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emacs: Make message-summary button extend to very beginning of message.

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There's no visible change here---we're just making the button extend
through the invisible portions of the message before the
message-summary line. The reason this is important is that it's easy
for the user to position point at the (invisible) `point-min', so we
want to ensure that there's a valid button there.
This commit is contained in:
Carl Worth 2009-12-03 11:34:01 -08:00
parent 8e126fe1fb
commit 11490cfebe
1 changed files with 15 additions and 4 deletions
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19
notmuch.el
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@ -729,7 +729,18 @@ which this thread was originally shown."
(overlay-put (make-overlay (point) (re-search-forward ".*$"))
'face 'message-header-other)))))))
(defun notmuch-show-markup-header (depth)
(defun notmuch-show-markup-header (message-begin depth)
"Buttonize and decorate faces in a message header.
MESSAGE-BEGIN is the position of the absolute first character in
the message (including all delimiters that will end up being
invisible etc.). This is to allow a button to reliably extend to
the beginning of the message even if point is positioned at an
invisible character (such as the beginning of the buffer).
DEPTH specifies the depth at which this message appears in the
tree of the current thread, (the top-level messages have depth 0
and each reply increases depth by 1)."
(re-search-forward notmuch-show-header-begin-regexp)
(forward-line)
(let ((beg (point-marker))
@ -742,7 +753,7 @@ which this thread was originally shown."
(let ((end (point-marker)))
(indent-rigidly beg end depth)
(goto-char beg)
(setq btn (make-button (line-beginning-position) summary-end :type 'notmuch-button-body-toggle-type))
(setq btn (make-button message-begin summary-end :type 'notmuch-button-body-toggle-type))
(forward-line)
(add-to-invisibility-spec invis-spec)
(overlay-put (make-overlay subject-end end)
@ -766,11 +777,11 @@ which this thread was originally shown."
(defun notmuch-show-markup-message ()
(if (re-search-forward notmuch-show-message-begin-regexp nil t)
(progn
(let ((message-begin (match-beginning 0)))
(re-search-forward notmuch-show-depth-regexp)
(let ((depth (string-to-number (buffer-substring (match-beginning 1) (match-end 1))))
(btn nil))
(setq btn (notmuch-show-markup-header depth))
(setq btn (notmuch-show-markup-header message-begin depth))
(notmuch-show-markup-body depth btn)))
(goto-char (point-max))))