.
>>=20
>> screen does: "The terminal name is put in the $TERM variable of all =
new windows."
Eli> So how did Emacs ever succeed to work inside screen, then? AFAIK,=
we
Eli> never supported this form of TERM's value. Is this something
Eli> relatively new?
I don=CA=BCt know, I=CA=BCm a tmuxian ;-)
Note that emacs works fine, it=CA=BCs just the colours that are off, and
people ssh=CA=BCing in to use screen would tend to set TERM themselves
anyway.
Robert
--=20
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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From: Robert Pluim <rpluim@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in
Emacsen built without X under GNU Screen
In-Reply-To: <83pm97cin8.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 17 Mar
2023 20:55:23 +0200")
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<87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN>
<87sfe3s26k.fsf@HIDDEN> <83pm97cin8.fsf@HIDDEN>
Date: Sat, 18 Mar 2023 10:05:49 +0100
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>>>>> On Fri, 17 Mar 2023 20:55:23 +0200, Eli Zaretskii <eliz@HIDDEN> said:
>> machines you are able to do a rlogin and still keep the correct te=
rm=E2=80=90
--> cap/terminfo entry. The terminal name is put in the $TERM variabl=
e of
>> all new windows. Screen also sets the $TERMCAP variable reflecting =
the
>> capabilities of the virtual terminal emulated. Notice that, however,=
on
>> machines using the terminfo database this variable has no effect. F=
ur=E2=80=90
>> thermore, the variable $WINDOW is set to the window number of each w=
in=E2=80=90
>> dow.
Eli> This seems to tell how 'screen' figures out the terminal name, not=
how
Eli> it sets TERM. I asked who and why sets TERM to screen.SOMETHING.
screen does: "The terminal name is put in the $TERM variable of all new win=
dows."
Robert
--=20
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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Fri, 17 Mar 2023 16:18:48 -0400 (EDT) Received: from sebyte by balor with local (Exim 4.94.2) (envelope-from <sebyte@HIDDEN>) id 1pdGXH-001wmv-7b; Fri, 17 Mar 2023 20:18:47 +0000 From: Sebastian Tennant <sdt@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87y1nv4af0.fsf@HIDDEN> <83zg8bcosc.fsf@HIDDEN> <87ttyj44cp.fsf@HIDDEN> <83lejvciaz.fsf@HIDDEN> <83ilezcg3r.fsf@HIDDEN> Date: Fri, 17 Mar 2023 20:18:47 +0000 In-Reply-To: <83ilezcg3r.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 17 Mar 2023 21:50:16 +0200") Message-ID: <87pm973zdk.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.5 (/) X-Debbugs-Envelope-To: 62237 Cc: 62237 <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: -1.5 (-) Quoth Eli Zaretskii <eliz@HIDDEN> on Fri, 17 Mar 2023 21:02:44 +0200: >>> No, Emacs 30 is good enough. (Your report says Emacs 28.1, which >>> is why I asked.) >> >> It's easy to miss the "or higher". > > The "or higher" is not useful because it says nothing about the > versions you actually tested. It could be Emacs 28.2, for example. > Please always tell all the details without assuming that our crystal > balls are clear enough to see them. Fair enough. Apologies for the lack of clarity. >>> What is TERM set to on that system? >> >> In a plain GNOME Terminal, i.e. outside screen: >> >> xterm-256color > > That's 256 colors, not 64-bit true-color terminal, AFAIU. You may be right. My understanding is very limited in this area. >>> It also says that your terminal actually supports only 88 colors. >> >> How do you infer that? > > By looking at the color names. Ah... OK. >>> So you should unset COLORTERM in your environment >> >> That's precisely the fix I discovered yesterday. > > Then I guess this bug can be closed? I suppose so. It felt like an Emacs bug because I was happily using Emacs 27.2 and when I upgraded to 28.1, the colours were broken all of a sudden, but yes, the fault may be with screen. >> According to: >> >> https://github.com/termstandard/colors >> >> command: >> >> $ printf "\x1b[38;2;255;100;0mTRUECOLOR\x1b[0m\n" >> >> shows your terminal is capable of truecolor if the word TRUECOLOR is >> printed in brown. According to the result of this test, GNOME >> Terminal (3.38.3) _is_ truecolor enabled. > > Which standard of true color does it support? I don't know how to answer this question. >> I can observe the same broken colours in xterm (under the same >> conditions) shipped by Debian bullseye. >> >> I'm sure it has to do with screen and will investigate whther or >> not my version of screen supports truecolor. > > Thanks. Haven't had time to investigate yet, but will do tomorrow. Quoth Eli Zaretskii <eliz@HIDDEN> on Fri, 17 Mar 2023 21:50:16 +0200: >>> What is TERM set to on that system? >> >> In a plain GNOME Terminal, i.e. outside screen: >> >> xterm-256color > > And what is it set to _inside_ screen? I set it to screen.gnome in my .screenrc, but this has no bearing on the issue, i.e. if I comment out the =E2=80=98term screen.gnome=E2=80=99 li= ne in my .screenrc, TERM is set to screen.xterm-256color (as Robert pointed out) and the colors are still broken. Incidentally, I use screen.gnome because it limits the colors to eight (and I prefer the simplicity of just eight colors).
