module Thor::Util

def self.ruby_command
  @ruby_command ||= begin
    ruby = File.join(RbConfig::CONFIG['bindir'], RbConfig::CONFIG['ruby_install_name'])
    ruby << RbConfig::CONFIG['EXEEXT']
    # escape string in case path to ruby executable contain spaces.
    ruby.sub!(/.*\s.*/m, '"\&"')
    ruby
  end
end