> > - label(textext("\letterbackslash\letterampersand"),origin);
> > - label(textext("\letterbackslash\&"),origin);
> >
> > This is because the commands are interpreted with TeX before they
> > are written to mpgraph.mp. The \letterampersand or \& generates the
> > character & alone: you need to preceed it with backslash, so that
> > metapost finally knows what to do.
>
> So, should all the \letter... commands (basically anything generated
> from char-def.lua) be unexpandable?
What are the disadvantages of unexpandable commands? I'm not an expert.
Why is this not done by default if it works better?
> You can also try \noexpand\letterampersand
Produces compile error.
Marco
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