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 17 Mar 2023 19:50:45 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 17 15:50:45 2023 Received: from localhost ([127.0.0.1]:45717 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pdG69-0004ok-3E for submit <at> debbugs.gnu.org; Fri, 17 Mar 2023 15:50:45 -0400 Received: from eggs.gnu.org ([209.51.188.92]:58356) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1pdG68-0004oX-1M for 62237 <at> debbugs.gnu.org; Fri, 17 Mar 2023 15:50:44 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdG62-0006dU-6c; Fri, 17 Mar 2023 15:50:38 -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=3Xhg41jVioivy83q4g/aGIw0ckZ06ZWGX/zhvc/qEuo=; b=VbcZh4C6g90W vQXZVj4Uud7k5MnhupZQNt4fHYP6UcVmhamdfQ6GtLWBrIP/1oQYX8YTmARsFbexhxnclAF1SOuwo gvgLJ/wGiWFJCZ8F4Ij6vsQJ6PFD24axomwfgC7a0aOCkO50KORqonsT05WAswH+ld6e7yhagQArD aVXQV9kq5EmA7/phnv3ZTuGpa6KAZZ/mAoeGHvzx6vCga5eHlP5T5cZIeJoCE/sMisl58nafE/Spj DQK11nPLk7XH/4ct4TkULghD2N4tfdR7Ldg/xiKWSTQE34l2cSE4JjwIR+BlLUMABRFv/sntl5Dd3 zj8xDC/U5VpZXRRagQ7mZg==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdG5f-0006T7-7Y; Fri, 17 Mar 2023 15:50:37 -0400 Date: Fri, 17 Mar 2023 21:50:16 +0200 Message-Id: <83ilezcg3r.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: sdt@HIDDEN In-Reply-To: <83lejvciaz.fsf@HIDDEN> (message from Eli Zaretskii on Fri, 17 Mar 2023 21:02:44 +0200) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87y1nv4af0.fsf@HIDDEN> <83zg8bcosc.fsf@HIDDEN> <87ttyj44cp.fsf@HIDDEN> <83lejvciaz.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: 62237 <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 (---) > Cc: 62237 <at> debbugs.gnu.org > Date: Fri, 17 Mar 2023 21:02:44 +0200 > From: Eli Zaretskii <eliz@HIDDEN> > > > > What is TERM set to on that system? > > > > In a plain GNOME Terminal, i.e. outside screen: > > > > xterm-256color And what is it set to _inside_ screen?
