* LMTX, BIdi, full paragraph, and spurious empty line
@ 2021-06-22 2:52 Rik Kabel
2021-06-23 22:10 ` Hans Hagen
0 siblings, 1 reply; 4+ messages in thread
From: Rik Kabel @ 2021-06-22 2:52 UTC (permalink / raw)
To: ntg-context
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Hello all,
Last October Denis Maier complained about a spurious empty line
generated with protrusion and bidi active and a full paragraph. (See
https://www.mail-archive.com/ntg-context@ntg.nl/msg95916.html
<https://www.mail-archive.com/ntg-context@ntg.nl/msg95916.html> or
similar on your favorite mail archive.)
I have recreated the issue without involving protrusion. When a
paragraph is very full and bidi is on, an extra line seems to be
generated. Without bidi there is no extra line. This is quite sensitive,
of course, to line width. I have probably 30 instances of it occurring
in a tightly-set bibliography. I would assume that it may occur in any
text, but have not noticed it in the body of my book.
I have created an example document that shows it. The problem disappears
if bidi is turned off (comment out the first non-comment line) but of
course then the RTL text is mis-set. In this example, the spurious line
appears after the Walt Kelly entry.
This was tested under ConTeXt ver: 2021.06.18 23:37 LMTX fmt:
2021.6.21, but is not a new problem with this version. /The problem does
not occur with MKIV from the same installation./
%% Demonstration of spurious line insertion on full paragraph with
bidi active
\setupdirections [bidi=on,method=unicode]
\definepapersize [Testing]
[width=6.69in]
\setuppapersize [Testing]
\setuplayout [width=fit,
backspace=1.4in,
cutspace=1in,
leftmargin=0.65in,
rightmargin=0.65in]
\setupwhitespace [small]
\setupbodyfont [libertinus,11pt]
\define\SetupBib{
\spaceskip 0.7\interwordspace plus .5\interwordstretch minus
\interwordshrink
\definedelimitedtext
[Exdent]
[leftmargin=1em,
indenting={yes,-1em},
indentnext=yes]}
\starttext
\input jojomayer
\input klein
\blank[2*line]
\SetupBib
\startExdent
Kelly, Cynthia C., ed. 2005. {\em Oppenheimer and the Manhattan
Project: Insights into J.~Robert Oppenheimer, ‘Father of the
Atomic Bomb’}. Singapore: World Scientific.
Kelly, Walt. 1953. {\em The Pogo Papers}. New York, NY: Simon
& Schuster.
Kuhn, Thomas S. 1962. {\em The Structure of Scientific
Revolutions}. Chicago, IL: University of Chicago Press.
Weinreich, Max. 1945. “Der YIVO un di problemen fun undzer
tsayt (דער ייִוואָ און די פּראָבלעמען פֿון אונדזער צײַט).”
{\em YIVO Bleter} 25 (1): 3--18. The title is translated as
{\em The YIVO and the problems of our time}, and also as
{\em The YIVO faces the post-war world}.
\stopExdent
\stoptext
Of course, there could be some other mechanism at work here than bidi,
but changing that clears the problem in this instance. (It may be the
adjustment to spaceskip that I use to tighten up the text in the
bibliography, and if it is, I welcome an alternative way to do that.)
--
Rik
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: LMTX, BIdi, full paragraph, and spurious empty line
2021-06-22 2:52 LMTX, BIdi, full paragraph, and spurious empty line Rik Kabel
@ 2021-06-23 22:10 ` Hans Hagen
2021-06-23 23:44 ` Rik Kabel
0 siblings, 1 reply; 4+ messages in thread
From: Hans Hagen @ 2021-06-23 22:10 UTC (permalink / raw)
To: mailing list for ConTeXt users, Rik Kabel
On 6/22/2021 4:52 AM, Rik Kabel wrote:
> Hello all,
>
> Last October Denis Maier complained about a spurious empty line
> generated with protrusion and bidi active and a full paragraph. (See
> https://www.mail-archive.com/ntg-context@ntg.nl/msg95916.html
> <https://www.mail-archive.com/ntg-context@ntg.nl/msg95916.html> or
> similar on your favorite mail archive.)
>
> I have recreated the issue without involving protrusion. When a
> paragraph is very full and bidi is on, an extra line seems to be
> generated. Without bidi there is no extra line. This is quite sensitive,
> of course, to line width. I have probably 30 instances of it occurring
> in a tightly-set bibliography. I would assume that it may occur in any
> text, but have not noticed it in the body of my book.
>
> I have created an example document that shows it. The problem disappears
> if bidi is turned off (comment out the first non-comment line) but of
> course then the RTL text is mis-set. In this example, the spurious line
> appears after the Walt Kelly entry.
>
> This was tested under ConTeXt ver: 2021.06.18 23:37 LMTX fmt:
> 2021.6.21, but is not a new problem with this version. /The problem does
> not occur with MKIV from the same installation./
>
> %% Demonstration of spurious line insertion on full paragraph with
> bidi active
>
> \setupdirections [bidi=on,method=unicode]
>
> \definepapersize [Testing]
> [width=6.69in]
> \setuppapersize [Testing]
>
> \setuplayout [width=fit,
> backspace=1.4in,
> cutspace=1in,
> leftmargin=0.65in,
> rightmargin=0.65in]
>
> \setupwhitespace [small]
>
> \setupbodyfont [libertinus,11pt]
>
> \define\SetupBib{
> \spaceskip 0.7\interwordspace plus .5\interwordstretch minus
> \interwordshrink
> \definedelimitedtext
> [Exdent]
> [leftmargin=1em,
> indenting={yes,-1em},
> indentnext=yes]}
>
> \starttext
> \input jojomayer
>
> \input klein
>
> \blank[2*line]
>
> \SetupBib
> \startExdent
>
> Kelly, Cynthia C., ed. 2005. {\em Oppenheimer and the Manhattan
> Project: Insights into J.~Robert Oppenheimer, ‘Father of the
> Atomic Bomb’}. Singapore: World Scientific.
