Werner LEMBERG <w...@gnu.org> writes:
>> The correct syntax is
>>
>> \begin{lilypond}[line-width=394\pt]
>
> Actually,
>
> ```
> \begin[line-width=394\pt]{lilypond}
> ```
>
> is also correct.
Nope. It is backward compatibility but should not be used anywhere.
git grep '\\begin\['
unfortunately shows that this isn't consistently done yet. The problem
with the old form is that it is not the optional LaTeX option syntax and
could not possibly be implemented in a LaTeX-internal verbatim-like
environment.
--
David Kastrup