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 17 Mar 2023 19:02:50 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 17 15:02:50 2023 Received: from localhost ([127.0.0.1]:45644 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pdFLm-0003Zf-0q for submit <at> debbugs.gnu.org; Fri, 17 Mar 2023 15:02:50 -0400 Received: from eggs.gnu.org ([209.51.188.92]:60818) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1pdFLk-0003ZS-CM for 62237 <at> debbugs.gnu.org; Fri, 17 Mar 2023 15:02:48 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdFLf-0007Lp-2E; Fri, 17 Mar 2023 15:02:43 -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=LSmapKqK0sDop3+Oafi9QJLHRj2qABfqBHV5UAw6r2U=; b=cGbJcSS+egYP L2HrixmdRZEa2AMlRDxXTihSK0SnCUm0ppqt9m8P2Nucy+/NM7ghwetaZXTE+KuiI4gpZbLpspVfp oGneN34/uCbsZ0FtiA4Qz/2Lsvpa8+SAKb3D1vw9txQCKY72aB6XJSnVFAZrK7EU//BlToWL7D4hV R4It9vid0zxeOlmjTY5bOyD6TyTzvFC6QQy1G2l1bqIx22lpwF3V7pvRxUneRJR7B+kskg38GREP6 Q8M7y8nnzes9URcKPEaXhRXGg8VfkZQCaQWxJrBXwNgEGtJrEIJxUBPA5+jglZjogwPlszzJb5RPr CGWlW1tS2nWA4bwWytZgBQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdFLe-0005oC-H1; Fri, 17 Mar 2023 15:02:42 -0400 Date: Fri, 17 Mar 2023 21:02:44 +0200 Message-Id: <83lejvciaz.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Sebastian Tennant <sdt@HIDDEN> In-Reply-To: <87ttyj44cp.fsf@HIDDEN> (message from Sebastian Tennant on Fri, 17 Mar 2023 18:31:18 +0000) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87y1nv4af0.fsf@HIDDEN> <83zg8bcosc.fsf@HIDDEN> <87ttyj44cp.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: 62237 <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: Sebastian Tennant <sdt@HIDDEN> > Cc: 62237 <at> debbugs.gnu.org > Date: Fri, 17 Mar 2023 18:31:18 +0000 > > > No, Emacs 30 is good enough. (Your report says Emacs 28.1, which is > > why I asked.) > > It's easy to miss the "or higher". The "or higher" is not useful because it says nothing about the versions you actually tested. It could be Emacs 28.2, for example. Please always tell all the details without assuming that our crystal balls are clear enough to see them. > > What is TERM set to on that system? > > In a plain GNOME Terminal, i.e. outside screen: > > xterm-256color That's 256 colors, not 64-bit true-color terminal, AFAIU. > > It also says that your terminal actually supports only 88 colors. > > How do you infer that? By looking at the color names. > > So you should unset COLORTERM in your environment > > That's precisely the fix I discovered yesterday. Then I guess this bug can be closed? > According to: > > https://github.com/termstandard/colors > > command: > > $ printf "\x1b[38;2;255;100;0mTRUECOLOR\x1b[0m\n" > > shows your terminal is capable of truecolor if the word TRUECOLOR is > printed in brown. According to the result of this test, GNOME > Terminal (3.38.3) _is_ truecolor enabled. Which standard of true color does it support? > I can observe the same broken colours in xterm (under the same > conditions) shipped by Debian bullseye. > > I'm sure it has to do with screen and will investigate whther or not > my version of screen supports truecolor. Thanks.
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 17 Mar 2023 18:55:29 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 17 14:55:29 2023 Received: from localhost ([127.0.0.1]:45629 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pdFEf-0003NJ-Br for submit <at> debbugs.gnu.org; Fri, 17 Mar 2023 14:55:29 -0400 Received: from eggs.gnu.org ([209.51.188.92]:53176) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1pdFEd-0003N7-Pr for 62237 <at> debbugs.gnu.org; Fri, 17 Mar 2023 14:55:28 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdFEY-0004e1-4s; Fri, 17 Mar 2023 14:55:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=er8mI40MPHpC7SFHPcinU9BnC2E49WrqU1Dg52uGFNA=; b=YbPZJD2FLiVLIeP5mRhJ fLpVqX3tgU0yKz8XIYqJRCsGkUrJs8yn4g7tFuCdXVXkE3YPKJSVZndexAX8JfqzOD/phcsyqfcv+ Fm45kol8dXDYjd2vRwk6HU6+v235bjmdjgWd7zSdOGgRP9J+cU3xmKdkeIcDf51ueZgCshhiawRip URSRZ6a224Ft861FF22p9JETsR8YiBCQNKEKn3C4xIc5Sm7055fS6jausakOOhCV+rDriDb3pD7C5 K2KsFTtpO9PxkspZgq1atM/6cE0z3U+FSppCg1bzWJVX+0488IrSBbdFXMYUCaRDN/Cr8NTjy7oEH QUZslTtfv3fQVA==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdFEX-0002JY-JZ; Fri, 17 Mar 2023 14:55:21 -0400 Date: Fri, 17 Mar 2023 20:55:23 +0200 Message-Id: <83pm97cin8.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Robert Pluim <rpluim@HIDDEN> In-Reply-To: <87sfe3s26k.fsf@HIDDEN> (message from Robert Pluim on Fri, 17 Mar 2023 18:44:19 +0100) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN> <87sfe3s26k.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: sdt@HIDDEN, 62237 <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: Robert Pluim <rpluim@HIDDEN> > Cc: sdt@HIDDEN, 62237 <at> debbugs.gnu.org > Date: Fri, 17 Mar 2023 18:44:19 +0100 > > Eli> Is this screen.FOO format documented somewhere in screen's > Eli> documentation? > > Yes: > > When screen tries to figure out a terminal name for itself, it first > looks for an entry named "screen.<term>", where <term> is the contents > of your $TERM variable. If no such entry exists, screen tries "screen" > (or "screen-w" if the terminal is wide (132 cols or more)). If even > this entry cannot be found, "vt100" is used as a substitute. > > The idea is that if you have a terminal which doesn't support an impor‐ > tant feature (e.g. delete char or clear to EOS) you can build a new > termcap/terminfo entry for screen (named "screen.<dumbterm>") in which > this capability has been disabled. If this entry is installed on your > machines you are able to do a rlogin and still keep the correct term‐ > --> cap/terminfo entry. The terminal name is put in the $TERM variable of > all new windows. Screen also sets the $TERMCAP variable reflecting the > capabilities of the virtual terminal emulated. Notice that, however, on > machines using the terminfo database this variable has no effect. Fur‐ > thermore, the variable $WINDOW is set to the window number of each win‐ > dow. This seems to tell how 'screen' figures out the terminal name, not how it sets TERM. I asked who and why sets TERM to screen.SOMETHING.
