*debugger-hook*

• Global variable, normally its value is NIL

• You can set it to point to a function of two arguments

  • First arg receives an error condition
  • Second arg is value of *debugger-hook*

• Immediately prior to landing in the debugger, this function is called

  • You might use it to pop up a menu of restarts to the user (a “menu debugger”) rather than letting the user land in the full-blown debugger

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