Re: Odd interaction between ly:grob-property and hairpin

[Simon Albrecht]

Hello Jean,

thanks for the information. I can’t respond to each point right now, too 
tired. But…

On 10/02/2022 19:40, Jean Abou Samra wrote:
> What are you trying to achieve in the first place? 

I’m in another iteration of writing a macro for adjusting placement of 
dynamics (Hairpin, DynamicText and DynamicTextSpanner). It needs to 
allow intersection with staff lines, interact well with 
DynamicLineSpanner and have a concise, reliable, clear user interface 
suitable for frequent use. (What I’m after and have been using in most 
iterations is something like @code{ c1\off #'(-1 . 2) \f }). I have 
switched to using grob callbacks since I didn’t see another way of 
reacting to grob type, direction and previous offsets adequately. I need 
to set multiple grob properties (of more than one grob) and since saving 
large amounts of vertical space is the whole point, it obviously needs 
to be before-line-breaking.

However, I’m slowly realising that I don’t know well enough what exactly 
the functionality is supposed to be and how much of that is even feasible.

I’m hoping to get back to you tomorrow.

Best, Simon