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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Fri, 17 Mar 2023 14:31:20 -0400 (EDT) Received: from sebyte by balor with local (Exim 4.94.2) (envelope-from <sebyte@HIDDEN>) id 1pdErG-001wTE-KS; Fri, 17 Mar 2023 18:31:18 +0000 From: Sebastian Tennant <sdt@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87y1nv4af0.fsf@HIDDEN> <83zg8bcosc.fsf@HIDDEN> Date: Fri, 17 Mar 2023 18:31:18 +0000 In-Reply-To: <83zg8bcosc.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 17 Mar 2023 18:42:43 +0200") Message-ID: <87ttyj44cp.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.5 (/) X-Debbugs-Envelope-To: 62237 Cc: 62237 <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: -1.5 (-) Quoth Eli Zaretskii <eliz@HIDDEN> on Fri, 17 Mar 2023 18:42:43 +0200: >> From: Sebastian Tennant <sdt@HIDDEN> >> Cc: 62237 <at> debbugs.gnu.org >> Date: Fri, 17 Mar 2023 16:20:19 +0000 >> >> [=E2=80=A6] >> The photos happen to show an Emacs I built from master a couple of >> days ago, i.e. Emacs 30.0.50. If you'd still like me to test branch >> emacs-29, then let me know and I will happily do so. > > No, Emacs 30 is good enough. (Your report says Emacs 28.1, which is > why I asked.) It's easy to miss the "or higher". >> [=E2=80=A6] >> This lead me to investigate whether or not COLORTERM was set in my >> environment. I'm running Debian bullseye and terminfo is installed >> but, nevertheless, GNOME Terminal sets COLORTERM=3Dtruecolor by default. > > What is TERM set to on that system? In a plain GNOME Terminal, i.e. outside screen: xterm-256color >> [=E2=80=A6] >> >> https://download.sebyte.me/misc/truecolor-active.png >> https://download.sebyte.me/misc/truecolor-inactive.png > > This seems to say that your terminal isn't compatible with what > Emacs assumes under COLORTERM=3Dtruecolor. It would seem so. > It also says that your terminal actually supports only 88 colors. How do you infer that? > So you should unset COLORTERM in your environment That's precisely the fix I discovered yesterday. > or use another terminal emulator (like 256-color Xterm or some > really true-color emulator). According to: https://github.com/termstandard/colors command: $ printf "\x1b[38;2;255;100;0mTRUECOLOR\x1b[0m\n" shows your terminal is capable of truecolor if the word TRUECOLOR is printed in brown. According to the result of this test, GNOME Terminal (3.38.3) _is_ truecolor enabled. I can observe the same broken colours in xterm (under the same conditions) shipped by Debian bullseye. I'm sure it has to do with screen and will investigate whther or not my version of screen supports truecolor. Seb
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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From: Robert Pluim <rpluim@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in
Emacsen built without X under GNU Screen
In-Reply-To: <833563e3xc.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 17 Mar
2023 18:30:23 +0200")
References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN>
<87wn3fs7yw.fsf@HIDDEN> <833563e3xc.fsf@HIDDEN>
Date: Fri, 17 Mar 2023 18:44:19 +0100
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>>>>> On Fri, 17 Mar 2023 18:30:23 +0200, Eli Zaretskii <eliz@HIDDEN> said:
>> From: Robert Pluim <rpluim@HIDDEN>
>> Cc: Sebastian Tennant <sdt@HIDDEN>, 62237 <at> debbugs.gnu.org
>> Date: Fri, 17 Mar 2023 16:39:19 +0100
>>=20
>> For reasons unknown to me, I actually have COLORTERM=3Dtruecolor set=
in
>> my environment, which tickles this issue. But the only reason it does
>> so is because under screen by default I get
>> TERM=3Dscreen.xterm-256color. If I do
>>=20
>> TERM=3Dxterm-256color src/emacs -Q -nw
>>=20
>> then I get 24bit colour (according to `display-color-cells')
>>=20
>> I guess we could drop the 'screen.' prefix in
>> `init_display_interactive', although that does feel like a hack.
