From 68a11b6e6a73cd2e9b49e5df9973877b2fed6277 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Mon, 13 May 2019 09:58:42 -0700
Subject: [PATCH] [3.7] bpo-36807: When saving a file in IDLE, call flush and
 fsync (GH-13102) (#13288)

Includes blurb fix in 85c69d5
(cherry picked from commit 4f098b35f58e911639f8e9adc393d5cf5c792e7f)
---
 Lib/idlelib/iomenu.py                                          | 2 ++
 Misc/NEWS.d/next/IDLE/2019-05-05-16-27-53.bpo-13102.AGNWYJ.rst | 1 +
 2 files changed, 3 insertions(+)
 create mode 100644 Misc/NEWS.d/next/IDLE/2019-05-05-16-27-53.bpo-13102.AGNWYJ.rst

diff --git a/Lib/idlelib/iomenu.py b/Lib/idlelib/iomenu.py
index f5bced597aa8..b9e813be0630 100644
--- a/Lib/idlelib/iomenu.py
+++ b/Lib/idlelib/iomenu.py
@@ -384,6 +384,8 @@ class IOBinding:
         try:
             with open(filename, "wb") as f:
                 f.write(chars)
+                f.flush()
+                os.fsync(f.fileno())
             return True
         except OSError as msg:
             tkMessageBox.showerror("I/O Error", str(msg),
diff --git a/Misc/NEWS.d/next/IDLE/2019-05-05-16-27-53.bpo-13102.AGNWYJ.rst b/Misc/NEWS.d/next/IDLE/2019-05-05-16-27-53.bpo-13102.AGNWYJ.rst
new file mode 100644
index 000000000000..2a905bf0eecf
--- /dev/null
+++ b/Misc/NEWS.d/next/IDLE/2019-05-05-16-27-53.bpo-13102.AGNWYJ.rst
@@ -0,0 +1 @@
+When saving a file, call os.fsync() so bits are flushed to e.g. USB drive.
-- 
2.47.3