:break form
If form evaluates to non- nil
, the debugger is entered directly from trace
. If it returns nil
, tracing continues as normal. This option lets you force entry to the debugger by supplying a form as simple as t
.
Upon entry to the traced function, the standard trace information is printed, any supplied :before
forms are executed, and then form is evaluated.
:break-on-exit form
Like :break
, this option allows you to enter the debugger from trace
. It differs in that the debugger is entered after the function call is complete.
Upon exit from the traced function, the standard trace information is printed, and then form is evaluated. Finally, any supplied :after
forms are executed.
:backtrace backtrace
Generates a backtrace on each call to the traced function. backtrace can be any of the following values:
Like the :bq
debugger command.
Like the :b
debugger command.
Like the :b :verbose
debugger command.
Like the :bug-form
debugger command.