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emacs/show: Accommodate the lack of part header buttons

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Various pieces of code assumed (reasonably) that part header buttons
are present. Modify them to avoid problems if no part headers were
inserted.
This commit is contained in:
David Edmondson 2016-02-20 18:24:37 +00:00 committed by David Bremner
parent 92a1f9ba17
commit c802d12a1e
1 changed files with 48 additions and 40 deletions
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32
emacs/notmuch-show.el
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@ -501,8 +501,9 @@ message at DEPTH in the current thread."
(defun notmuch-show-toggle-part-invisibility (&optional button)
(interactive)
(let* ((button (or button (button-at (point))))
(overlay (button-get button 'overlay))
(let ((button (or button (button-at (point)))))
(when button
(let ((overlay (button-get button 'overlay))
(lazy-part (button-get button :notmuch-lazy-part)))
;; We have a part to toggle if there is an overlay or if there is a lazy part.
;; If neither is present we cannot toggle the part so we just return nil.
@ -530,7 +531,7 @@ message at DEPTH in the current thread."
(notmuch-show-lazy-part lazy-part button))
;; else there must be an overlay.
(overlay-put overlay 'invisible (not show))
t)))))
t)))))))
;; Part content ID handling
@ -639,14 +640,17 @@ will return nil if the CID is unknown or cannot be retrieved."
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
(when 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."))
;; If we're not adding the signature status, tell the user how
;; they can get it.
(when button
(button-put button 'help-echo "Set notmuch-crypto-process-mime to process cryptographic MIME parts.")))
(let ((inner-parts (plist-get part :content))
(start (point)))
@ -660,17 +664,20 @@ will return nil if the CID is unknown or cannot be retrieved."
t)
(defun notmuch-show-insert-part-multipart/encrypted (msg part content-type nth depth button)
(button-put button 'face 'notmuch-crypto-part-header)
;; add encryption status button if encstatus specified
(when button
(button-put button 'face 'notmuch-crypto-part-header))
;; Add encryption status button if encryption status is specified.
(if (plist-member part :encstatus)
(let ((encstatus (car (plist-get part :encstatus))))
(notmuch-crypto-insert-encstatus-button encstatus)
;; add signature status button if sigstatus specified
;; Add signature status button if signature status is
;; specified.
(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 encstatus, tell the user how they can get it
;; If we're not adding the encryption 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))
@ -980,8 +987,9 @@ useful for quoting in replies)."
(if show-part
(notmuch-show-insert-bodypart-internal msg part mime-type nth depth button)
(when button
(button-put button :notmuch-lazy-part
(list msg part mime-type nth depth button)))
(list msg part mime-type nth depth button))))
;; Some of the body part handlers leave point somewhere up in the
;; part, so we make sure that we're down at the end.