;; Making and deleting lines.
+(defvar self-insert-uses-region-functions nil
+ "Special hook to tell if `self-insert-command' will use the region.
+It must be called via `run-hook-with-args-until-success' with no arguments.
+Any `post-self-insert-command' which consumes the region should
+register a function on this hook so that things like `delete-selection-mode'
+can refrain from consuming the region.")
+
(defvar hard-newline (propertize "\n" 'hard t 'rear-nonsticky '(hard))
"Propertized string representing a hard newline character.")
The optional argument PROMPT specifies a string to use to prompt the user.
The variable `read-quoted-char-radix' controls which radix to use
for numeric input."
- (let ((message-log-max nil) done (first t) (code 0) translated)
+ (let ((message-log-max nil)
+ (help-events (delq nil (mapcar (lambda (c) (unless (characterp c) c))
+ help-event-list)))
+ done (first t) (code 0) translated)
(while (not done)
(let ((inhibit-quit first)
- ;; Don't let C-h get the help message--only help function keys.
+ ;; Don't let C-h or other help chars get the help
+ ;; message--only help function keys. See bug#16617.
(help-char nil)
+ (help-event-list help-events)
(help-form
"Type the special character you want to use,
or the octal character code.
(let ((minibuffer-completing-symbol t))
(minibuffer-with-setup-hook
(lambda ()
+ ;; FIXME: call emacs-lisp-mode?
+ (setq-local eldoc-documentation-function
+ #'elisp-eldoc-documentation-function)
(add-hook 'completion-at-point-functions
- #'lisp-completion-at-point nil t)
+ #'elisp-completion-at-point nil t)
(run-hooks 'eval-expression-minibuffer-setup-hook))
(read-from-minibuffer prompt initial-contents
read-expression-map t
;; add it to the history.
(or (equal newcmd (car command-history))
(setq command-history (cons newcmd command-history)))
- (unwind-protect
- (progn
- ;; Trick called-interactively-p into thinking that `newcmd' is
- ;; an interactive call (bug#14136).
- (add-hook 'called-interactively-p-functions
- #'repeat-complex-command--called-interactively-skip)
- (eval newcmd))
- (remove-hook 'called-interactively-p-functions
- #'repeat-complex-command--called-interactively-skip)))
+ (apply #'funcall-interactively
+ (car newcmd)
+ (mapcar (lambda (e) (eval e t)) (cdr newcmd))))
(if command-history
(error "Argument %d is beyond length of command history" arg)
(error "There are no previous complex commands to repeat")))))
-(defun repeat-complex-command--called-interactively-skip (i _frame1 frame2)
- (and (eq 'eval (cadr frame2))
- (eq 'repeat-complex-command
- (cadr (backtrace-frame i #'called-interactively-p)))
- 1))
(defvar extended-command-history nil)
(undo-make-selective-list (min beg end) (max beg end))
buffer-undo-list)))
+;; The positions given in elements of the undo list are the positions
+;; as of the time that element was recorded to undo history. In
+;; general, subsequent buffer edits render those positions invalid in
+;; the current buffer, unless adjusted according to the intervening
+;; undo elements.
+;;
+;; Undo in region is a use case that requires adjustments to undo
+;; elements. It must adjust positions of elements in the region based
+;; on newer elements not in the region so as they may be correctly
+;; applied in the current buffer. undo-make-selective-list
+;; accomplishes this with its undo-deltas list of adjustments. An
+;; example undo history from oldest to newest:
+;;
+;; buf pos:
+;; 123456789 buffer-undo-list undo-deltas
+;; --------- ---------------- -----------
+;; aaa (1 . 4) (1 . -3)
+;; aaba (3 . 4) N/A (in region)
+;; ccaaba (1 . 3) (1 . -2)
+;; ccaabaddd (7 . 10) (7 . -3)
+;; ccaabdd ("ad" . 6) (6 . 2)
+;; ccaabaddd (6 . 8) (6 . -2)
+;; | |<-- region: "caab", from 2 to 6
+;;
+;; When the user starts a run of undos in region,
+;; undo-make-selective-list is called to create the full list of in
+;; region elements. Each element is adjusted forward chronologically
+;; through undo-deltas to determine if it is in the region.
