Defining own articulations

[Sven Axelsson]

Lilypond 2.7.8 Windows (but same result with 2.6)

I am trying to define articulations for 18 century french music. I am doing
this as in script.scm and script-init.ly:

#(set! default-script-alist
       (append 
         '(("portdevoix" .
           ((script-stencil . (feta . ("dmarcato" . "dmarcato")))
           (direction  . 1) ))
          ("coulement" .
           ((script-stencil . (feta . ("umarcato" . "umarcato")))
           (direction  . 1) )) 
          ("tremblement" .
           ((script-stencil . (feta . ("stopped" . "stopped")))
           (direction  . 1) )) 
          ("battement" .
           ((script-stencil . (feta . ("prall" . "prall")))
           (direction  . 1) )) 
          ("accent" .
           ((script-stencil . (feta . ("staccatissimo" . "staccatissimo")))
           (direction  . 1) )) 
          )
        default-script-alist) )

tremblement = #(make-articulation "tremblement")
battement = #(make-articulation "battement")
portdevoix = #(make-articulation "portdevoix")
coulement = #(make-articulation "coulement")
accent = #(make-articulation "accent")

But it doesn't work, the verbose log gives me
warning: don't know how to interpret articulation:
warning: scheme encoding: "tremblement"
and so on. So obviously the default-script-alist isn't updated.

-- 
Sven Axelsson