1  
   2  #!/usr/bin/env ruby
   3  
   4  email = STDIN.read
   5  url_email = email.gsub(/./) { |c| '%' + c.unpack('H2' * c.size).join('%').upcase }
   6  html_email = url_email[1..-1].split(/%/).collect { |c| sprintf("&#%03d;", c.to_i(16)) }.join
   7  
   8  print "<a href=\"mailto:#{url_email}\">#{html_email}</a>"