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grabbox: utilities to get an argument as a box
Copyright (C) 2018-2019 by Jonathan P. Spratte
This package may be distributed and/or modified under the conditions of the
LaTeX Project Public License (LPPL), either version 1.3c of this license or (at
your option) any later version. The latest version of this license is in the
file
https://www.latex-project.org/lppl.txt
The package provides
- `\grabbox<*>[<prepre>]{<register>}[<pre>]{<mode>}[<post>]{<next>}`: grab the
next argument as a box in `<mode>` (`\hbox`, `\vbox` or `\vtop`) and save it
in box `<register>`. After the box is saved execute `<next>`. Inside of the
box one can inject `<prepre>` and `<pre>` before the contents and `<post>`
after them. If the star is not given spaces are stripped from the start and
the end of the box.
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