patch 8.0.0031
Problem:    After ":bwipeout" 'fileformat' is not set to the right default.
Solution:   Get the default from 'fileformats'. (Mike Williams)
diff --git a/src/testdir/test_alot.vim b/src/testdir/test_alot.vim
index e574391..d24b97f 100644
--- a/src/testdir/test_alot.vim
+++ b/src/testdir/test_alot.vim
@@ -12,10 +12,11 @@
 source test_expr.vim
 source test_expand_dllpath.vim
 source test_feedkeys.vim
-source test_fnamemodify.vim
 source test_file_perm.vim
+source test_fileformat.vim
 source test_filter_cmd.vim
 source test_filter_map.vim
+source test_fnamemodify.vim
 source test_glob2regpat.vim
 source test_goto.vim
 source test_help_tagjump.vim
diff --git a/src/testdir/test_fileformat.vim b/src/testdir/test_fileformat.vim
new file mode 100644
index 0000000..584f20c
--- /dev/null
+++ b/src/testdir/test_fileformat.vim
@@ -0,0 +1,17 @@
+" Test behavior of fileformat after bwipeout of last buffer
+
+func Test_fileformat_after_bw()
+  bwipeout
+  set fileformat&
+  if &fileformat == 'dos'
+    let test_fileformats = 'unix'
+  elseif &fileformat == 'unix'
+    let test_fileformats = 'mac'
+  else  " must be mac
+    let test_fileformats = 'dos'
+  endif
+  exec 'set fileformats='.test_fileformats
+  bwipeout!
+  call assert_equal(test_fileformats, &fileformat)
+  set fileformats&
+endfunc