Accordion symbols invisible.

[Mirosław]

Registers (by lilypond called 'accordion symbols') invisible with your commands 
in file 'accordion-defs-init.ly'.
There is a need to create new symbol accordion.accStdbase similar to 
accordion.accBayanbase, not circle but rectangle (current is correct of course).

Example file with all register signs and my init definitions:

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

\version "2.10.0"
\include "deutsch.ly"

%  2' = T
%  4' = F
%  8' = E
% 16' = S
% registers (* - frequently used)

accDiscantF = \markup { \combine \musicglyph #"accordion.accDiscant" \raise 
#2.55 \musicglyph #"accordion.accDot" } % *

accDiscantE = \markup { \combine \musicglyph #"accordion.accDiscant" \raise 
#1.55 \musicglyph #"accordion.accDot" } % *

accDiscantEh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" } % *

accDiscantEhh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" }

accDiscantS = \markup { \combine \musicglyph #"accordion.accDiscant" \raise 
#0.55 \musicglyph #"accordion.accDot" } % *

accDiscantFE = \markup { \combine \musicglyph #"accordion.accDiscant" \combine 
\raise #2.55 \musicglyph #"accordion.accDot" \raise #1.55 \musicglyph 
#"accordion.accDot" } % *

accDiscantFS = \markup { \combine \musicglyph #"accordion.accDiscant" \combine 
\raise #2.55 \musicglyph #"accordion.accDot" \raise #0.55 \musicglyph 
#"accordion.accDot" } % *

accDiscantFEh = \markup { \combine \musicglyph #"accordion.accDiscant" \combine 
\raise #2.55 \musicglyph #"accordion.accDot" \translate #(cons 0.9 
1.55) \musicglyph #"accordion.accDot" }

accDiscantFEhh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" }

accDiscantSE = \markup { \combine \musicglyph #"accordion.accDiscant" \combine 
\raise #0.55 \musicglyph #"accordion.accDot" \raise #1.55 \musicglyph 
#"accordion.accDot" } % *

accDiscantSEh = \markup { \combine \musicglyph #"accordion.accDiscant" \combine 
\raise #0.55 \musicglyph #"accordion.accDot" \translate #(cons 0.9 
1.55) \musicglyph #"accordion.accDot" }

accDiscantSEhh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #0.55 \musicglyph 
#"accordion.accDot" \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" }

accDiscantEEh = \markup { \combine \musicglyph #"accordion.accDiscant" \combine 
\raise #1.55 \musicglyph #"accordion.accDot" \translate #(cons 0.9 
1.55) \musicglyph #"accordion.accDot" } % *

accDiscantEEhh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" }

accDiscantEhEhh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" }

accDiscantFEEh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" } % *

accDiscantFEEhh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine 
\raise #1.55 \musicglyph #"accordion.accDot" \translate #(cons -0.9 
1.55) \musicglyph #"accordion.accDot" }

accDiscantFES = \markup { \combine \musicglyph #"accordion.accDiscant" \combine 
\raise #2.55 \musicglyph #"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" } % *

accDiscantFEhEhh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" }

accDiscantFEhS = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" }

accDiscantFEhhS = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" }

accDiscantEEhEhh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" } % *

accDiscantEEhS = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" } % *

accDiscantEEhhS = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" }

accDiscantEhEhhS = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \combine \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" }

accDiscantFEEhEhh = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" } % *

accDiscantFEEhS = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" } % *

accDiscantFEEhhS = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" }

accDiscantFEEhEhhS = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \combine \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" } % *

accDiscantTuttiChoirFive = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \combine \translate #(cons -0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" } % equals to 
accDiscantFEEhEhhS *

accDiscantTuttiChoirFour = \markup { \combine \musicglyph 
#"accordion.accDiscant" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \combine \translate #(cons 0.9 1.55) \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" } % equals to 
accDiscantFEEhS *

