strict.lsp

In the commandline of AutoCAD or BricsCAD:

Put strict.lsp on CAD's search-path and type as below.

(load "strict")
(strict "SCRIPT.LSP")

and it shows

• unused variables whose declarations exist in (defun)
• used vairables without declaration in (defun)

about SCRIPT.LSP.

• (let) is not supported because autolisp does not have it.

For example

example-warning.lsp

(defun hoge (/ foo)
  (setq bar 1)
)

do on the commandline of CAD:

: (strict "example-warning")

HOGE: BAR has no declarations.
HOGE: FOO is unused.