From 7381c93e2c0e7aa20d29cbc3c6c45de71e22a258 Mon Sep 17 00:00:00 2001
From: Marco Hinz <mh.codebro@gmail.com>
Date: Mon, 8 Apr 2019 20:00:41 +0200
Subject: vim-patch:8.1.1134: buffer for quickfix window is reused for another
 file

Problem:    Buffer for quickfix window is reused for another file.
Solution:   Don't reuse the quickfx buffer. (Yegappan Lakshmanan)

https://github.com/vim/vim/commit/39803d82dbb215d2eea9fcd6cf2961b71515a438
---
 src/nvim/buffer.c                  |  1 +
 src/nvim/testdir/test_quickfix.vim | 14 ++++++++++++++
 2 files changed, 15 insertions(+)

(limited to 'src')

diff --git a/src/nvim/buffer.c b/src/nvim/buffer.c
index 9a58529736..703a89d31f 100644
--- a/src/nvim/buffer.c
+++ b/src/nvim/buffer.c
@@ -1868,6 +1868,7 @@ bool curbuf_reusable(void)
           && curbuf->b_ffname == NULL
           && curbuf->b_nwindows <= 1
           && (curbuf->b_ml.ml_mfp == NULL || BUFEMPTY())
+          && !bt_quickfix(curbuf)
           && !curbufIsChanged());
 }
 
diff --git a/src/nvim/testdir/test_quickfix.vim b/src/nvim/testdir/test_quickfix.vim
index cb3e7ca8f6..6227095f4f 100644
--- a/src/nvim/testdir/test_quickfix.vim
+++ b/src/nvim/testdir/test_quickfix.vim
@@ -2664,3 +2664,17 @@ func Test_qfwin_pos()
   call assert_equal(3, winnr())
   close
 endfunc
+
+" Test to make sure that an empty quickfix buffer is not reused for loading
+" a normal buffer.
+func Test_empty_qfbuf()
+  enew | only
+  call writefile(["Test"], 'Xfile1')
+  call setqflist([], 'f')
+  copen | only
+  let qfbuf = bufnr('')
+  edit Xfile1
+  call assert_notequal(qfbuf, bufnr(''))
+  enew
+  call delete('Xfile1')
+endfunc
-- 
cgit