Scheme Markups in TextSpanner's #'edge-text

[David F. Place]

Hello:

Thanks very much for your help on my last topic.

I have a situation where I would like to have a \markup as the end text 
of a TextSpanner.   I see that I can do it by using the scheme syntax 
for the markup as described in section 8.1.2.   The markup I want is 
correctly engraved using the following normal markup syntax.  I am using 
version 2.10.25.

\markup  {\line {\bold {sehr langsam} \tiny \note #"4" #1 = ca 42}}

When I try to translate it to scheme in an obvious way, the engraver 
just leaves out the note altogether.

\override TextSpanner #'edge-text = #(cons "rit." (markup #:line (#:bold 
"sehr langsam" #:tiny #:note "4" 1 " = ca 42")))

I can't find anywhere in the documentation where the process of 
transcribing \markup into scheme markup is detailed.

I'll be grateful for your help.

Cheers,
David