+;;
+;; In the above example, the insertion of "b" is (3 . 4) in the
+;; buffer-undo-list. The undo-delta (1 . -2) causes (3 . 4) to become
+;; (5 . 6). The next three undo-deltas cause no adjustment, so (5
+;; . 6) is assessed as in the region and placed in the selective list.
+;; Notably, the end of region itself adjusts from "2 to 6" to "2 to 5"
+;; due to the selected element. The "b" insertion is the only element
+;; fully in the region, so in this example undo-make-selective-list
+;; returns (nil (5 . 6)).
+;;
+;; The adjustment of the (7 . 10) insertion of "ddd" shows an edge
+;; case. It is adjusted through the undo-deltas: ((6 . 2) (6 . -2)).
+;; Normally an undo-delta of (6 . 2) would cause positions after 6 to
+;; adjust by 2. However, they shouldn't adjust to less than 6, so (7
+;; . 10) adjusts to (6 . 8) due to the first undo delta.
+;;
+;; More interesting is how to adjust the "ddd" insertion due to the
+;; next undo-delta: (6 . -2), corresponding to reinsertion of "ad".
+;; If the reinsertion was a manual retyping of "ad", then the total
+;; adjustment should be (7 . 10) -> (6 . 8) -> (8 . 10). However, if
+;; the reinsertion was due to undo, one might expect the first "d"
+;; character would again be a part of the "ddd" text, meaning its
+;; total adjustment would be (7 . 10) -> (6 . 8) -> (7 . 10).
+;;
+;; undo-make-selective-list assumes in this situation that "ad" was a
+;; new edit, even if it was inserted because of an undo.
+;; Consequently, if the user undos in region "8 to 10" of the
+;; "ccaabaddd" buffer, they could be surprised that it becomes
+;; "ccaabad", as though the first "d" became detached from the
+;; original "ddd" insertion. This quirk is a FIXME.
+
(defun undo-make-selective-list (start end)
"Return a list of undo elements for the region START to END.
-The elements come from `buffer-undo-list', but we keep only
-the elements inside this region, and discard those outside this region.
-If we find an element that crosses an edge of this region,
-we stop and ignore all further elements."
- (let ((undo-list-copy (undo-copy-list buffer-undo-list))
- (undo-list (list nil))
- some-rejected
- undo-elt temp-undo-list delta)
- (while undo-list-copy
- (setq undo-elt (car undo-list-copy))
- (let ((keep-this
- (cond ((and (consp undo-elt) (eq (car undo-elt) t))
- ;; This is a "was unmodified" element.
- ;; Keep it if we have kept everything thus far.
- (not some-rejected))
- ;; Skip over marker adjustments, instead relying on
- ;; finding them after (TEXT . POS) elements
- ((markerp (car-safe undo-elt))
- nil)
- (t
- (undo-elt-in-region undo-elt start end)))))
- (if keep-this
- (progn
- (setq end (+ end (cdr (undo-delta undo-elt))))
- ;; Don't put two nils together in the list
- (when (not (and (eq (car undo-list) nil)
- (eq undo-elt nil)))
- (setq undo-list (cons undo-elt undo-list))
- ;; If (TEXT . POS), "keep" its subsequent (MARKER
- ;; . ADJUSTMENT) whose markers haven't moved.
- (when (and (stringp (car-safe undo-elt))
- (integerp (cdr-safe undo-elt)))
- (let ((list-i (cdr undo-list-copy)))
+The elements come from `buffer-undo-list', but we keep only the
+elements inside this region, and discard those outside this
+region. The elements' positions are adjusted so as the returned
+list can be applied to the current buffer."
+ (let ((ulist buffer-undo-list)
+ ;; A list of position adjusted undo elements in the region.
+ (selective-list (list nil))
+ ;; A list of undo-deltas for out of region undo elements.
+ undo-deltas
+ undo-elt)
+ (while ulist
+ (when undo-no-redo
+ (while (gethash ulist undo-equiv-table)
+ (setq ulist (gethash ulist undo-equiv-table))))
+ (setq undo-elt (car ulist))
+ (cond
+ ((null undo-elt)
+ ;; Don't put two nils together in the list
+ (when (car selective-list)
+ (push nil selective-list)))
+ ((and (consp undo-elt) (eq (car undo-elt) t))
+ ;; This is a "was unmodified" element. Keep it
+ ;; if we have kept everything thus far.
