Unfortunately this (just like acciaccatura) only works on one note instead grouped notes. Basically i simply need the beam to be stroked. Now i'm using the following workaround, but the output is not really satisfactory and i constantly need to adjust the Y-axis.
\version "2.16.1"
stroke = {
\once\override Stem #'stencil =
#(lambda (grob)
(let* ((x-parent (ly:grob-parent grob X))
(is-rest? (ly:grob? (ly:grob-object x-parent 'rest))))
(if is-rest?
empty-stencil
(ly:stencil-combine-at-edge
(ly:stem::print grob)
Y
(- (ly:grob-property grob 'direction))
(grob-interpret-markup grob
(markup #:center-align #:fontsize 2
#:musicglyph "flags.ugrace"))
-5.2))))
}
\relative c' {
% \once\override Flag #'stroke-style = #"grace"
% \teeny d8 \normalsize c4. c2
\teeny\stroke c32[d e f g a b c~] \normalsize c2.
}
It also seems like a lot of work for something quite simple. Any suggestion would be really helpful and greatly appreciated.