diff --git a/7.4.164 b/7.4.164
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+To: vim_dev@googlegroups.com
+Subject: Patch 7.4.164
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.4.164 (after 7.4.163)
+Problem:    Problem with event handling on Windows 8.
+Solution:   Ignore duplicate WINDOW_BUFFER_SIZE_EVENTs. (Nobuhiro Takasaki)
+Files:	    src/os_win32.c
+
+
+*** ../vim-7.4.163/src/os_win32.c	2014-02-05 13:36:50.846082213 +0100
+--- src/os_win32.c	2014-02-05 14:01:13.350104623 +0100
+***************
+*** 253,258 ****
+--- 253,261 ----
+      static DWORD s_dwIndex = 0;
+      static DWORD s_dwMax = 0;
+      DWORD dwEvents;
++     int head;
++     int tail;
++     int i;
+  
+      if (!win8_or_later)
+      {
+***************
+*** 274,280 ****
+--- 277,305 ----
+  	    *lpEvents = 0;
+  	    return TRUE;
+  	}
++ 
++ 	if (s_dwMax > 1)
++ 	{
++ 	    head = 0;
++ 	    tail = s_dwMax - 1;
++ 	    while (head != tail)
++ 	    {
++ 		if (s_irCache[head].EventType == WINDOW_BUFFER_SIZE_EVENT
++ 			&& s_irCache[head + 1].EventType
++ 						  == WINDOW_BUFFER_SIZE_EVENT)
++ 		{
++ 		    /* Remove duplicate event to avoid flicker. */
++ 		    for (i = head; i < tail; ++i)
++ 			s_irCache[i] = s_irCache[i + 1];
++ 		    --tail;
++ 		    continue;
++ 		}
++ 		head++;
++ 	    }
++ 	    s_dwMax = tail + 1;
++ 	}
+      }
++ 
+      *lpBuffer = s_irCache[s_dwIndex];
+      if (nLength != -1 && ++s_dwIndex >= s_dwMax)
+  	s_dwMax = 0;
+*** ../vim-7.4.163/src/version.c	2014-02-05 13:36:50.850082213 +0100
+--- src/version.c	2014-02-05 13:54:15.570098222 +0100
+***************
+*** 740,741 ****
+--- 740,743 ----
+  {   /* Add new patch number below this line */
++ /**/
++     164,
+  /**/
+
+-- 
+XML is a nice language for computers.  Not for humans.
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
+///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\  an exciting new programming language -- http://www.Zimbu.org        ///
+ \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///