Creating cloze texts

* Creating cloze texts
@ 2016-09-02 13:27 Florian Leupold
  2016-09-04 10:03 ` Hans Hagen
  0 siblings, 1 reply; 5+ messages in thread
From: Florian Leupold @ 2016-09-02 13:27 UTC (permalink / raw)
  To: ntg-context

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Dear list,

I would like to create cloze texts for my students with ConTeXt.

Ideally, I would have a command \cloze[<width>]{<solution>} with the following functionality:

1) \cloze{<solution>} would insert an underlined gap in the text with a width of (say) 1.3 times the width of solution and puts the solution on top of it with centered alignment. I will then color the text read if the mode is ‘teacher’ and in white if not.
2) \cloze[<width>]{<solution>} would do the same, but with a fixed width of the underline. The solution should then be flush left, maybe with a horizontal space of \quad.
3) The underline should allow for line breaks and hyphenation, but not such that only empty space is broken into the next line of left in the previous (see MNWE).

In this way, the student’s and teacher’s versions of the script will look exactly the same, except for the visible solution in the teacher’s version.

The macro \underbar does a good job in terms of line breaks and hyphenation. But it is "too smart" in the sense that it does not underline horizontal spaces. The MNWE below showcases problems with my naive attempts to achieve underlining:
- CLOZE 1 does not have any extra space.
- CLOZE 2 does not underline the horizontal spaces.
- CLOZE 3 does not show the underline, supposedly because the first text elements in it are white.
- CLOZE 4 shows that introducing fake characters is not a good idea anyways because the cloze is broken without any “real” solution in the first line.
- CLOZE 5 shows the same for trailing space.

MNWE:
\starttext
\input ward
\underbar{\color[red]{CLOZE 1}}
\input ward
\underbar{\quad\color[red]{CLOZE 2}\quad}
\input ward
\underbar{\color[white]{x}\quad\color[red]{CLOZE 3}\quad\color[white]{x}}
\input ward
\underbar{\color[green]{x}\quad\color[red]{CLOZE 4}\quad\color[white]{x}}
\input ward
space \underbar{\color[red]{CLOZE 5}\qquad\color[white]{x}} space
\input ward
\stoptext

I would greatly appreciate help with this problem.

Thanks so much in advance!
Florian

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