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README for SWISH++ encodings
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The files in this directory handle the values for the Content-Transfer-Encoding
header (RFC 2045 section 6) used by the mail indexer, to wit: quoted-printable
and base64.

The values 7bit and 8bit are easily handled internally as ASCII and ISO 8859-1,
respectively; the values binary, and x-token are not handled at all.

The reason these files are here in this subdirectory rather than in mod/mail is
because, some day, there may be a way to specify non-mail files that are, say,
base-64 encoded to be decoded.  If this ever happens, then additional non-mail
decoders could be added to this subdirectory.
