list rails controller_path, action from routes.

format_routes.rb

#!/usr/bin/env ruby

ARGF.each do |line|
  case line.chomp
  when /^\s+Prefix/, "" then
    # header
  when /^Routes for /
    # fin routes.
    break
  when /^\s*(?:(\w+) )?(GET|POST|PUT|PATCH|DELETE)\s+(\S+)\s+([\w\/]+)#(\w+)/ then
    prefix, verb, url_pattern, controller_path, action = $1, $2, $3, $4, $5
    puts "#{controller_path},#{action}"
  else
    #warn "unparsed: #{line.chomp}"
  end
end

sample.sh

bundle exec rake routes | ruby format_routes.rb | sort