> Le 7 juin 2020 à 23:19, Aditya Mahajan <adit...@umich.edu> a écrit :
>
> On Sun, 7 Jun 2020, Fabrice L wrote:
>
>> Dear List,
>>
>> I would like to insert a page using (ideally) start/stop instructions. The
>> problem is that this page should be inserted only in a certain mode.
>> Consulting the mailing list, I thought the following code was working, but
>> it’s not ! The code is executed in the mode as expected, but the following
>> instructions ("Some other text... » in the exemple) is not typeset.
>>
>> Here is a minimal (not working!) example:
>>
>> % ————————————————————————————————————
>> \unexpanded\def\StartQuestionsList{
>> \startmode[ClassRoom] \page[yes] Here are some questions: \blank
>> }
>> \unexpanded\def\StopQuestionsList{
>> \page[yes] \stopmode
>> }
>> \definestartstop[Questions][
>> before=\StartQuestionsList,
>> after=\StopQuestionsList
>> ]
>>
>>
>> \startQuestions
>> Question A….
>> Question B….
>> \stopQuestions
>>
>> Some other text...
>> % ————————————————————————————————————
>>
>>
>> So to be clear, I would like the result in the « ClassRoom » mode to be:
>> % ————————————————————————————————————
>> Here are some questions:
>>
>> Question A….
>> Question B….
>>
>> Some other text...
>> % ————————————————————————————————————
>>
>> Otherwise to be:
>> % ————————————————————————————————————
>> Some other text...
>> % ————————————————————————————————————
>
> If you only set `ClassRoom` mode at compile time (rather than setting and
> unsetting it the middle of the document), then you can do:
>
> \definebuffer[Questions]
>
> \startmode[ClassRoom]
> \define\StopQuestionsList {...}
>
> \definestartstop[Questions][...]
> \stopmode
>
Thanks to Aditya, I have succeeded, but it was not trivial for me. So, in case
somebody someday would need a detailed solution, here is a minimal example, and
an explanation.
A buffer « Questions » is defined. If in « ClassRoom » mode, a start/stop «
Questions » is also defined. So when ConTeXt encounters the \startQuestions /
\stopQuestions, if the « ClassRoom » mode is enabled, the buffer is processed
(with some format if needed - framed here for the example), and if the mode «
ClassRoom » is disabled, then nothing is process. You can add as many
\startQuestions / \stopQuestions you wish.
% ----------------------------------------------
\definebuffer[Questions]
\enablemode[ClassRoom] % Try "On / Off » to process "\startQuestions /
\stopQuestions » or not.
\startmode[ClassRoom]
\definestartstop[Questions][before={\startframedtext\red},after={\stopframedtext\blue}]
\stopmode
\starttext
Before...
\startQuestions
The content of the buffer !
\stopQuestions
After...
\stoptext
% ----------------------------------------------
Thanks Aditya !
Fabrice.
> Aditya___________________________________________________________________________________
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