diff --git a/src/testdir/test_arglist.vim b/src/testdir/test_arglist.vim
index 4f16941..7474d33 100644
--- a/src/testdir/test_arglist.vim
+++ b/src/testdir/test_arglist.vim
@@ -82,6 +82,10 @@
   new
   arga
   call assert_equal(0, len(argv()))
+
+  if has('unix')
+    call assert_fails('argadd `Xdoes_not_exist`', 'E479:')
+  endif
 endfunc
 
 func Test_argadd_empty_curbuf()
@@ -434,6 +438,8 @@
   argdel
   call Assert_argc(['a', 'c', 'd'])
   %argdel
+
+  call assert_fails('argdel does_not_exist', 'E480:')
 endfunc
 
 func Test_argdelete_completion()
diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index 3c5513b..5d91952 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -845,6 +845,14 @@
   call feedkeys(":doautocmd BufNew,BufEn\<C-A>\<C-B>\"\<CR>", 'xt')
   call assert_equal("\"doautocmd BufNew,BufEnter", @:)
 
+  " completion of file name in :doautocmd
+  call writefile([], 'Xfile1')
+  call writefile([], 'Xfile2')
+  call feedkeys(":doautocmd BufEnter Xfi\<C-A>\<C-B>\"\<CR>", 'xt')
+  call assert_equal("\"doautocmd BufEnter Xfile1 Xfile2", @:)
+  call delete('Xfile1')
+  call delete('Xfile2')
+
   " completion for the :augroup command
   augroup XTest
   augroup END
@@ -1415,6 +1423,10 @@
   argadd `=['a', 'b', 'c']`
   call assert_equal(['a', 'b', 'c'], argv())
   %argd
+
+  argadd `echo abc def`
+  call assert_equal(['abc def'], argv())
+  %argd
 endfunc
 
 " Test for the :! command
diff --git a/src/testdir/test_spellfile.vim b/src/testdir/test_spellfile.vim
index c0852e0..3bb42a5 100644
--- a/src/testdir/test_spellfile.vim
+++ b/src/testdir/test_spellfile.vim
@@ -1016,6 +1016,33 @@
   call delete('XtestCOMMON-utf8.spl')
 endfunc
 
+" Test NOSUGGEST (see :help spell-COMMON)
+func Test_spellfile_NOSUGGEST()
+  call writefile(['2', 'foo/X', 'fog'], 'XtestNOSUGGEST.dic')
+  call writefile(['NOSUGGEST X'], 'XtestNOSUGGEST.aff')
+
+  mkspell! XtestNOSUGGEST-utf8.spl XtestNOSUGGEST
+  set spell spelllang=XtestNOSUGGEST-utf8.spl
+
+  for goodword in ['foo', 'Foo', 'FOO', 'fog', 'Fog', 'FOG']
+    call assert_equal(['', ''], spellbadword(goodword), goodword)
+  endfor
+  for badword in ['foO', 'fOO', 'fooo', 'foog', 'foofog', 'fogfoo']
+    call assert_equal([badword, 'bad'], spellbadword(badword))
+  endfor
+
+  call assert_equal(['fog'], spellsuggest('fooo', 1))
+  call assert_equal(['fog'], spellsuggest('fOo', 1))
+  call assert_equal(['fog'], spellsuggest('foG', 1))
+  call assert_equal(['fog'], spellsuggest('fogg', 1))
+
+  set spell& spelllang&
+  call delete('XtestNOSUGGEST.dic')
+  call delete('XtestNOSUGGEST.aff')
+  call delete('XtestNOSUGGEST-utf8.spl')
+endfunc
+
+
 " Test CIRCUMFIX (see: :help spell-CIRCUMFIX)
 func Test_spellfile_CIRCUMFIX()
   " Example taken verbatim from https://github.com/hunspell/hunspell/tree/master/tests
diff --git a/src/testdir/test_substitute.vim b/src/testdir/test_substitute.vim
index 0c36748..0806fd2 100644
--- a/src/testdir/test_substitute.vim
+++ b/src/testdir/test_substitute.vim
@@ -943,4 +943,41 @@
   bwipe!
 endfunc
 
+" Test using the 'gdefault' option (when on, flag 'g' is default on).
+func Test_substitute_gdefault()
+  new
+
+  " First check without 'gdefault'
+  call setline(1, 'foo bar foo')
+  s/foo/FOO/
+  call assert_equal('FOO bar foo', getline(1))
+  call setline(1, 'foo bar foo')
+  s/foo/FOO/g
+  call assert_equal('FOO bar FOO', getline(1))
+  call setline(1, 'foo bar foo')
+  s/foo/FOO/gg
+  call assert_equal('FOO bar foo', getline(1))
+
+  " Then check with 'gdefault'
+  set gdefault
+  call setline(1, 'foo bar foo')
+  s/foo/FOO/
+  call assert_equal('FOO bar FOO', getline(1))
+  call setline(1, 'foo bar foo')
+  s/foo/FOO/g
+  call assert_equal('FOO bar foo', getline(1))
+  call setline(1, 'foo bar foo')
+  s/foo/FOO/gg
+  call assert_equal('FOO bar FOO', getline(1))
+
+  " Setting 'compatible' should reset 'gdefault'
+  call assert_equal(1, &gdefault)
+  set compatible
+  call assert_equal(0, &gdefault)
+  set nocompatible
+  call assert_equal(0, &gdefault)
+
+  bw!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index 97ddb84..b649014 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3345,
+/**/
     3344,
 /**/
     3343,