diff --git a/7.3.683 b/7.3.683
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+To: vim_dev@googlegroups.com
+Subject: Patch 7.3.683
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.3.683
+Problem:    ":python" may crash when vimbindeval() returns None.
+Solution:   Check for v_string to be NULL. (Yukihiro Nakadaira)
+Files:	    src/if_py_both.h
+
+
+*** ../vim-7.3.682/src/if_py_both.h	2012-09-21 14:00:05.000000000 +0200
+--- src/if_py_both.h	2012-10-05 21:05:06.000000000 +0200
+***************
+*** 351,357 ****
+  
+      if (our_tv->v_type == VAR_STRING)
+      {
+! 	result = Py_BuildValue("s", our_tv->vval.v_string);
+      }
+      else if (our_tv->v_type == VAR_NUMBER)
+      {
+--- 351,358 ----
+  
+      if (our_tv->v_type == VAR_STRING)
+      {
+! 	result = Py_BuildValue("s", our_tv->vval.v_string == NULL
+! 					? "" : (char *)our_tv->vval.v_string);
+      }
+      else if (our_tv->v_type == VAR_NUMBER)
+      {
+***************
+*** 2751,2757 ****
+      switch (tv->v_type)
+      {
+  	case VAR_STRING:
+! 	    return PyBytes_FromString((char *) tv->vval.v_string);
+  	case VAR_NUMBER:
+  	    return PyLong_FromLong((long) tv->vval.v_number);
+  #ifdef FEAT_FLOAT
+--- 2752,2759 ----
+      switch (tv->v_type)
+      {
+  	case VAR_STRING:
+! 	    return PyBytes_FromString(tv->vval.v_string == NULL
+! 					    ? "" : (char *)tv->vval.v_string);
+  	case VAR_NUMBER:
+  	    return PyLong_FromLong((long) tv->vval.v_number);
+  #ifdef FEAT_FLOAT
+***************
+*** 2763,2769 ****
+  	case VAR_DICT:
+  	    return DictionaryNew(tv->vval.v_dict);
+  	case VAR_FUNC:
+! 	    return FunctionNew(tv->vval.v_string);
+  	case VAR_UNKNOWN:
+  	    Py_INCREF(Py_None);
+  	    return Py_None;
+--- 2765,2772 ----
+  	case VAR_DICT:
+  	    return DictionaryNew(tv->vval.v_dict);
+  	case VAR_FUNC:
+! 	    return FunctionNew(tv->vval.v_string == NULL
+! 					  ? (char_u *)"" : tv->vval.v_string);
+  	case VAR_UNKNOWN:
+  	    Py_INCREF(Py_None);
+  	    return Py_None;
+*** ../vim-7.3.682/src/version.c	2012-10-04 22:38:32.000000000 +0200
+--- src/version.c	2012-10-05 21:04:19.000000000 +0200
+***************
+*** 721,722 ****
+--- 721,724 ----
+  {   /* Add new patch number below this line */
++ /**/
++     683,
+  /**/
+
+-- 
+SIGIRO -- irony detected (iron core dumped)
+
+ /// 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    ///