After listening to bremner, dkg et al. from Heidelberg, I threw together a quick patch to see how we might indicate signature validity in the fringe. The intention is to prompt more discussion - this code is not ready to ship.
The patch is attached. The result looks something like:
http://dme.org/data/images/notmuch-signed-fringe.png
Thoughts?
diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 4dee34b..3d447af 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -646,25 +646,46 @@ will return nil if the CID is unknown or cannot be retrieved."
(indent-rigidly start (point) 1)))
t)
-(defun notmuch-show-insert-part-multipart/signed (msg part content-type nth depth button)
- (button-put button 'face 'notmuch-crypto-part-header)
- ;; add signature status button if sigstatus provided
- (if (plist-member part :sigstatus)
- (let* ((from (notmuch-show-get-header :From msg))
- (sigstatus (car (plist-get part :sigstatus))))
- (notmuch-crypto-insert-sigstatus-button sigstatus from))
- ;; if we're not adding sigstatus, tell the user how they can get it
- (button-put button 'help-echo "Set notmuch-crypto-process-mime to process cryptographic MIME parts."))
+;; None of the existing fringe bitmaps are empty.
+(define-fringe-bitmap 'notmuch-show--fringe-empty '[])
- (let ((inner-parts (plist-get part :content))
- (start (point)))
- ;; Show all of the parts.
- (mapc (lambda (inner-part)
- (notmuch-show-insert-bodypart msg inner-part depth))
- inner-parts)
+(defun notmuch-show--sigstatus-to-fringe-string (status)
+ (let ((good-bad-ugly (plist-get status :status)))
+ (cond
+ ((string= good-bad-ugly "good")
+ (propertize "dummy" 'display
+ '(left-fringe notmuch-show--fringe-empty notmuch-crypto-signature-good)))
+ ;; XXX dme: insert more here.
+ (t nil))))
- (when notmuch-show-indent-multipart
- (indent-rigidly start (point) 1)))
+(defun notmuch-show-insert-part-multipart/signed (msg part content-type nth depth button)
+ (let ((start-of-signed (point)))
+ (button-put button 'face 'notmuch-crypto-part-header)
+
+ (let ((sigstatus (car (plist-get part :sigstatus)))
+ (from (notmuch-show-get-header :From msg)))
+ ;; Add signature status button if status is provided.
+ (if sigstatus
+ (notmuch-crypto-insert-sigstatus-button sigstatus from)
+ ;; If we're not adding the status, tell the user how they can
+ ;; get it.
+ (button-put button 'help-echo "Set notmuch-crypto-process-mime to process cryptographic MIME parts."))
+
+ (let ((inner-parts (plist-get part :content))
+ (start (point))
+ (fringe-string (notmuch-show--sigstatus-to-fringe-string sigstatus)))
+ ;; Show all of the parts.
+ (mapc (lambda (inner-part)
+ (notmuch-show-insert-bodypart msg inner-part depth))
+ inner-parts)
+
+ (when notmuch-show-indent-multipart
+ (indent-rigidly start (point) 1))
+
+ (when fringe-string
+ (replace-regexp "^" fringe-string nil start-of-signed (point))))
+ )
+ )
t)
(defun notmuch-show-insert-part-multipart/encrypted (msg part content-type nth depth button)
signature.asc
Description: PGP signature
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