Re: Debugging shapeII

[David Kastrup]

David Kastrup <address@hidden> writes:

> Simon Albrecht <address@hidden> writes:
>
>> Hello,
>>
>> I’m sorry I have to come again with a question concerning shapeII, and
>> with a not very tiny example.
>> Please have a look at the attachment:
>> – The slur _before_ the revert (be it through \revert or synonymously
>> through \tweak) is oddly displaced.
>> – Using \shapeII (I think only the override-like form is affected)
>> thoroughly confuses staff-staff-spacing, shifting the lower staff into
>> the system below.
>>
>> I don’t quite know where to search…
>
> I suspect the same problem that has been plaguing \offset until
>
> commit 610d3aa70a430b620b7175fbe264a9f21eba4482
> Author: David Kastrup <address@hidden>
> Date:   Wed Jul 22 13:58:18 2015 +0200
>
>     Issue 4516: Make \offset handle unpure/pure containers
>
> I suspect that the \shape command in LilyPond as well as \shapeII
> outside of LilyPond would require use of the technique employed in that
> commit.

Maybe one should refactor that code so that all of the trickery is
encapsuled into one generic function, and the particular manipulation to
do is passed as one argument to that function.  That way, one could
reuse all of the trickery for other manipulations.

-- 
David Kastrup