text-property `hard'.
With ARG, insert that many newlines.
Call `auto-fill-function' if the current column number is greater
-than the value of `fill-column' and ARG is `nil'."
+than the value of `fill-column' and ARG is nil."
(interactive "*P")
(barf-if-buffer-read-only)
;; Inserting a newline at the end of a line produces better redisplay in
(insert-and-inherit char)
(setq arg (1- arg)))))
-(defun forward-to-indentation (arg)
+(defun forward-to-indentation (&optional arg)
"Move forward ARG lines and position at first nonblank character."
(interactive "p")
- (forward-line arg)
+ (forward-line (or arg 1))
(skip-chars-forward " \t"))
-(defun backward-to-indentation (arg)
+(defun backward-to-indentation (&optional arg)
"Move backward ARG lines and position at first nonblank character."
(interactive "p")
- (forward-line (- arg))
+ (forward-line (- (or arg 1)))
(skip-chars-forward " \t"))
(defun back-to-indentation ()
"Move point to the first non-whitespace character on this line."
(interactive)
(beginning-of-line 1)
- (let ((limit (line-end-position)))
- (skip-syntax-forward " " limit))
+ (skip-syntax-forward " " (line-end-position))
;; Move back over chars that have whitespace syntax but have the p flag.
(backward-prefix-chars))
(let ((print-length eval-expression-print-length)
(print-level eval-expression-print-level))
- (prin1 (car values)
- (if eval-expression-insert-value (current-buffer) t))))
+ (if eval-expression-insert-value
+ (with-no-warnings
+ (eval-last-sexp-print-value (car values)))
+ (prin1 (car values) t))))
(defun edit-and-eval-command (prompt command)
"Prompting with PROMPT, let user edit COMMAND and eval result.
;Put this on C-x u, so we can force that rather than C-_ into startup msg
(defalias 'advertised-undo 'undo)
+(defconst undo-equiv-table (make-hash-table :test 'eq :weakness t)
+ "Table mapping redo records to the corresponding undo one.")
+
+(defvar undo-in-region nil
+ "Non-nil if `pending-undo-list' is not just a tail of `buffer-undo-list'.")
+
+(defvar undo-no-redo nil
+ "If t, `undo' doesn't go through redo entries.")
+
(defun undo (&optional arg)
"Undo some previous changes.
Repeat this command to undo more changes.
A numeric argument serves as a repeat count.
In Transient Mark mode when the mark is active, only undo changes within
-the current region. Similarly, when not in Transient Mark mode, just C-u
+the current region. Similarly, when not in Transient Mark mode, just \\[universal-argument]
as an argument limits undo to changes within the current region."
(interactive "*P")
;; Make last-command indicate for the next command that this was an undo.
(setq this-command 'undo)
(let ((modified (buffer-modified-p))
(recent-save (recent-auto-save-p)))
- (or (eq (selected-window) (minibuffer-window))
- (message (if (and transient-mark-mode mark-active)
- "Undo in region!"
- "Undo!")))
(unless (eq last-command 'undo)
- (if (if transient-mark-mode mark-active (and arg (not (numberp arg))))
+ (setq undo-in-region
+ (if transient-mark-mode mark-active (and arg (not (numberp arg)))))
+ (if undo-in-region
(undo-start (region-beginning) (region-end))
(undo-start))
;; get rid of initial undo boundary
(undo-more 1))
+ ;; Check to see whether we're hitting a redo record, and if
+ ;; so, ask the user whether she wants to skip the redo/undo pair.
+ (let ((equiv (gethash pending-undo-list undo-equiv-table)))
+ (or (eq (selected-window) (minibuffer-window))
+ (message (if undo-in-region
+ (if equiv "Redo in region!" "Undo in region!")
+ (if equiv "Redo!" "Undo!"))))
+ (when (and equiv undo-no-redo)
+ ;; The equiv entry might point to another redo record if we have done
+ ;; undo-redo-undo-redo-... so skip to the very last equiv.
