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;;; evil-collection-unimpaired.el --- Evil Collection port of Unimpaired -*- lexical-binding: t -*-
;; Copyright (C) 2019 James Nguyen
;; Author: James Nguyen <james@jojojames.com>
;; Maintainer: James Nguyen <james@jojojames.com>
;; Pierre Neidhardt <mail@ambrevar.xyz>
;; URL: https://github.com/emacs-evil/evil-collection
;; Version: 0.0.1
;; Package-Requires: ((emacs "25.1"))
;; Keywords: evil, unimpaired, tools
;; 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:
;; `evil' port of unimpaired for `evil-collection'.
;; https://github.com/tpope/vim-unimpaired
;;; Code:
(require 'evil-collection)
(defgroup evil-collection-unimpaired nil
"Evil port of unimpaired for `evil-collection'."
:group 'evil-collection)
(defconst evil-collection-unimpaired-maps '(evil-collection-unimpaired-mode-map))
(defvar evil-collection-unimpaired-mode-map (make-sparse-keymap)
"Keymap for `evil-collection-unimpaired-mode'.")
(define-minor-mode evil-collection-unimpaired-mode
""
nil
nil
evil-collection-unimpaired-mode-map)
;;;###autoload
(define-global-minor-mode global-evil-collection-unimpaired-mode
evil-collection-unimpaired-mode evil-collection-unimpaired-mode-on
:group 'evil-collection-unimpaired)
(defun evil-collection-unimpaired-mode-on ()
"Turn on `evil-collection-unimpaired-mode'."
(evil-collection-unimpaired-mode 1))
(defun evil-collection-unimpaired-next-error ()
"Go to next error."
(interactive)
(cond
((and (bound-and-true-p flycheck-mode)
(fboundp 'flycheck-next-error))
(flycheck-next-error))
((and (bound-and-true-p flymake-mode)
(fboundp 'flymake-goto-next-error))
(flymake-goto-next-error))
(:default
(message "No linting modes are on."))))
(defun evil-collection-unimpaired-previous-error ()
"Go to previous error."
(interactive)
(cond
((and (bound-and-true-p flycheck-mode)
(fboundp 'flycheck-previous-error))
(flycheck-previous-error))
((and (bound-and-true-p flymake-mode)
(fboundp 'flymake-goto-prev-error))
(flymake-goto-prev-error))
(:default
(message "No linting modes are on."))))
(defun evil-collection-unimpaired-insert-newline-above (count)
"Insert COUNT blank line(s) above current line."
(interactive "p")
(save-excursion (dotimes (_ count) (evil-insert-newline-above)))
(when (bolp) (forward-char count)))
(defun evil-collection-unimpaired-insert-newline-below (count)
"Insert COUNT blank line(s) below current line."
(interactive "p")
(save-excursion (dotimes (_ count) (evil-insert-newline-below))))
(defun evil-collection-unimpaired--encode (beg end fn)
"Apply FN in range from BEG to END."
(save-excursion
(goto-char beg)
(let* ((end (if (eq evil-this-type 'line) (1- end) end))
(text (buffer-substring-no-properties beg end)))
(delete-region beg end)
(insert (funcall fn text)))))
(evil-define-operator evil-collection-unimpaired-url-encode (count &optional beg end)
"Encode a URL string."
(interactive "<c><r>")
(ignore count)
(evil-collection-unimpaired--encode beg end #'url-encode-url))
(evil-define-operator evil-collection-unimpaired-url-decode (count &optional beg end)
"Decode a URL string."
(interactive "<c><r>")
(ignore count)
(evil-collection-unimpaired--encode beg end #'url-unhex-string))
;; https://stackoverflow.com/questions/2423834/move-line-region-up-and-down-in-emacs
(defun evil-collection-unimpaired--move-text (arg)
"Move text down if ARG is positive, otherwise move text up."
(cond
((and mark-active transient-mark-mode)
(when (> (point) (mark))
(exchange-point-and-mark))
(let ((column (current-column))
(text (delete-and-extract-region (point) (mark))))
(forward-line arg)
(move-to-column column :force)
(set-mark (point))
(insert text)
(exchange-point-and-mark)
(setq deactivate-mark nil)))
(t
(let ((column (current-column)))
(beginning-of-line)
(when (or (> arg 0) (not (bobp)))
(forward-line)
(when (or (< arg 0) (not (eobp)))
(transpose-lines arg))
(forward-line -1))
(move-to-column column)))))
(defun evil-collection-unimpaired-move-text-down (arg)
"Move region (transient-mark-mode active) or current line ARG lines down."
(interactive "*p")
(evil-collection-unimpaired--move-text arg))
(defun evil-collection-unimpaired-move-text-up (arg)
"Move region (transient-mark-mode active) or current line ARG lines up."
(interactive "*p")
(evil-collection-unimpaired--move-text (- arg)))
;;;###autoload
(defun evil-collection-unimpaired-setup ()
"Set up unimpaired-like bindings."
(global-evil-collection-unimpaired-mode 1)
(evil-collection-define-key 'normal 'evil-collection-unimpaired-mode-map
"[b" 'evil-prev-buffer
"]b" 'evil-next-buffer
"[e" 'evil-collection-unimpaired-move-text-up
"]e" 'evil-collection-unimpaired-move-text-down
"]l" 'evil-collection-unimpaired-next-error
"[l" 'evil-collection-unimpaired-previous-error
(kbd "[ SPC") 'evil-collection-unimpaired-insert-newline-above
(kbd "] SPC") 'evil-collection-unimpaired-insert-newline-below)
(evil-collection-define-key 'visual 'evil-collection-unimpaired-mode-map
"[e" 'evil-collection-unimpaired-move-text-up
"]e" 'evil-collection-unimpaired-move-text-down)
(evil-collection-define-key 'motion 'evil-collection-unimpaired-mode-map
"[u" 'evil-collection-unimpaired-url-encode
"]u" 'evil-collection-unimpaired-url-decode))
(provide 'evil-collection-unimpaired)
;;; evil-collection-unimpaired.el ends here
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