From 39e284772d5ee7214341fce9e25f9d7e051dd39e Mon Sep 17 00:00:00 2001
From: Jan Edmund Lazo <janedmundlazo@hotmail.com>
Date: Thu, 21 Jun 2018 21:44:18 -0400
Subject: vim-patch:8.0.0642: writefile() continues after detecting an error

Problem:    writefile() continues after detecting an error.
Solution:   Bail out as soon as an error is detected. (suggestions by Nikolai
            Pavlov, closes vim/vim#1476)
https://github.com/vim/vim/commit/8cf91286ca46a501d24e4b7d631b193256782c88
---
 src/nvim/testdir/test_writefile.vim | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

(limited to 'src/nvim/testdir/test_writefile.vim')

diff --git a/src/nvim/testdir/test_writefile.vim b/src/nvim/testdir/test_writefile.vim
index d820c580ac..13c1a888d9 100644
--- a/src/nvim/testdir/test_writefile.vim
+++ b/src/nvim/testdir/test_writefile.vim
@@ -1,5 +1,6 @@
+" Tests for the writefile() function.
 
-function! Test_WriteFile()
+func Test_writefile()
   let f = tempname()
   call writefile(["over","written"], f, "b")
   call writefile(["hello","world"], f, "b")
@@ -13,4 +14,20 @@ function! Test_WriteFile()
   call assert_equal("morning", l[3])
   call assert_equal("vimmers", l[4])
   call delete(f)
-endfunction
+endfunc
+
+func Test_writefile_fails_gently()
+  call assert_fails('call writefile(["test"], "Xfile", [])', 'E730:')
+  call assert_false(filereadable("Xfile"))
+  call delete("Xfile")
+
+  call assert_fails('call writefile(["test", [], [], [], "tset"], "Xfile")', 'E730:')
+  call assert_false(filereadable("Xfile"))
+  call delete("Xfile")
+
+  call assert_fails('call writefile([], "Xfile", [])', 'E730:')
+  call assert_false(filereadable("Xfile"))
+  call delete("Xfile")
+
+  call assert_fails('call writefile([], [])', 'E730:')
+endfunc
-- 
cgit