LilyPond syntax element like Scheme ‘)’? (was: Re: Selected pieces in a book)

[Simon Albrecht]

The definition of \stringAppend is definitely awkward. After all, the 
only difference between \stringAppend and \string-append is that the 
former has a specified number of arguments, and the latter doesn’t work 
since in LilyPond syntax there is no delimiter like ‘)’ in Scheme. I 
wonder if we might introduce such a syntax element. But I can’t even 
think of a reasonable one: \end is not distinctive enough IMO.  \out ?  \. ?
It would allow writing:
%%%%%%%%%
\markup \string-append "foo" "bar" \.
%%%%%%%%%

Yours, Simon