Eli> Why not in screen.el?
Because the 24 bit colour detection is done in init_tty. By the time
we get to screen.el it=CA=BCs too late.
Eli> Is this screen.FOO format documented somewhere in screen's
Eli> documentation?
Yes:
When screen tries to figure out a terminal name for itself, it fi=
rst
looks for an entry named "screen.<term>", where <term> is the conte=
nts
of your $TERM variable. If no such entry exists, screen tries "scre=
en"
(or "screen-w" if the terminal is wide (132 cols or more)). If e=
ven
this entry cannot be found, "vt100" is used as a substitute.
The idea is that if you have a terminal which doesn't support an imp=
or=E2=80=90
tant feature (e.g. delete char or clear to EOS) you can build a =
new
termcap/terminfo entry for screen (named "screen.<dumbterm>") in wh=
ich
this capability has been disabled. If this entry is installed on y=
our
machines you are able to do a rlogin and still keep the correct te=
rm=E2=80=90
--> cap/terminfo entry. The terminal name is put in the $TERM variable=
of
all new windows. Screen also sets the $TERMCAP variable reflecting =
the
capabilities of the virtual terminal emulated. Notice that, however,=
on
machines using the terminfo database this variable has no effect. F=
ur=E2=80=90
thermore, the variable $WINDOW is set to the window number of each w=
in=E2=80=90
dow.
Robert
--=20
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 17 Mar 2023 16:42:50 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 17 12:42:50 2023 Received: from localhost ([127.0.0.1]:45488 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pdDAH-0005eK-Jl for submit <at> debbugs.gnu.org; Fri, 17 Mar 2023 12:42:50 -0400 Received: from eggs.gnu.org ([209.51.188.92]:40538) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1pdDAG-0005e8-9p for 62237 <at> debbugs.gnu.org; Fri, 17 Mar 2023 12:42:48 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdDAA-0006dQ-JB; Fri, 17 Mar 2023 12:42:42 -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=hTDDfKNQP8YeKDLWyuvaiZ12b8+TYCTsBazMJMkNLNo=; b=l6PTr79TAuAV P3Xw87P8nGlZd02rMGZGetsqo8z/TNpKl/Tt+hCeHL9FZ46dpsXAWt0hvcpQ5XORZ13abq+fIL8aZ Jxb6HOxH/S1UTfbUHjGai3dX3pSt9cRze7rThhxU4IsjYTz4+nZkCIOZ5fyqmIw7/ts96QuhK5JI6 LWeGZ4ClHjh51SYai3hWbKjuXMBpAWg0ynuY/D6nj+bQqt4Jo1qLN6ZSRv7r1Pux4JWit4WJMdVHw JBY/G2ry97BwpUOAg6B/RLUR+8dfAlcz7mDjDYUF4WSjr7fwyGh9FbsVkKzwimDqViSWHuqPcWYJl sRT80R4rJQcnP4uOBmh4ZQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pdDAA-0007XU-2D; Fri, 17 Mar 2023 12:42:42 -0400 Date: Fri, 17 Mar 2023 18:42:43 +0200 Message-Id: <83zg8bcosc.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Sebastian Tennant <sdt@HIDDEN> In-Reply-To: <87y1nv4af0.fsf@HIDDEN> (message from Sebastian Tennant on Fri, 17 Mar 2023 16:20:19 +0000) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> <87y1nv4af0.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: 62237 <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: Sebastian Tennant <sdt@HIDDEN> > Cc: 62237 <at> debbugs.gnu.org > Date: Fri, 17 Mar 2023 16:20:19 +0000 > > > First, if you can build the latest emacs-29 branch of the Emacs Git > > repository, please try that and tell whether the problem persists or > > have been solved in the meantime. > > The photos happen to show an Emacs I built from master a couple of > days ago, i.e. Emacs 30.0.50. If you'd still like me to test branch > emacs-29, then let me know and I will happily do so. No, Emacs 30 is good enough. (Your report says Emacs 28.1, which is why I asked.) > ** Emacs can support 24-bit color TTY without terminfo database. > If your text-mode terminal supports 24-bit true color, but your system > lacks the terminfo database, you can instruct Emacs to support 24-bit > true color by setting 'COLORTERM=truecolor' in the environment. This is > useful on systems such as FreeBSD which ships only with "etc/termcap". > > This lead me to investigate whether or not COLORTERM was set in my > environment. I'm running Debian bullseye and terminfo is installed > but, nevertheless, GNOME Terminal sets COLORTERM=truecolor by default. What is TERM set to on that system? > > Finally, please show the display produced by "M-x > > list-colors-display" in both cases: when COLORTERM=truecolor is and > > isn't set. It is important for us to know how many colors Emacs > > uses in each situation. > > I've updated the screenshots to show the output of > #'list-colors-display. Here are the links again, for your > convenience. > > https://download.sebyte.me/misc/truecolor-active.png > https://download.sebyte.me/misc/truecolor-inactive.png This seems to say that your terminal isn't compatible with what Emacs assumes under COLORTERM=truecolor. It also says that your terminal actually supports only 88 colors. So you should unset COLORTERM in your environment, or use another terminal emulator (like 256-color Xterm or some really true-color emulator).
