# File lib/childprocess.rb, line 89 def close_on_exec(file) if file.respond_to?(:close_on_exec=) file.close_on_exec = true elsif file.respond_to?(:fcntl) && defined?(Fcntl::FD_CLOEXEC) file.fcntl Fcntl::F_SETFD, Fcntl::FD_CLOEXEC elsif windows? Windows.dont_inherit file else raise Error, "not sure how to set close-on-exec for #{file.inspect} on #{platform.inspect}" end end