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9.3 Customized Variable Status

To get information about a customizable variable, you can use the following functions.

Function: variable-customized-p symbol

Returns true if symbol has been customized by the user, false otherwise.

Function: variable-declared-p symbol
Function: variable-default-value symbol

The variable-declared-p function returns true if the variable named symbol has a default value declared for it, false otherwise. The variable-default-value function returns the default value of that variable, or nil if no such default value exists.

Function: variable-type symbol

Returns the customizable type of the variable named symbol.