How to use ^\markup in a scheme function?

[Frédéric Chiasson]

Hi,

I tried to program a function to put a slash at a given offset on a note, but the line with the ^\markup doesn't work.

Here is the code :

Slash = #(define-music-function (parser location xy note) 
            (pair? ly:music?)
            #{ 
                \once \override TextScript #'extra-offset = #$xy
                $note ^\markup{\musicglyph #"flags.ugrace"}
            #})


\version "
2.11.1"

\relative {
 \Slash #'(1.1 . -3.2) c4
}


Here are the errors :

<string>:3:45: ERREUR : syntax error, unexpected '^'
                \lilyvartmpd 
                                             ^\markup{\musicglyph #"
flags.ugrace"}
<string>:3:54: ERREUR : cha^ine d''echappement inconnue (Unknown escape string): << \musicglyph >>
                \lilyvartmpd ^\markup{
                                                      \musicglyph #"
flags.ugrace"}

Thanks, 

Frédéric