Atomic Sexp Widgets.
The atoms are s-expressions that does not consist of other
s-expressions. A string is an atom, while a list is a composite type.
You can edit the value of an atom with the following widgets.
The syntax for all the atoms are
TYPE ::= (NAME [KEYWORD ARGUMENT]... [ VALUE ])
The value, if present, is used to initialize the :value
property and must be an expression of the same type as the widget.
I.e. the string widget can only be initialized with a string.
All the atom widgets take the same keyword arguments as the
editable-field widget.
— Widget:
string
Allows you to edit a string in an editable field.
— Widget:
regexp
Allows you to edit a regular expression in an editable field.
— Widget:
character
Allows you to enter a character in an editable field.
— Widget:
file
Allows you to edit a file name in an editable field. If you invoke
the tag button, you can edit the file name in the mini-buffer with
completion.
Keywords:
:must-match- If this is set to non-nil, only existing file names will be allowed in
the minibuffer.
— Widget:
directory
Allows you to edit a directory name in an editable field.
Similar to the file widget.
— Widget:
symbol
Allows you to edit a lisp symbol in an editable field.
— Widget:
function
Allows you to edit a lambda expression, or a function name with completion.
— Widget:
variable
Allows you to edit a variable name, with completion.
— Widget:
integer
Allows you to edit an integer in an editable field.
— Widget:
number
Allows you to edit a number in an editable field.
— Widget:
boolean
Allows you to edit a boolean. In lisp this means a variable which is
either nil meaning false, or non-nil meaning true.