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: Captain Lanoe's Quick March
M: 6/8
L: 1/8
Q: 160
K: Gmaj
"G" G2 B d2 g | "G" gfd d3 | "D" cdc "G" B2 B | "D" AGA "Em" B2 G |
"G" G2 B d2 g | "G" gfd d3 | "D" cdc "G" B2 B | "D" AGA "G" G3 :|
"B" B3 B3 | "B" BAB "D" c3 | "G" B2 c d2 c | "G" B2 A B2 G |
"Em" B3 B3 | "Em" BAB "C" c3 | "G" B2 g dBG | "D" A3 "G" G3 :|