abc2midi messes up with repeats in sections after a [1..[2 |] Jane found out that abc2midi output goes rather random sometimes. I've narrowed this down to sections of music after a [1..[2 |] repeat has happened. Work around by adding explicit |: for those sections, which doesn't (to my mind) look so good printed but gets correct behaviour from abc2midi.

% Format for a graphic with a single tune
continueall false
measurenb false
writefields SRBDZHN 0
titleformat Y0
titlespace 0
topspace 0
infoline false
writehistory false
musiconly true
scale 0.9
botmargin 0pt
leftmargin 0pt
rightmarin 0pt
topmargin 0pt