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-rw-r--r--Lib/codecs.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/Lib/codecs.py b/Lib/codecs.py
index 06cec17..6d8d554 100644
--- a/Lib/codecs.py
+++ b/Lib/codecs.py
@@ -259,7 +259,9 @@ class IncrementalDecoder(object):
def getstate(self):
"""
Return the current state of the decoder. This must be a
- (buffered_input, additional_state_info) tuple.
+ (buffered_input, additional_state_info) tuple. By convention,
+ additional_state_info should represent the state of the decoder
+ WITHOUT yet having processed the contents of buffered_input.
"""
return (b"", 0)