[NTG-context] Extract only certain part of document (via modes)?

Mikael P. Sundqvist mickep at gmail.com
Sun Nov 6 20:13:14 CET 2016


On Sun, Nov 6, 2016 at 3:03 PM, Wolfgang Schuster
<schuster.wolfgang at gmail.com> wrote:
> Mikael P. Sundqvist
> 6. November 2016 um 12:51
> Dear list, and in particular Hans,
>
> I asked the same question on stackexchange before today
> (http://tex.stackexchange.com/q/337738/52406), and got the answer that
> what I want to do might not be possible.
>
> In my large document I have exercises (typeset with \startexercise
> \stopexercise, defined as an enumeration). Is it possible to use modes
> (or any other trick) to be able to compile the same file and get only
> the exercises. For example,
>
> context file.tex
>
> should give the full document, while
>
> context --mode=exercises file.tex
>
> should give only all the exercises (or just everything "in one mode")?
>
> You can put each exercise in a block and ask Hans to add a \saveblocks
> commands
> which writes the content of all exercise blocks to a external file (like
> \savebuffer lets
> you save the content of a buffer in a external file).
>
>
> \defineblock[exercise]
> \keepblocks [exercise]
>
> \defineenumeration[exercise][text=Exercise]
>
> %\doifmode{exercises}{\saveblocks[exercise][exercises.tex]}
>
> \starttext
>
> \beginexercise
>     \startexercise
>         This is the first exercise.
>     \stopexercise
> \endexercise
>
> \beginexercise
>     \startexercise
>         This is the second exercise.
>     \stopexercise
> \endexercise
>
> \stoptext
>
>
> The content of this saved file can then be read by another file
> to get a document which contains only the exercises.
>
>
> \defineenumeration[exercise][text=Exercise]
>
> \starttext
>
> \doiffileelse{exercise}
>   {\input{exercises}}
>   {{\tttf Exercise file doesn’t exist.}}
>
> \stoptext
>
>
> Wolfgang
>
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Thank you for the answer, I think that would be nice to have. Hans, do
you mind adding such a feature? Or do you have any other idea on the
problem as is?

/Mikael


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