Make error message less misleading for u"a..b".encode("idna").
diff --git a/Lib/encodings/idna.py b/Lib/encodings/idna.py
index 1f601c9..1aa4e96 100644
--- a/Lib/encodings/idna.py
+++ b/Lib/encodings/idna.py
@@ -70,7 +70,7 @@
# Skip to step 8.
if 0 < len(label) < 64:
return label
- raise UnicodeError("label too long")
+ raise UnicodeError("label empty or too long")
# Step 2: nameprep
label = nameprep(label)
@@ -85,7 +85,7 @@
# Skip to step 8.
if 0 < len(label) < 64:
return label
- raise UnicodeError("label too long")
+ raise UnicodeError("label empty or too long")
# Step 5: Check ACE prefix
if label.startswith(uace_prefix):
@@ -100,7 +100,7 @@
# Step 8: Check size
if 0 < len(label) < 64:
return label
- raise UnicodeError("label too long")
+ raise UnicodeError("label empty or too long")
def ToUnicode(label):
# Step 1: Check for ASCII