Variable: SB-DEBUG:*METHOD-FRAME-STYLE*

package type

Determines how frames corresponding to method functions are represented in backtraces. Possible values are :MINIMAL, :NORMAL, and :FULL.

:MINIMAL represents them as

(<gf-name> …args…)

if all arguments are available, and only a single method is applicable to the arguments – otherwise behaves as :NORMAL.

:NORMAL represents them as

((:method <gf-name> [] ()) …args…)

The frame is then followed by either [fast-method] or [slow-method], designating the kind of method function. (See below.)

:FULL represents them using the actual funcallable method function name:

((sb-pcl:fast-method <gf-name> [] ()) …args…)

or

((sb-pcl:slow-method <gf-name> [] ()) …args…)

In the this case arguments may include values internal to SBCL’s method dispatch machinery.

Value

:normal