Jan-Peter Voigt <address@hidden> writes:
as one can read in
http://www.lilypond.org/doc/v2.17/Documentation/extending/callback-functions.html
you can use callback-functions on /all/ grob-properties ...
so why doesn't this work?
\override TextScript #'font-size = #(lambda (grob) 30)
The settings of font-interface and text-interface become part of the
props alist list for markup interpretation. At the time a markup is
interpreted, no information about a possibly responsible grob is
available, so no callbacks can be executed.