delta encoding of upper/lower/title makes a glorious return (#12736)
diff --git a/Tools/unicode/makeunicodedata.py b/Tools/unicode/makeunicodedata.py
index 0795d9e..17edc3c 100644
--- a/Tools/unicode/makeunicodedata.py
+++ b/Tools/unicode/makeunicodedata.py
@@ -443,6 +443,13 @@
if sc is None:
if upper == lower == title:
upper = lower = title = 0
+ else:
+ upper = upper - char
+ lower = lower - char
+ title = title - char
+ assert (abs(upper) <= 2147483647 and
+ abs(lower) <= 2147483647 and
+ abs(title) <= 2147483647)
else:
# This happens either when some character maps to more than one
# character in uppercase, lowercase, or titlecase or the