Updates:
Summary: Documentation: accessing the grob stencil for a cross-staff
glissando
Comment #3 on issue 3669 by [email protected]: Documentation: accessing
the grob stencil for a cross-staff glissando
http://code.google.com/p/lilypond/issues/detail?id=3669
The original bug-reporter is happily and successfully accessing the
stencil; he just needed to know that he could call the usual stencil
function in his own override of the 'stencil property.
Maybe it would help to add to section Extending:2.7, after
"The procedure always takes a single argument, being the grob."
That procedure may access the usual value of the property, by first calling
the
function that is the usual callback for that property, which can by found
in the
Internals Reference or the file 'define-grobs.scm':
@example
\relative c'' {
\override Flag #'X-offset = #(lambda (flag)
(let ((default (ly:flag::calc-x-offset flag)))
(* default 4.0)))
c4. d8 a4. g8 }
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