From f6962d28bfe2d692bcfe345caac56333cc57e772 Mon Sep 17 00:00:00 2001
From: Dominic Della Valle <ddvpublic@gmail.com>
Date: Mon, 4 Mar 2019 14:11:25 -0500
Subject: [PATCH] cli: don't sync output to NUL on Windows

fixes ipfs/go-ipfs#6039
---
 cli/error_windows.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/cli/error_windows.go b/cli/error_windows.go
index f29994a7..0a2d9a31 100644
--- a/cli/error_windows.go
+++ b/cli/error_windows.go
@@ -6,11 +6,14 @@ import (
 	"syscall"
 )
 
-const invalid_file_handle syscall.Errno = 0x6
+const (
+	invalid_file_handle     syscall.Errno = 0x6 // console output is not buffered on this platform
+	invalid_handle_function syscall.Errno = 0x1 // this is specifically returned when NUL is the FlushFileBuffers target
+)
 
 func isErrnoNotSupported(err error) bool {
 	switch err {
-	case syscall.EINVAL, syscall.ENOTSUP, syscall.ENOTTY, invalid_file_handle:
+	case syscall.EINVAL, syscall.ENOTSUP, syscall.ENOTTY, invalid_file_handle, invalid_handle_function:
 		return true
 	}
 	return false