Destructuring Lambda Lists

A destructuring lambda list is used by destructuring-bind.

Destructuring lambda lists are closely related to macro lambda lists; see section Macro Lambda Lists. A destructuring lambda list can contain all of the lambda list keywords listed for macro lambda lists except for &environment, and supports destructuring in the same way. Inner lambda lists nested within a macro lambda list have the syntax of destructuring lambda lists.

A destructuring lambda list has the following syntax:

{ reqvars ::={var | !lambda-list}{*}

optvars ::=[{&optional {var | ({{var | !lambda-list}} [init-form [supplied-p-parameter]])}{*}]}

restvar ::=[{{&rest | {&body}} {var | !lambda-list}]}

keyvars ::=[{&key {var | ({var | (keyword-name {{var | !lambda-list}})} [init-form [supplied-p-parameter]])}{*}} [&allow-other-keys]]

{ auxvars ::=[{&aux {var | ({var} [init-form])}{*}]} } envvar ::=[{&environment var]}

wholevar ::=[{&whole var]}

lambda-list ::=(!wholevar !reqvars !optvars !restvar !keyvars !auxvars) | (!wholevar !reqvars !optvars . var)

}

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