From a8d1b5f721f51c1efbe6f55f3515f159ad0dfc8c Mon Sep 17 00:00:00 2001
From: "Justin M. Keyes" <justinkz@gmail.com>
Date: Thu, 4 Aug 2016 01:47:05 -0400
Subject: readfile(): readonly: Also check "not writable".

---
 src/nvim/fileio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/nvim/fileio.c b/src/nvim/fileio.c
index cfce02cf27..3b598bd64b 100644
--- a/src/nvim/fileio.c
+++ b/src/nvim/fileio.c
@@ -496,7 +496,8 @@ readfile (
   // Check readonly.
   file_readonly = false;
   if (!read_buffer && !read_stdin) {
-    if (!newfile || readonlymode || !(os_getperm(fname) & 0222)) {
+    if (!newfile || readonlymode || !(perm & 0222)
+        || !os_file_is_writable((char *)fname)) {
       file_readonly = true;
     }
     fd = os_open((char *)fname, O_RDONLY, 0);
-- 
cgit