#!/usr/bin/env ruby
# frozen_string_literal: true

# sample-crlf.rb: a Ruby file saved with Windows (CRLF) line endings.
# Free sample from 99helpers.com/file-types/rb
#
# ruby sample-crlf.rb   works: Ruby accepts CRLF line endings. With -w it
#                       warns: "shebang line ending with \r may cause problems".
# ./sample-crlf.rb      fails on macOS and Linux, because the shebang line ends
#                       in an invisible carriage return and the system looks for
#                       a program called "ruby\r":
#                       /usr/bin/env: 'ruby\r': No such file or directory
# Fix: convert to LF with dos2unix, or your editor's line-ending setting.

data = File.binread(__FILE__)
crlf = data.scan("\r\n").size
lf_only = data.count("\n") - crlf
puts "#{crlf} lines end in CRLF and #{lf_only} in LF alone."
puts "Ruby ran this file anyway."