+ (while (let ((next (gethash equiv undo-equiv-table)))
+ (if next (setq equiv next))))
+ (setq pending-undo-list equiv)))
(undo-more
(if (or transient-mark-mode (numberp arg))
(prefix-numeric-value arg)
1))
+ ;; Record the fact that the just-generated undo records come from an
+ ;; undo operation, so we can skip them later on.
+ ;; I don't know how to do that in the undo-in-region case.
+ (unless undo-in-region
+ (puthash buffer-undo-list pending-undo-list undo-equiv-table))
;; Don't specify a position in the undo record for the undo command.
;; Instead, undoing this should move point to where the change is.
(let ((tail buffer-undo-list)
(while (car tail)
(when (integerp (car tail))
(let ((pos (car tail)))
- (if (null prev)
- (setq buffer-undo-list (cdr tail))
- (setcdr prev (cdr tail)))
+ (if prev
+ (setcdr prev (cdr tail))
+ (setq buffer-undo-list (cdr tail)))
(setq tail (cdr tail))
(while (car tail)
(if (eq pos (car tail))
(and modified (not (buffer-modified-p))
(delete-auto-save-file-if-necessary recent-save))))
+(defun undo-only (&optional arg)
+ "Undo some previous changes.
+Repeat this command to undo more changes.
+A numeric argument serves as a repeat count.
+Contrary to `undo', this will not redo a previous undo."
+ (interactive "*p")
+ (let ((undo-no-redo t)) (undo arg)))
+;; Richard said that we should not use C-x <uppercase letter> and I have
+;; no idea whereas to bind it. Any suggestion welcome. -stef
+;; (define-key ctl-x-map "U" 'undo-only)
+
(defvar pending-undo-list nil
"Within a run of consecutive undo commands, list remaining to be undone.")
(if (yes-or-no-p "A command is running. Kill it? ")
(kill-process proc)
(error "Shell command in progress")))
- (save-excursion
- (set-buffer buffer)
+ (with-current-buffer buffer
(setq buffer-read-only nil)
(erase-buffer)
(display-buffer buffer)
argument should still be a \"useful\" string for such uses."
(if (> (length string) 0)
(if yank-handler
- (put-text-property 0 1 'yank-handler yank-handler string)
- (remove-list-of-text-properties 0 1 '(yank-handler) string))
+ (put-text-property 0 1 'yank-handler yank-handler string))
(if yank-handler
(signal 'args-out-of-range
(list string "yank-handler specified for empty string"))))
(if (eq last-command 'kill-region)
(kill-append string (< end beg) yank-handler)
(kill-new string nil yank-handler)))
- (setq this-command 'kill-region))
+ (when (or string (eq last-command 'kill-region))
+ (setq this-command 'kill-region)))
((buffer-read-only text-read-only)
;; The code above failed because the buffer, or some of the characters
;; in the region, are read-only.
(defcustom yank-excluded-properties
'(read-only invisible intangible field mouse-face help-echo local-map keymap
yank-handler)
- "*Text properties to discard when yanking."
+ "*Text properties to discard when yanking.
+The value should be a list of text properties to discard or t,
+which means to discard all text properties."
:type '(choice (const :tag "All" t) (repeat symbol))
:group 'editing
:version "21.4")
(goto-char end))))
(point))))
+(defun kill-whole-line (&optional arg)
+ "Kill current line.
+With prefix arg, kill that many lines starting from the current line.
+If arg is negative, kill backward. Also kill the preceding newline.
+\(This is meant to make C-x z work well with negative arguments.\)
+If arg is zero, kill current line but exclude the trailing newline."