>
> Kelly, Walt. 1953. {\em The Pogo Papers}. New York, NY: Simon
> & Schuster.
>
> Kuhn, Thomas S. 1962. {\em The Structure of Scientific
> Revolutions}. Chicago, IL: University of Chicago Press.
>
> Weinreich, Max. 1945. “Der YIVO un di problemen fun undzer
> tsayt (דער ייִוואָ און די פּראָבלעמען פֿון אונדזער צײַט).”
> {\em YIVO Bleter} 25 (1): 3--18. The title is translated as
> {\em The YIVO and the problems of our time}, and also as
> {\em The YIVO faces the post-war world}.
>
> \stopExdent
> \stoptext
>
> Of course, there could be some other mechanism at work here than bidi,
> but changing that clears the problem in this instance. (It may be the
> adjustment to spaceskip that I use to tighten up the text in the
> bibliography, and if it is, I welcome an alternative way to do that.)
I'll send you a possible fix but it needs a bit of testing. It has to do
with (probably spurious) spaces which means that the parbuilder then
considers the dir node to be a reasoable breakpoint (well, kin dof okay
as one gets what one asks for), but I'll be a bit more agressive in
dealing with that.
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: LMTX, BIdi, full paragraph, and spurious empty line
2021-06-23 22:10 ` Hans Hagen
@ 2021-06-23 23:44 ` Rik Kabel
2021-06-24 12:54 ` Rik Kabel
0 siblings, 1 reply; 4+ messages in thread
From: Rik Kabel @ 2021-06-23 23:44 UTC (permalink / raw)
To: Hans Hagen, mailing list for ConTeXt users
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On 6/23/2021 18:10, Hans Hagen wrote:
> On 6/22/2021 4:52 AM, Rik Kabel wrote:
>> [...]ome an alternative way to do that.)
> I'll send you a possible fix but it needs a bit of testing. It has to
> do with (probably spurious) spaces which means that the parbuilder
> then considers the dir node to be a reasoable breakpoint (well, kin
> dof okay as one gets what one asks for), but I'll be a bit more
> agressive in dealing with that.
>
> Hans
>
Thank you, Hans, for looking into this so soon.
I did try what you sent, but see no difference. I have eliminated the
changes to spaceskip as a cause and simplified the example, removing the
spaceskip and delimitedtext.
New example, in which I get a spurious line after the third and fourth
Walt Kelly entries:
%% Demonstration of spurious line insertion on full paragraph with bidi
\setupdirections [bidi=on,method=unicode]
\enabletrackers [typesetters.directions]
%\showmakeup [glue,dir]
\definepapersize [Testing]
[width=6.69in]
\setuppapersize [Testing]
\setuplayout [width=fit,
backspace=1.4in,
cutspace=1in,
leftmargin=0.65in,
rightmargin=0.65in]
\setupwhitespace [small]
\setupbodyfont [libertinus,11pt]
\startbuffer[Test]
Kelly, Cynthia C., ed. 2005. {\em Oppenheimer and the Manhattan
Project: Insights into J.~Robert Oppenheimer, ‘Father of the
Atomic Bomb’}. Singapore: World Scientific.
Kelly, Walt. 1953. {\em The Pogo Papers}. New York, NY Simon
& Schuster.
Kelly, Walt. 1953. {\em The Pogo Papers}. New York NY Simon
& Schuster.
Kelly, Walt. 1953. {\em The Pogo Papers}. New York, NY: Simon
& Schuster.
Kelly, Walt. 1953. {\em The Pogo Papers}. New York,, NY: Simon
& Schuster.
Kelly, Walt. 1953. {\em The Pogo Papers}. New York; NY Simon
& Schuster.
Kuhn, Thomas S. 1962. {\em The Structure of Scientific
Revolutions}. Chicago, IL: University of Chicago Press.
Weinreich, Max. 1945. “Der YIVO un di problemen fun undzer
tsayt (דער ייִוואָ און די פּראָבלעמען פֿון אונדזער צײַט).”
{\em YIVO Bleter} 25 (1): 3--18. The title is translated as
{\em The YIVO and the problems of our time}, and also as
{\em The YIVO faces the post-war world}.
\stopbuffer
\starttext
\getbuffer[Test]
\stoptext
--
Rik
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: LMTX, BIdi, full paragraph, and spurious empty line
2021-06-23 23:44 ` Rik Kabel
@ 2021-06-24 12:54 ` Rik Kabel
0 siblings, 0 replies; 4+ messages in thread
From: Rik Kabel @ 2021-06-24 12:54 UTC (permalink / raw)
To: ntg-context, Hans Hagen
On 6/23/2021 19:44, Rik Kabel wrote:
>
>
> On 6/23/2021 18:10, Hans Hagen wrote:
>> On 6/22/2021 4:52 AM, Rik Kabel wrote:
>>> [...]ome an alternative way to do that.)
>> I'll send you a possible fix but it needs a bit of testing. It has to
>> do with (probably spurious) spaces which means that the parbuilder
>> then considers the dir node to be a reasoable breakpoint (well, kin
>> dof okay as one gets what one asks for), but I'll be a bit more
>> agressive in dealing with that.
>>
>> Hans
>>
> Thank you, Hans, for looking into this so soon.
>
> [...]
Hans and all,
I mistakenly put the new code in the wrong instance. When I put it in
the right place and remade ConTeXt, all is well as far as my test
examples go and the spurious lines are gone.
Thank you for the fix.
--
Rik
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
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2021-06-24 12:54 ` Rik Kabel
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