you can control their functioning.
* Key Bindings:: The keymaps say what command each key runs.
By changing them, you can "redefine keys".
-* Keyboard Translations:: If your keyboard passes an undesired code
- for a key, you can tell Emacs to
- substitute another code.
* Syntax:: The syntax table controls how words and
expressions are parsed.
* Init File:: How to write common customizations in the
given minor mode works this way, use @kbd{C-h v} to ask for
documentation on the variable name.
- These minor-mode variables provide a good way for Lisp programs to turn
-minor modes on and off; they are also useful in a file's local variables
-list. But please think twice before setting minor modes with a local
-variables list, because most minor modes are a matter of user
-preference---other users editing the same file might not want the same
-minor modes you prefer.
+ These minor-mode variables provide a good way for Lisp programs to
+turn minor modes on and off; they are also useful in a file's local
+variables list (@pxref{File Variables}). But please think twice
+before setting minor modes with a local variables list, because most
+minor modes are a matter of user preference---other users editing the
+same file might not want the same minor modes you prefer.
- The buffer-local minor modes include Abbrev mode, Auto Fill mode,
-Auto Save mode, Font-Lock mode, Glasses mode, ISO Accents mode,
-Outline minor mode, Overwrite mode, and Binary Overwrite mode.
+ The most useful buffer-local minor modes include Abbrev mode, Auto
+Fill mode, Auto Save mode, Font-Lock mode, Glasses mode, ISO Accents
+mode, Outline minor mode, Overwrite mode, and Binary Overwrite mode.
Abbrev mode allows you to define abbreviations that automatically expand
as you type them. For example, @samp{amd} might expand to @samp{abbrev
In Binary Overwrite mode, digits after @kbd{C-q} specify an
octal character code, as usual.
- The following minor modes normally apply to all buffers at once.
-Since each is enabled or disabled by the value of a variable, you
-@emph{can} set them differently for particular buffers, by explicitly
-making the corresponding variables local in those buffers.
-@xref{Locals}.
+ Here are some useful minor modes that normally apply to all buffers
+at once. Since each is enabled or disabled by the value of a
+variable, you @emph{can} set them differently for particular buffers,
+by explicitly making the corresponding variables local in those
+buffers. @xref{Locals}.
Icomplete mode displays an indication of available completions when
you are in the minibuffer and completion is active. @xref{Completion
Customization of the One True Editor.
See also [Manual].
-Confirm Kill Emacs: [Hide] [Value Menu] Don't confirm
- [State]: this option is unchanged from its standard setting.
-How to ask for confirmation when leaving Emacs. [More]
-
Editing group: [Go to Group]
Basic text editing facilities.
If you play with adding various different versions of a hook
function by calling @code{add-hook} over and over, remember that all
-the versions you added will remain in the hook variable together.
-To clear them out, you can do @code{(setq @var{hook-variable} nil)}.
+the versions you added will remain in the hook variable together. You
+can clear out individual functions with @code{remove-hook}, or do
+@code{(setq @var{hook-variable} nil)} to remove everything.
@node Locals
@subsection Local Variables
Many keyboards have a ``numeric keypad'' on the right hand side.
The numeric keys in the keypad double up as cursor motion keys,
toggled by a key labelled @samp{Num Lock}. By default, Emacs
-translates these keys to the corresponding keys in the main keyboard
-(@pxref{Keyboard Translations}). For example, when @samp{Num Lock} is
-on, the key labelled @samp{8} on the numeric keypad produces
-@code{kp-8}, which is translated to @kbd{8}; when @samp{Num Lock} is
-off, the same key produces @code{kp-up}, which is translated to
-@key{UP}. If you rebind a key such as @kbd{8} or @key{UP}, it affects
-the equivalent keypad key too. However, if you rebind a @samp{kp-}
-key directly, that won't affect its non-keypad equivalent.
+translates these keys to the corresponding keys in the main keyboard.
+For example, when @samp{Num Lock} is on, the key labelled @samp{8} on
+the numeric keypad produces @code{kp-8}, which is translated to
+@kbd{8}; when @samp{Num Lock} is off, the same key produces
+@code{kp-up}, which is translated to @key{UP}. If you rebind a key
+such as @kbd{8} or @key{UP}, it affects the equivalent keypad key too.
+However, if you rebind a @samp{kp-} key directly, that won't affect
+its non-keypad equivalent.
Emacs provides a convenient method for binding the numeric keypad
keys, using the variables @code{keypad-setup},
@kbd{M-x}. Disabling a command has no effect on calling it as a
function from Lisp programs.
-@node Keyboard Translations
-@section Keyboard Translations
-
- Some keyboards do not make it convenient to send all the special
-characters that Emacs uses. The most common problem case is the
-@key{DEL} character. Some keyboards provide no convenient way to type
-this very important character---usually because they were designed to
-expect the character @kbd{C-h} to be used for deletion. On these
-keyboards, if you press the key normally used for deletion, Emacs handles
-the @kbd{C-h} as a prefix character and offers you a list of help
-options, which is not what you want.
-
-@cindex keyboard translations
-@findex keyboard-translate
- You can work around this problem within Emacs by setting up keyboard
-translations to turn @kbd{C-h} into @key{DEL} and @key{DEL} into
-@kbd{C-h}, as follows:
-
-@example
-;; @r{Translate @kbd{C-h} to @key{DEL}.}
-(keyboard-translate ?\C-h ?\C-?)
-
-;; @r{Translate @key{DEL} to @kbd{C-h}.}
-(keyboard-translate ?\C-? ?\C-h)
-@end example
-
- Keyboard translations are not the same as key bindings in keymaps
-(@pxref{Keymaps}). Emacs contains numerous keymaps that apply in
-different situations, but there is only one set of keyboard
-translations, and it applies to every character that Emacs reads from
-the terminal. Keyboard translations take place at the lowest level of
-input processing; the keys that are looked up in keymaps contain the
-characters that result from keyboard translation.
-
- On a window system, the keyboard key named @key{DELETE} is a function
-key and is distinct from the @acronym{ASCII} character named @key{DEL}.
-@xref{Named ASCII Chars}. Keyboard translations affect only @acronym{ASCII}
-character input, not function keys; thus, the above example used on a
-window system does not affect the @key{DELETE} key. However, the
-translation above isn't necessary on window systems, because Emacs can
-also distinguish between the @key{BACKSPACE} key and @kbd{C-h}; and it
-normally treats @key{BACKSPACE} as @key{DEL}.
-
- For full information about how to use keyboard translations, see
-@ref{Translating Input,,,elisp, The Emacs Lisp Reference Manual}.
-
@node Syntax
@section The Syntax Table
@cindex syntax table
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