diff --git a/lisp/simple.el b/lisp/simple.el index bdac6be2a37..255a9c17d2d 100644 --- a/lisp/simple.el +++ b/lisp/simple.el @@ -1606,75 +1606,81 @@ Outline mode sets this.") ;; This is the guts of next-line and previous-line. ;; Arg says how many lines to move. (defun line-move (arg) - (let (new) - ;; Don't run any point-motion hooks, and disregard intangibility, - ;; for intermediate positions. - (let ((inhibit-point-motion-hooks t)) - (save-excursion - (if (not (or (eq last-command 'next-line) - (eq last-command 'previous-line))) - (setq temporary-goal-column - (if (and track-eol (eolp) - ;; Don't count beg of empty line as end of line - ;; unless we just did explicit end-of-line. - (or (not (bolp)) (eq last-command 'end-of-line))) - 9999 - (current-column)))) - (if (and (not (integerp selective-display)) - (not line-move-ignore-invisible)) - ;; Use just newline characters. - (or (if (> arg 0) - (progn (if (> arg 1) (forward-line (1- arg))) - ;; This way of moving forward ARG lines - ;; verifies that we have a newline after the last one. - ;; It doesn't get confused by intangible text. - (end-of-line) - (zerop (forward-line 1))) - (and (zerop (forward-line arg)) - (bolp))) - (signal (if (< arg 0) - 'beginning-of-buffer - 'end-of-buffer) - nil)) - ;; Move by arg lines, but ignore invisible ones. - (while (> arg 0) - (end-of-line) - (and (zerop (vertical-motion 1)) - (signal 'end-of-buffer nil)) - ;; If the following character is currently invisible, - ;; skip all characters with that same `invisible' property value. - (while (and (not (eobp)) - (let ((prop - (get-char-property (point) 'invisible))) - (if (eq buffer-invisibility-spec t) - prop - (or (memq prop buffer-invisibility-spec) - (assq prop buffer-invisibility-spec))))) - (if (get-text-property (point) 'invisible) - (goto-char (next-single-property-change (point) 'invisible)) - (goto-char (next-overlay-change (point))))) - (setq arg (1- arg))) - (while (< arg 0) - (beginning-of-line) - (and (zerop (vertical-motion -1)) - (signal 'beginning-of-buffer nil)) - (while (and (not (bobp)) - (let ((prop - (get-char-property (1- (point)) 'invisible))) - (if (eq buffer-invisibility-spec t) - prop - (or (memq prop buffer-invisibility-spec) - (assq prop buffer-invisibility-spec))))) - (if (get-text-property (1- (point)) 'invisible) - (goto-char (previous-single-property-change (point) 'invisible)) - (goto-char (previous-overlay-change (point))))) - (setq arg (1+ arg)))) - (move-to-column (or goal-column temporary-goal-column)) - (setq new (point)))) - ;; Run any point-motion hooks, deal with intangible text, etc., - ;; once and for all, for the entire motion we did. - (goto-char new) - nil)) + ;; Don't run any point-motion hooks, and disregard intangibility, + ;; for intermediate positions. + (let ((inhibit-point-motion-hooks t) + (opoint (point)) + new) + (unwind-protect + (progn + (if (not (or (eq last-command 'next-line) + (eq last-command 'previous-line))) + (setq temporary-goal-column + (if (and track-eol (eolp) + ;; Don't count beg of empty line as end of line + ;; unless we just did explicit end-of-line. + (or (not (bolp)) (eq last-command 'end-of-line))) + 9999 + (current-column)))) + (if (and (not (integerp selective-display)) + (not line-move-ignore-invisible)) + ;; Use just newline characters. + (or (if (> arg 0) + (progn (if (> arg 1) (forward-line (1- arg))) + ;; This way of moving forward ARG lines + ;; verifies that we have a newline after the last one. + ;; It doesn't get confused by intangible text. + (end-of-line) + (zerop (forward-line 1))) + (and (zerop (forward-line arg)) + (bolp))) + (signal (if (< arg 0) + 'beginning-of-buffer + 'end-of-buffer) + nil)) + ;; Move by arg lines, but ignore invisible ones. + (while (> arg 0) + (end-of-line) + (and (zerop (vertical-motion 1)) + (signal 'end-of-buffer nil)) + ;; If the following character is currently invisible, + ;; skip all characters with that same `invisible' property value. + (while (and (not (eobp)) + (let ((prop + (get-char-property (point) 'invisible))) + (if (eq buffer-invisibility-spec t) + prop + (or (memq prop buffer-invisibility-spec) + (assq prop buffer-invisibility-spec))))) + (if (get-text-property (point) 'invisible) + (goto-char (next-single-property-change (point) 'invisible)) + (goto-char (next-overlay-change (point))))) + (setq arg (1- arg))) + (while (< arg 0) + (beginning-of-line) + (and (zerop (vertical-motion -1)) + (signal 'beginning-of-buffer nil)) + (while (and (not (bobp)) + (let ((prop + (get-char-property (1- (point)) 'invisible))) + (if (eq buffer-invisibility-spec t) + prop + (or (memq prop buffer-invisibility-spec) + (assq prop buffer-invisibility-spec))))) + (if (get-text-property (1- (point)) 'invisible) + (goto-char (previous-single-property-change (point) 'invisible)) + (goto-char (previous-overlay-change (point))))) + (setq arg (1+ arg)))) + (move-to-column (or goal-column temporary-goal-column))) + ;; Remember where we moved to, go back home, + ;; then do the motion over again + ;; in just one step, with intangibility and point-motion hooks + ;; enabled this time. + (setq new (point)) + (goto-char opoint) + (setq inhibit-point-motion-hooks nil) + (goto-char new))) + nil) ;;; Many people have said they rarely use this feature, and often type ;;; it by accident. Maybe it shouldn't even be on a key.