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我剛剛安裝Slimv以最大限度地利用lisp黑客，並且我無法從調試器中獲得任何有用的信息。Slimv回溯不顯示局部變量
如果我在REPL
(+ 1 a)
型我碰到下面的錯誤，這是很好的
EVAL: variable A has no value
[Condition of type SYSTEM::SIMPLE-UNBOUND-VARIABLE]
...和它附帶的瘋狂回溯
Backtrace:
0: [520] frame binding variables (~ = dynamically): | ~ SWANK::*SLDB-STEPPING-P* <--> NIL
No locals
1: [517] frame binding variables (~ = dynamically): | ~ SWANK::*SLDB-LEVEL* <--> 0
2: [514] frame binding variables (~ = dynamically): | ~ *PACKAGE* <--> #<PACKAGE COMMON-LISP-USER>
3: <1/507> #<COMPILED-FUNCTION SWANK::DEBUG-IN-EMACS>[506] frame binding variables (~ = dynamically): | ~ SWANK::*SLIME-INTERRUPTS-ENABLED* <--> T
4: <1/501> #<COMPILED-FUNCTION SWANK:INVOKE-SLIME-DEBUGGER>- #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2-1>
5: <1/499> #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2-1>- #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2-1>
6: [498] frame binding variables (~ = dynamically): | ~ *DEBUGGER-HOOK* <--> NIL
7: <1/494> #<COMPILED-FUNCTION #:|877 882 (DEFINTERFACE CALL-WITH-DEBUGGER-HOOK (HOOK FUN) ...)-84-3-1|>- #<COMPILED-FUNCTION #:|877 882 (DEFINTERFACE CALL-WITH-DEBUGGER-HOOK (HOOK FUN) ...)-84-3-1|>
8: <1/489> #<COMPILED-FUNCTION SWANK-BACKEND:CALL-WITH-DEBUGGER-HOOK>- #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2>
9: <1/486> #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2>- #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2>
10: [485] handler frame for conditions SWANK::INVOKE-DEFAULT-DEBUGGER
11: [479] compiled tagbody frame for #(NIL)
12: <1/473> #<COMPILED-FUNCTION SWANK:SWANK-DEBUGGER-HOOK>[471] frame binding variables (~ = dynamically): | ~ *DEBUGGER-HOOK* <--> #<COMPILED-FUNCTION SWANK:SWANK-DEBUGGER-HOOK>
13: <1/468> #<SYSTEM-FUNCTION INVOKE-DEBUGGER> 1[467] frame binding variables (~ = dynamically): | ~ SYSTEM::*PRIN-STREAM* <--> #<UNBOUND>
14: [464] frame binding variables (~ = dynamically): | ~ *PRINT-READABLY* <--> NIL
15: [461] frame binding variables (~ = dynamically): | ~ *PRINT-ESCAPE* <--> T
16: <1/458> #<SYSTEM-FUNCTION ERROR>[457] frame binding variables (~ = dynamically): | ~ SYSTEM::*ACTIVE-RESTARTS* <--> (#S(RESTART :NAME SWANK::RETRY :TEST #<COMPILED-FUNCTION SYSTEM::DEFAULT-RESTART..
17: [454] frame binding variables (~ = dynamically): | ~ SYSTEM::*CONDITION-RESTARTS* <--> NIL
18: [450] compiled block frame for SYSTEM::CHECK-VALUE
19: <1/445> #<COMPILED-FUNCTION SYSTEM::CHECK-VALUE>- NIL ~
所以，到底發生了什麼，我該如何解決？