Jiri Zurek wrote:
What is wrong with my syntax, please?
ly:bar-line::calc-bar-size needs a parameter.
If you get used to writing things like
\override Staff.BarLine #'bar-size = #ly:bar-line::calc-bar-size
you think that is all you ever need to say.
But the functions for grob properties like #'bar-size all need to be
told which grob to work with; this is done here implicitly.
To use this function anywhere else you have to say
(ly:bar-line::calc-bar-size grob)
i.e. you have to explicitly give it a grob as a parameter.
The function you are making should in turn
be written to expect a grob as a parameter
and it is this info that you can relay to the default function.
\override Staff.BarLine #'bar-size =
#(lambda (grob) (* (ly:bar-line::calc-bar-size grob) 0.5))
Cheers,
Robin
_______________________________________________
lilypond-user mailing list
lilypond-user@gnu.org
http://lists.gnu.org/mailman/listinfo/lilypond-user
