Urs Liska <u...@openlilylib.org> writes:
> David Kastrup <d...@gnu.org> schrieb:
>>Colin Tennyson <colintenny...@outlook.com> writes:
>>
>>> The LillyPond parser accepts this, there is no error, and the score
>>_is
>>> rendered correctly_.
>>> But as you point out:
>>> this:
>>> << \addKey \staffOneNotes >>
>>> is better written as:
>>> { \addKey \staffOneNotes }
>>>
>>>
>>> While the { ... } notation is better, LilyPond accepts both: {
>>\addKey
>>> \staffTwoNotes } and << \addKey \staffTwoNotes >>. In this case both
>>are
>>> rendered the same.
>>
>>But that's not a given. Take, for example, the output of
>>
>>
>>------------------------------------------------------------------------
>>
>>
>>Also, if you have something like
>>
>>\new StaffGroup
>>{
>> << \key c\major { c' c' c' c' } >>
>>}
>>
>>you'll likely be surprised by the results...
>
> Colin, your example works because you have exactly one music
> expression inside the angled brackets.
\addKey \staffOneNotes are _two_ music expressions. I used exactly the
same template for demonstrating things that don't work.
> These let you enter multiple expressions that are interpreted in
> parallel. And if there is just one expression inside it just does
> nothing.
But that's not what we had here.
--
David Kastrup
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