Make ELLIPSIS a separate token. This makes it a syntax error to write ". . ." for Ellipsis.
diff --git a/Include/token.h b/Include/token.h
index cdbc965..772a85e 100644
--- a/Include/token.h
+++ b/Include/token.h
@@ -59,10 +59,11 @@
#define DOUBLESLASHEQUAL 49
#define AT 50
#define RARROW 51
+#define ELLIPSIS 52
/* Don't forget to update the table _PyParser_TokenNames in tokenizer.c! */
-#define OP 52
-#define ERRORTOKEN 53
-#define N_TOKENS 54
+#define OP 53
+#define ERRORTOKEN 54
+#define N_TOKENS 55
/* Special definitions for cooperation with parser */