read_gitconfig.rb

config = {}
group = nil

File.foreach("#{ENV['HOME']}/.gitconfig") do |line|
  line.strip!
  if line[0] != ?# and line =~ /\S/
    if line =~ /^\[(.*)\]$/
      group = $1
    else
      key, value = line.split("=")
      (config[group]||={})[key.strip] = value.strip
    end
  end
end