lispref/customize.texi checked.

[Matt Hodges <MPHodges@member.fsf.org>]

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Here are some fixes and suggested changes for lispref/customize.texi:


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*** /scratch/matt/ediff2486435C	Mon Nov 22 14:46:40 2004
--- /home/matt/software/cvs/emacs/lispref/customize.texi	Mon Nov 22 14:21:54 2004
***************
*** 304,310 ****
  
  @example
  (defcustom show-paren-mode nil
!   "Toggle Show Paren mode..."
    :set (lambda (symbol value)
           (show-paren-mode (or value 0)))
    :initialize 'custom-initialize-default
--- 304,310 ----
  
  @example
  (defcustom show-paren-mode nil
!   "Non-nil if Show-Paren mode is enabled..."
    :set (lambda (symbol value)
           (show-paren-mode (or value 0)))
    :initialize 'custom-initialize-default
***************
*** 538,544 ****
                           ("ken"    52 t))
    "Alist of basic info about people.
  Each element has the form (NAME AGE MALE-FLAG)."
!   :type '(alist :value-type (group age boolean)))
  
  (defcustom pets '(("brian")
                    ("dorith" "dog" "guppy")
--- 538,544 ----
                           ("ken"    52 t))
    "Alist of basic info about people.
  Each element has the form (NAME AGE MALE-FLAG)."
!   :type '(alist :value-type (group integer boolean)))
  
  (defcustom pets '(("brian")
                    ("dorith" "dog" "guppy")
***************
*** 665,671 ****
  @end example
  
  @noindent
! so that the menu offers @samp{Number of spaces} and @samp{Literal Text}.
  
  In any alternative for which @code{nil} is not a valid value, other than
  a @code{const}, you should specify a valid default for that alternative
--- 665,671 ----
  @end example
  
  @noindent
! so that the menu offers @samp{Number of spaces} and @samp{Literal text}.
  
  In any alternative for which @code{nil} is not a valid value, other than
  a @code{const}, you should specify a valid default for that alternative
***************
*** 824,831 ****
  Use @var{criteria} to match possible values.  This is used only in
  @code{restricted-sexp}.
  
! @item :args @var{argumentlist}
! Use the elements of @var{argumentlist} as the arguments of the type
  construct.  For instance, @code{(const :args (foo))} is equivalent to
  @code{(const foo)}.  You rarely need to write @code{:args} explicitly,
  because normally the arguments are recognized automatically as
--- 824,831 ----
  Use @var{criteria} to match possible values.  This is used only in
  @code{restricted-sexp}.
  
! @item :args @var{argument-list}
! Use the elements of @var{argument-list} as the arguments of the type
  construct.  For instance, @code{(const :args (foo))} is equivalent to
  @code{(const foo)}.  You rarely need to write @code{:args} explicitly,
  because normally the arguments are recognized automatically as
***************
*** 1071,1077 ****
  using the same type for many user options, rather than repeat the
  specification for each option, you can give the type specification a
  name once, and use that name each @code{defcustom}.  The other case is
! when a user option accept a recursive datastructure.  To make it
  possible for a datatype to refer to itself, it needs to have a name.
  
  Since custom types are implemented as widgets, the way to define a new
--- 1071,1077 ----
  using the same type for many user options, rather than repeat the
  specification for each option, you can give the type specification a
  name once, and use that name each @code{defcustom}.  The other case is
! when a user option accepts a recursive data structure.  To make it
  possible for a datatype to refer to itself, it needs to have a name.
  
  Since custom types are implemented as widgets, the way to define a new
***************
*** 1097,1136 ****
    :type 'binary-tree-of-string)
  @end example
  
! The function to define a new widget is name @code{define-widget}.  The
  first argument is the symbol we want to make a new widget type.  The
  second argument is a symbol representing an existing widget, the new
  widget is going to be defined in terms of difference from the existing
  widget.  For the purpose of defining new customization types, the
! @code{lazy} widget is perfect, because it accept a @code{:type} keyword
  argument with the same syntax as the keyword argument to
  @code{defcustom} with the same name.  The third argument is a
  documentation string for the new widget.  You will be able to see that
  string with the @kbd{M-x widget-browse @key{ret} binary-tree-of-string
  @key{ret}} command.
  
! After these mandatory arguments follows the keyword arguments.  The most
  important is @code{:type}, which describes the datatype we want to match
  with this widget.  Here a @code{binary-tree-of-string} is described as
  being either a string, or a cons-cell whose car and cdr are themselves
  both @code{binary-tree-of-string}.  Note the reference to the widget
  type we are currently in the process of defining.  The @code{:tag}
  attribute is a string to name the widget in the user interface, and the
! @code{:offset} argument are there to ensure that child nodes are
! indented four spaces relatively to the parent node, making the tree
  structure apparent in the customization buffer.
  
  The @code{defcustom} shows how the new widget can be used as an ordinary
  customization type.
  
! If you wonder about the name @code{lazy}, know that the other composite
! widgets convert their inferior widgets to internal form when the widget
! is instantiated in a buffer.  This conversion is recursive, so the
! inferior widgets will convert @emph{their} inferior widgets.  If the
! datastructure is itself recursive, this conversion will go on forever,
! or at least until Emacs run out of stack space.  The @code{lazy} widget
! stop this recursion, it will only convert its @code{:type} argument when
! needed.
  
  @ignore
     arch-tag: d1b8fad3-f48c-4ce4-a402-f73b5ef19bd2
--- 1097,1136 ----
    :type 'binary-tree-of-string)
  @end example
  
! The function to define a new widget is called @code{define-widget}.  The
  first argument is the symbol we want to make a new widget type.  The
  second argument is a symbol representing an existing widget, the new
  widget is going to be defined in terms of difference from the existing
  widget.  For the purpose of defining new customization types, the
! @code{lazy} widget is perfect, because it accepts a @code{:type} keyword
  argument with the same syntax as the keyword argument to
  @code{defcustom} with the same name.  The third argument is a
  documentation string for the new widget.  You will be able to see that
  string with the @kbd{M-x widget-browse @key{ret} binary-tree-of-string
  @key{ret}} command.
  
! After these mandatory arguments follow the keyword arguments.  The most
  important is @code{:type}, which describes the datatype we want to match
  with this widget.  Here a @code{binary-tree-of-string} is described as
  being either a string, or a cons-cell whose car and cdr are themselves
  both @code{binary-tree-of-string}.  Note the reference to the widget
  type we are currently in the process of defining.  The @code{:tag}
  attribute is a string to name the widget in the user interface, and the
! @code{:offset} argument is there to ensure that child nodes are
! indented four spaces relative to the parent node, making the tree
  structure apparent in the customization buffer.
  
  The @code{defcustom} shows how the new widget can be used as an ordinary
  customization type.
  
! If you are curious about the name @code{lazy}, you need to understand
! that the other composite widgets convert their inferior widgets to an
! internal form when the widget is instantiated in a buffer.  This
! conversion is recursive, so the inferior widgets will convert
! @emph{their} inferior widgets.  If the data structure is itself
! recursive, this conversion will go on forever, or at least until Emacs
! run out of stack space.  The @code{lazy} widget stop this recursion, it
! will only convert its @code{:type} argument when needed.
  
  @ignore
     arch-tag: d1b8fad3-f48c-4ce4-a402-f73b5ef19bd2

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