Re: a way to implement \testcolumn in mixedcolumns

[Hans Hagen <pragma@wxs.nl>]

On 12/3/2013 3:10 PM, Lars Huttar wrote:
> On 11/28/2013 1:34 PM, Hans Hagen wrote:
>>
>> That macro was never meant for mixed columns. I made a variant that
>> works ok in mixed columns which will be in the next beta.
>>
>> \setuptolerance[verytolerant]
>>
>> \starttext
>>
>> \startmixedcolumns
>>
>>      \dorecurse{4}{\input ward \par}
>>
>>      \testcolumn[10][-1pt] % 10 lines - 1pt slack
>>
>>      \dorecurse{2}{\input ward \par}
>>
>> \stopmixedcolumns
>>
>> \stoptext
>
> Ok. It looks like the second parameter to \testcolumn is now required
> (it didn't used to be).

i'll fix that

> What does this slack value do? Does it mean that the minimum amount of
> space left in the column is 10 lines minus 1pt?

indeed

> Also, in the Dec. 2 beta (current version: 2013.12.02 15:22),  the
> \column command now causes an error when we come to the \stopmixedcolumns.
> I don't know if it's connected with the above change, or something else.

no, more to making section breaks working better in columns (i forgot to 
rename a variable)

> MWE: change the \testcolumn command above to \column.
> I get the following error output:
>
> ! LuaTeX error
> C:/context/tex/texmf-context/tex/context/base/page-mix.lua:474
> : attempt to compare number with nil
> stack traceback:
>
> C:/context/tex/texmf-context/tex/context/base/page-mix.lua
> :474: in function 'process_penalty'
>
> C:/context/tex/texmf-context/tex/context/base/page-mix.lua
> :572: in function 'setsplit'
>
> C:/context/tex/texmf-context/tex/context/base/page-mix.lua
> :687: in function 'setsplit'
>
> C:/context/tex/texmf-context/tex/context/base/page-mix.lua
> :819: in function 'mixsetsplit'
>      [string "\directlua "]:1: in main chunk.
>
> system          > tex > error on line 14 in file
> C:/Users/Huttar/Documents/work/tex/test-beta-testcolumn.tex:
> LuaTeX error  ...
>
>   4
>   5     \startmixedcolumns
>   6
>   7         \dorecurse{4}{\input ward \par}
>   8
>   9         %\testcolumn[10][-1pt] % 10 lines - 1pt slack
> 10         \column
> 11
> 12         \dorecurse{2}{\input ward \par}
> 13
> 14 >>  \stopmixedcolumns
> 15
> 16     \stoptext
> 17
>
>
> \ctxcommand #1 -\directlua {commands.#1}
>
> \page_mix_routine_construct ...\else false\fi , }}
>                                                    \deadcycles
> \zerocount
> \page_mix_routine_continue ...ine_construct \v!no
>
> \page_mix_routine_package ...
> \page_otr_command_routine ...mix_routine_continue
>                                                    \or
> \page_mix_routine_bala...
> \page_otr_triggered_output_routine ...and_routine
>                                                    \fi
> <output> ...eforeoutput \page_otr_triggered_output_routine
>                                                    \relax \the
> \everyafterout...
> ....
> l.14 \stopmixedcolumns
>
> ? X
>
>
> Thanks again for your work on this.
> We're continually reevaluating whether we can use the beta or need to
> stick with the stable version. At the moment, it looks like we'll be
> sticking with the stable version. But we'd like to use the beta, if the
> problems can be ironed out.

fyi: i'll not patch the stable version

new beta

> Lars
>
> ___________________________________________________________________________________
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>
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> ___________________________________________________________________________________
>


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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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