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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Fri, 17 Mar 2023 12:20:21 -0400 (EDT) Received: from sebyte by balor with local (Exim 4.94.2) (envelope-from <sebyte@HIDDEN>) id 1pdCoV-001w3s-VZ; Fri, 17 Mar 2023 16:20:19 +0000 From: Sebastian Tennant <sdt@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.3 (gnu/linux) Date: Fri, 17 Mar 2023 16:20:19 +0000 Message-ID: <87y1nv4af0.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.4 (/) X-Debbugs-Envelope-To: 62237 Cc: 62237 <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: -1.4 (-) Hello Eli, Thanks for your prompt response. Quoth Eli Zaretskii <eliz@HIDDEN> on Fri, 17 Mar 2023 14:15:34 +0200: >> From: Sebastian Tennant <sdt@HIDDEN> >> Date: Fri, 17 Mar 2023 09:41:36 +0000 >> >> Summary: Support for 24-bit true colour, added in Emacs 28.1, breaks >> colours in Emacsen built without X support and running under >> GNU Screen (v4.08.00). >> [=E2=80=A6] > > Thanks for the report, but it lacks several crucial details for us > to investigate the problem. > > First, if you can build the latest emacs-29 branch of the Emacs Git > repository, please try that and tell whether the problem persists or > have been solved in the meantime. The photos happen to show an Emacs I built from master a couple of days ago, i.e. Emacs 30.0.50. If you'd still like me to test branch emacs-29, then let me know and I will happily do so. > [=E2=80=A6] > > [T]he user should _only_ set it if the text-mode terminal actually > supports true color using the commands Emacs expects to work in that > case, but Emacs cannot detect that without COLORTERM=3Dtruecolor being > set. Is that your case? Nope. Let me explain. I've been unable to move beyond 27.2 (on my laptops) for over a year because of these broken colors. I didn't file a bug report sooner because I had no idea what the cause of the prolem was. Yesterday, I read this entry in etc/NEWS.28: ** Emacs can support 24-bit color TTY without terminfo database. If your text-mode terminal supports 24-bit true color, but your system lacks the terminfo database, you can instruct Emacs to support 24-bit true color by setting 'COLORTERM=3Dtruecolor' in the environment. This is useful on systems such as FreeBSD which ships only with "etc/termcap". This lead me to investigate whether or not COLORTERM was set in my environment. I'm running Debian bullseye and terminfo is installed but, nevertheless, GNOME Terminal sets COLORTERM=3Dtruecolor by default. I discovered that if I unset COLORTERM, colors start working again! (In Emacsen I've built without X, running in a screen). To be clear, the colors are only broken in Emacsen running in a screen. Outside of screen, the colors are fine. > Finally, please show the display produced by "M-x > list-colors-display" in both cases: when COLORTERM=3Dtruecolor is and > isn't set. It is important for us to know how many colors Emacs > uses in each situation. I've updated the screenshots to show the output of #'list-colors-display. Here are the links again, for your convenience. https://download.sebyte.me/misc/truecolor-active.png https://download.sebyte.me/misc/truecolor-inactive.png Seb
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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From: Robert Pluim <rpluim@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in
Emacsen built without X under GNU Screen
In-Reply-To: <83h6ujefq1.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 17 Mar
2023 14:15:34 +0200")
References: <87sfe390kv.fsf@HIDDEN> <83h6ujefq1.fsf@HIDDEN>
Date: Fri, 17 Mar 2023 16:39:19 +0100
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>>>>> On Fri, 17 Mar 2023 14:15:34 +0200, Eli Zaretskii <eliz@HIDDEN> said:
Eli> If the problem persists in Emacs 29, then please tell why you need to
Eli> use COLORTERM=truecolor at all. Emacs uses that as fallback, in case
Eli> all the other known methods of specifying true color via terminfo
Eli> didn't work. This fallback relies on an assumption regarding the
Eli> commands to send to the terminal to turn on and off the colors, see
Eli> the file term.c in the Emacs source tree around line 4160. The other
Eli> known methods of specifying support for true color use
Eli> 'setf24'/'setb24' capabilities, or the 'RGB' flag is set by terminfo.
