Node:Context evaluation, Next:Defining contexts, Previous:Context properties, Up:Interpretation context
Contexts can be modified during interpretation with Scheme code. The syntax for this is
\applycontext function
function should be a Scheme function taking a single argument, being the context to apply it to. The following code will print the current bar number on the standard output during the compile:
\applycontext #(lambda (x) (format #t "\nWe were called in barnumber ~a.\n" (ly:get-context-property x 'currentBarNumber)))
This page is for LilyPond-2.0.0 (stable-branch).