Re: confusing columns balancing results

[Rik Kabel <context@rik.users.panix.com>]

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On 2017-07-13 20:05, Henri Menke wrote:
> On Fri, 2017-07-14 at 01:08 +0200, Floris van Manen wrote:
>> When i try to use five balanced columns on a landscape page, i get unexpected results.
>>
>>
>> \setuppapersize[A4, landscape]
>> \setupbodyfont[8pt]
>> \language[fr]
>> \setupcolumns[
>>      n=5,
>>      distance=4mm,
>>      balance=yes,
>>      tolerance=tolerant]
>> \setupfootertexts[][]
>> \setuplayout[
>>      backspace=10mm,
>>      width=277mm,
>>      height=fit,
>>      topspace=10mm,
>>      header=0mm,
>>      top=0mm,
>>      footer=0mm,
>>      bottom=0mm]
>> \setuppagenumber[state=none]
>> \setuppagenumber[state=stop]
>> \definelayout[WithoutMarginnotes][
>>      location={duplex},
>>      grid=no,
>>      topspace=1cm,
>>      height=19cm,
>>      backspace=1cm,
>>      cutspace=0cm,
>>      leftmargin=0cm,
>>      leftmargindistance=0.4cm,
>>      width=fit,
>>      rightmargindistance=0cm,
>>      rightmargin=0cm]
>>   \setuplayout[WithoutMarginnotes]
>>
>> \setuphead[section][
>>      align=normal,
>>      style=\tfa\ss,
>>      before={\blank},
>>      after={\blank[2pt]}]
>>
>>
> No problems here with latest beta.  Post a full MWE which reproduces the problem instead of
> snippets.
>
>
> \setuppapersize[A4, landscape]
> \setupbodyfont[8pt]
> \language[fr]
> \setupcolumns[
>      n=5,
>      distance=4mm,
>      balance=yes,
>      tolerance=tolerant]
> \setupfootertexts[][]
> \setuplayout[
>      backspace=10mm,
>      width=277mm,
>      height=fit,
>      topspace=10mm,
>      header=0mm,
>      top=0mm,
>      footer=0mm,
>      bottom=0mm]
> \setuppagenumber[state=none]
> \setuppagenumber[state=stop]
> \definelayout[WithoutMarginnotes][
>      location={duplex},
>      grid=no,
>      topspace=1cm,
>      height=19cm,
>      backspace=1cm,
>      cutspace=0cm,
>      leftmargin=0cm,
>      leftmargindistance=0.4cm,
>      width=fit,
>      rightmargindistance=0cm,
>      rightmargin=0cm]
>   \setuplayout[WithoutMarginnotes]
>
> \setuphead[section][
>      align=normal,
>      style=\tfa\ss,
>      before={\blank},
>      after={\blank[2pt]}]
>
> \starttext
>
> \startcolumns
>    \dorecurse{20}{\input knuth }
> \stopcolumns
>
> \stoptext
>
>
>>
>>
>>
>>
>>
>> When using balance=no
>> the page is properly typeset
>>
>> \setupcolumns[
>>      n=5,
>>      distance=4mm,
>>      balance=no,
>>      tolerance=tolerant]
>>
>>
>>
>>
>> When using balance=yes
>> It looks as if the page orientation became portrait mode, as the text disappears at the bottom of
>> the page.
>>
>>
>>
>> \setupcolumns[
>>      n=5,
>>      distance=4mm,
>>      balance=yes,
>>      tolerance=tolerant]
>>
>>
>>
>>
>>
>>
>>
>> Some hints as how to proceed?
>> Thanks
>> .Floris van Manen
>>
>>
>>
>>
>>
Henri’s example fails for me in the same way that Floris describes. 
However, when I remove either or both of the following lines from the 
first \setuplayout directive, all is well.

    header=0mm,
    footer=0mm,

In this example, the complete unnamed layout can simply be removed.

It is not clear why Floris has two layouts defined and active. One is 
stepping on the other. I do not know if the results of applying multiple 
layouts should be additive like this, or not, but I would think that 
they should not be.

-- 
Rik

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