+ (interactive "P")
+ (setq arg (prefix-numeric-value arg))
+ (if (and (> arg 0) (eobp) (save-excursion (forward-visible-line 0) (eobp)))
+ (signal 'end-of-buffer nil))
+ (if (and (< arg 0) (bobp) (save-excursion (end-of-visible-line) (bobp)))
+ (signal 'beginning-of-buffer nil))
+ (unless (eq last-command 'kill-region)
+ (kill-new "")
+ (setq last-command 'kill-region))
+ (cond ((zerop arg)
+ ;; We need to kill in two steps, because the previous command
+ ;; could have been a kill command, in which case the text
+ ;; before point needs to be prepended to the current kill
+ ;; ring entry and the text after point appended. Also, we
+ ;; need to use save-excursion to avoid copying the same text
+ ;; twice to the kill ring in read-only buffers.
+ (save-excursion
+ (kill-region (point) (progn (forward-visible-line 0) (point))))
+ (kill-region (point) (progn (end-of-visible-line) (point))))
+ ((< arg 0)
+ (save-excursion
+ (kill-region (point) (progn (end-of-visible-line) (point))))
+ (kill-region (point)
+ (progn (forward-visible-line (1+ arg))
+ (unless (bobp) (backward-char))
+ (point))))
+ (t
+ (save-excursion
+ (kill-region (point) (progn (forward-visible-line 0) (point))))
+ (kill-region (point)
+ (progn (forward-visible-line arg) (point))))))
(defun forward-visible-line (arg)
"Move forward by ARG lines, ignoring currently invisible newlines only.
(unless (bolp)
(goto-char opoint))))
(let ((first t))
- (while (or first (< arg 0))
- (if (zerop arg)
+ (while (or first (<= arg 0))
+ (if first
(beginning-of-line)
(or (zerop (forward-line -1))
(signal 'beginning-of-buffer nil)))
(unless (bobp)
(let ((prop
(get-char-property (1- (point)) 'invisible)))
- (if (if (eq buffer-invisibility-spec t)
- prop
- (or (memq prop buffer-invisibility-spec)
- (assq prop buffer-invisibility-spec)))
- (setq arg (1+ arg)))))
- (setq first nil)
- (setq arg (1+ arg)))
+ (unless (if (eq buffer-invisibility-spec t)
+ prop
+ (or (memq prop buffer-invisibility-spec)
+ (assq prop buffer-invisibility-spec)))
+ (setq arg (1+ arg)))))
+ (setq first nil))
;; If invisible text follows, and it is a number of complete lines,
;; skip it.
(let ((opoint (point)))
BUFFER may be a buffer or a buffer name.
This function is meant for the user to run interactively.
-Don't call it from programs!"
+Don't call it from programs: use `insert-buffer-substring' instead!"
(interactive
(list
(progn
(other-buffer (current-buffer))
(window-buffer (next-window (selected-window))))
t))))
- (or (bufferp buffer)
- (setq buffer (get-buffer buffer)))
- (let (start end newmark)
- (save-excursion
- (save-excursion
- (set-buffer buffer)
- (setq start (point-min) end (point-max)))
- (insert-buffer-substring buffer start end)
- (setq newmark (point)))
- (push-mark newmark))
+ (push-mark
+ (save-excursion
+ (insert-buffer-substring (get-buffer buffer))
+ (point)))
nil)
(defun append-to-buffer (buffer start end)
purposes. See the documentation of `set-mark' for more information.
In Transient Mark mode, this does not activate the mark."
- (if (null (mark t))
- nil
+ (unless (null (mark t))
(setq mark-ring (cons (copy-marker (mark-marker)) mark-ring))
- (if (> (length mark-ring) mark-ring-max)
- (progn
- (move-marker (car (nthcdr mark-ring-max mark-ring)) nil)
- (setcdr (nthcdr (1- mark-ring-max) mark-ring) nil))))
+ (when (> (length mark-ring) mark-ring-max)
+ (move-marker (car (nthcdr mark-ring-max mark-ring)) nil)
+ (setcdr (nthcdr (1- mark-ring-max) mark-ring) nil)))
(set-marker (mark-marker) (or location (point)) (current-buffer))
;; Now push the mark on the global mark ring.
