1 files changed, 16 insertions, 0 deletions
diff --git a/rpython/rlib/unicodedata/unicodedb_3_2_0.py b/rpython/rlib/unicodedata/unicodedb_3_2_0.py
index 337c0dde19..33827c6f35 100644
--- a/rpython/rlib/unicodedata/unicodedb_3_2_0.py
+++ b/rpython/rlib/unicodedata/unicodedb_3_2_0.py
@@ -19457,6 +19457,10 @@ _special_casing_corrected = {
 }
 
 def toupper(code):
+    if code < 128:
+        if ord('a') <= code <= ord('z'):
+            return code - 32
+        return code
     try:
         return _toupper[code]
     except KeyError:
@@ -19466,6 +19470,10 @@ def toupper(code):
             return code
 
 def tolower(code):
+    if code < 128:
+        if ord('A') <= code <= ord('Z'):
+            return code + 32
+        return code
     try:
         return _tolower[code]
     except KeyError:
@@ -19484,6 +19492,10 @@ def totitle(code):
             return code
 
 def toupper_full(code):
+    if code < 128:
+        if ord('a') <= code <= ord('z'):
+            return [code - 32]
+        return [code]
     try:
         return _special_casing[code][2]
     except KeyError:
@@ -19495,6 +19507,10 @@ def toupper_full(code):
     return [toupper(code)]
 
 def tolower_full(code):
+    if code < 128:
+        if ord('A') <= code <= ord('Z'):
+            return [code + 32]
+        return [code]
     try:
         return _special_casing[code][0]
     except KeyError: