[PATCH v5 5/7] emacs/show: Make the insertion of part headers overridable.
Mark Walters
markwalters1009 at gmail.com
Sun Feb 14 10:39:57 PST 2016
From: David Edmondson <dme at dme.org>
This allows callers of notmuch-show-insert-bodypart to use a `let'
binding to override the default function for specifying when part
headers should be inserted.
---
emacs/notmuch-show.el | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index f0bbff0..5654d11 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -943,8 +943,15 @@ will return nil if the CID is unknown or cannot be retrieved."
"text/x-diff")
content-type)))
+;; The following variable can be overridden by let bindings.
+(defvar notmuch-show-insert-header-p-function 'notmuch-show-insert-header-p
+ "Specify which function decides which part headers get inserted.
+
+The function should take two parameters, PART and HIDE, and
+should return non-NIL if a header button should be inserted for
+this part.")
+
(defun notmuch-show-insert-header-p (part hide)
- "Return non-NIL if a header button should be inserted for this part."
;; Show all part buttons except for the first part if it is text/plain.
(let ((mime-type (notmuch-show-mime-type part)))
(not (and (string= mime-type "text/plain")
@@ -964,7 +971,9 @@ is t, hide the part initially and show the button."
(> notmuch-show-max-text-part-size 0)
(> (length (plist-get part :content)) notmuch-show-max-text-part-size)))
(beg (point))
- (button (when (notmuch-show-insert-header-p part hide)
+ ;; This default header-p function omits the part button for
+ ;; the first (or only) part if this is text/plain.
+ (button (when (funcall notmuch-show-insert-header-p-function part hide)
(notmuch-show-insert-part-header nth mime-type content-type (plist-get part :filename))))
;; Hide the part initially if HIDE is t, or if it is too long
;; and we have a button to allow toggling.
--
2.1.4
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