emacs: Add support for PGP/MIME verification/decryption

A new emacs configuration variable "notmuch-crypto-process-mime"
controls the processing of PGP/MIME signatures and encrypted parts.
When this is set true, notmuch-query will use the notmuch show
--decrypt flag to decrypt encrypted messages and/or calculate the
sigstatus of signed messages.  If sigstatus is available, notmuch-show
will place a specially color-coded header at the begining of the
signed message.

Also included is the ability to switch decryption/verification on/off
on the fly, which is bound to M-RET in notmuch-search-mode.

1 files changed, 5 insertions, 2 deletions

diff --git a/emacs/notmuch-query.el b/emacs/notmuch-query.el
index 921f6246..d66baeab 100644
--- a/emacs/notmuch-query.el
+++ b/emacs/notmuch-query.el
@@ -22,17 +22,20 @@
 (require 'notmuch-lib)
 (require 'json)
 
-(defun notmuch-query-get-threads (search-terms &rest options)
+(defun notmuch-query-get-threads (search-terms)
   "Return a list of threads of messages matching SEARCH-TERMS.
 
 A thread is a forest or list of trees. A tree is a two element
 list where the first element is a message, and the second element
 is a possibly empty forest of replies.
 "
-  (let  ((args (append '("show" "--format=json") search-terms))
+  (let  ((args '("show" "--format=json"))
 	 (json-object-type 'plist)
 	 (json-array-type 'list)
 	 (json-false 'nil))
+    (if notmuch-show-process-crypto
+	(setq args (append args '("--decrypt"))))
+    (setq args (append args search-terms))
     (with-temp-buffer
       (progn
 	(apply 'call-process (append (list notmuch-command nil (list t nil) nil) args))