accFreebaseF = \markup { \combine \musicglyph #"accordion.accFreebase" \raise 
#1.55 \musicglyph #"accordion.accDot" } % *

accFreebaseE = \markup { \combine \musicglyph #"accordion.accFreebase" \raise 
#0.55 \musicglyph #"accordion.accDot" } % *

accFreebaseFE = \markup { \combine \musicglyph 
#"accordion.accFreebase" \combine \raise #0.55 \musicglyph 
#"accordion.accDot" \raise #1.55 \musicglyph #"accordion.accDot" } % *

accBayanbaseT = \markup { \combine \musicglyph #"accordion.accBayanbase" \raise 
#2.55 \musicglyph #"accordion.accDot" } % *

accBayanbaseF = \markup { \combine \musicglyph #"accordion.accBayanbase" \raise 
#1.55 \musicglyph #"accordion.accDot" } % *

accBayanbaseE = \markup { \combine \musicglyph #"accordion.accBayanbase" \raise 
#0.55 \musicglyph #"accordion.accDot" } % *

accBayanbaseTF = \markup { \combine \musicglyph 
#"accordion.accBayanbase" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \raise #2.55 \musicglyph #"accordion.accDot" } % *

accBayanbaseTE = \markup { \combine \musicglyph 
#"accordion.accBayanbase" \combine \raise #0.55 \musicglyph 
#"accordion.accDot" \raise #2.55 \musicglyph #"accordion.accDot" } % *

accBayanbaseFE = \markup { \combine \musicglyph 
#"accordion.accBayanbase" \combine \raise #0.55 \musicglyph 
#"accordion.accDot" \raise #1.55 \musicglyph #"accordion.accDot" } % *

accBayanbaseTFE = \markup { \combine \musicglyph 
#"accordion.accBayanbase" \combine \raise #0.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \raise #2.55 \musicglyph #"accordion.accDot" } % *

accBayanbaseTutti = \markup { \combine \musicglyph 
#"accordion.accBayanbase" \combine \raise #0.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \raise #2.55 \musicglyph #"accordion.accDot" } % equals to 
accBayanbaseTFE *

accStdbaseT = \markup { \combine \musicglyph #"accordion.accStdbase" \raise 
#3.55 \musicglyph #"accordion.accDot" }

accStdbaseF = \markup { \combine \musicglyph #"accordion.accStdbase" \raise 
#2.55 \musicglyph #"accordion.accDot" } % *

accStdbaseE = \markup { \combine \musicglyph #"accordion.accStdbase" \raise 
#1.55 \musicglyph #"accordion.accDot" }

accStdbaseS = \markup { \combine \musicglyph #"accordion.accStdbase" \raise 
#0.55 \musicglyph #"accordion.accDot" }

accStdbaseTF = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #3.55 \musicglyph #"accordion.accDot" \raise #2.55 \musicglyph 
#"accordion.accDot" } % *

accStdbaseTE = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #3.55 \musicglyph #"accordion.accDot" \raise #1.55 \musicglyph 
#"accordion.accDot" }

accStdbaseTS = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #3.55 \musicglyph #"accordion.accDot" \raise #0.55 \musicglyph 
#"accordion.accDot" }

accStdbaseFE = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #2.55 \musicglyph #"accordion.accDot" \raise #1.55 \musicglyph 
#"accordion.accDot" } % *

accStdbaseFS = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #2.55 \musicglyph #"accordion.accDot" \raise #0.55 \musicglyph 
#"accordion.accDot" }

accStdbaseES = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #1.55 \musicglyph #"accordion.accDot" \raise #0.55 \musicglyph 
#"accordion.accDot" }

accStdbaseTFE = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #3.55 \musicglyph #"accordion.accDot" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \raise #1.55 \musicglyph #"accordion.accDot" }

accStdbaseTFS = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #3.55 \musicglyph #"accordion.accDot" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" }

accStdbaseTES = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #3.55 \musicglyph #"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" }

