How can I delete special characters?

Question

I\'m practicing with Ruby and regex to delete certain unwanted characters. For example:

input = input.gsub(/<\\/?[^>]*>/, \'\')

and fo

Answer 1

If you just wanted ASCII characters, then you can use:

original = "aøbauhrhræoeuacå" 
cleaned = ""
original.each_byte { |x|  cleaned << x unless x > 127   }
cleaned   # => "abauhrhroeuac"