Received: (at 40507) by debbugs.gnu.org; 8 Apr 2020 14:32:10 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Apr 08 10:32:10 2020 Received: from localhost ([127.0.0.1]:52782 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1jMBkQ-0005hO-Cj for submit <at> debbugs.gnu.org; Wed, 08 Apr 2020 10:32:10 -0400 Received: from fmfe36.onbox.hu ([46.107.16.241]:23348 helo=web-out.onbox.hu) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <emacsuser@HIDDEN>) id 1jMBkO-0005bX-Qi for 40507 <at> debbugs.gnu.org; Wed, 08 Apr 2020 10:32:09 -0400 X-fm-smtp-source: yes Received: from localhost (localhost [84.236.72.86]) by web-out.onbox.hu (Postfix) with SMTP id 48y6DG2pk3z13r2; Wed, 8 Apr 2020 16:31:54 +0200 (CEST) From: ndame <emacsuser@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Message-ID: <Aybczw.PubH8FLk3bH.ofhQrFi8SJPJJy4KiEw@HIDDEN> In-Reply-To: <83ftdeoyfe.fsf@HIDDEN> References: <Aybcfg.fnPrOxYoUCiO.4znKImjmOeXlVX7c1qTN@HIDDEN> <83ftdeoyfe.fsf@HIDDEN> Subject: Re: bug#40507: 26.2; truncate-lines does not respect line-height MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_106541_995734024.1586356012958" X-AccountId: 57978162 X-Originating-Ip: 84.236.72.86 Date: Wed, 8 Apr 2020 16:31:54 +0200 (CEST) X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduhedrudejgdejiecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucggtfgfnhhsuhgsshgtrhhisggvpdcuhfftgffgofetkffnnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvffkjghfufggtghiffesrgdtregstddtudenucfhrhhomhepnhgurghmvgcuoegvmhgrtghsuhhsvghrsehfrhgvvghmrghilhdrhhhuqeenucfkphepkeegrddvfeeirdejvddrkeeinecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehhvghloheppdhinhgvthepkeegrddvfeeirdejvddrkeeipdhmrghilhhfrhhomhepvghmrggtshhushgvrhesfhhrvggvmhgrihhlrdhhuhdprhgtphhtthhopegvlhhiiiesghhnuhdrohhrgh X-Spam-Score: 1.3 (+) X-Spam-Report: Spam detection software, running on the system "debbugs.gnu.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: > In terms of the implementation, the feature you expected would require > the display engine consider characters that are not visible in the > window, something that the display code tries hard to av [...] Content analysis details: (1.3 points, 10.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 1.3 RCVD_IN_RP_RNBL RBL: Relay in RNBL, https://senderscore.org/blacklistlookup/ [46.107.16.241 listed in bl.score.senderscore.com] -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [46.107.16.241 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (emacsuser[at]freemail.hu) 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Debbugs-Envelope-To: 40507 Cc: "40507 <at> debbugs.gnu.org" <40507 <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: 0.3 (/) ------=_Part_106541_995734024.1586356012958 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable > In terms of the implementation, the feature you expected would require > the display engine consider characters that are not visible in the > window, something that the display code tries hard to avoid doing (so > it could be faster). I understand there can be performance implications. It may be worth some additional lines in the manual that it has an effect only if the newline is= =C2=A0 actually on the screen. (Maybe obvious, but I expected it to have an effect= .) And also the workaround could be mentioned that the user can place a=C2=A0 display line-height property to some other character on the line (preferabl= y a space, so it doesn't affect the text appearance) which has the same effec= t. ------=_Part_106541_995734024.1586356012958 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit > In terms of the implementation, the feature you expected would require<br /> > the display engine consider characters that are not visible in the<br /> > window, something that the display code tries hard to avoid doing (so<br /> > it could be faster).<br /> <br /> I understand there can be performance implications. It may be worth some<br /> additional lines in the manual that it has an effect only if the newline is <br /> actually on the screen. (Maybe obvious, but I expected it to have an effect.)<br /> <br /> And also the workaround could be mentioned that the user can place a <br /> display line-height property to some other character on the line (preferably<br /> a space, so it doesn't affect the text appearance) which has the same effect. ------=_Part_106541_995734024.1586356012958--
bug-gnu-emacs@HIDDEN:bug#40507; Package emacs.
