Other major modes are defined by comparison with this one."
(interactive)
(kill-all-local-variables)
- (run-mode-hooks 'fundamental-mode-hook))
+ (unless delay-mode-hooks
+ (run-hooks 'after-change-major-mode-hook)))
;; Special major modes to view specially formatted data rather than files.
(let ((map (make-sparse-keymap)))
(suppress-keymap map)
(define-key map "q" 'quit-window)
- (define-key map " " 'scroll-up)
- (define-key map "\C-?" 'scroll-down)
+ (define-key map " " 'scroll-up-command)
+ (define-key map "\C-?" 'scroll-down-command)
(define-key map "?" 'describe-mode)
(define-key map "h" 'describe-mode)
(define-key map ">" 'end-of-buffer)
(defun mark-whole-buffer ()
"Put point at beginning and mark at end of buffer.
+If narrowing is in effect, only uses the accessible part of the buffer.
You probably should not use this function in Lisp programs;
it is usually a mistake for a Lisp function to use any subroutine
that uses or sets the mark."
(forward-line (1- line)))))
(defun count-words-region (start end)
- "Count the number of words in the active region.
-If the region is not active, counts the number of words in the buffer."
- (interactive (if (use-region-p) (list (region-beginning) (region-end))
- (list (point-min) (point-max))))
- (let ((count 0))
+ "Return the number of words between START and END.
+If called interactively, print a message reporting the number of
+lines, words, and characters in the region."
+ (interactive "r")
+ (let ((words 0))
(save-excursion
(save-restriction
(narrow-to-region start end)
(goto-char (point-min))
(while (forward-word 1)
- (setq count (1+ count)))))
+ (setq words (1+ words)))))
(when (called-interactively-p 'interactive)
- (message "%s has %d words"
- (if (use-region-p) "Region" "Buffer")
- count))
- count))
-
-(defun count-lines-region (start end)
- "Print number of lines and characters in the region."
- (interactive "r")
- (message "Region has %d lines, %d characters"
- (count-lines start end) (- end start)))
+ (count-words--message "Region"
+ (count-lines start end)
+ words
+ (- end start)))
+ words))
+
+(defun count-words ()
+ "Display the number of lines, words, and characters in the buffer.
+In Transient Mark mode when the mark is active, display the
+number of lines, words, and characters in the region."
+ (interactive)
+ (if (use-region-p)
+ (call-interactively 'count-words-region)
+ (let* ((beg (point-min))
+ (end (point-max))
+ (lines (count-lines beg end))
+ (words (count-words-region beg end))
+ (chars (- end beg)))
+ (count-words--message "Buffer" lines words chars))))
+
+(defun count-words--message (str lines words chars)
+ (message "%s has %d line%s, %d word%s, and %d character%s."
+ str
+ lines (if (= lines 1) "" "s")
+ words (if (= words 1) "" "s")
+ chars (if (= chars 1) "" "s")))
+
+(defalias 'count-lines-region 'count-words-region)
(defun what-line ()
"Print the current buffer line number and narrowed line number of point."
in *Help* buffer. See also the command `describe-char'."
(interactive "P")
(let* ((char (following-char))
+ (bidi-fixer
+ (cond ((memq char '(?\x202a ?\x202b ?\x202d ?\x202e))
+ ;; If the character is one of LRE, LRO, RLE, RLO, it
+ ;; will start a directional embedding, which could
+ ;; completely disrupt the rest of the line (e.g., RLO
+ ;; will display the rest of the line right-to-left).
+ ;; So we put an invisible PDF character after these
+ ;; characters, to end the embedding, which eliminates
+ ;; any effects on the rest of the line.
+ (propertize (string ?\x202c) 'invisible t))
+ ;; Strong right-to-left characters cause reordering of
+ ;; the following numerical characters which show the
+ ;; codepoint, so append LRM to countermand that.
+ ((memq (get-char-code-property char 'bidi-class) '(R AL))
+ (propertize (string ?\x200e) 'invisible t))
+ (t
+ "")))
(beg (point-min))
(end (point-max))
(pos (point))
;; We show the detailed information about CHAR.
