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emacs: Elide the display of repeated subjects in thread display mode.

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Collapsed messages do not show a "Subject:" line if the subject is the
same as that of the previous message.
This commit is contained in:
David Edmondson 2010-11-08 10:44:08 +00:00 committed by Carl Worth
parent 42f1a13374
commit e6d31a5435
1 changed files with 24 additions and 10 deletions
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34
emacs/notmuch-show.el
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@ -381,17 +381,24 @@ current buffer, if possible."
(defun notmuch-show-make-symbol (type)
(make-symbol (concat "notmuch-show-" type)))
(defun notmuch-show-strip-re (string)
(replace-regexp-in-string "^\\([Rr]e: *\\)+" "" string))
(defvar notmuch-show-previous-subject "")
(make-variable-buffer-local 'notmuch-show-previous-subject)
(defun notmuch-show-insert-msg (msg depth)
"Insert the message MSG at depth DEPTH in the current thread."
(let ((headers (plist-get msg :headers))
;; Indentation causes the buffer offset of the start/end
;; points to move, so we must use markers.
message-start message-end
content-start content-end
headers-start headers-end
body-start body-end
(headers-invis-spec (notmuch-show-make-symbol "header"))
(message-invis-spec (notmuch-show-make-symbol "message")))
(let* ((headers (plist-get msg :headers))
;; Indentation causes the buffer offset of the start/end
;; points to move, so we must use markers.
message-start message-end
content-start content-end
headers-start headers-end
body-start body-end
(headers-invis-spec (notmuch-show-make-symbol "header"))
(message-invis-spec (notmuch-show-make-symbol "message"))
(bare-subject (notmuch-show-strip-re (plist-get headers :Subject))))
;; Set `buffer-invisibility-spec' to `nil' (a list), otherwise
;; removing items from `buffer-invisibility-spec' (which is what
@ -428,10 +435,17 @@ current buffer, if possible."
(insert "\n")
(save-excursion
(goto-char content-start)
(forward-line 1)
;; If the subject of this message is the same as that of the
;; previous message, don't display it when this message is
;; collapsed.
(when (not (string= notmuch-show-previous-subject
bare-subject))
(forward-line 1))
(setq headers-start (point-marker)))
(setq headers-end (point-marker))
(setq notmuch-show-previous-subject bare-subject)
(setq body-start (point-marker))
(notmuch-show-insert-body msg (plist-get msg :body) depth)
;; Ensure that the body ends with a newline.