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sense-expand-region.el
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sense-expand-region.el
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;;; sense-expand-region.el --- 'sense-region.el like' expand-region.el wrapper
;; -*- Mode: Emacs-Lisp -*-
;; Copyright (C) 2012-2018 by 101000code/101000LAB
;; 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 2 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, write to the Free Software
;; Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
;; Version: 0.0.6
;; Author: k1LoW (Kenichirou Oyama), <k1lowxb [at] gmail [dot] com> <k1low [at] 101000lab [dot] org>
;; URL: http://code.101000lab.org
;; Package-Requires: ((expand-region "0.11.0") (multiple-cursors "1.4.0"))
;;; Reference
;; Some code referenced from expand-region.el
;;
;; expand-region.el
;; Author: Magnar Sveen <magnars@gmail.com>
;;; Install
;; Put this file into load-path'ed directory, and byte compile it if
;; desired. And put the following expression into your ~/.emacs.
;;
;; (require 'sense-expand-region)
;; (global-set-key (kbd "C-@") 'sense-expand-region)
;;; Commentary:
;;
;; This package is 'sense-region.el like' expand-region.el wrapper.
;;
;; (/ (+ sense-region.el expand-region.el) 2) ;=> sense-expand-region.el !!
;;
;; sense-region.el
;; http://www.taiyaki.org/elisp/sense-region/
;;
;; expand-region.el
;; https://github.com/magnars/expand-region.el
;;; Code:
;; require
(require 'expand-region)
(require 'multiple-cursors)
(add-to-list 'er/try-expand-list 'ser/mark-whole-line)
(add-to-list 'er/try-expand-list 'ser/mark-forward)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Variable ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defvar sense-expand-region-before-start nil)
(defvar sense-expand-region-before-end nil)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Interactive Functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun sense-expand-region (arg)
"Sense `er/expand-region'. if ARG negative, contract region."
(interactive "p")
(if (eq last-command this-command)
(ser/sense-expand-region arg)
(let* ((p1 (point))
(p2 (if (use-region-p) (mark) (point))))
(setq sense-expand-region-before-start (min p1 p2))
(setq sense-expand-region-before-end (max p1 p2))
(if (not (region-active-p))
(set-mark (point))
(ser/sense-edit-lines sense-expand-region-before-start sense-expand-region-before-end)))))
;;;###autoload
(defun ser/sense-expand-region (arg)
"Sense `er/expand-region'. if ARG negative, contract region."
(if (< arg 1)
;; `er/contract-region' will take care of negative and 0 arguments
(er/contract-region (- arg))
;; We handle everything else
(when (and (er--first-invocation)
(not (use-region-p)))
(push-mark nil t) ;; one for keeping starting position
(push-mark nil t)) ;; one for replace by set-mark in expansions
(when (not (eq t transient-mark-mode))
(setq transient-mark-mode (cons 'only transient-mark-mode)))
(while (>= arg 1)
(setq arg (- arg 1))
(let* ((p1 (point))
(p2 (if (use-region-p) (mark) (point)))
(start (min p1 p2))
(end (max p1 p2))
(try-list er/try-expand-list)
(best-start 1)
(best-end (buffer-end 1))
(longest-start 0)
(longest-end 0))
;; add hook to clear history on buffer changes
(unless er/history
(add-hook 'after-change-functions 'er/clear-history t t))
;; remember the start and end points so we can contract later
;; unless we're already at maximum size
(unless (and (= start best-start)
(= end best-end))
(push (cons start end) er/history))
(when (and (er--point-is-surrounded-by-white-space)
(= start end))
(skip-chars-forward er--space-str)
(setq start (point)))
;; check longest-*
(while try-list
(save-excursion
(goto-char sense-expand-region-before-start)
(set-mark sense-expand-region-before-end)
(ignore-errors
(funcall (car try-list))
(when (> (- (mark) (point)) (- longest-end longest-start))
(setq longest-start (point))
(setq longest-end (mark))))
(setq try-list (cdr try-list))))
(setq try-list er/try-expand-list)
(while try-list
(save-excursion
(goto-char sense-expand-region-before-start)
(set-mark sense-expand-region-before-end)
(setq prev-mark (mark))
(setq prev-point (point))
(ignore-errors
(while (< (- (mark) (point)) (- longest-end longest-start))
(funcall (car try-list))
(if (and (= prev-mark (mark)) (= prev-point (point)))
(progn
(goto-char longest-start)
(set-mark longest-end)
return))
(when (and (region-active-p)
(or (<= (point) start) ;; modified
(>= (mark) end))
(> (- (mark) (point)) (- end start))
(< (- (mark) (point)) (- best-end best-start)))
(setq best-start (point))
(setq best-end (mark))
(unless (minibufferp)
(message "%S" (car try-list))))
(setq prev-mark (mark))
(setq prev-point (point)))))
(setq try-list (cdr try-list)))
(goto-char best-start)
(set-mark best-end)
(when (and (= best-start longest-start)
(= best-end longest-end))
(setq sense-expand-region-before-start best-start)
(setq sense-expand-region-before-end best-end))
(when (and (= best-start 0)
(= best-end (buffer-end 1))) ;; We didn't find anything new, so exit early
(setq arg 0))))))
;;;###autoload
(defun ser/sense-edit-lines (s e)
"Edit multiple lines.
If S `current-column` = E `current-column`, call `mc/edit-lines`.
If S `current-column` != E `current-column`, call `rectangle-mark-mode`."
(if (eq (save-excursion (goto-char s) (current-column))
(save-excursion (goto-char e) (current-column)))
(call-interactively 'mc/edit-lines)
(call-interactively 'rectangle-mark-mode)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Utilities Functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun ser/mark-whole-line ()
"Mark whole-line."
(interactive)
(set-mark (save-excursion
(end-of-line)
(point)))
(back-to-indentation))
(defun ser/mark-forward ()
"Mark forward."
(interactive)
(let (line-end)
(save-excursion
(end-of-line)
(setq line-end (point)))
(set-mark (save-excursion
(unless (not (region-active-p))
(goto-char (region-end))
(goto-char (+ (point) 1)))
(re-search-forward "[\s(\s)\>]" nil t)
(goto-char (- (point) 1))
(unless (> line-end (point))
(goto-char line-end))
(point)))))
(provide 'sense-expand-region)
;;; sense-expand-region.el ends here