6 Action Lists

6.2 Exception handling variables

The following global variables are used to control the handling of exceptions:

*handle-existing-action-list*

Variable

: A list containing either:warn or:silent, determining whether to notify the user, and either:skip or:redefine to determine what to do about an action-list operation when the action-list already exists. The default value is'(:warn :skip). It is used by thedefine-action-list macro.

*handle-existing-action-in-action-list*

Variable

: A list containing one of:warn, or:silent, determining whether to notify the user, and one of:skip, or:redefine, to determine what to do about an action definition when the action already exists in the given action-list. The default value is'(:warn :skip). It is used bydefine-action.

*handle-missing-action-list*

Variable

: A keyword; one of:warn,:error, or:ignore, denoting how to handle an operation on a missing action-list. The default value is:error. It is used byundefine-action-list,print-actions,execute-actions,define-action andundefine-action.

*handle-missing-action-in-action-list*

Variable

: A keyword; one of:warn,:error or:ignore, denoting how to handle an operation on a missing action. Its default value is:warn. It is used byundefine-action.