Variable: COMMON-LISP:*DEBUGGER-HOOK*ΒΆ

package type clhs

This is either NIL or a function of two arguments, a condition and the value of DEBUGGER-HOOK. This function can either handle the condition or return which causes the standard debugger to execute. The system passes the value of this variable to the function because it binds DEBUGGER-HOOK to NIL around the invocation.