ruby port of https://github.com/githubert/schmutz

schmutz.rb

module Schmutz
  Types = {
    feinstaub: ["\u0323", "\u0307", "\u0312"],
    mettwurst: ["\u0314", "\u031C", "\u0358", "\u0353", "\u0335"],
    nein_nein: ["\u0337", "\u0338", "\u0336", "\u0335", "\u20d2", "\u20d3", "\u20e5", "\u20e6", "\u20eb"]
  }.freeze
  
  Types.each do |name, runes|
    define_singleton_method name do |input, prop = 0.25|
      mangle(input, runes, prop)
    end
  end

  def self.mangle(input, runes, prop)
    input.each_char.with_object("") do |char, output|
      output << char
      output << runes.sample if (rand < prop)
    end
  end
end

schmutz_example.rb

Schmutz.feinstaub('Hello World!')
Schmutz.mettwurst('Hallo Welt!', 0.75)
Schmutz.nein_nein('Hallo Welt!', 0.5)