Full text available.Eli Zaretskii <eliz@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 40507) by debbugs.gnu.org; 8 Apr 2020 14:16:32 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Apr 08 10:16:32 2020 Received: from localhost ([127.0.0.1]:52767 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1jMBVI-0003P6-Aq for submit <at> debbugs.gnu.org; Wed, 08 Apr 2020 10:16:32 -0400 Received: from eggs.gnu.org ([209.51.188.92]:33975) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1jMBVF-0003Op-Uw; Wed, 08 Apr 2020 10:16:30 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:54628) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <eliz@HIDDEN>) id 1jMBVA-0006hl-FK; Wed, 08 Apr 2020 10:16:24 -0400 Received: from [176.228.60.248] (port=1833 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from <eliz@HIDDEN>) id 1jMBV9-0002Mk-GJ; Wed, 08 Apr 2020 10:16:24 -0400 Date: Wed, 08 Apr 2020 17:16:21 +0300 Message-Id: <83ftdeoyfe.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: ndame <emacsuser@HIDDEN> In-Reply-To: <Aybcfg.fnPrOxYoUCiO.4znKImjmOeXlVX7c1qTN@HIDDEN> (message from ndame on Wed, 8 Apr 2020 15:51:09 +0200 (CEST)) Subject: Re: bug#40507: 26.2; truncate-lines does not respect line-height References: <Aybcfg.fnPrOxYoUCiO.4znKImjmOeXlVX7c1qTN@HIDDEN> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 40507 Cc: 40507 <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: -1.7 (-) severity 40507 wishlist thanks > From: ndame <emacsuser@HIDDEN> > Date: Wed, 8 Apr 2020 15:51:09 +0200 (CEST) > > Even if the newline is not on screen, it should affect the height of the truncated > line, because that's why the package developer added line-height to the newline, > so the line has some spacing. That's not what this feature was designed for. It is conceptually the same as having a character in a line whose height is greater than those of others: the line's hight will be increased only if that taller character is displayed. The line-height property you put on a newline is basically a means to force the newline character have some specified height, even though the newline doesn't have a glyph with a definite metrics. That's why this property is placed on a newline, not on any other character. In terms of the implementation, the feature you expected would require the display engine consider characters that are not visible in the window, something that the display code tries hard to avoid doing (so it could be faster).
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Subject: 26.2; truncate-lines does not respect line-height
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Content preview: The manual says: ‘line-height’ A newline can have
a ‘line-height’ text or overlay property that controls the total
height of the display line ending in that newline. *Note Line Height
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------=_Part_106236_677907669.1586353378589
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The manual says:
=E2=80=98line-height=E2=80=99
=C2=A0 =C2=A0 =C2=A0A newline can have a =E2=80=98line-height=E2=80=99 text=
or overlay property that
=C2=A0 =C2=A0 =C2=A0controls the total height of the display line ending in=
that
=C2=A0 =C2=A0 =C2=A0newline. =C2=A0*Note Line Height::.
If you set this for a bunch of lines then it properly adds spacing to those=
lines.
But if you have long lines in the buffer and =C2=A0 (setq truncate-lines t)=
then=C2=A0
all lines will be properly spaced, except for the long lines, because the=
=C2=A0
newline is out of screen.
Even if the newline is not on screen, it should affect the height of the tr=
uncated=C2=A0
line, because that's why the package developer added line-height to the new=
line,
so the=C2=A0 line has some spacing.
=C2=A0
=C2=A0
------=_Part_106236_677907669.1586353378589
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
The manual says:<br />
<br />
‘line-height’<br />
     A newline can have a ‘line-height’ text or overlay property that<br />
     controls the total height of the display line ending in that<br />
     newline.  *Note Line Height::.<br />
<br />
If you set this for a bunch of lines then it properly adds spacing to those lines.<br />
<br />
But if you have long lines in the buffer and   (setq truncate-lines t) then <br />
all lines will be properly spaced, except for the long lines, because the <br />
newline is out of screen.<br />
<br />
Even if the newline is not on screen, it should affect the height of the truncated <br />
line, because that's why the package developer added line-height to the newline,<br />
so the  line has some spacing.<br />
 <br />
 
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Full text available.bug-gnu-emacs@HIDDEN:bug#40507; Package emacs.
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