when checking attachments, I want to sort out those eMails, which
have no other but base64 encoding. My 1st attempt is this:
* ! ^content-transfer-encoding: *[^ b][^a][^s][^e]
However, this matches on "content-transfer-encoding: binary", too.
But I don't see why. Either explanation why it matches or better/
optimal solution to the original problem will be very appreciated.
© Rado S. -- You must provide YOUR effort for your goal!
Even if it seems insignificant, in fact EVERY effort counts
for a shared task, at least to show your deserving attitude.
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