+ (when (not undo-deltas)
+ (push undo-elt selective-list)))
+ ;; Skip over marker adjustments, instead relying
+ ;; on finding them after (TEXT . POS) elements
+ ((markerp (car-safe undo-elt))
+ nil)
+ (t
+ (let ((adjusted-undo-elt (undo-adjust-elt undo-elt
+ undo-deltas)))
+ (if (undo-elt-in-region adjusted-undo-elt start end)
+ (progn
+ (setq end (+ end (cdr (undo-delta adjusted-undo-elt))))
+ (push adjusted-undo-elt selective-list)
+ ;; Keep (MARKER . ADJUSTMENT) if their (TEXT . POS) was
+ ;; kept. primitive-undo may discard them later.
+ (when (and (stringp (car-safe adjusted-undo-elt))
+ (integerp (cdr-safe adjusted-undo-elt)))
+ (let ((list-i (cdr ulist)))
(while (markerp (car-safe (car list-i)))
- (let* ((adj-elt (pop list-i))
- (m (car adj-elt)))
- (and (eq (marker-buffer m) (current-buffer))
- (= (cdr undo-elt) m)
- (push adj-elt undo-list))))))))
- (if (undo-elt-crosses-region undo-elt start end)
- (setq undo-list-copy nil)
- (setq some-rejected t)
- (setq temp-undo-list (cdr undo-list-copy))
- (setq delta (undo-delta undo-elt))
-
- (when (/= (cdr delta) 0)
- (let ((position (car delta))
- (offset (cdr delta)))
-
- ;; Loop down the earlier events adjusting their buffer
- ;; positions to reflect the fact that a change to the buffer
- ;; isn't being undone. We only need to process those element
- ;; types which undo-elt-in-region will return as being in
- ;; the region since only those types can ever get into the
- ;; output
-
- (while temp-undo-list
- (setq undo-elt (car temp-undo-list))
- (cond ((integerp undo-elt)
- (if (>= undo-elt position)
- (setcar temp-undo-list (- undo-elt offset))))
- ((atom undo-elt) nil)
- ((stringp (car undo-elt))
- ;; (TEXT . POSITION)
- (let ((text-pos (abs (cdr undo-elt)))
- (point-at-end (< (cdr undo-elt) 0 )))
- (if (>= text-pos position)
- (setcdr undo-elt (* (if point-at-end -1 1)
- (- text-pos offset))))))
- ((integerp (car undo-elt))
- ;; (BEGIN . END)
- (when (>= (car undo-elt) position)
- (setcar undo-elt (- (car undo-elt) offset))
- (setcdr undo-elt (- (cdr undo-elt) offset))))
- ((null (car undo-elt))
- ;; (nil PROPERTY VALUE BEG . END)
- (let ((tail (nthcdr 3 undo-elt)))
- (when (>= (car tail) position)
- (setcar tail (- (car tail) offset))
- (setcdr tail (- (cdr tail) offset))))))
- (setq temp-undo-list (cdr temp-undo-list))))))))
- (setq undo-list-copy (cdr undo-list-copy)))
- (nreverse undo-list)))
+ (push (pop list-i) selective-list)))))
+ (let ((delta (undo-delta undo-elt)))
+ (when (/= 0 (cdr delta))
+ (push delta undo-deltas)))))))
+ (pop ulist))
+ (nreverse selective-list)))
(defun undo-elt-in-region (undo-elt start end)
"Determine whether UNDO-ELT falls inside the region START ... END.
"Test whether UNDO-ELT crosses one edge of that region START ... END.
This assumes we have already decided that UNDO-ELT
is not *inside* the region START...END."
+ (declare (obsolete nil "25.1"))
(cond ((atom undo-elt) nil)
((null (car undo-elt))
;; (nil PROPERTY VALUE BEG . END)
(and (< (car undo-elt) end)
(> (cdr undo-elt) start)))))
+(defun undo-adjust-elt (elt deltas)
+ "Return adjustment of undo element ELT by the undo DELTAS
+list."
