This variable is used by the debugger when it displays the stack frames. Binding frames are formed when special variables are bound, but are normally not shown by the debugger. However if
dbg:*print-binding-frames*
is set to
t
then the binding frames are shown.
USER 10 > (defun print-to-length (object length)
(let ((*print-length* length))
(prinnt object)))
PRINT-TO-LENGTH
USER 11 > (setq dbg:*print-binding-frames* t)
T
USER 12 > (print-to-length '(1 2 3 4 5) 2)
Error: Undefined function: PRINNT , with args
((1 2 ...))
1 (continue) Call PRINNT again
2 (abort) return to top loop level 0.
Type
:c
followed by a number to proceed
USER 13 : 1 > :n print-to-length
USER 14 : 1 > :b :verbose 2
Interpreted call to (DEFUN PRINT-TO-LENGTH):
*PRINT-LENGTH* : %INTERNAL-SPECIAL-MARKER%
LENGTH : 2 OBJECT : (1 2 3 4 5)
Binding frame: %BENV%,NIL