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notmuch.el: Make notmuch-search scroll commands move to first/last message.

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If there's nothing to scroll but we're not yet on the first or last
message then move point to that message.
This commit is contained in:
Carl Worth 2009-11-04 14:38:49 -08:00
parent eacd1ac41e
commit c6aae1561a
1 changed files with 25 additions and 3 deletions
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28
notmuch.el
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@ -478,7 +478,7 @@ thread from that buffer can be show when done with this one)."
(defvar notmuch-search-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "a" 'notmuch-search-archive-thread)
(define-key map "b" 'scroll-down)
(define-key map "b" 'notmuch-search-scroll-down)
(define-key map "f" 'notmuch-search-filter)
(define-key map "n" 'next-line)
(define-key map "p" 'previous-line)
@ -493,12 +493,34 @@ thread from that buffer can be show when done with this one)."
(define-key map ">" 'notmuch-search-goto-last-thread)
(define-key map "=" 'notmuch-search-refresh-view)
(define-key map "\M->" 'notmuch-search-goto-last-thread)
(define-key map " " 'scroll-up)
(define-key map (kbd "<DEL>") 'scroll-down)
(define-key map " " 'notmuch-search-scroll-up)
(define-key map (kbd "<DEL>") 'notmuch-search-scroll-down)
map)
"Keymap for \"notmuch search\" buffers.")
(fset 'notmuch-search-mode-map notmuch-search-mode-map)
(defun notmuch-search-scroll-up ()
"Scroll up, moving point to last message in thread if at end."
(interactive)
(condition-case nil
(scroll-up nil)
((end-of-buffer) (notmuch-search-goto-last-thread))))
(defun notmuch-search-scroll-down ()
"Scroll down, moving point to first message in thread if at beginning."
(interactive)
; I don't know why scroll-down doesn't signal beginning-of-buffer
; the way that scroll-up signals end-of-buffer, but c'est la vie.
;
; So instead of trapping a signal we instead check whether the
; window begins on the first line of the buffer and if so, move
; directly to that position. (We have to count lines since the
; window-start position is not the same as point-min due to the
; invisible thread-ID characters on the first line.
(if (equal (count-lines (point-min) (window-start)) 1)
(goto-char (window-start))
(scroll-down nil)))
(defun notmuch-search-goto-last-thread (&optional arg)
"Move point to the last thread in the buffer."
(interactive "^P")