+ (pcase elt
+ ;; POSITION
+ ((pred integerp)
+ (undo-adjust-pos elt deltas))
+ ;; (BEG . END)
+ (`(,(and beg (pred integerp)) . ,(and end (pred integerp)))
+ (undo-adjust-beg-end beg end deltas))
+ ;; (TEXT . POSITION)
+ (`(,(and text (pred stringp)) . ,(and pos (pred integerp)))
+ (cons text (* (if (< pos 0) -1 1)
+ (undo-adjust-pos (abs pos) deltas))))
+ ;; (nil PROPERTY VALUE BEG . END)
+ (`(nil . ,(or `(,prop ,val ,beg . ,end) pcase--dontcare))
+ `(nil ,prop ,val . ,(undo-adjust-beg-end beg end deltas)))
+ ;; (apply DELTA START END FUN . ARGS)
+ ;; FIXME
+ ;; All others return same elt
+ (_ elt)))
+
+;; (BEG . END) can adjust to the same positions, commonly when an
+;; insertion was undone and they are out of region, for example:
+;;
+;; buf pos:
+;; 123456789 buffer-undo-list undo-deltas
+;; --------- ---------------- -----------
+;; [...]
+;; abbaa (2 . 4) (2 . -2)
+;; aaa ("bb" . 2) (2 . 2)
+;; [...]
+;;
+;; "bb" insertion (2 . 4) adjusts to (2 . 2) because of the subsequent
+;; undo. Further adjustments to such an element should be the same as
+;; for (TEXT . POSITION) elements. The options are:
+;;
+;; 1: POSITION adjusts using <= (use-< nil), resulting in behavior
+;; analogous to marker insertion-type t.
+;;
+;; 2: POSITION adjusts using <, resulting in behavior analogous to
+;; marker insertion-type nil.
+;;
+;; There was no strong reason to prefer one or the other, except that
+;; the first is more consistent with prior undo in region behavior.
+(defun undo-adjust-beg-end (beg end deltas)
+ "Return cons of adjustments to BEG and END by the undo DELTAS
+list."
+ (let ((adj-beg (undo-adjust-pos beg deltas)))
+ ;; Note: option 2 above would be like (cons (min ...) adj-end)
+ (cons adj-beg
+ (max adj-beg (undo-adjust-pos end deltas t)))))
+
+(defun undo-adjust-pos (pos deltas &optional use-<)
+ "Return adjustment of POS by the undo DELTAS list, comparing
+with < or <= based on USE-<."
+ (dolist (d deltas pos)
+ (when (if use-<
+ (< (car d) pos)
+ (<= (car d) pos))
+ (setq pos
+ ;; Don't allow pos to become less than the undo-delta
+ ;; position. This edge case is described in the overview
+ ;; comments.
+ (max (car d) (- pos (cdr d)))))))
+
;; Return the first affected buffer position and the delta for an undo element
;; delta is defined as the change in subsequent buffer positions if we *did*
;; the undo.
\f
(defvar filter-buffer-substring-functions nil
- "This variable is a wrapper hook around `filter-buffer-substring'.")
+ "This variable is a wrapper hook around `buffer-substring--filter'.")
(make-obsolete-variable 'filter-buffer-substring-functions
'filter-buffer-substring-function "24.4")
(defvar filter-buffer-substring-function #'buffer-substring--filter
"Function to perform the filtering in `filter-buffer-substring'.
-The function is called with 3 arguments:
-\(BEG END DELETE). The arguments BEG, END, and DELETE are the same
-as those of `filter-buffer-substring' in each case.
-It should return the buffer substring between BEG and END, after filtering.")
+The function is called with the same 3 arguments (BEG END DELETE)
+that `filter-buffer-substring' received. It should return the
+buffer substring between BEG and END, after filtering. If DELETE is
+non-nil, it should delete the text between BEG and END from the buffer.")
(defvar buffer-substring-filters nil
- "List of filter functions for `filter-buffer-substring'.
-Each function must accept a single argument, a string, and return
-a string. The buffer substring is passed to the first function
-in the list, and the return value of each function is passed to
-the next.
+ "List of filter functions for `buffer-substring--filter'.
+Each function must accept a single argument, a string, and return a string.
