Index: Objects/unicodectype.c
===================================================================
--- Objects/unicodectype.c	(revision 62744)
+++ Objects/unicodectype.c	(working copy)
@@ -21,6 +21,7 @@
 #define UPPER_MASK 0x80
 #define XID_START_MASK 0x100
 #define XID_CONTINUE_MASK 0x200
+#define HEX_ESCAPE_MASK 0x400
 
 typedef struct {
     const Py_UNICODE upper;
@@ -675,6 +676,17 @@
     return _PyUnicode_ToNumeric(ch) != -1.0;
 }
 
+/* Returns 1 for Unicode characters to be hex-escaped when repr()ed,
+   0 otherwise. */
+
+int _PyUnicode_IsHexEscaped(Py_UNICODE ch)
+{
+    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
+
+    return (ctype->flags & HEX_ESCAPE_MASK) != 0;
+}
+
+
 #ifndef WANT_WCTYPE_FUNCTIONS
 
 /* Returns 1 for Unicode characters having the bidirectional type