Issue #9323 has been reported by Glass_saga (Masaki Matsushita).

----------------------------------------
Feature #9323: IO#writev
https://bugs.ruby-lang.org/issues/9323

Author: Glass_saga (Masaki Matsushita)
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: current: 2.2.0


I propose addition of IO#writev.
It enables gather output from multiple buffers.
If writev(2) is not available, IO#writev uses Array#join to emulate atomic write.


-- 
http://bugs.ruby-lang.org/