(if (and global-mark-ring
;; Don't push another one.
nil
(setq global-mark-ring (cons (copy-marker (mark-marker)) global-mark-ring))
- (if (> (length global-mark-ring) global-mark-ring-max)
- (progn
- (move-marker (car (nthcdr global-mark-ring-max global-mark-ring))
- nil)
- (setcdr (nthcdr (1- global-mark-ring-max) global-mark-ring) nil))))
+ (when (> (length global-mark-ring) global-mark-ring-max)
+ (move-marker (car (nthcdr global-mark-ring-max global-mark-ring)) nil)
+ (setcdr (nthcdr (1- global-mark-ring-max) global-mark-ring) nil)))
(or nomsg executing-kbd-macro (> (minibuffer-depth) 0)
(message "Mark set"))
(if (or activate (not transient-mark-mode))
(defun pop-mark ()
"Pop off mark ring into the buffer's actual mark.
Does not set point. Does nothing if mark ring is empty."
- (if mark-ring
- (progn
- (setq mark-ring (nconc mark-ring (list (copy-marker (mark-marker)))))
- (set-marker (mark-marker) (+ 0 (car mark-ring)) (current-buffer))
- (deactivate-mark)
- (move-marker (car mark-ring) nil)
- (if (null (mark t)) (ding))
- (setq mark-ring (cdr mark-ring)))))
+ (when mark-ring
+ (setq mark-ring (nconc mark-ring (list (copy-marker (mark-marker)))))
+ (set-marker (mark-marker) (+ 0 (car mark-ring)) (current-buffer))
+ (deactivate-mark)
+ (move-marker (car mark-ring) nil)
+ (if (null (mark t)) (ding))
+ (setq mark-ring (cdr mark-ring))))
(defalias 'exchange-dot-and-mark 'exchange-point-and-mark)
(defun exchange-point-and-mark (&optional arg)
using `forward-line' instead. It is usually easier to use
and more reliable (no dependence on goal column, etc.)."
(interactive "p")
- (unless arg (setq arg 1))
+ (or arg (setq arg 1))
(if (and next-line-add-newlines (= arg 1))
(if (save-excursion (end-of-line) (eobp))
;; When adding a newline, don't expand an abbrev.
`forward-line' with a negative argument instead. It is usually easier
to use and more reliable (no dependence on goal column, etc.)."
(interactive "p")
- (unless arg (setq arg 1))
+ (or arg (setq arg 1))
(if (interactive-p)
(condition-case nil
(line-move (- arg))
(if (> (cdr pos1) (car pos2)) (error "Don't have two things to transpose"))
(atomic-change-group
(let (word2)
+ ;; FIXME: We first delete the two pieces of text, so markers that
+ ;; used to point to after the text end up pointing to before it :-(
(setq word2 (delete-and-extract-region (car pos2) (cdr pos2)))
(goto-char (car pos2))
(insert (delete-and-extract-region (car pos1) (cdr pos1)))
(goto-char (car pos1))
(insert word2))))
\f
-(defun backward-word (arg)
+(defun backward-word (&optional arg)
"Move backward until encountering the beginning of a word.
With argument, do this that many times."
(interactive "p")
- (forward-word (- arg)))
+ (forward-word (- (or arg 1))))
(defun mark-word (arg)
"Set mark arg words away from point.
(interactive "p")
(kill-word (- arg)))
-(defun current-word (&optional strict)
- "Return the word point is on (or a nearby word) as a string.
+(defun current-word (&optional strict really-word)
+ "Return the symbol or word that point is on (or a nearby one) as a string.
+The return value includes no text properties.
If optional arg STRICT is non-nil, return nil unless point is within
-or adjacent to a word."
+or adjacent to a symbol or word.
+The function, belying its name, normally finds a symbol.
+If optional arg REALLY-WORD is non-nil, it finds just a word."
