[NTG-context] Colored text's background, which the more "lcd-mkiv"?

Aditya Mahajan adityam at umich.edu
Fri Jan 17 18:16:02 CET 2014

On Fri, 17 Jan 2014, Elspeth McGullicuddy wrote:

> [Colored text's background, which the more "lcd-mkiv"?;
> plus: Metapost variable "text" with "\definetextbackground";
> plus: {\input ward}]
> Hi list,
> What would be the best, also the more up to date, way to put colored
> background behind text, that could cross page boundaries.
> I have found three ways of doing this: I would like to know which is
> best practice, and also the more "lua context document" fashion.
> 1- Using "\startbar[underbar] \input zapf \stopbar" as described p. 39
> of "hybrid.pdf".

Use this one, unless the underbars are indequate, as was the case for the 
OP of the TeX.SX question.

> 2- Using "\startMPpositionmethod{mpos:placeholder}", found in
> http://tex.stackexchange.com/questions/125162/rounded-box-around-placeholder-text-that-supports-line-breaking/125323
> (Thanks to Aditya).
> A bit tricky, but perhaps the more versatile or universal?
> 3- Start with: "\definetextbackground" (same ref. as previous).
> %%%%%%%%%%%%%
> % About the third one I have had some difficulties, that might be
> thought of as a bug.
> % You might want and try the following example: it doesn't work if you
> have a MetaPost variable
> % whose name is "text".

(Untested). Normally this means that there is already a variable with the 
name text. You can use:

save text; numeric text;


newnumeric text;

which is shortcut for the former.


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