[metapost] Can I use interactive mode in Lua?

[Rui Zhang]

>hm,
>have you seen mplibapi.pdf at
>https://www.tug.org/svn/texlive/tags/texlive-2017.1/Master/texmf-dist/doc/metapost/base

I didn't look into svn, but I did look at https://www.tug.org/docs/metapost/mplibapi.pdf
There is a statement in section 7.4:

> For instance, you cannot split a single statement over multiple chunks.

That's why I believed a statement broken into several lines won't work in Hans' solution.