accStdbaseFES = \markup { \combine \musicglyph #"accordion.accStdbase" \combine 
\raise #2.55 \musicglyph #"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" } % *

accStdbaseTFES = \markup { \combine \musicglyph 
#"accordion.accStdbase" \combine \raise #3.55 \musicglyph 
#"accordion.accDot" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" } % *

accStdbaseTutti = \markup { \combine \musicglyph 
#"accordion.accStdbase" \combine \raise #3.55 \musicglyph 
#"accordion.accDot" \combine \raise #2.55 \musicglyph 
#"accordion.accDot" \combine \raise #1.55 \musicglyph 
#"accordion.accDot" \raise #0.55 \musicglyph #"accordion.accDot" } % equal to 
accStdbaseTFES *




discant = \relative c' {
        \clef treble
        \key c \major
        \time 4/4
        #(set-accidental-style 'modern)
        c1^\accDiscantF
        c^\accDiscantE 
        c^\accDiscantEh 
        c^\accDiscantEhh 
        c^\accDiscantS 
        c^\accDiscantFE 
        c^\accDiscantFS 
        c^\accDiscantFEh 
        c^\accDiscantFEhh 
        c^\accDiscantSE 
        c^\accDiscantSEh 
        c^\accDiscantSEhh 
        c^\accDiscantEEh 
        c^\accDiscantEEhh 
        c^\accDiscantEhEhh 
        c^\accDiscantFEEh 
        c^\accDiscantFEEhh
        c^\accDiscantFES 
        c^\accDiscantFEhEhh 
        c^\accDiscantFEhS 
        c^\accDiscantFEhhS 
        c^\accDiscantEEhEhh 
        c^\accDiscantEEhS 
        c^\accDiscantEEhhS 
        c^\accDiscantEhEhhS 
        c^\accDiscantFEEhEhh 
        c^\accDiscantFEEhS 
        c^\accDiscantFEEhhS 
        c^\accDiscantFEEhEhhS 
        c^\accDiscantTuttiChoirFive % equals to above c^\accDiscantFEEhEhhS
        c^\accDiscantTuttiChoirFour % equals to above c^\accDiscantFEEhS
}
base = \relative c {
        \clef bass
        \key c \major
        \time 4/4
        #(set-accidental-style 'modern)
        c1^\accFreebaseF %% freebase section not used, so freebase registers 
are 
put in current section.
        c^\accFreebaseE 
        c^\accFreebaseFE 
        c^\accBayanbaseT 
        c^\accBayanbaseF 
        c^\accBayanbaseE 
        c^\accBayanbaseTF 
        c^\accBayanbaseTE 
        c^\accBayanbaseFE 
        c^\accBayanbaseTFE 
        c^\accBayanbaseTutti % equals to above c^\accBayanbaseTFE
        c^\accStdbaseT 
        c^\accStdbaseF 
        c^\accStdbaseE 
        c^\accStdbaseS 
        c^\accStdbaseTF 
        c^\accStdbaseTE 
        c^\accStdbaseTS 
        c^\accStdbaseFE 
        c^\accStdbaseFS 
        c^\accStdbaseES 
        c^\accStdbaseTFE 
        c^\accStdbaseTFS 
        c^\accStdbaseTES 
        c^\accStdbaseFES
        c^\accStdbaseTFES 
        c^\accStdbaseTutti % equal to above c^\accStdbaseTFES
}
freebase = \relative c {
        \clef bass
        \key c \major
        \time 4/4
        #(set-accidental-style 'modern)
        c
}
\score {
        \context PianoStaff <<
                %\set PianoStaff.instrumentName = "Accordion"
                \context Staff = upper \discant
                \context Staff = lower \base
        >>
        \header {
                title = ""
                subtitle = ""
                %%subsubtitle = ""
                %%poet = ""
                composer = ""
                %%meter = ""
                %%opus = ""
                %%arranger = ""
                %%instrument = ""
                %%dedication = ""
                %%piece = ""
        }
}