Re: help scheme TAB strings music-function

[Robby R]

Hello,

I've simplified my original code a little, changed (list?) to (markup-list?) and
can maybe ask some slightly more intelligent questions.  My goal is a function
to print string names next to TAB and eventually set a string tuning, something
along the lines of :

         \setStrTuningCLEF #'("Banjo" ( D B G D g ))
         or
         \setStrTuningCLEF #'("Fiddle" ( D A D D ))

except I probably have the method of entering 'args' all wrong.  Here's the code
(questions follow):


\version "2.14.1" 

setStrTuningCLEF = #(define-music-function (parser location tuning)
        (markup-list?)
        #{
                \set Staff.instrumentName = #( markup make-center-column-markup 
$tuning ) ) 
        #}
)

\score { % WORKS
        \new TabVoice { 
                
                \set Staff.instrumentName = \markup { \center-column { 1 2 3 4 
5 } } % **** 
                
                { g }
        } 
} 
\score { % DOES NOT WORK
        \new TabVoice { 
                
                \setStrTuningCLEF #'( D B G D g )   % ******** 

                { g }
        } 
} 

\layout {
        \context {
                \TabStaff
                        tablatureFormat = #fret-number-tablature-format-banjo
                        stringTunings = #banjo-open-g-tuning
        }
}
% %%%%  END  %%%%

The above gets the following compile error:

  ly:40:24: wrong type for argument 1.  Expecting markup list, found (D B G D g)
           \setStrTuningCLEF #'( D B G D g ) 

My questions are:

1) Is this the proper way to get an arg into the markup inside
define-music-function:

    \set Staff.instrumentName = #( markup make-center-column-markup $tuning ) )

   Seems like the "Known issues and warnings" at the bottom of
http://lilypond.org/doc/v2.14/Documentation/extending/markup-construction-in-scheme
would apply.

2) Is (markup-list?) the appropriate predicate?

3) Would this be the proper call of the function:

     \setStrTuningCLEF #'( D B G D g )

4) Am I even on the right track here?

Thank you so much, Robby