From 5972ff00560b497de4cfe51d529b0c5aa9dd4fad Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Sat, 8 Jun 2019 10:53:43 +0200
Subject: [PATCH 2/4] vim-patch:83799a7b7

patch 8.0.1339: no test for what 8.0.1335 fixes

Problem:    No test for what 8.0.1335 fixes.
Solution:   Add a test. (Yasuhiro Matsumoto, closes vim/vim#2373)
https://github.com/vim/vim/commit/83799a7b7414048df4ff4e507293416e8438e225
---
 src/nvim/testdir/test_writefile.vim | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/nvim/testdir/test_writefile.vim b/src/nvim/testdir/test_writefile.vim
index aeee6ad88b..83047d613f 100644
--- a/src/nvim/testdir/test_writefile.vim
+++ b/src/nvim/testdir/test_writefile.vim
@@ -155,3 +155,11 @@ func Test_writefile_autowrite_nowrite()
   bwipe!
   set noautowrite
 endfunc
+
+func Test_writefile_sync_dev_stdout()
+  if !has('unix')
+    return
+  endif
+  " Just check that this doesn't cause an error.
+  call writefile(['one'], '/dev/stdout')
+endfunc

From b6eeb40d190d6057bd48ed6b37f5bc472e2eb14b Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Sat, 8 Jun 2019 10:54:11 +0200
Subject: [PATCH 3/4] vim-patch:9980b37a80

patch 8.0.1744: on some systems /dev/stdout isn't writable

Problem:    On some systems /dev/stdout isn't writable.
Solution:   Skip test if writing is not possible. (James McCoy, closes vim/vim#2830)
https://github.com/vim/vim/commit/9980b37a80dc72eef05bf8862aaf475ab17790a5
---
 src/nvim/testdir/test_writefile.vim | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/nvim/testdir/test_writefile.vim b/src/nvim/testdir/test_writefile.vim
index 83047d613f..54997c7692 100644
--- a/src/nvim/testdir/test_writefile.vim
+++ b/src/nvim/testdir/test_writefile.vim
@@ -160,6 +160,10 @@ func Test_writefile_sync_dev_stdout()
   if !has('unix')
     return
   endif
-  " Just check that this doesn't cause an error.
-  call writefile(['one'], '/dev/stdout')
+  if filewritable('/dev/stdout')
+    " Just check that this doesn't cause an error.
+    call writefile(['one'], '/dev/stdout')
+  else
+    throw 'Skipped: /dev/stdout is not writable'
+  endif
 endfunc

From 7d542b59002f9bef608fd89a2b70fc7baa7916dc Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Sat, 8 Jun 2019 10:55:09 +0200
Subject: [PATCH 4/4] Test_writefile_sync_dev_stdout: use s for sync explicitly

---
 src/nvim/testdir/test_writefile.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/nvim/testdir/test_writefile.vim b/src/nvim/testdir/test_writefile.vim
index 54997c7692..9c9e051bc9 100644
--- a/src/nvim/testdir/test_writefile.vim
+++ b/src/nvim/testdir/test_writefile.vim
@@ -162,7 +162,7 @@ func Test_writefile_sync_dev_stdout()
   endif
   if filewritable('/dev/stdout')
     " Just check that this doesn't cause an error.
-    call writefile(['one'], '/dev/stdout')
+    call writefile(['one'], '/dev/stdout', 's')
   else
     throw 'Skipped: /dev/stdout is not writable'
   endif