[issue5006] Duplicate UTF-16 BOM if a file is open in append mode

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

One possible solution would be to call tell() in the TextIOWrapper
constructor, and then decoder.setstate((b"", 0)) if the current pos is >0.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5006>
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