Check file format such as Windows(CR+LF), Xnix(LF), Mac(LF+CR) or something.

check_file_format.rb

# coding: cp932

Dir.glob( "**/*" ) do |f|
  next if FileTest.directory? f
  next if [
    /^.git\//   , /^RPC\//   , /^Tools\//  , /^TivaWare\// , /^.*~$/     , /^.*\.xlsx?$/ , /^.*\.docx?$/ , /^.*\.asta$/ ,
    /^.*\.mm$/  , /^.*\.md$/ , /^.*\.lib$/ , /^.*\.pp$/    , /^.*\.obj$/ , /^.*\.mk$/    , /^.*\.dat$/   , /^.*\.out$/  ,
    /^.*\.opt$/ , /^.*\.so$/ , /^.*\.dll$/ , /^.*\.exe$/   , /^.*\.bin$/ , /^.*\.xml$/   , /^.*\.png$/
  ].detect{ |re| f =~ re }

  File.open( f, 'rb' ) do |g|
    g.binmode
    r = g.read rescue :unknown
    if r =~ /\r\n/
      if r =~ /[^\r]\n/ 
        puts "CR+NL & NL: #{f}"
      else
        puts "CR+NL     : #{f}"
      end
    else
      if r =~ /\r/ 
        puts "CR        : #{f}"
      elsif r =~ /\n\r/ 
        puts "NL+CR     : #{f}"
      elsif r == :unknown
        puts "UN        : #{f}"
      else
        puts "NL        : #{f}"
      end
    end
  end
end