(save-excursion
- (let ((oldpoint (point)) (start (point)) (end (point)))
- (skip-syntax-backward "w_") (setq start (point))
+ (let* ((oldpoint (point)) (start (point)) (end (point))
+ (syntaxes (if really-word "w" "w_"))
+ (not-syntaxes (concat "^" syntaxes)))
+ (skip-syntax-backward syntaxes) (setq start (point))
(goto-char oldpoint)
- (skip-syntax-forward "w_") (setq end (point))
- (if (and (eq start oldpoint) (eq end oldpoint))
- ;; Point is neither within nor adjacent to a word.
- (and (not strict)
- (progn
- ;; Look for preceding word in same line.
- (skip-syntax-backward "^w_"
- (save-excursion (beginning-of-line)
- (point)))
- (if (bolp)
- ;; No preceding word in same line.
- ;; Look for following word in same line.
- (progn
- (skip-syntax-forward "^w_"
- (save-excursion (end-of-line)
- (point)))
- (setq start (point))
- (skip-syntax-forward "w_")
- (setq end (point)))
- (setq end (point))
- (skip-syntax-backward "w_")
- (setq start (point)))
- (buffer-substring-no-properties start end)))
+ (skip-syntax-forward syntaxes) (setq end (point))
+ (when (and (eq start oldpoint) (eq end oldpoint)
+ ;; Point is neither within nor adjacent to a word.
+ (not strict))
+ ;; Look for preceding word in same line.
+ (skip-syntax-backward not-syntaxes
+ (save-excursion (beginning-of-line)
+ (point)))
+ (if (bolp)
+ ;; No preceding word in same line.
+ ;; Look for following word in same line.
+ (progn
+ (skip-syntax-forward not-syntaxes
+ (save-excursion (end-of-line)
+ (point)))
+ (setq start (point))
+ (skip-syntax-forward syntaxes)
+ (setq end (point)))
+ (setq end (point))
+ (skip-syntax-backward syntaxes)
+ (setq start (point))))
+ ;; If we found something nonempty, return it as a string.
+ (unless (= start end)
(buffer-substring-no-properties start end)))))
\f
(defcustom fill-prefix nil
(point)))))
(let* ((oldpos (point))
(blinkpos)
- (mismatch))
+ (mismatch)
+ matching-paren)
(save-excursion
(save-restriction
(if blink-matching-paren-distance
(setq blinkpos (scan-sexps oldpos -1)))
(error nil)))
(and blinkpos
- (/= (char-syntax (char-after blinkpos))
- ?\$)
- (setq mismatch
- (or (null (matching-paren (char-after blinkpos)))
+ (save-excursion
+ (goto-char blinkpos)
+ (not (looking-at "\\s$")))
+ (setq matching-paren
+ (or (and parse-sexp-lookup-properties
+ (let ((prop (get-text-property blinkpos 'syntax-table)))
+ (and (consp prop)
+ (eq (car prop) 4)
+ (cdr prop))))
+ (matching-paren (char-after blinkpos)))
+ mismatch
+ (or (null matching-paren)
(/= (char-after (1- oldpos))
- (matching-paren (char-after blinkpos))))))
+ matching-paren))))
(if mismatch (setq blinkpos nil))
(if blinkpos
;; Don't log messages about paren matching.
;; unless it is reading a file name and CHOICE is a directory,
;; or completion-no-auto-exit is non-nil.
- (let ((buffer (or buffer completion-reference-buffer))
- (mini-p (string-match "\\` \\*Minibuf-[0-9]+\\*\\'"
- (buffer-name buffer))))
+ (let* ((buffer (or buffer completion-reference-buffer))
+ (mini-p (minibufferp buffer)))
;; If BUFFER is a minibuffer, barf unless it's the currently
;; active minibuffer.
(if (and mini-p
(- (point) (minibuffer-prompt-end))))
;; Otherwise, in minibuffer, the whole input is being completed.
