[issue12116] io.Buffer*.seek() doesn't seek if "seeking leaves us inside the current buffer"

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

Note: _pyio.BufferedReader(), _pyio.BufferedWriter(), _pyio.BufferedRandom() don't use this optimization. They might be patched too.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12116>
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