@c -*-texinfo-*-
@c This is part of the GNU Emacs Lisp Reference Manual.
-@c Copyright (C) 1990-1995, 1998-1999, 2001-2014 Free Software
+@c Copyright (C) 1990-1995, 1998-1999, 2001-2015 Free Software
@c Foundation, Inc.
@c See the file elisp.texi for copying conditions.
@node Modes
@item
The new mode has its own mode hook, @code{@var{variant}-hook}. It
runs this hook, after running the hooks of its ancestor modes, with
-@code{run-mode-hooks}, as the last thing it does. @xref{Mode Hooks}.
+@code{run-mode-hooks}, as the last thing it does. @xref{Mode Hooks}.
@end itemize
In addition, you can specify how to override other aspects of
way, specifying @code{tabulated-list-mode} as the second argument
(@pxref{Derived Modes}). The body of the @code{define-derived-mode}
form should specify the format of the tabulated data, by assigning
-values to the variables documented below; then, it should call the
-function @code{tabulated-list-init-header} to initialize the header
-line.
+values to the variables documented below; optionally, it can then call
+the function @code{tabulated-list-init-header}, which will populate a
+header with the names of the columns.
The derived mode should also define a @dfn{listing command}. This,
not the mode command, is what the user calls (e.g., @kbd{M-x
@code{tabulated-list-format}).
@end defun
-@defun tabulated-list-print &optional remember-pos
+@defun tabulated-list-print &optional remember-pos update
This function populates the current buffer with entries. It should be
called by the listing command. It erases the buffer, sorts the entries
specified by @code{tabulated-list-entries} according to
If the optional argument @var{remember-pos} is non-@code{nil}, this
function looks for the @var{id} element on the current line, if any, and
tries to move to that entry after all the entries are (re)inserted.
+
+If the optional argument @var{update} is non-@code{nil}, this function
+will only erase or add entries that have changed since the last print.
+This is several times faster if most entries haven't changed since the
+last time this function was called. The only difference in outcome is
+that tags placed via @code{tabulated-list-put-tag} will not be removed
+from entries that haven't changed (normally all tags are removed).
@end defun
@node Generic Modes
(let ((st (make-syntax-table)))
(modify-syntax-entry ?\" ". " st)
(modify-syntax-entry ?\\ ". " st)
- ;; Add `p' so M-c on `hello' leads to `Hello', not `hello'.
+ ;; Add 'p' so M-c on 'hello' leads to 'Hello', not 'hello'.
(modify-syntax-entry ?' "w p" st)
st)
"Syntax table used while in `text-mode'.")
disables it. From Lisp, an argument of @code{toggle} toggles the mode,
whereas an omitted or @code{nil} argument enables the mode.
This makes it easy to enable the minor mode in a major mode hook, for example.
-If @var{doc} is nil, the macro supplies a default documentation string
+If @var{doc} is @code{nil}, the macro supplies a default documentation string
explaining the above.
By default, it also defines a variable named @var{mode}, which is set to
It is normally @code{nil}, so that ordinary buffers have no header line.
@end defvar
-The function @code{window-header-line-height} returns the height of
-the header line:
-
@defun window-header-line-height &optional window
-Return the height of @var{window}'s header line, in pixels.
-@var{window} must be a live window. If @var{window} is @code{nil} or
-omitted, it will be the selected window.
+This function returns the height in pixels of @var{window}'s header
+line. @var{window} must be a live window, and defaults to the
+selected window.
@end defun
A window that is just one line tall never displays a header line. A
transpose the two arguments of a @code{+} operator, taking into account
the precedence rules of the language.
-Calling `smie-setup' is also sufficient to make TAB indentation work in
+Calling @code{smie-setup} is also sufficient to make TAB indentation work in
the expected way, extends @code{blink-matching-paren} to apply to
elements like @code{begin...end}, and provides some commands that you
can bind in the major mode keymap.
Notice how those lexers return the empty string when in front of
parentheses. This is because SMIE automatically takes care of the
parentheses defined in the syntax table. More specifically if the lexer
-returns nil or an empty string, SMIE tries to handle the corresponding
+returns @code{nil} or an empty string, SMIE tries to handle the corresponding
text as a sexp according to syntax tables.
@node SMIE Tricks
block).
@var{method} should be the method name that was passed to
-`smie-rules-function'.
+@code{smie-rules-function}.
@end defun
@node SMIE Indentation Example