On Dec 19, 2011, at 11:14 PM, David Nalesnik wrote:
> Hi all,
>
> Working with overrides of nested properties, I run into an interesting
> problem.
>
> Both overrides of 'color produce the same result, but the override of
> 'bound-details set to the lambda expression does nothing. I've noticed this
> with other attempted overrides of nested properties such as 'bound-details
> 'left 'padding.
>
> (My example is pretty silly, but it's as simple as I can make it.)
>
> \version "2.15.16"
>
> \relative c'' {
> \override TextSpanner #'bound-details #'left #'text = #(lambda (grob) "hi")
> % doesn't work
> %\override TextSpanner #'bound-details #'left #'text = #"hi"
> %\override TextSpanner #'color = #red
> \override TextSpanner #'color = #(lambda (grob) red) %works
> c\startTextSpan d e f\stopTextSpan
> }
>
>
> Is there a detail of syntax I'm getting wrong here, or is this a limitation
> of \override?
>
Hey David,
It's a limitation of override. You'd have to override bound-details with a
function and then build the entire a-list. Unfortunately, nested-properties do
not evaluate functions for overrides.
Cheers,
MS
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