You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: coverage-MEM.rb
    path of file: ./repos/genometools/scripts
    
    the code of the file until where you have to start completion: #!/usr/bin/env ruby

# Determine how many MEMs computed by repfind are contained in local alignments
# computed by seed_extend.

require "scripts/evalseedhash.rb"

def makesystemcall(ar
    
def comparefunc(mem, ali, sorting=false)
  if mem[:seq1] != ali[:seq1] then return mem[:seq1] <=> ali[:seq1] end
  if mem[:seq2] != ali[:seq2] then return mem[:seq2] <=> ali[:seq2] end
  if sorting then
    return mem[:start1] <=> ali[:start1]
  elsif mem[:start1] < ali[:start1] then  # alignment starts behind MEM
    return -1
  else
    return 0
  end