(describe-char (point)))
(if (or (/= beg 1) (/= end (1+ total)))
- (message "Char: %s %s point=%d of %d (%d%%) <%d-%d> column=%d%s"
+ (message "Char: %s%s %s point=%d of %d (%d%%) <%d-%d> column=%d%s"
(if (< char 256)
(single-key-description char)
(buffer-substring-no-properties (point) (1+ (point))))
+ bidi-fixer
encoding-msg pos total percent beg end col hscroll)
- (message "Char: %s %s point=%d of %d (%d%%) column=%d%s"
+ (message "Char: %s%s %s point=%d of %d (%d%%) column=%d%s"
(if enable-multibyte-characters
(if (< char 128)
(single-key-description char)
(buffer-substring-no-properties (point) (1+ (point))))
(single-key-description char))
- encoding-msg pos total percent col hscroll))))))
+ bidi-fixer encoding-msg pos total percent col hscroll))))))
\f
;; Initialize read-expression-map. It is defined at C level.
(let ((m (make-sparse-keymap)))
(push (eval eval-expression-arg lexical-binding) values)
(let ((old-value (make-symbol "t")) new-value)
;; Bind debug-on-error to something unique so that we can
- ;; detect when evaled code changes it.
+ ;; detect when evalled code changes it.
(let ((debug-on-error old-value))
(push (eval eval-expression-arg lexical-binding) values)
(setq new-value debug-on-error))
- ;; If evaled code has changed the value of debug-on-error,
+ ;; If evalled code has changed the value of debug-on-error,
;; propagate that change to the global binding.
(unless (eq old-value new-value)
(setq debug-on-error new-value))))
n)
;; next-matching-history-element always puts us at (point-min).
;; Move to the position we were at before changing the buffer contents.
- ;; This is still sensical, because the text before point has not changed.
+ ;; This is still sensible, because the text before point has not changed.
(goto-char point-at-start)))
(defun previous-complete-history-element (n)
1))
1)))
;; Don't use the echo area if the output buffer is
- ;; already dispayed in the selected frame.
+ ;; already displayed in the selected frame.
(not (get-buffer-window (current-buffer))))
;; Echo area
(goto-char (point-max))
Per default, this variable is always set to `t', meaning that a
call of `process-file' could potentially change any file on a
remote host. When set to `nil', a file handler could optimize
-its behaviour with respect to remote file attributes caching.
+its behavior with respect to remote file attributes caching.
This variable should never be changed by `setq'. Instead of, it
shall be set only by let-binding.")
(defvar filter-buffer-substring-functions nil
"Wrapper hook around `filter-buffer-substring'.
-The functions on this special hook are called with 4 arguments:
+The functions on this special hook are called with four arguments:
NEXT-FUN BEG END DELETE
-NEXT-FUN is a function of 3 arguments (BEG END DELETE)
-that performs the default operation. The other 3 arguments are like
-the ones passed to `filter-buffer-substring'.")
+NEXT-FUN is a function of three arguments (BEG END DELETE)
+that performs the default operation. The other three arguments
+are like the ones passed to `filter-buffer-substring'.")
(defvar buffer-substring-filters nil
"List of filter functions for `filter-buffer-substring'.
(define-minor-mode transient-mark-mode
"Toggle Transient Mark mode.
-With ARG, turn Transient Mark mode on if ARG is positive, off otherwise.
+With a prefix argument ARG, enable Transient Mark mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+Transient Mark mode if ARG is omitted or nil.
-In Transient Mark mode, when the mark is active, the region is highlighted.
-Changing the buffer \"deactivates\" the mark.
-So do certain other operations that set the mark
-but whose main purpose is something else--for example,
-incremental search, \\[beginning-of-buffer], and \\[end-of-buffer].
+Transient Mark mode is a global minor mode. When enabled, the
+region is highlighted whenever the mark is active. The mark is
+\"deactivated\" by changing the buffer, and after certain other
+operations that set the mark but whose main purpose is something
+else--for example, incremental search, \\[beginning-of-buffer], and \\[end-of-buffer].
You can also deactivate the mark by typing \\[keyboard-quit] or
\\[keyboard-escape-quit].
If nil, `line-move' moves point by logical lines.
A non-nil setting of `goal-column' overrides the value of this variable
and forces movement by logical lines.
-Disabling `auto-hscroll-mode' also overrides forces movement by logical
-lines when the window is horizontally scrolled."
+A window that is horizontally scrolled also forces movement by logical
+lines."
:type 'boolean
:group 'editing-basics
:version "23.1")
(when (> rbot 0)
(set-window-vscroll nil (+ vs (min rbot (frame-char-height))) t)))
;; If cursor just entered the bottom scroll margin, move forward,
- ;; but also vscroll one line so redisplay wont recenter.
+ ;; but also vscroll one line so redisplay won't recenter.
((and (> vpos 0)
(= py (min (- (window-text-height) scroll-margin 1)
(1- vpos))))
(if (and line-move-visual
;; Display-based column are incompatible with goal-column.