+The buffer substring is passed to the first function in the list,
+and the return value of each function is passed to the next.
As a special convention, point is set to the start of the buffer text
-being operated on (i.e., the first argument of `filter-buffer-substring')
+being operated on (i.e., the first argument of `buffer-substring--filter')
before these functions are called.")
(make-obsolete-variable 'buffer-substring-filters
'filter-buffer-substring-function "24.1")
(defun filter-buffer-substring (beg end &optional delete)
"Return the buffer substring between BEG and END, after filtering.
-The hook `filter-buffer-substring-function' performs the actual filtering.
-By default, no filtering is done.
-
-If DELETE is non-nil, the text between BEG and END is deleted
-from the buffer.
-
-This function should be used instead of `buffer-substring',
-`buffer-substring-no-properties', or `delete-and-extract-region'
-when you want to allow filtering to take place. For example,
-major or minor modes can use `filter-buffer-substring-function' to
-extract characters that are special to a buffer, and should not
-be copied into other buffers."
+If DELETE is non-nil, delete the text between BEG and END from the buffer.
+
+This calls the function that `filter-buffer-substring-function' specifies
+\(passing the same three arguments that it received) to do the work,
+and returns whatever it does. The default function does no filtering,
+unless a hook has been set.
+
+Use `filter-buffer-substring' instead of `buffer-substring',
+`buffer-substring-no-properties', or `delete-and-extract-region' when
+you want to allow filtering to take place. For example, major or minor
+modes can use `filter-buffer-substring-function' to extract characters
+that are special to a buffer, and should not be copied into other buffers."
(funcall filter-buffer-substring-function beg end delete))
(defun buffer-substring--filter (beg end &optional delete)
+ "Default function to use for `filter-buffer-substring-function'.
+Its arguments and return value are as specified for `filter-buffer-substring'.
+This respects the wrapper hook `filter-buffer-substring-functions',
+and the abnormal hook `buffer-substring-filters'.
+No filtering is done unless a hook says to."
(with-wrapper-hook filter-buffer-substring-functions (beg end delete)
(cond
((or delete buffer-substring-filters)
;;;; Window system cut and paste hooks.
-(defvar interprogram-cut-function nil
+(defvar interprogram-cut-function #'gui-select-text
"Function to call to make a killed region available to other programs.
Most window systems provide a facility for cutting and pasting
text between different programs, such as the clipboard on X and
programs. The function takes one argument, TEXT, which is a
string containing the text which should be made available.")
-(defvar interprogram-paste-function nil
+(defvar interprogram-paste-function #'gui-selection-value
"Function to call to get text cut from other programs.
Most window systems provide a facility for cutting and pasting
text between different programs, such as the clipboard on X and
(if interprogram-cut-function
(funcall interprogram-cut-function string)))
+;; It has been argued that this should work similar to `self-insert-command'
+;; which merges insertions in undo-list in groups of 20 (hard-coded in cmds.c).
+(defcustom kill-append-merge-undo nil
+ "Whether appending to kill ring also makes \\[undo] restore both pieces of text simultaneously."
+ :type 'boolean
+ :group 'killing
+ :version "25.1")
+
(defun kill-append (string before-p)
"Append STRING to the end of the latest kill in the kill ring.
If BEFORE-P is non-nil, prepend STRING to the kill.
+Also removes the last undo boundary in the current buffer,
+ depending on `kill-append-merge-undo'.
If `interprogram-cut-function' is set, pass the resulting kill to it."
(let* ((cur (car kill-ring)))
(kill-new (if before-p (concat string cur) (concat cur string))
(or (= (length cur) 0)
- (equal nil (get-text-property 0 'yank-handler cur))))))
+ (equal nil (get-text-property 0 'yank-handler cur))))
+ (when (and kill-append-merge-undo (not buffer-read-only))
+ (let ((prev buffer-undo-list)
+ (next (cdr buffer-undo-list)))
+ ;; find the next undo boundary
+ (while (car next)
+ (pop next)
+ (pop prev))
+ ;; remove this undo boundary
+ (when prev
+ (setcdr prev (cdr next)))))))
(defcustom yank-pop-change-selection nil
"Whether rotating the kill ring changes the window system selection.
