forked from cjohansen/.emacs.d
/
buffer-defuns.el
198 lines (169 loc) · 7.21 KB
/
buffer-defuns.el
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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
;; Buffer-related defuns
(require 'imenu)
(defvar buffer-local-mode nil)
(make-variable-buffer-local 'buffer-local-mode)
(defun mode-keymap (mode-sym)
(symbol-value (intern (concat (symbol-name mode-sym) "-map"))))
(defun* buffer-local-set-key (key action)
(when buffer-local-mode
(define-key (mode-keymap buffer-local-mode)
key action)
(return-from set-key-buffer-local))
(let* ((mode-name-loc (gensym "-blm")))
(eval `(define-minor-mode ,mode-name-loc nil nil nil (make-sparse-keymap)))
(setq buffer-local-mode mode-name-loc)
(funcall mode-name-loc 1)
(define-key (mode-keymap mode-name-loc) key action)))
(defun create-scratch-buffer nil
"create a new scratch buffer to work in. (could be *scratch* - *scratchX*)"
(interactive)
(let ((n 0)
bufname)
(while (progn
(setq bufname (concat "*scratch"
(if (= n 0) "" (int-to-string n))
"*"))
(setq n (1+ n))
(get-buffer bufname)))
(switch-to-buffer (get-buffer-create bufname))
(emacs-lisp-mode)
))
(defun toggle-window-split ()
(interactive)
(if (= (count-windows) 2)
(let* ((this-win-buffer (window-buffer))
(next-win-buffer (window-buffer (next-window)))
(this-win-edges (window-edges (selected-window)))
(next-win-edges (window-edges (next-window)))
(this-win-2nd (not (and (<= (car this-win-edges)
(car next-win-edges))
(<= (cadr this-win-edges)
(cadr next-win-edges)))))
(splitter
(if (= (car this-win-edges)
(car (window-edges (next-window))))
'split-window-horizontally
'split-window-vertically)))
(delete-other-windows)
(let ((first-win (selected-window)))
(funcall splitter)
(if this-win-2nd (other-window 1))
(set-window-buffer (selected-window) this-win-buffer)
(set-window-buffer (next-window) next-win-buffer)
(select-window first-win)
(if this-win-2nd (other-window 1))))))
(defun rotate-windows ()
"Rotate your windows"
(interactive)
(cond ((not (> (count-windows)1))
(message "You can't rotate a single window!"))
(t
(setq i 1)
(setq numWindows (count-windows))
(while (< i numWindows)
(let* (
(w1 (elt (window-list) i))
(w2 (elt (window-list) (+ (% i numWindows) 1)))
(b1 (window-buffer w1))
(b2 (window-buffer w2))
(s1 (window-start w1))
(s2 (window-start w2))
)
(set-window-buffer w1 b2)
(set-window-buffer w2 b1)
(set-window-start w1 s2)
(set-window-start w2 s1)
(setq i (1+ i)))))))
(defun ido-imenu ()
"Update the imenu index and then use ido to select a symbol to navigate to.
Symbols matching the text at point are put first in the completion list."
(interactive)
(imenu--make-index-alist)
(let ((name-and-pos '())
(symbol-names '()))
(flet ((addsymbols (symbol-list)
(when (listp symbol-list)
(dolist (symbol symbol-list)
(let ((name nil) (position nil))
(cond
((and (listp symbol) (imenu--subalist-p symbol))
(addsymbols symbol))
((listp symbol)
(setq name (car symbol))
(setq position (cdr symbol)))
((stringp symbol)
(setq name symbol)
(setq position (get-text-property 1 'org-imenu-marker symbol))))
(unless (or (null position) (null name))
(add-to-list 'symbol-names name)
(add-to-list 'name-and-pos (cons name position))))))))
(addsymbols imenu--index-alist))
;; If there are matching symbols at point, put them at the beginning of `symbol-names'.
(let ((symbol-at-point (thing-at-point 'symbol)))
(when symbol-at-point
(let* ((regexp (concat (regexp-quote symbol-at-point) "$"))
(matching-symbols (delq nil (mapcar (lambda (symbol)
(if (string-match regexp symbol) symbol))
symbol-names))))
(when matching-symbols
(sort matching-symbols (lambda (a b) (> (length a) (length b))))
(mapc (lambda (symbol) (setq symbol-names (cons symbol (delete symbol symbol-names))))
matching-symbols)))))
(let* ((selected-symbol (ido-completing-read "Symbol? " symbol-names))
(position (cdr (assoc selected-symbol name-and-pos))))
(push-mark (point))
(goto-char position))))
;;; These belong in coding-hook:
;; We have a number of turn-on-* functions since it's advised that lambda
;; functions not go in hooks. Repeatedly evaling an add-to-list with a
;; hook value will repeatedly add it since there's no way to ensure
;; that a lambda doesn't already exist in the list.
(defun local-column-number-mode ()
(make-local-variable 'column-number-mode)
(column-number-mode t))
(defun local-comment-auto-fill ()
(set (make-local-variable 'comment-auto-fill-only-comments) t)
(auto-fill-mode t))
(defun turn-on-hl-line-mode ()
(if window-system (hl-line-mode t)))
(defun turn-on-save-place-mode ()
(setq save-place t))
(defun turn-on-whitespace ()
(whitespace-mode t))
(defun turn-off-tool-bar ()
(tool-bar-mode -1))
(add-hook 'coding-hook 'local-column-number-mode)
(add-hook 'coding-hook 'local-comment-auto-fill)
(add-hook 'coding-hook 'turn-on-hl-line-mode)
(defun untabify-buffer ()
(interactive)
(untabify (point-min) (point-max)))
(defun indent-buffer ()
(interactive)
(indent-region (point-min) (point-max)))
(defun cleanup-buffer-safe ()
"Perform a bunch of safe operations on the whitespace content of a buffer.
Does not indent buffer, because it is used for a before-save-hook, and that
might be bad."
(interactive)
(untabify-buffer)
(delete-trailing-whitespace)
(set-buffer-file-coding-system 'utf-8))
(defun cleanup-buffer ()
"Perform a bunch of operations on the whitespace content of a buffer.
Including indent-buffer, which should not be called automatically on save."
(interactive)
(cleanup-buffer-safe)
(indent-buffer))
(defun file-name-with-one-directory (file-name)
(concat (cadr (reverse (split-string file-name "/"))) "/"
(file-name-nondirectory file-name)))
(defun recentf--file-cons (file-name)
(cons (file-name-with-one-directory file-name) file-name))
(defun recentf-ido-find-file ()
"Find a recent file using ido."
(interactive)
(let* ((recent-files (mapcar 'recentf--file-cons recentf-list))
(files (mapcar 'car recent-files))
(file (completing-read "Choose recent file: " files)))
(find-file (cdr (assoc file recent-files)))))