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Small speed-up to `org-overview'

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* lisp/org.el (org-overview): Use direct Org function instead of
Outline's for a slight speed-up.
This commit is contained in:
Nicolas Goaziou 2020-05-10 02:19:43 +02:00
parent c744d3cf4c
commit f1c0f34772
1 changed files with 13 additions and 12 deletions
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25
lisp/org.el
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@ -6538,20 +6538,21 @@ With a numeric prefix, show all headlines up to that level."
(org-end-of-subtree)))))))
(defun org-overview ()
"Switch to overview mode, showing only top-level headlines.
This shows all headlines with a level equal or greater than the level
of the first headline in the buffer. This is important, because if the
first headline is not level one, then (hide-sublevels 1) gives confusing
results."
"Switch to overview mode, showing only top-level headlines."
(interactive)
(org-show-all '(headings))
(save-excursion
(let ((level
(save-excursion
(goto-char (point-min))
(when (re-search-forward org-outline-regexp-bol nil t)
(goto-char (match-beginning 0))
(funcall outline-level)))))
(and level (outline-hide-sublevels level)))))
(goto-char (point-min))
(when (re-search-forward org-outline-regexp-bol nil t)
(let* ((last (line-end-position))
(level (- (match-end 0) (match-beginning 0) 1))
(regexp (format "^\\*\\{1,%d\\} " level)))
(while (re-search-forward regexp nil :move)
(org-flag-region last (line-end-position 0) t 'outline)
(setq last (line-end-position))
(setq level (- (match-end 0) (match-beginning 0) 1))
(setq regexp (format "^\\*\\{1,%d\\} " level)))
(org-flag-region last (point) t 'outline)))))
(defun org-content (&optional arg)
"Show all headlines in the buffer, like a table of contents.