Generate rake stats in a CSV format, fit for easy manipulation: `rake stats | bin/export_rake_stats_to_csv.rb >> tmp/rake_stats.csv`

export_rake_stats_to_csv.rb

#!/usr/bin/env ruby

# Read stats from input and get an array of arrays (a valid csv representation)
stats = STDIN.read.split("\n")[1..-2].reject { |line| line.start_with? '+' }.map { |line| line.split('|')[1..-1] }

# Write csv to output
require 'csv'
csv_string = CSV.generate do |csv|
  stats.each { |row| csv << row }
end

puts csv_string