File: //opt/alt/python35/lib64/python3.5/encodings/__pycache__/utf_8_sig.cpython-35.pyc
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This work similar to UTF-8 with the following changes:
* On encoding/writing a UTF-8 encoded BOM will be prepended/written as the
first three bytes.
* On decoding/reading if the first three bytes are a UTF-8 encoded BOM, these
bytes will be skipped.
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