;; Add that string to the kill ring, one way or another.
(if (eq last-command 'kill-region)
(kill-append string (< end beg))
- (kill-new string nil)))
+ (kill-new string)))
(when (or string (eq last-command 'kill-region))
(setq this-command 'kill-region))
(setq deactivate-mark t)
(signal 'mark-inactive nil)))
;; Behind display-selections-p.
-(declare-function x-selection-owner-p "xselect.c"
- (&optional selection terminal))
-(declare-function x-selection-exists-p "xselect.c"
- (&optional selection terminal))
(defun deactivate-mark (&optional force)
"Deactivate the mark.
;; the region prior to the last command modifying the buffer.
;; Set the selection to that, or to the current region.
(cond (saved-region-selection
- (x-set-selection 'PRIMARY saved-region-selection)
+ (gui-set-selection 'PRIMARY saved-region-selection)
(setq saved-region-selection nil))
;; If another program has acquired the selection, region
;; deactivation should not clobber it (Bug#11772).
((and (/= (region-beginning) (region-end))
- (or (x-selection-owner-p 'PRIMARY)
- (null (x-selection-exists-p 'PRIMARY))))
- (x-set-selection 'PRIMARY
- (funcall region-extract-function nil)))))
+ (or (gui-call gui-selection-owner-p 'PRIMARY)
+ (null (gui-call gui-selection-exists-p 'PRIMARY))))
+ (gui-set-selection 'PRIMARY
+ (funcall region-extract-function nil)))))
(when mark-active (force-mode-line-update)) ;Refresh toolbar (bug#16382).
- (if (and (null force)
- (or (eq transient-mark-mode 'lambda)
- (and (eq (car-safe transient-mark-mode) 'only)
- (null (cdr transient-mark-mode)))))
- ;; When deactivating a temporary region, don't change
- ;; `mark-active' or run `deactivate-mark-hook'.
- (setq transient-mark-mode nil)
- (if (eq (car-safe transient-mark-mode) 'only)
- (setq transient-mark-mode (cdr transient-mark-mode)))
- (setq mark-active nil)
- (run-hooks 'deactivate-mark-hook))
+ (cond
+ ((eq (car-safe transient-mark-mode) 'only)
+ (setq transient-mark-mode (cdr transient-mark-mode))
+ (if (eq transient-mark-mode (default-value 'transient-mark-mode))
+ (kill-local-variable 'transient-mark-mode)))
+ ((eq transient-mark-mode 'lambda)
+ (kill-local-variable 'transient-mark-mode)))
+ (setq mark-active nil)
+ (run-hooks 'deactivate-mark-hook)
(redisplay--update-region-highlight (selected-window))))
(defun activate-mark (&optional no-tmm)
(force-mode-line-update) ;Refresh toolbar (bug#16382).
(setq mark-active t)
(unless (or transient-mark-mode no-tmm)
- (setq transient-mark-mode 'lambda))
+ (setq-local transient-mark-mode 'lambda))
(run-hooks 'activate-mark-hook))))
(defun set-mark (pos)
purposes. See the documentation of `set-mark' for more information."
(interactive "P")
(cond ((eq transient-mark-mode 'lambda)
- (setq transient-mark-mode nil))
+ (kill-local-variable 'transient-mark-mode))
((eq (car-safe transient-mark-mode) 'only)
(deactivate-mark)))
(cond
(if arg
(pop-to-mark-command)
(push-mark-command t)))
- ((and set-mark-command-repeat-pop
- (eq last-command 'pop-to-mark-command))
- (setq this-command 'pop-to-mark-command)
- (pop-to-mark-command))
((and set-mark-command-repeat-pop
(eq last-command 'pop-global-mark)
(not arg))
(setq this-command 'pop-global-mark)
(pop-global-mark))
- (arg
+ ((or (and set-mark-command-repeat-pop
+ (eq last-command 'pop-to-mark-command))
+ arg)
(setq this-command 'pop-to-mark-command)
(pop-to-mark-command))
((eq last-command 'set-mark-command)
(set-mark (point))
(goto-char omark)
(cond (temp-highlight
- (setq transient-mark-mode (cons 'only transient-mark-mode)))
+ (setq-local transient-mark-mode (cons 'only transient-mark-mode)))
((or (and arg (region-active-p)) ; (xor arg (not (region-active-p)))
(not (or arg (region-active-p))))
(deactivate-mark))
(cond ((and shift-select-mode this-command-keys-shift-translated)
(unless (and mark-active
(eq (car-safe transient-mark-mode) 'only))
- (setq transient-mark-mode
- (cons 'only
- (unless (eq transient-mark-mode 'lambda)
- transient-mark-mode)))
+ (setq-local transient-mark-mode
+ (cons 'only
+ (unless (eq transient-mark-mode 'lambda)
+ transient-mark-mode)))
(push-mark nil nil t)))
((eq (car-safe transient-mark-mode) 'only)
(setq transient-mark-mode (cdr transient-mark-mode))
+ (if (eq transient-mark-mode (default-value 'transient-mark-mode))
+ (kill-local-variable 'transient-mark-mode))
(deactivate-mark))))
(define-minor-mode transient-mark-mode
or \"mark.*active\" at the prompt."