Eli> So setting COLORTERM=truecolor is the responsibility of the user: the
Eli> user should _only_ set it if the text-mode terminal actually supports
Eli> true color using the commands Emacs expects to work in that case, but
Eli> Emacs cannot detect that without COLORTERM=truecolor being set. Is
Eli> that your case?
Eli> Finally, please show the display produced by "M-x list-colors-display"
Eli> in both cases: when COLORTERM=truecolor is and isn't set. It is
Eli> important for us to know how many colors Emacs uses in each situation.
For reasons unknown to me, I actually have COLORTERM=truecolor set in
my environment, which tickles this issue. But the only reason it does
so is because under screen by default I get
TERM=screen.xterm-256color. If I do
TERM=xterm-256color src/emacs -Q -nw
then I get 24bit colour (according to `display-color-cells')
I guess we could drop the 'screen.' prefix in
`init_display_interactive', although that does feel like a hack.
Robert
--
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
Full text available.Received: (at 62237) by debbugs.gnu.org; 17 Mar 2023 12:15:42 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 17 08:15:41 2023 Received: from localhost ([127.0.0.1]:43891 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pd8zl-0001Hz-Fe for submit <at> debbugs.gnu.org; Fri, 17 Mar 2023 08:15:41 -0400 Received: from eggs.gnu.org ([209.51.188.92]:38126) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1pd8zk-00012s-JF for 62237 <at> debbugs.gnu.org; Fri, 17 Mar 2023 08:15:41 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pd8zf-00089O-0V; Fri, 17 Mar 2023 08:15:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=SW3bGwPYRAJ9GsauytuOZd+/2XnG0ymjWtalPSKlPz8=; b=mjp5sj3O+Z85c9M6UH87 mBMP7LWmvC7fk/iqJsqDT1ZxsSKdWgMT+ac7xFU2dX4K+qrM6X+o78qefwjm+2ZfnXZd2jdxf8jOm Xuhr2HN/GSvAIbvU4vnJRHnvuJVS0/7+rl/zuMn2rHiYIvY+YCmLRj2U5QrLSjqH0P7PBFip+CQ6k caTTJzZwUEemMutkH8BeappNt8XkQ3OqSkBZF6alNSRih4azLVutGdyyv/L72X/Rk4C2Sk37EgnW0 gHVyXWDBaTqAV6gA9o0Ji2p5baUGyESJptTvUuNjxdqBEH+GBLqvz3mb+r8pXJgrax2hfj8I4p6rl GuU+Od0VJLTb0w==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pd8zd-0005BJ-Ff; Fri, 17 Mar 2023 08:15:34 -0400 Date: Fri, 17 Mar 2023 14:15:34 +0200 Message-Id: <83h6ujefq1.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Sebastian Tennant <sdt@HIDDEN> In-Reply-To: <87sfe390kv.fsf@HIDDEN> (message from Sebastian Tennant on Fri, 17 Mar 2023 09:41:36 +0000) Subject: Re: bug#62237: 28.1 or higher: 24-bit true color breaks colours in Emacsen built without X under GNU Screen References: <87sfe390kv.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 62237 Cc: 62237 <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: Sebastian Tennant <sdt@HIDDEN> > Date: Fri, 17 Mar 2023 09:41:36 +0000 > > Summary: Support for 24-bit true colour, added in Emacs 28.1, breaks > colours in Emacsen built without X support and running under > GNU Screen (v4.08.00). > > Steps to reproduce: > > 1. Build Emacs >= 28.1 without X support. The two configurations I have > tested are below: > > ./configure\ ./configure\ > --prefix=[…]\ --prefix=[…]\ > --enable-check-lisp-object-type\ --enable-check-lisp-object-type\ > --disable-acl\ --disable-acl\ > --without-dbus\ --without-all\ > --without-gconf\ --without-x\ > --without-gif\ --with-file-notification=yes\ > --without-gsettings\ --with-gnutls\ > --without-jpeg\ --with-gpm\ > --without-modules\ --with-json\ > --without-png\ --with-mailutils\ > --without-rsvg\ --with-modules\ > --without-selinux\ --with-native-compilation\ > --without-sound\ --with-libsystemd\ > --without-tiff\ --with-small-ja-dic\ > --without-x\ --with-sqlite3\ > --without-xpm\ --with-threads\ > --with-xml2\ > --with-zlib\ > > 2. Launch a