Emacs(Elisp): forward/backward-wordだと、移動距離が微妙に大きい。単語境界も微妙だった。ので、ちょっと変質的にカーソル移動をカスタマイズ。

move-to-next(previous)-word-break.el

;;; ------------------------------------------------------------
;;; 次/前のwordbreakへ
;; gist-description: Emacs(Elisp): forward/backward-wordだと、移動距離が微妙に大きいので、単語境界でひっかかるように。
;; gist-id: 467f4302c002049bfb95511bd21cdbe7
;; gist-name: move-to-next(previous)-word-break.el
;; gist-private: nil
;; thx http://d.hatena.ne.jp/h1mesuke/20070803/p1

(defun move-to-next-word-break (&optional arg)
  "Move point forward ARG word breaks (backward if ARG is negative)."
  (interactive "^P")
  (setq arg (if arg (prefix-numeric-value arg) 1))
  (if (< arg 0)
      (move-to-previous-word-break (- arg))
    (while (and (> arg 0)
                (< (point) (point-max))
                (progn (forward-char)
                       (re-search-forward "\\b" nil t)))
      (setq arg (1- arg)))))

(defun move-to-previous-word-break (&optional arg)
  "Move point backward ARG word breaks (forward if ARG is negative)."
  (interactive "^P")
  (setq arg (if arg (prefix-numeric-value arg) 1))
  (if (< arg 0)
      (move-to-next-word-break (- arg))
    (while (and (> arg 0)
                (> (point) (point-min))
                (progn (backward-char)
                       (re-search-backward "\\b" nil t)))
      (setq arg (1- arg)))))

(global-set-key (kbd "<M-left>") 'move-to-previous-word-break)
(global-set-key (kbd "<M-right>") 'move-to-next-word-break)

skip-chars-(forward|backward)-dwim.el

;;; ------------------------------------------------------------
;;; 自分好みのカーソル移動
;; gist-description: Emacs(Elisp): forward/backward-wordだと、移動距離が微妙に大きい。単語境界も微妙だった。ので、ちょっと変質的にカーソル移動をカスタマイズ。
;; gist-id: 467f4302c002049bfb95511bd21cdbe7
;; gist-name: skip-chars-(forward|backward)-dwim.el
;; gist-private: nil

(defun skip-chars-forward-dwim ()
  "Skip chars forward dwim."
  (interactive "^")
  (let ((start (point)))
    (if (eq last-command this-command)
        (skip-chars-forward "a-zA-Z0-9_-")
      (skip-chars-forward "a-zA-Z0-9_"))
    (when (eq start (point))
      (skip-syntax-forward " "))
    (when (eq start (point))
      (skip-syntax-forward "()"))
    (when (eq start (point))
      (skip-syntax-forward "<>"))
    (when (eq start (point))
      (skip-chars-forward "-"))
    (when (eq start (point))
      (skip-chars-forward "ぁ-んー"))
    (when (eq start (point))
      (skip-chars-forward "ァ-ヶー"))
    (when (eq start (point))
      (skip-chars-forward "亜-黑ー"))
    (when (eq start (point))
      (goto-char (+ (point) 1)))))

(defun skip-chars-backward-dwim ()
  "Skip chars backward dwim."
  (interactive "^")
  (let ((start (point)))
    (if (eq last-command this-command)
        (skip-chars-backward "a-zA-Z0-9_-")
      (skip-chars-backward "a-zA-Z0-9_"))
    (when (eq start (point))
      (skip-syntax-backward " "))
    (when (eq start (point))
      (skip-syntax-backward "()"))
    (when (eq start (point))
      (skip-syntax-backward "<>"))
    (when (eq start (point))
      (skip-chars-backward "-"))
    (when (eq start (point))
      (skip-chars-backward "ぁ-んー"))
    (when (eq start (point))
      (skip-chars-backward "ァ-ヶー"))
    (when (eq start (point))
      (skip-chars-backward "亜-黑ー"))
    (when (eq start (point))
      (goto-char (- (point) 1)))))

(global-set-key (kbd "<M-left>") 'skip-chars-backward-dwim)
(global-set-key (kbd "<M-right>") 'skip-chars-forward-dwim)