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using some 8-bit character sets to messages.

This module provides an interface to encode and decode both headers and bodies
with Base64 encoding.

RFC 2045 defines a method for including character set information in an
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in To:, From:, Cc:, etc. fields, as well as Subject: lines.

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    Each line of the header will be terminated in the value of eol, which
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    The resulting string will be in the form:

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    This function does not parse a full MIME header value encoded with
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