Re: [NTG-context] Blank page inserted when text reaches column's end

2019-12-10 Thread Wolfgang Schuster 

Thangalin schrieb am 11.12.2019 um 02:51:

Commenting out the \page_grd_command_flush_page macro seems to have
reversed the effect. Any pages having columnar text that does not
extend to the last line are now suppressed. How would I go about
adding a conditional that checks to see whether the column is filled
before deciding if a page break is necessary?

\unprotect
\def\page_grd_stop{%
   \endgraf % needed, else wrong vsize in one par case
   \vfill % otherwise weird \placenotes[endnotes]
   \page_grd_command_set_vsize % needed
   \penalty\c_page_otr_eject_penalty
   %\page_grd_command_flush_page
   \page_otr_fill_and_eject_page
   \page_grd_command_set_vsize % why here
   \egroup
   \page_otr_command_set_vsize
   \page_otr_command_set_hsize}
\protect


Fails for the next example (the first page appears twice in the PDF and 
the second page is missing):


\setuplayout[grid=yes]

\starttext
  \startcolumnset[n=2]
    \dorecurse{100}{Line #1\par}
  \stopcolumnset
\stoptext

Wolfgang

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Re: [NTG-context] Blank page inserted when text reaches column's end

2019-12-10 Thread Thangalin 
Commenting out the \page_grd_command_flush_page macro seems to have
reversed the effect. Any pages having columnar text that does not
extend to the last line are now suppressed. How would I go about
adding a conditional that checks to see whether the column is filled
before deciding if a page break is necessary?

\unprotect
\def\page_grd_stop{%
  \endgraf % needed, else wrong vsize in one par case
  \vfill % otherwise weird \placenotes[endnotes]
  \page_grd_command_set_vsize % needed
  \penalty\c_page_otr_eject_penalty
  %\page_grd_command_flush_page
  \page_otr_fill_and_eject_page
  \page_grd_command_set_vsize % why here
  \egroup
  \page_otr_command_set_vsize
  \page_otr_command_set_hsize}
\protect

Thank you!
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Re: [NTG-context] Blank page inserted when text reaches column's end

2019-12-09 Thread Thangalin 
Thank you both. Neither approach removes the blank page with either
version 2019.06.11 or 2019.12.06 on Linux. Is there a specific version
of ConTeXt required? The code to generate the document resembles:

\setuppagenumbering[alternative=doublesided,page=no]
\installpagebreakhandler{last}{}

\setuplayout[grid=yes]

\starttext
  \startcolumnset[n=2]
\input knuth \input lorem \input lorem \input knuth
\dorecurse{3}{No TV and no beer make Homer something something.}
  \stopcolumnset
\stoptext

The second page remains, regardless of doublesided/singlesided or
pagebreakhandler.

Henri Menke pointed out that "page-cst.mkiv" contains an explicit line
break associated with stoppagegrid:

https://github.com/contextgarden/context-mirror/blob/f74c4055713ab52a11d12435eb04040ec6553129/tex/context/base/mkiv/page-cst.mkiv#L199-L201

Could this be grid itself be problematic?

Cheers!
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Re: [NTG-context] Blank page inserted when text reaches column's end

2019-12-09 Thread Wolfgang Schuster 

Denis Maier schrieb am 09.12.2019 um 09:41:

Am 09.12.2019 um 00:44 schrieb Thangalin:

When text reaches the end of a column, it appears to trigger inserting
a blank page. In the following code, \dorecurse{3} causes a blank page
to appear but \dorecurse{2} does not. The only difference is that when
set to 3, the additional text is written on the last line of the last
column. This scenario results in a blank page.

Any ideas how the blank page can be suppressed?

\showgrid
\setuplayout[grid=yes]

\starttext
   \startcolumnset[n=2]
 \input knuth \input lorem \input lorem \input knuth
 \dorecurse{3}{No TV and no beer make Homer something something.}
   \stopcolumnset
\stoptext

Version:

$ context --version
mtx-context | ConTeXt Process Management 1.03
mtx-context |
mtx-context | main context file:
/opt/context/tex/texmf-context/tex/context/base/mkiv/context.mkiv
mtx-context | current version: 2019.06.11 19:20

Thank you!


What about:
\installpagebreakhandler{last}{}

(I have this in most of my documents, but I'm not sure it works with 
columnsets.)


Better use this setup to get rid of the extra page in a doublesided 
document.


\setuppagenumbering[page=no]

Wolfgang

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Re: [NTG-context] Blank page inserted when text reaches column's end

2019-12-09 Thread Denis Maier 

Am 09.12.2019 um 00:44 schrieb Thangalin:

When text reaches the end of a column, it appears to trigger inserting
a blank page. In the following code, \dorecurse{3} causes a blank page
to appear but \dorecurse{2} does not. The only difference is that when
set to 3, the additional text is written on the last line of the last
column. This scenario results in a blank page.

Any ideas how the blank page can be suppressed?

\showgrid
\setuplayout[grid=yes]

\starttext
   \startcolumnset[n=2]
 \input knuth \input lorem \input lorem \input knuth
 \dorecurse{3}{No TV and no beer make Homer something something.}
   \stopcolumnset
\stoptext

Version:

$ context --version
mtx-context | ConTeXt Process Management 1.03
mtx-context |
mtx-context | main context file:
/opt/context/tex/texmf-context/tex/context/base/mkiv/context.mkiv
mtx-context | current version: 2019.06.11 19:20

Thank you!


What about:
\installpagebreakhandler{last}{}

(I have this in most of my documents, but I'm not sure it works with 
columnsets.)


Best,
Denis
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