(save-match-data
- (if (string-match "\\` \\*Minibuf-[0-9]+\\*\\'"
- (buffer-name mainbuf))
+ (if (minibufferp mainbuf)
(setq completion-base-size 0))))
(goto-char (point-min))
(if (display-mouse-p)
;; to the following event.
(defun event-apply-alt-modifier (ignore-prompt)
- "Add the Alt modifier to the following event.
+ "\\<function-key-map>Add the Alt modifier to the following event.
For example, type \\[event-apply-alt-modifier] & to enter Alt-&."
(vector (event-apply-modifier (read-event) 'alt 22 "A-")))
(defun event-apply-super-modifier (ignore-prompt)
- "Add the Super modifier to the following event.
+ "\\<function-key-map>Add the Super modifier to the following event.
For example, type \\[event-apply-super-modifier] & to enter Super-&."
(vector (event-apply-modifier (read-event) 'super 23 "s-")))
(defun event-apply-hyper-modifier (ignore-prompt)
- "Add the Hyper modifier to the following event.
+ "\\<function-key-map>Add the Hyper modifier to the following event.
For example, type \\[event-apply-hyper-modifier] & to enter Hyper-&."
(vector (event-apply-modifier (read-event) 'hyper 24 "H-")))
(defun event-apply-shift-modifier (ignore-prompt)
- "Add the Shift modifier to the following event.
+ "\\<function-key-map>Add the Shift modifier to the following event.
For example, type \\[event-apply-shift-modifier] & to enter Shift-&."
(vector (event-apply-modifier (read-event) 'shift 25 "S-")))
(defun event-apply-control-modifier (ignore-prompt)
- "Add the Ctrl modifier to the following event.
+ "\\<function-key-map>Add the Ctrl modifier to the following event.
For example, type \\[event-apply-control-modifier] & to enter Ctrl-&."
(vector (event-apply-modifier (read-event) 'control 26 "C-")))
(defun event-apply-meta-modifier (ignore-prompt)
- "Add the Meta modifier to the following event.
+ "\\<function-key-map>Add the Meta modifier to the following event.
For example, type \\[event-apply-meta-modifier] & to enter Meta-&."
(vector (event-apply-modifier (read-event) 'meta 27 "M-")))
(if (interactive-p)
(message "Delete key deletes %s"
(if normal-erase-is-backspace "forward" "backward"))))
-
-
+\f
+(defcustom idle-update-delay 0.5
+ "*Idle time delay before updating various things on the screen.
+Various Emacs features that update auxiliary information when point moves
+wait this many seconds after Emacs becomes idle before doing an update."
+ :type 'number
+ :group 'display
+ :version "21.4")
+\f
+(defvar vis-mode-saved-buffer-invisibility-spec nil
+ "Saved value of `buffer-invisibility-spec' when Visible mode is on.")
+
+(define-minor-mode visible-mode
+ "Toggle Visible mode.
+With argument ARG turn Visible mode on iff ARG is positive.
+
+Enabling Visible mode makes all invisible text temporarily visible.
+Disabling Visible mode turns off that effect. Visible mode
+works by saving the value of `buffer-invisibility-spec' and setting it to nil."
+ :lighter " Vis"
+ (when (local-variable-p 'vis-mode-saved-buffer-invisibility-spec)
+ (setq buffer-invisibility-spec vis-mode-saved-buffer-invisibility-spec)
+ (kill-local-variable 'vis-mode-saved-buffer-invisibility-spec))
+ (when visible-mode
+ (set (make-local-variable 'vis-mode-saved-buffer-invisibility-spec)
+ buffer-invisibility-spec)
+ (setq buffer-invisibility-spec nil)))
+\f
;; Minibuffer prompt stuff.
;(defun minibuffer-prompt-modification (start end)
;
(provide 'simple)
+
+;;; arch-tag: 24af67c0-2a49-44f6-b3b1-312d8b570dfd
;;; simple.el ends here
HCoop / bpt / emacs.git / blobdiff