updated for version 7.4.457

Problem:    Using getchar() in an expression mapping may result in
            K_CURSORHOLD, which can't be recognized.
Solution:   Add the <CursorHold> key.  (Hirohito Higashi)

src/misc2.c

@@ -2471,6 +2471,7 @@ static struct key_name_entry
     {K_SNR,		(char_u *)"SNR"},
 #endif
     {K_PLUG,		(char_u *)"Plug"},
+    {K_CURSORHOLD,	(char_u *)"CursorHold"},
     {0,			NULL}
 };
 

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    457,
 /**/
     456,
 /**/