Issue #10281: nntplib now returns None for absent fields in the OVER/XOVER
response, instead of raising an exception.
diff --git a/Lib/nntplib.py b/Lib/nntplib.py
index b067d6b..fde339a 100644
--- a/Lib/nntplib.py
+++ b/Lib/nntplib.py
@@ -205,11 +205,12 @@
is_metadata = field_name.startswith(':')
if i >= n_defaults and not is_metadata:
# Non-default header names are included in full in the response
- h = field_name + ":"
- if token[:len(h)].lower() != h:
+ # (unless the field is totally empty)
+ h = field_name + ": "
+ if token and token[:len(h)].lower() != h:
raise NNTPDataError("OVER/XOVER response doesn't include "
"names of additional headers")
- token = token[len(h):].lstrip(" ")
+ token = token[len(h):] if token else None
fields[fmt[i]] = token
overview.append((article_number, fields))
return overview