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Let's say I write the following code:

(let* ((f (lambda () (debug))))
  (funcall f))

This will produce the following backtrace:

Debugger entered: nil
  (closure (bootstrap-version t) nil (debug))()
  funcall((closure (bootstrap-version t) nil (debug)))

Is it possible to name the closure somehow in order to more easily read the backtrace? (In my use case, I can't just extract the function into a defun, because the function inherits lexical variables from an outer scope.) The closest I've found so far is to use a cl-block, but it still clutters the backtrace quite a bit.

(let* ((f (lambda () (cl-block foobar (debug)))))
  (funcall f))

gives

Debugger entered: nil
  (catch '--cl-block-foobar-- (debug))
  (cl--block-wrapper (catch '--cl-block-foobar-- (debug)))
  (cl-block foobar (debug))
  (closure (bootstrap-version t) nil (cl-block foobar (debug)))()
  funcall((closure (bootstrap-version t) nil (cl-block foobar (debug))))
  (let* ((f (lambda nil (cl-block foobar (debug))))) (funcall f))

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