Gem::Specification#add_bindir

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/specification.rb, line 1512
def add_bindir(executables)
  return nil if executables.nil?

  if @bindir
    Array(executables).map {|e| File.join(@bindir, e) }
  else
    executables
  end
rescue StandardError
  nil
end