(not goal-column)
- ;; When auto-hscroll-mode is turned off and the text in
- ;; the window is scrolled to the left, display-based
- ;; motion doesn't make sense (because each logical line
- ;; occupies exactly one screen line).
- (not (and (null auto-hscroll-mode)
- (> (window-hscroll) 0))))
+ ;; When the text in the window is scrolled to the left,
+ ;; display-based motion doesn't make sense (because each
+ ;; logical line occupies exactly one screen line).
+ (not (> (window-hscroll) 0)))
(line-move-visual arg noerror)
(line-move-1 arg noerror to-end))))
(let ((line-move-visual nil))
(line-move (1- arg) t)))
- ;; Move to beginning-of-line, ignoring fields and invisibles.
+ ;; Move to beginning-of-line, ignoring fields and invisible text.
(skip-chars-backward "^\n")
(while (and (not (bobp)) (invisible-p (1- (point))))
(goto-char (previous-char-property-change (point)))
(defvar visual-line--saved-state nil)
(define-minor-mode visual-line-mode
- "Redefine simple editing commands to act on visual lines, not logical lines.
-This also turns on `word-wrap' in the buffer."
+ "Toggle visual line based editing (Visual Line mode).
+With a prefix argument ARG, enable Visual Line mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+the mode if ARG is omitted or nil.
+
+When Visual Line mode is enabled, `word-wrap' is turned on in
+this buffer, and simple editing commands are redefined to act on
+visual lines, not logical lines. See Info node `Visual Line
+Mode' for details."
:keymap visual-line-mode-map
:group 'visual-line
:lighter " Wrap"
(put 'auto-fill-function 'safe-local-variable 'null)
(define-minor-mode auto-fill-mode
- "Toggle Auto Fill mode.
-With ARG, turn Auto Fill mode on if and only if ARG is positive.
-In Auto Fill mode, inserting a space at a column beyond `current-fill-column'
-automatically breaks the line at a previous space.
+ "Toggle automatic line breaking (Auto Fill mode).
+With a prefix argument ARG, enable Auto Fill mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+the mode if ARG is omitted or nil.
+
+When Auto Fill mode is enabled, inserting a space at a column
+beyond `current-fill-column' automatically breaks the line at a
+previous space.
When `auto-fill-mode' is on, the `auto-fill-function' variable is
non-`nil'.
"The string displayed in the mode line when in binary overwrite mode.")
(define-minor-mode overwrite-mode
- "Toggle overwrite mode.
-With prefix argument ARG, turn overwrite mode on if ARG is positive,
-otherwise turn it off. In overwrite mode, printing characters typed
-in replace existing text on a one-for-one basis, rather than pushing
-it to the right. At the end of a line, such characters extend the line.
-Before a tab, such characters insert until the tab is filled in.
-\\[quoted-insert] still inserts characters in overwrite mode; this
-is supposed to make it easier to insert characters when necessary."
+ "Toggle Overwrite mode.
+With a prefix argument ARG, enable Overwrite mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+the mode if ARG is omitted or nil.
+
+When Overwrite mode is enabled, printing characters typed in
+replace existing text on a one-for-one basis, rather than pushing
+it to the right. At the end of a line, such characters extend
+the line. Before a tab, such characters insert until the tab is
+filled in. \\[quoted-insert] still inserts characters in
+overwrite mode; this is supposed to make it easier to insert
+characters when necessary."
:variable (eq overwrite-mode 'overwrite-mode-textual))
(define-minor-mode binary-overwrite-mode
- "Toggle binary overwrite mode.
-With prefix argument ARG, turn binary overwrite mode on if ARG is
-positive, otherwise turn it off. In binary overwrite mode, printing
-characters typed in replace existing text. Newlines are not treated
-specially, so typing at the end of a line joins the line to the next,
-with the typed character between them. Typing before a tab character
-simply replaces the tab with the character typed. \\[quoted-insert]
-replaces the text at the cursor, just as ordinary typing characters do.
-
-Note that binary overwrite mode is not its own minor mode; it is a
-specialization of overwrite mode, entered by setting the
+ "Toggle Binary Overwrite mode.
+With a prefix argument ARG, enable Binary Overwrite mode if ARG
+is positive, and disable it otherwise. If called from Lisp,
+enable the mode if ARG is omitted or nil.
+
+When Binary Overwrite mode is enabled, printing characters typed
+in replace existing text. Newlines are not treated specially, so
+typing at the end of a line joins the line to the next, with the
+typed character between them. Typing before a tab character
+simply replaces the tab with the character typed.
