Le 7 juin 2020 =C3=A0 23:19, Aditya Mahajan <adityam@umich.edu> a = =C3=A9crit :

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=E2=80=99s not ! The code is executed in the mode as = expected, but the following instructions ("Some other text... =C2=BB in = the exemple) is not typeset.

Here is a = minimal (not working!) example:

% = =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80= =94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94= =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94
\unexpanded\def\StartQuestionsList{
= \startmode[ClassRoom] \page[yes] Here are some questions: = \blank
}
\unexpanded\def\StopQuestionsList{ = \page[yes] \stopmode
}
\definestartstop[Questions][
= before=3D\StartQuestionsList,
= after=3D\StopQuestionsList
]

\startQuestions
= Question A=E2=80=A6.
Question B=E2=80=A6.
\stopQuestions

Some other = text...
% = =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80= =94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94= =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94

So = to be clear, I would like the result in the =C2=AB ClassRoom =C2=BB mode = to be:
% = =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80= =94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94= =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94
Here are some questions:

Question A=E2=80=A6.
= Question B=E2=80=A6.

Some other = text...
% = =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80= =94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94= =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94

Otherwise to = be:
% = =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80= =94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94= =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94
Some other text...
% = =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80= =94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94= =E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2=80=94=E2= =80=94=E2=80=94=E2=80=94

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 =C2=AB Questions =C2=BB is defined. If in = =C2=AB ClassRoom =C2=BB mode, a start/stop = =C2=AB Questions =C2=BB is also defined. So when ConTeXt = encounters the \startQuestions / \stopQuestions, if the = =C2=AB ClassRoom =C2=BB mode is enabled, the buffer is = processed (with some format if needed - framed here for the example), = and if the mode =C2=AB ClassRoom =C2=BB is disabled, then = nothing is process. You can add as many \startQuestions / \stopQuestions = you wish.

% = ----------------------------------------------

\definebuffer[Que= stions]

\enablemode[ClassRoom] % Try = "On / Off =C2=BB to process "\startQuestions / = \stopQuestions =C2=BB or not.

\startmode[ClassRoom]

\definestartst= op[Questions][before=3D{\startframedtext\red},after=3D{\stopframedtext\blu= e}]

\stopmode

\starttext

Before...

\startQuestions

The = content of the buffer !

\stopQuestions

After...

\stoptext

% = ----------------------------------------------

Thanks Aditya !

Fabrice.

Aditya_________________________________________________________= __________________________
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