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README for SWISH++ charsets
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The files in this directory handle some values for the charset parameter of the
Content-Type header (RFC 2045 section 5) used by the mail indexer, to wit: utf7
and utf8.

The values us-ascii and iso8859-1 are easily handled internally; other values
are currently 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 in,
say, the UTF-8 character set to be decoded.  If this ever happens, then
additional non-mail decoders could be added to this subdirectory, e.g., UTF-16.
