website/gems/lib/asciidoctor/helpers.rb

# frozen_string_literal: true

class String
  def to_kebab
    self.gsub(/\s+/, '-')           # Replace all spaces with dashes.
        .gsub(/[^a-zA-Z0-9-]/, '')  # Remove all non-alphanumerical (and dashes) characters.
        .gsub(/-+/, '-')            # Reduce all dashes into only one.
        .gsub(/^-|-+$/, '')         # Remove all leading and trailing dashes.
        .downcase
  end
end