The 'XREF' utility provided by CMUCL and SBCL (sb-introspect) doesn't
work very well. The one from Lispworks is better.
The following list comes from this command and is manually filtered:
)lisp (do-symbols (s "BOOT") (and (boundp s) (not (hcl:who-references
s)) (not (hcl:who-binds s)) (not (hcl:who-sets s)) (not (constantp s))
(print s)))
LABLASOC
$NONBLANK
|$constructorDataTable|
|$charTab|
|$ancestor_hash| -- should be |$ancestors_hash|?
|$countAssoc|
|$fortIndent| -- replaced by fort_indent, ')set fort fortindent' no effect
|$printFortranDecs| -- ")set fort typedecs" no effects?
|$historyDisplayWidth| -- ")set hyper mathwidth" no effects?
|$do_not_compress_databases|
|$newline| -- there's also |$Newline|
|$giveExposureWarning| -- ')set mes expose on' no effect?
|$hashPercent| -- using locally defined hashPercent instead
|$exposeDocHeading|
|$cacheMessages|
$PRETTYPRINT -- there's also |$PrettyPrint|, ")set sys prettyprint" no
effect
|$gcTimeTotal|
- Qian
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