Re: Can modes be used for content control?

[Hans Hagen via ntg-context <ntg-context@ntg.nl>]

On 11/17/2021 6:56 PM, Aditya Mahajan via ntg-context wrote:
> On Tue, 16 Nov 2021, Idris Samawi Hamid ادريس سماوي حامد wrote:
> 
>> Hi Aditya,
>>
>> Many thanks; see below:
>>
>> On Tue, 16 Nov 2021 17:23:59 -0700, Aditya Mahajan via ntg-context
>> <ntg-context@ntg.nl> wrote:
>>
>>> On Tue, 16 Nov 2021, Idris Samawi Hamid ادريس سماوي حامد via ntg-context
>>> wrote:
>>>
>>>> Dear gang,
>>>>
>>>> For creating/authoring content in ConTeXt: Can modes or the like be used
>>>> for content control? For example, someone wants to write at least two
>>>> versions of a book managed from a single file. So, e.g., we may have
>>>>
>>>> a) abridged content
>>>> b) unabridged content - includes a)
>>>> c) abridged content + translation
>>>> d) unabridged content + translation
>>>> [:]
>>>>
>>>> One can author and organize this in XML - pre-ConteXt - but perhaps one
>>>> prefers to write in ConTeXt (take advantage of shortcuts etc.). So maybe
>>>>
>>>> \defineparagraphs[unabridged]
>>>> \defineparagraphs[abridged]
>>>> \defineparagraphs[translation]
>>>>
>>>> Then one authors the complete work in a single project, but you can
>>>> produce a variety of versions, depending on the mode chosen:
>>>>
>>>> \definemode[unabridged]
>>>> etc.
>>>>
>>>> Can one do this in context?
>>>
>>> Yes!
>>>
>>> This is what I do (for solutions in homework assignments):
>>>
>>> \definebuffer[solution][local=yes,nested=yes]
>>>
>>> \startmode[solution]
>>> \defineenumeration[solution][....fancy setup...]
>>> \stopmode
>>>
>>> Then, in the main tex file:
>>>
>>> ....
>>> \startsolution
>>> ...
>>> \stopsolution
>>> ....
>>>
>>> By default, gives the version without solution. Compile with --mode=solution
>>> to get the version with solution. The same thing should work in your case by
>>> defining two modes: unabridged and translation. And then use
>>> --mode=unabridged,translate etc to get multiple modes.
>>
>> Here's a working sample:
>>
>> =======
>> % \definebuffer[unabridged]
>> % \definebuffer[abridged]
>>
>> \setupwhitespace[big]
>>
>> \starttext
>> \startmode[unabridged]
>> \input knuth
>>
>> \startblockquote
>> \input ward
>> \stopblockquote
>>
>> % \startmode[abridged]
>> % \input knuth
>> % \stopmode
>> \stopmode
>>
>> \startmode[abridged]
>> \input knuth
>> \stopmode
>>
>> % \startmode[abridged]
>> % \input zapf
>> % \stopmode
>> \stoptext
>> =======
>>
>> Unfortunately - as pointed out on the wiki - modes cannot be nested.
> 
> But you don't have to directly use the modes. The following will work:
> 
> \definestartstop[abridged]
> 
> % By default, don't show the unabridged text
> \definebuffer[unabridged][local=yes, nested=yes]
> 
> \startmode[unabridged]
> % In the unabridged mode, show the abridged text
> \definestartstop[unabridged]
> \stopmode
> 
> \starttext
> \startabridged
> \input knuth
> 
> \startunabridged
> \startblockquote
> \input ward
> \stopblockquote
> \stopunabridged
> 
> \input zapf
> \stopabridged
> 
> Blocks are a better mechanism, but I still prefer modes here because I find the \beginblock ... \endblock syntax to be a bit awkward in a context document.
it also depends on usage ... you can have blocks and delay them or reuse 
them or call them up later etc .. so you can code answers with questions 
and then call them up in an appendix


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