bug#52063: 28.0.60; Confusing presentation of lambda

[Lars Ingebrigtsen]

Filipp Gunbin <fgunbin@fastmail.fm> writes:

> Or maybe we could just _print_ the closure objects in such a special
> way that it's more pleasant to read, especially when there's actually
> empty lexical environment.

(pp-emacs-lisp-code (lambda () (setq foo bar) (setq foo bar)))
=>
(closure
 (t)
 nil
 (setq foo bar)
 (setq foo bar))

Slightly less confusing, but perhaps it should be

(closure (t) nil
  (setq foo bar)
  (setq foo bar))

Depends on the length of the lexical list, though:

(pp-emacs-lisp-code
 (let ((bar 1))
   (lambda (f) (setq foo bar) (setq foo bar))))
=>
(closure ((bar . 1) t) (f)
  (setq foo bar)
  (setq foo bar))

can be unwieldy if the list is long.

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