From f1eb4870f65c9272004c494c1a85558f3af292d9 Mon Sep 17 00:00:00 2001
From: JSDurand <mmemmew@gmail.com>
Date: Fri, 24 Dec 2021 17:20:59 +0800
Subject: gnus: choose an identity

* gnus-conf.el (mml-secure-openpgp-encrypt-to-self): Encrypt to
  myself.

(gnus-ignored-from-addresses): New mail address.

(gnus-parameters): Random change.

(durand-identities, durand-choose-identity, message-mode-map): I have
multiple identities now, so it is important to choose the correct
identity to use.
---
 gnus-conf.el | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 70 insertions(+), 3 deletions(-)

diff --git a/gnus-conf.el b/gnus-conf.el
index 7d0fa23..e9d6d9a 100644
--- a/gnus-conf.el
+++ b/gnus-conf.el
@@ -66,7 +66,9 @@
 
 ;;; To be able to see the encrypted mails sent by me.
 
-(setq mml-secure-openpgp-encrypt-to-self t)
+(setq mml-secure-openpgp-encrypt-to-self
+      (list "mmemmew@gmail.com"
+            "durand@jsdurand.xyz"))
 
 ;;; mail aliases
 
@@ -89,7 +91,10 @@
 
 ;;; user settings
 
-(setq gnus-ignored-from-addresses "mmemmew@gmail.com")
+(setq gnus-ignored-from-addresses
+      (list
+       "mmemmew@gmail.com"
+       "durand@jsdurand.xyz"))
 
 (setq send-mail-function #'smtpmail-send-it)
 (setq smtpmail-smtp-user "durand@jsdurand.xyz")
@@ -109,7 +114,7 @@
 (setq gnus-parameters
       `((".*"
          (posting-style
-          (gcc "nnmaildir+private:Sent")))))
+          (gcc "nnmaildir+gmail:Sent")))))
 
 (require 'gnus-msg)
 
@@ -132,6 +137,8 @@
 
 ;;; Multiple SMTP servers
 
+;;;; Set the correct server on sending mails
+
 (defvar durand-smtp-servers nil
   "The list of SMTP servers that I use.
 Each server is a list of the form:
@@ -200,6 +207,66 @@ USERNAME is used to look up passwords in ~/.authinfo.gpg.")
 (define-key message-mode-map (vector 3 3)
   #'durand-set-smtp-server-message-send-and-exit)
 
+;;;; Choose the correct identity when entering message buffers
+
+(defvar durand-identities
+  (list
+   (list "mmew" "Durand <mmemmew@gmail.com>" "nnmaildir+gmail:Sent")
+   (list "durand"
+         "Durand <durand@jsdurand.xyz>"
+         "nnmaildir+durand:sent" "Durand"))
+  "The list of identities to choose.
+Each element is of the form
+
+NICK ADDR GCC [SIG]
+
+NICK: The name to type to choose this identity.
+
+ADDR: The string that appears as the FROM field of the message.
+
+GCC: The string that appears as the GCC field of the message.
+
+SIG: Optionally include a signature.")
+
+(defun durand-choose-identity (&optional arg)
+  "Choose an identity when entering `message-mode'.
+If ARG is non-nil, ask which identity to use.  Otherwise use the
+identity named durand."
+  (interactive "P")
+  (let* (choice
+         (identity-to-use
+          (cond
+           (arg
+            (setq choice
+                  (completing-read
+                   "Choose an identity: " durand-identities nil t))
+            (alist-get choice durand-identities nil nil #'string=))
+           ((alist-get
+             (setq choice "durand")
+             durand-identities nil nil #'string=))
+           ((user-error "No identity crisis!"))))
+         (from (car identity-to-use))
+         (gcc (cadr identity-to-use))
+         (sig (caddr identity-to-use)))
+    (message-remove-header "From")
+    (message-remove-header "Gcc")
+    (message-add-header (format "From: %s" from))
+    (message-add-header (format "Gcc: %s" gcc))
+    ;; deal with signature
+    (cond
+     (sig
+      (save-excursion
+        (goto-char (point-max))
+        (cond
+         ((re-search-backward "^-- $")
+          ;; found a pre-existing signature; let me update this.
+          (forward-line 1)
+          (delete-region (point) (point-max))))
+        (insert sig))))
+    (message "Chose %s as the identity now!" choice)))
+
+(define-key message-mode-map (vector 3 ?i) #'durand-choose-identity)
+
 ;;; Call me an expert.
 
 (setq gnus-expert-user t)
-- 
cgit v1.2.3-18-g5258