# File lib/headless/cli_util.rb, line 14 def self.path_to(app) exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : [''] ENV['PATH'].split(File::PATH_SEPARATOR).each do |path| exts.each { |ext| exe = File.join(path, "#{app}#{ext}") return exe if File.executable?(exe) && !File.directory?(exe) } end return nil end