updated for version 7.3.632
Problem:    Cannot select beyond 222 columns with the mouse in xterm.
Solution:   Add support for SGR mouse tracking. (Hayaki Saito)
diff --git a/src/misc2.c b/src/misc2.c
index 43fec19..084d451 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -2433,6 +2433,9 @@
 #ifdef FEAT_MOUSE_URXVT
     {K_URXVT_MOUSE,	(char_u *)"UrxvtMouse"},
 #endif
+#ifdef FEAT_MOUSE_SGR
+    {K_SGR_MOUSE,	(char_u *)"SgrMouse"},
+#endif
     {K_LEFTMOUSE,	(char_u *)"LeftMouse"},
     {K_LEFTMOUSE_NM,	(char_u *)"LeftMouseNM"},
     {K_LEFTDRAG,	(char_u *)"LeftDrag"},