Help migrating a script from lilypond 2.10 to 2.12

[Allan Spagnol Comar]

I had made the barre parts of the following script and post it on
lilypond wiki for guitar barres. It had worked fine from lilypond 2.6
to 2.10, last week I had try to use it on 2.12 and it did not print
nothing.

Can some one help me fix it?

Thanks,

-- 
Allan.
O mundo pode ser melhor se acreditarmos nele.

guitar.ly
Description: Text Data