:global t
;; It's defined in C/cus-start, this stops the d-m-m macro defining it again.
- :variable transient-mark-mode)
+ :variable (default-value 'transient-mark-mode))
(defvar widen-automatically t
"Non-nil means it is ok for commands to call `widen' when they want to.
`most-positive-fixnum'.")
(defcustom line-move-ignore-invisible t
- "Non-nil means \\[next-line] and \\[previous-line] ignore invisible lines.
+ "Non-nil means commands that move by lines ignore invisible newlines.
+When this option is non-nil, \\[next-line], \\[previous-line], \\[move-end-of-line], and \\[move-beginning-of-line] behave
+as if newlines that are invisible didn't exist, and count
+only visible newlines. Thus, moving across across 2 newlines
+one of which is invisible will be counted as a one-line move.
+Also, a non-nil value causes invisible text to be ignored when
+counting columns for the purposes of keeping point in the same
+column by \\[next-line] and \\[previous-line].
+
Outline mode sets this."
:type 'boolean
:group 'editing-basics)
0)
0)))
(if (floatp lsp)
- (setq lsp (* dfh lsp)))
+ (setq lsp (truncate (* (frame-char-height) lsp))))
(+ dfh lsp)))
(defun window-screen-lines ()
for `line-spacing', if any, defined for the window's buffer or frame.
The value is a floating-point number."
- (let ((canonical (window-text-height))
- (fch (frame-char-height))
+ (let ((edges (window-inside-pixel-edges))
(dlh (default-line-height)))
- (/ (* (float canonical) fch) dlh)))
+ (/ (float (- (nth 3 edges) (nth 1 edges))) dlh)))
;; Returns non-nil if partial move was done.
(defun line-move-partial (arg noerror to-end)
and drag it forward past ARG other characters (backward if ARG negative).
If no argument and at end of line, the previous two chars are exchanged."
(interactive "*P")
- (and (null arg) (eolp) (forward-char -1))
+ (when (and (null arg) (eolp) (not (bobp))
+ (not (get-text-property (1- (point)) 'read-only)))
+ (forward-char -1))
(transpose-subr 'forward-char (prefix-numeric-value arg)))
(defun transpose-words (arg)
(kmacro-keyboard-quit))
(when completion-in-region-mode
(completion-in-region-mode -1))
+ ;; Force the next redisplay cycle to remove the "Def" indicator from
+ ;; all the mode lines.
+ (if defining-kbd-macro
+ (force-mode-line-update t))
(setq defining-kbd-macro nil)
(let ((debug-on-quit nil))
(signal 'quit nil)))
(define-key map "\e\e\e" 'delete-completion-window)
(define-key map [left] 'previous-completion)
(define-key map [right] 'next-completion)
+ (define-key map [?\t] 'next-completion)
+ (define-key map [backtab] 'previous-completion)
(define-key map "q" 'quit-window)
(define-key map "z" 'kill-this-buffer)
map)
This is always done when called interactively.
Optional third arg NORECORD non-nil means do not put this buffer at the
-front of the list of recently selected ones."
+front of the list of recently selected ones.
+
+Returns the newly created indirect buffer."
(interactive
(progn
(if (get major-mode 'no-clone-indirect)