terminal program (e.g. GNOME Terminal) and run GNU Screen > (bypassing any .screenrc): > > $ touch foo > $ screen -c foo > > 3. Run Emacs with 24-bit true colour active and observe the broken colours: > > $ COLORTERM=truecolor ./src/emacs -Q > > Screenshot: https://download.sebyte.me/misc/truecolor-active.png > > 4. Run Emacs with 24-bit true colour inactive and observe the correct colours: > > $ COLORTERM= ./src/emacs -Q > > Screenshot: https://download.sebyte.me/misc/truecolor-inactive.png Thanks for the report, but it lacks several crucial details for us to investigate the problem. First, if you can build the latest emacs-29 branch of the Emacs Git repository, please try that and tell whether the problem persists or have been solved in the meantime. If the problem persists in Emacs 29, then please tell why you need to use COLORTERM=truecolor at all. Emacs uses that as fallback, in case all the other known methods of specifying true color via terminfo didn't work. This fallback relies on an assumption regarding the commands to send to the terminal to turn on and off the colors, see the file term.c in the Emacs source tree around line 4160. The other known methods of specifying support for true color use 'setf24'/'setb24' capabilities, or the 'RGB' flag is set by terminfo. So setting COLORTERM=truecolor is the responsibility of the user: the user should _only_ set it if the text-mode terminal actually supports true color using the commands Emacs expects to work in that case, but Emacs cannot detect that without COLORTERM=truecolor being set. Is that your case? Finally, please show the display produced by "M-x list-colors-display" in both cases: when COLORTERM=truecolor is and isn't set. It is important for us to know how many colors Emacs uses in each situation. Thanks.
bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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From: Sebastian Tennant <sdt@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 28.1 or higher: 24-bit true color breaks colours in Emacsen built
without X under GNU Screen
Date: Fri, 17 Mar 2023 09:41:36 +0000
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Hello there,
Summary: Support for 24-bit true colour, added in Emacs 28.1, breaks
colours in Emacsen built without X support and running under
GNU Screen (v4.08.00).
Steps to reproduce:
1. Build Emacs >=3D 28.1 without X support. The two configurations I have
tested are below:
./configure\ ./configure\
--prefix=3D[=E2=80=A6]\ --prefix=3D[=E2=80=
=A6]\
--enable-check-lisp-object-type\ --enable-check-lisp-object-ty=
pe\
--disable-acl\ --disable-acl\
--without-dbus\ --without-all\
--without-gconf\ --without-x\
--without-gif\ --with-file-notification=3Dye=
s\
--without-gsettings\ --with-gnutls\
--without-jpeg\ --with-gpm\
--without-modules\ --with-json\
--without-png\ --with-mailutils\
--without-rsvg\ --with-modules\
--without-selinux\ --with-native-compilation\
--without-sound\ --with-libsystemd\
--without-tiff\ --with-small-ja-dic\
--without-x\ --with-sqlite3\
--without-xpm\ --with-threads\
--with-xml2\
--with-zlib\
2. Launch a terminal program (e.g. GNOME Terminal) and run GNU Screen
(bypassing any .screenrc):
$ touch foo
$ screen -c foo
3. Run Emacs with 24-bit true colour active and observe the broken colours:
$ COLORTERM=3Dtruecolor ./src/emacs -Q
Screenshot: https://download.sebyte.me/misc/truecolor-active.png
4. Run Emacs with 24-bit true colour inactive and observe the correct colo=
urs:
$ COLORTERM=3D ./src/emacs -Q
Screenshot: https://download.sebyte.me/misc/truecolor-inactive.png
Sebastian Tennant <sdt@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#62237; Package emacs.
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