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Gnus developers authored
gnus-art.el (gnus-request-article-this-buffer): Use existing function `gnus-refer-article-methods'. auth-source.el: Require EPA and EPG. (auth-source-passphrase-alist): New variable. (auth-source-passphrase-callback-function, auth-source-token-passphrase-callback-function): Callbacks for the netrc field encryption (GPG tokens). (auth-source-epa-extract-gpg-token, auth-source-epa-make-gpg-token): Symmetric encryption and decryption of the netrc GPG tokens. (auth-source-netrc-normalize): Use them, simplifying the closure.
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