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;;; oni-editing.el --- General editing commands and functions -*- lexical-binding: t; -*-
;; Copyright (C) 2015 Tom Willemse
;; Author: Tom Willemse <tom@ryuslash.org>
;; Keywords:
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Here are some general editing functions and commands.
;;; Code:
;;;###autoload
(defun oni:move-beginning-of-dwim ()
"Move to beginning of line either after indentation or before."
(interactive)
(let ((start (point)))
(back-to-indentation)
(if (= start (point))
(move-beginning-of-line 1))))
(defun oni:change-number-at-point (change-func)
"Use CHANGE-FUNC to change the number at `point'."
(let ((num (number-to-string (funcall change-func (number-at-point))))
(bounds (bounds-of-thing-at-point 'word)))
(save-excursion
(delete-region (car bounds) (cdr bounds))
(insert num))))
(defun oni:change-prev-case (num dir)
"Change the case of the region or previous word."
(let ((regfunc (if (eq dir 'up) 'upcase-region 'downcase-region))
(wordfunc (if (eq dir 'up) 'upcase-word 'downcase-word)))
(if (> num 1)
(funcall regfunc (point) (- (point) num))
(funcall wordfunc -1))))
;;;###autoload
(defun oni:decrease-number-at-point ()
"Take the number at `point' and replace it with it decreased by 1."
(interactive)
(oni:change-number-at-point #'1-))
;;;###autoload
(defun oni:disable-tabs-mode ()
"Function for `vala-mode-hook'."
(setq indent-tabs-mode nil))
;;;###autoload
(defun oni:downcase-prev (num)
(interactive "p")
(oni:change-prev-case num 'down))
;;;###autoload
(defun oni:move-end-of-dwim ()
"Move to end of line, either before any comments or after."
(interactive)
(let ((start (point))
(eolpos (line-end-position)))
(beginning-of-line)
(if (and comment-start
(not (looking-at (regexp-quote comment-start)))
(comment-search-forward eolpos t))
(progn
(search-backward-regexp (concat "[^ \t" comment-start "]"))
(forward-char)
(when (or (bolp)
(= start (point)))
(end-of-line)))
(end-of-line))))
;;;###autoload
(defun oni:increase-number-at-point ()
"Take the number at `point' and replace it with it increased by 1."
(interactive)
(oni:change-number-at-point #'1+))
;;;###autoload
(defun oni:indent-defun ()
"Indent the current defun."
(interactive)
(save-excursion
(mark-defun)
(indent-region (region-beginning) (region-end))))
;;;###autoload
(defun oni:locally-enable-double-spaces ()
"Specify that two spaces end a sentence in the current buffer."
(setq-local sentence-end-double-space t))
;;;###autoload
(defun oni:reload-buffer ()
"Reload current buffer."
(interactive)
(revert-buffer nil t nil))
;;;###autoload
(defun oni:scroll-down-or-prev-page (arg)
"Either scroll down or go to the previous page.
Depending on the value of `buffer-narrowed-p'."
(interactive "^P")
(if (buffer-narrowed-p)
(let ((scroll-error-top-bottom nil))
(condition-case nil
(scroll-down-command arg)
(beginning-of-buffer
(narrow-to-page -1)
(goto-char (point-min)))))
(scroll-down-command arg)))
;;;###autoload
(defun oni:scroll-up-or-next-page (arg)
"Either scroll up or go to the next page.
Depending on the value of `buffer-narrowed-p'."
(interactive "^P")
(if (buffer-narrowed-p)
(let ((scroll-error-top-bottom nil))
(condition-case nil
(scroll-up-command arg)
(end-of-buffer
(narrow-to-page 1)
(goto-char (point-min)))))
(scroll-up-command arg)))
;;;###autoload
(defun oni:self-insert-dwim ()
"Execute self insert, but when the region is active call self
insert at the end of the region and at the beginning."
(interactive)
(if (region-active-p)
(let ((electric-pair-mode nil)
(beginning (region-beginning))
(end (region-end)))
(goto-char end)
(self-insert-command 1)
(save-excursion
(goto-char beginning)
(self-insert-command 1)))
(self-insert-command 1)))
;;;###autoload
(defun oni:upcase-prev (num)
(interactive "p")
(oni:change-prev-case num 'up))
(provide 'oni-editing)
;;; oni-editing.el ends here
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