Re: Box around system

[David Kastrup]

Jean Abou Samra <jean@abou-samra.fr> writes:

> Le 19/05/2022 à 00:56, David Kastrup a écrit :
>> Jean Abou Samra <jean@abou-samra.fr> writes:
>>
>>> Le 18/05/2022 à 23:58, Jean Abou Samra a écrit :
>>>>   (say)
>>>> \overrideMidBrokenSpanner Context.Grob.property = ...
>>>
>>> Actually, the ideal interface for this is probably a modifier
>>> like \once, \temporary and \single.
>>>
>>>    \broken \override Context.Grob.property = ...
>> I am not sure: it seems more natural that breaking any spanner into
>> pieces leaves you with the properties valid at the start of the broken
>> piece, without needing extra instructions.
>>
>> But for doing the equivalent with tweaks, it would be rather tricky to
>> make _that_ information column-dependent as well in some manner.  So
>> it's not clear that this leads to something wonderful.
>
>
>
> Allow me to doubt: should the behavior of this piece of code
> really change?
>
> \version "2.22.2"
>
> <<
>   \new Staff { c'1\< \break 2 2\! }
>   \new Staff { c'1\< \break 2 2\! }
>   \new Staff {
>     R1
>     \override Score.Hairpin.color = red
>     g2\< 2\!
>   }
>   \new Staff {
>     R1
>     g2\< 2\!
>   }
>>>
>
>
> Assuming that it is desirable to make the two upper
> hairpins red in this case, it sounds like a serious
> compatibility issue.

Well, compatibility would definitely end up being a problem.  So you may
be right about the \broken qualification being necessary.  Which would
severely reduce the performance impact when the feature is not being
used.

-- 
David Kastrup