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.

X:1
T:Bear Dance
R:polka
S: Nick Barber
M:2/4
L:1/16
Q:1/4=120
K:Em
"Em" B2 E2 E4| B2 E2 E3 F| G2G2F2G2|"D" A4G2A2|
|"Em" B2B2 "D" A2A2|"Em" G2G2 "D" F4|"Em" E2G2 "D" F2D2|"Em" E4 E4:|
"Em" E2G2E2G2|"D" F2D2D4|"C" E2G2E2G2|"D" A4G2A2|
|"Em" B2B2 "D" A2A2|"C" G2G2 "D" F4|"Em" E2G2 "D" F2D2|"Em" E4 E4:|