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mu4e-draft: add "{sign,encrypt}-signed-replies" to crypto options

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This scratches an itch of mine: being able to sign messages when they're replies
to signed messages.

Signed-off-by: Sergio Durigan Junior <sergiodj@sergiodj.net>
This commit is contained in:
Sergio Durigan Junior
2026-03-25 19:34:14 -04:00
committed by Seth Ladygo
parent 93a6e73940
commit f45dc9ddb7
1 changed files with 18 additions and 5 deletions
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23
mu4e/mu4e-draft.el
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@ -41,7 +41,7 @@
(declare-function mu4e "mu4e")
(defcustom mu4e-compose-crypto-policy
'(encrypt-encrypted-replies sign-encrypted-replies)
'(encrypt-encrypted-replies sign-encrypted-replies sign-signed-replies)
"Policy to control when messages will be signed/encrypted.
The value is a list which influence the way draft messages are
@ -59,6 +59,8 @@ created. Specifically, it might contain:
non-encrypted messages.
- `sign-encrypted-replies': Add a signature when responding
to encrypted messages.
- `sign-signed-replies': Add a signature when responding to
signed messages.
It should be noted that certain symbols have priorities over one
another. So `sign-all-messages' implies `sign-all-replies', which
@ -84,7 +86,11 @@ All `sign-*' options have a `encrypt-*' analogue."
(const :tag "Sign replies to encrypted messages"
sign-encrypted-replies)
(const :tag "Encrypt replies to encrypted messages"
encrypt-encrypted-replies))
encrypt-encrypted-replies)
(const :tag "Sign replies to signed messages"
sign-signed-replies)
(const :tag "Encrypt replies to signed messages"
encrypt-signed-replies))
:group 'mu4e-compose)
;;; Crypto
@ -93,6 +99,8 @@ All `sign-*' options have a `encrypt-*' analogue."
See `mu4e-compose-crypto-policy' for more details."
(let* ((encrypted-p
(and parent (memq 'encrypted (mu4e-message-field parent :flags))))
(signed-p
(and parent (memq 'signed (mu4e-message-field parent :flags))))
(encrypt
(or (memq 'encrypt-all-messages mu4e-compose-crypto-policy)
(and (memq 'encrypt-new-messages mu4e-compose-crypto-policy)
@ -105,9 +113,12 @@ See `mu4e-compose-crypto-policy' for more details."
(memq 'encrypt-all-replies mu4e-compose-crypto-policy))
(and (eq compose-type 'reply) (not encrypted-p) ;; plain replies
(memq 'encrypt-plain-replies mu4e-compose-crypto-policy))
(and (eq compose-type 'reply) encrypted-p
(and (eq compose-type 'reply) encrypted-p ;; encrypted replies
(memq 'encrypt-encrypted-replies
mu4e-compose-crypto-policy)))) ;; encrypted replies
mu4e-compose-crypto-policy))
(and (eq compose-type 'reply) signed-p ;; signed replies
(memq 'encrypt-signed-replies
mu4e-compose-crypto-policy))))
(sign
(or (memq 'sign-all-messages mu4e-compose-crypto-policy)
(and (eq compose-type 'new) ;; new messages
@ -121,7 +132,9 @@ See `mu4e-compose-crypto-policy' for more details."
(and (eq compose-type 'reply) (not encrypted-p) ;; plain replies
(memq 'sign-plain-replies mu4e-compose-crypto-policy))
(and (eq compose-type 'reply) encrypted-p ;; encrypted replies
(memq 'sign-encrypted-replies mu4e-compose-crypto-policy)))))
(memq 'sign-encrypted-replies mu4e-compose-crypto-policy))
(and (eq compose-type 'reply) signed-p ;; signed replies
(memq 'sign-signed-replies mu4e-compose-crypto-policy)))))
(cond ((and sign encrypt) (mml-secure-message-sign-encrypt))
(sign (mml-secure-message-sign))
(encrypt (mml-secure-message-encrypt)))))