blob: 440db216613372d4a620f35e2611ada59cfd7f8e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
(defun km/outline--parent-levels (n)
"Return list of parent levels.
4 -> (1 2 3)
1 -> nil"
(unless (> n 0)
(user-error "N must be positive"))
(let (parents)
(while (/= n 1)
(setq n (1- n))
(push n parents))
parents))
(defun km/outline-imenu-create-index ()
"Generate Imenu index for headings.
This assumes that `outline-regexp' marks the characters that
indicate a heading, but not the text following it. The heading
text is taken as everything on the line after the
`outline-regexp' match (except for any leading whitespace)."
(goto-char (point-min))
(let (path-alist ; ((level . heading))
index)
(while (re-search-forward (concat "^" outline-regexp) nil t)
(let* ((head (replace-regexp-in-string
"\\`\\s-*" ""
(buffer-substring-no-properties (point) (point-at-eol))))
(head-level (save-excursion (beginning-of-line)
(funcall outline-level)))
(parent-levels (km/outline--parent-levels head-level))
(parent-heads
(delq nil (mapcar (lambda (n) (cdr (assoc n path-alist)))
parent-levels)))
(target (concat (mapconcat #'identity
(append parent-heads
(list head))
" / "))))
(unless (string= head "")
(push (cons target (save-excursion (beginning-of-line) (point-marker)))
index))
(push (cons head-level head) path-alist)))
(nreverse index)))
(defun km/outline-jump-to-heading ()
"Jump to heading specified by `outline-regexp'."
(interactive)
(let ((imenu-create-index-function #'km/outline-imenu-create-index)
helm-cached-imenu-tick
helm-cached-imenu-alist
helm-cached-imenu-candidates)
(call-interactively #'helm-imenu)))
;; Modified from https://github.com/abo-abo/hydra/wiki/Emacs
(defhydra hydra-outline-mode (:hint nil)
"
^^Hide ^^Show ^^Move
_q_ sublevels _a_ all _u_ up
_t_ body _e_ entry _n_ next visible
_o_ other _i_ children _p_ previous visible
_c_ entry _k_ branches _f_ forward same level
_h_ leaves _s_ subtree _b_ backward same level
_d_ subtree
"
("q" hide-sublevels)
("t" hide-body)
("o" hide-other)
("c" hide-entry)
("h" hide-leaves)
("d" hide-subtree)
("a" show-all)
("e" show-entry)
("i" show-children)
("k" show-branches)
("s" show-subtree)
("u" outline-up-heading)
("n" outline-next-visible-heading)
("p" outline-previous-visible-heading)
("f" outline-forward-same-level)
("b" outline-backward-same-level)
("l" km/outline-jump-to-heading "jump" :color blue)
("m" outline-mark-subtree "mark" :color blue))
(defun km/hydra-outline-mode ()
(interactive)
(unless outline-minor-mode
(outline-minor-mode))
(hydra-outline-mode/body))
(global-set-key (kbd "C-c n") 'km/hydra-outline-mode)
(provide 'init-outline)
|