Gem::Specification#sanitize_string

# File tmp/rubies/ruby-4.0.0/lib/rubygems/specification.rb, line 1449
def sanitize_string(string)
  return string unless string

  # HACK: the #to_s is in here because RSpec has an Array of Arrays of
  # Strings for authors.  Need a way to disallow bad values on gemspec
  # generation.  (Probably won't happen.)
  string.to_s
end