Re: macro for \once\override

[David Kastrup]

Werner LEMBERG <wl@gnu.org> writes:

>>> BTW, would it be possible to enhance `\propertyTweak` to write
>>>
>>>   \propertyTweak fret-diagram-details.dot-color #'white
>>>                  FretBoard
>>>
>>> as
>>>
>>>   \propertyTweak dot-color #'white
>>>                  FretBoard.fret-diagram-details       ?
>> 
>> Have you even tried?
>
> Only the stacking case:
>
>   \once \propertyTweak barre-type #'straight
>         \propertyTweak dot-color #'black
>         \propertyTweak finger-code #'below-string
>                        FretBoard.fret-diagram-details
>
>   => error: bad grob property path (dot-color)
>
> Sorry for the simplification.
>       
>> With the obvious consequence that it makes no difference for
>> stacking _multiple_ \propertyTweak commands, so it doesn't help a
>> lot in your case.
>
> I don't understand this remark.  Please elaborate.

\propertyTweak finger-code #'below-string
  FretBoard.fret-diagram-details

is completely indistinguishable from

\propertyTweak fret-diagram-details.finger-code #'below-string
  FretBoard

So any commands stacked before this last \propertyTweak command have no
way of knowing that they are supposed to assume fret-diagram-details as
a given.

>> And actually using this syntax for the final \propertyTweak is
>> likely going to be a lot more confusing than just staying like you
>> are.
>
> I agree.  It was a bad example, and the one above should better
> demonstrate what I'm looking for.

No idea what you mean.

-- 
David Kastrup