Re: tie over clef change

[Hans Åberg]

> On 26 Sep 2020, at 19:36, Dan Eble <dan@faithful.be> wrote:
> 
> On Sep 26, 2020, at 13:11, Hans Åberg <haberg-1@telia.com> wrote:
>> 
>>> 
>>> On 26 Sep 2020, at 18:50, Dan Eble <dan@faithful.be> wrote:
>>> 
>>> On Sep 26, 2020, at 12:34, Hans Åberg <haberg-1@telia.com> wrote:
>>>> 
>>>>> On 26 Sep 2020, at 18:04, Dan Eble <dan@faithful.be> wrote:
>>>>> 
>>>>>> On Sep 26, 2020, at 09:41, Dan Eble <dan@faithful.be> wrote:
>>>>>> 
>>>>>> What kind of grob would an editor expect here? a Tie because it connects 
>>>>>> notes of the same pitch, or a Slur because it connects notes at 
>>>>>> different staff positions? (or something else?)
> ...
>> 
>> I think the question is answered from the musical point of view: Werner's 
>> example is a tie since it is the same pitch, the same note with longer 
>> value. In your example, the pitches are formally different, and the 
>> difference is a comma in the Pythagorean tone system, so it must be a slur.
> 
> This sounds like an answer to a question I didn't ask.  I don't doubt that 
> the arc in Werner's example is semantically a tie.  What I am wondering is 
> what kind of LilyPond grob should represent the arc, and I'm thinking that it 
> should be a Slur because of its shape, not a Tie because of its purpose.

I think that slurs and ties may be rendered equally because of the legacy of 
drawing them by hand. But suppose they are different, then it should also have 
a tie look.