caption list exclustion syntax

"hypersam.tw-/[email protected] [power-pro]" <[email protected]> 31 Dec 2017 13:04:07 +0000

Newsgroups	gmane.comp.windows.power-pro
Message-ID	<[email protected]>

In caption list, I want to match "A and (not B)". So I write A,&,~B, but it is not working? Where do I go wrong?

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