From: David Edmondson <dme@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