diff --git a/src/diff.c b/src/diff.c
index be7e38ccbe..92e1a054e7 100644
--- a/src/diff.c
+++ b/src/diff.c
@@ -641,7 +641,7 @@ diff_write(buf_T *buf, char_u *fname)
  */
     void
 ex_diffupdate(
-    exarg_T	*eap UNUSED)	    /* can be NULL */
+    exarg_T	*eap)	    /* can be NULL */
 {
     buf_T	*buf;
     int		idx_orig;
diff --git a/src/eval.c b/src/eval.c
index 9fd39d804b..9f9172c964 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -9217,7 +9217,7 @@ f_argidx(typval_T *argvars UNUSED, typval_T *rettv)
  * "arglistid()" function
  */
     static void
-f_arglistid(typval_T *argvars UNUSED, typval_T *rettv)
+f_arglistid(typval_T *argvars, typval_T *rettv)
 {
     win_T	*wp;
 
@@ -17809,7 +17809,7 @@ f_round(typval_T *argvars, typval_T *rettv)
  * "screenattr()" function
  */
     static void
-f_screenattr(typval_T *argvars UNUSED, typval_T *rettv)
+f_screenattr(typval_T *argvars, typval_T *rettv)
 {
     int		row;
     int		col;
@@ -17829,7 +17829,7 @@ f_screenattr(typval_T *argvars UNUSED, typval_T *rettv)
  * "screenchar()" function
  */
     static void
-f_screenchar(typval_T *argvars UNUSED, typval_T *rettv)
+f_screenchar(typval_T *argvars, typval_T *rettv)
 {
     int		row;
     int		col;
@@ -20996,7 +20996,7 @@ f_virtcol(typval_T *argvars, typval_T *rettv)
  * "visualmode()" function
  */
     static void
-f_visualmode(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
+f_visualmode(typval_T *argvars, typval_T *rettv)
 {
     char_u	str[2];
 
diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index 36e74ea383..6705695349 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -2106,7 +2106,7 @@ set_arglist(char_u *str)
     static int
 do_arglist(
     char_u	*str,
-    int		what UNUSED,
+    int		what,
     int		after UNUSED)		/* 0 means before first one */
 {
     garray_T	new_ga;
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 28f368c25d..8b94851b7c 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -9281,7 +9281,7 @@ ex_bang(exarg_T *eap)
  * ":undo".
  */
     static void
-ex_undo(exarg_T *eap UNUSED)
+ex_undo(exarg_T *eap)
 {
     if (eap->addr_count == 1)	    /* :undo 123 */
 	undo_time(eap->line2, FALSE, FALSE, TRUE);
@@ -9786,7 +9786,7 @@ theend:
 #if ((defined(FEAT_SESSION) || defined(FEAT_EVAL)) && defined(vim_mkdir)) \
 	|| defined(PROTO)
     int
-vim_mkdir_emsg(char_u *name, int prot UNUSED)
+vim_mkdir_emsg(char_u *name, int prot)
 {
     if (vim_mkdir(name, prot) != 0)
     {
diff --git a/src/testdir/runtest.vim b/src/testdir/runtest.vim
index 469a4d3855..0cf50006db 100644
--- a/src/testdir/runtest.vim
+++ b/src/testdir/runtest.vim
@@ -72,6 +72,24 @@ function GetAllocId(name)
   return lnum - top - 1
 endfunc
 
+function RunTheTest(test)
+  echo 'Executing ' . a:test
+  if exists("*SetUp")
+    call SetUp()
+  endif
+
+  call add(s:messages, 'Executing ' . a:test)
+  let s:done += 1
+  try
+    exe 'call ' . a:test
+  catch
+    call add(v:errors, 'Caught exception in ' . a:test . ': ' . v:exception . ' @ ' . v:throwpoint)
+  endtry
+
+  if exists("*TearDown")
+    call TearDown()
+  endif
+endfunc
 
 " Source the test script.  First grab the file name, in case the script
 " navigates away.  g:testname can be used by the tests.
@@ -92,6 +110,9 @@ else
   endtry
 endif
 
+" Names of flaky tests.
+let s:flaky = ['Test_reltime()']
+
 " Locate Test_ functions and execute them.
 set nomore
 redir @q
@@ -106,18 +127,13 @@ endif
 
 " Execute the tests in alphabetical order.
 for s:test in sort(s:tests)
-  echo 'Executing ' . s:test
-  if exists("*SetUp")
-    call SetUp()
-  endif
+  call RunTheTest(s:test)
 
-  call add(s:messages, 'Executing ' . s:test)
-  let s:done += 1
-  try
-    exe 'call ' . s:test
-  catch
-    call add(v:errors, 'Caught exception in ' . s:test . ': ' . v:exception . ' @ ' . v:throwpoint)
-  endtry
+  if len(v:errors) > 0 && index(s:flaky, s:test) >= 0
+    call add(s:messages, 'Flaky test failed, running it again')
+    let v:errors = []
+    call RunTheTest(s:test)
+  endif
 
   if len(v:errors) > 0
     let s:fail += 1
@@ -126,9 +142,6 @@ for s:test in sort(s:tests)
     let v:errors = []
   endif
 
-  if exists("*TearDown")
-    call TearDown()
-  endif
 endfor
 
 if s:fail == 0
diff --git a/src/ui.c b/src/ui.c
index 7844bc6cc2..989c15a2e8 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -1709,13 +1709,21 @@ push_raw_key(char_u *s, int len)
 
     tmpbuf = hangul_string_convert(s, &len);
     if (tmpbuf != NULL)
+    {
 	s = tmpbuf;
 
-    while (len--)
-	inbuf[inbufcount++] = *s++;
-
-    if (tmpbuf != NULL)
+	for (; len--; s++)
+	{
+	    inbuf[inbufcount++] = *s;
+	    if (*s == CSI)
+	    {
+		/* Turn CSI into K_CSI. */
+		inbuf[inbufcount++] = KS_EXTRA;
+		inbuf[inbufcount++] = (int)KE_CSI;
+	    }
+	}
 	vim_free(tmpbuf);
+    }
 }
 #endif
 
diff --git a/src/version.c b/src/version.c
index d5c1b28e9e..d7ed35dd7c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,12 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1477,
+/**/
+    1476,
+/**/
+    1475,
 /**/
     1474,
 /**/
diff --git a/src/window.c b/src/window.c
index f8816913b4..3b2846142d 100644
--- a/src/window.c
+++ b/src/window.c
@@ -3901,8 +3901,8 @@ leave_tabpage(
 enter_tabpage(
     tabpage_T	*tp,
     buf_T	*old_curbuf UNUSED,
-    int		trigger_enter_autocmds UNUSED,
-    int		trigger_leave_autocmds UNUSED)
+    int		trigger_enter_autocmds,
+    int		trigger_leave_autocmds)
 {
     int		old_off = tp->tp_firstwin->w_winrow;
     win_T	*next_prevwin = tp->tp_prevwin;