Das sind MIME-encoded Words laut RFC 1522 2047:
=?UTF-8?B?5Pb8LmV4ZQ==?=
=?KOI-8?B?YW5uYWtvdXJuaWtvdmEuc2Ny?=
=?ISO-8859-15?B?TfxsbGVyTWVpZXJTY2h1bHplLlBQVA==?=
Codiert werden die z.B. so:
echo "äöü.exe" |
perl -MMIME::Words=:all -ne 'chomp;$_=encode_mimeword($_,B,"utf-8");print"$_\n"'
oder defensiver:
echo "äöü.exe" |
perl -MMIME::Words=:all -pe 'chomp;$_=encode_mimewords($_);$_.="\n"'
Decodiert werden sie so:
echo "=?UTF-8?B?5Pb8LmV4ZQ==?=" |
perl -MMIME::Words=:all -pe '$_=decode_mimewords($_)'
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