in lib/licensee/commands/diff.rb [41:47]
def license_to_diff
return options[:license_to_diff] if options[:license_to_diff]
return project.license_file if remote? || ($stdin.tty? && project.license_file)
@license_to_diff ||= Licensee::ProjectFiles::LicenseFile.new($stdin.read, 'LICENSE')
end