+\\[quoted-insert] replaces the text at the cursor, just as
+ordinary typing characters do.
+
+Note that Binary Overwrite mode is not its own minor mode; it is
+a specialization of overwrite mode, entered by setting the
`overwrite-mode' variable to `overwrite-mode-binary'."
:variable (eq overwrite-mode 'overwrite-mode-binary))
(define-minor-mode line-number-mode
- "Toggle Line Number mode.
-With ARG, turn Line Number mode on if ARG is positive, otherwise
-turn it off. When Line Number mode is enabled, the line number
-appears in the mode line.
+ "Toggle line number display in the mode line (Line Number mode).
+With a prefix argument ARG, enable Line Number mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+the mode if ARG is omitted or nil.
Line numbers do not appear for very large buffers and buffers
with very long lines; see variables `line-number-display-limit'
:init-value t :global t :group 'mode-line)
(define-minor-mode column-number-mode
- "Toggle Column Number mode.
-With ARG, turn Column Number mode on if ARG is positive,
-otherwise turn it off. When Column Number mode is enabled, the
-column number appears in the mode line."
+ "Toggle column number display in the mode line (Column Number mode).
+With a prefix argument ARG, enable Column Number mode if ARG is
+positive, and disable it otherwise.
+
+If called from Lisp, enable the mode if ARG is omitted or nil."
:global t :group 'mode-line)
(define-minor-mode size-indication-mode
- "Toggle Size Indication mode.
-With ARG, turn Size Indication mode on if ARG is positive,
-otherwise turn it off. When Size Indication mode is enabled, the
-size of the accessible part of the buffer appears in the mode line."
+ "Toggle buffer size display in the mode line (Size Indication mode).
+With a prefix argument ARG, enable Size Indication mode if ARG is
+positive, and disable it otherwise.
+
+If called from Lisp, enable the mode if ARG is omitted or nil."
:global t :group 'mode-line)
(define-minor-mode auto-save-mode
- "Toggle auto-saving of contents of current buffer.
-With prefix argument ARG, turn auto-saving on if positive, else off."
+ "Toggle auto-saving in the current buffer (Auto Save mode).
+With a prefix argument ARG, enable Auto Save mode if ARG is
+positive, and disable it otherwise.
+
+If called from Lisp, enable the mode if ARG is omitted or nil."
:variable ((and buffer-auto-save-file-name
;; If auto-save is off because buffer has shrunk,
;; then toggling should turn it on.
(defvar buffer-quit-function nil
"Function to call to \"quit\" the current buffer, or nil if none.
\\[keyboard-escape-quit] calls this function when its more local actions
-\(such as cancelling a prefix argument, minibuffer or region) do not apply.")
+\(such as canceling a prefix argument, minibuffer or region) do not apply.")
(defun keyboard-escape-quit ()
"Exit the current \"mode\" (in a generalized sense of the word).
(defvar completion-list-insert-choice-function #'completion--replace
"Function to use to insert the text chosen in *Completions*.
-Called with 3 arguments (BEG END TEXT), it should replace the text
+Called with three arguments (BEG END TEXT), it should replace the text
between BEG and END with TEXT. Expected to be set buffer-locally
in the *Completions* buffer.")
choice buffer base-position nil)
;; This remove-text-properties should be unnecessary since `choice'
;; comes from buffer-substring-no-properties.
- ;;(remove-text-properties 0 (lenth choice) '(mouse-face nil) choice)
+ ;;(remove-text-properties 0 (length choice) '(mouse-face nil) choice)
;; Insert the completion into the buffer where it was requested.
(funcall (or insert-function completion-list-insert-choice-function)
(or (car base-position) (point))
(define-minor-mode normal-erase-is-backspace-mode
"Toggle the Erase and Delete mode of the Backspace and Delete keys.
-
-With numeric ARG, turn the mode on if and only if ARG is positive.
+With a prefix argument ARG, enable this feature if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+the mode if ARG is omitted or nil.
On window systems, when this mode is on, Delete is mapped to C-d
and Backspace is mapped to DEL; when this mode is off, both
"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 if ARG is positive, otherwise
-turn it off.
+ "Toggle making all invisible text temporarily visible (Visible mode).
+With a prefix argument ARG, enable Visible mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+the mode if ARG is omitted or nil.
-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."
+This mode works by saving the value of `buffer-invisibility-spec'
+and setting it to nil."
:lighter " Vis"
:group 'editing-basics
(when (local-variable-p 'vis-mode-saved-buffer-invisibility-spec)
HCoop / bpt / emacs.git / blobdiff