raise "SEQ_LEN_LEFT + SEQ_LEN_RIGHT != SEQ_LEN #{len_left} + #{len_right} != #{entry.length}"
end
- entry1 = entry.subseq(0, len_left)
- entry2 = entry.subseq(len_left)
+ entry1 = entry[0 ... len_left]
+ entry2 = entry[len_left .. -1]
if entry.seq_name =~ /^[^ ]+ \d:/
entry2.seq_name.sub!(/ \d:/, " 2:")