commit 9363a65b2ceb1b9cb9b14a1711d7d2310673a0a0
author Benjamin Peterson <benjamin@python.org> Thu Mar 05 00:42:09 2009 +0000
committer Benjamin Peterson <benjamin@python.org> Thu Mar 05 00:42:09 2009 +0000
tree a399a6f732273464722a00629b70ad5794d8ebb8
parent 03cfa7365d7fc7c1020aab3845e49356f961f767

fix #4862 in _pyio: reset the decoder on seek(0)

Lib/_pyio.py

diff --git a/Lib/_pyio.py b/Lib/_pyio.py
index 5f2e400..a2ee952 100644
--- a/Lib/_pyio.py
+++ b/Lib/_pyio.py
@@ -1667,7 +1667,9 @@
         self._snapshot = None
 
         # Restore the decoder to its state from the safe start point.
-        if self._decoder or dec_flags or chars_to_skip:
+        if cookie == 0 and self._decoder:
+            self._decoder.reset()
+        elif self._decoder or dec_flags or chars_to_skip:
             self._decoder = self._decoder or self._get_decoder()
             self._decoder.setstate((b'', dec_flags))
             self._snapshot = (dec_flags, b'')