Re: general lazy list facility for Emacs Lisp?

[Stefan Monnier]

> (let ((x 1))
>   (defun lex-test (y)
>     (+ x y)))

Note that the byte-compiler won't like the above.  You'll want either

  (let ((x 1))
    (defalias 'lex-test (lambda (y) (+ x y))))

or

  (defalias 'lex-test (let ((x 1)) (lambda (y) (+ x y))))

or something like that.
  
>> and will report issues if I find one in my daily use.
> Found one!  C-h k lexical-binding RET errors.

Hmm... works here.

> I've reported it, but the confirmation mail has not yet arrived.

I'll wait for the precise report, then.

>> I guess, that there are many packages that won't work with
>> lexical-binding set to t, right?

Indeed.  Tho check the Elisp manual for hints about how to convert
(it's usually pretty easy).

> Seems to be a false assumption.  At least org and Gnus are running fine.

I think you're misunderstanding your test, because I doubt either of
Gnus or Org would work with lexical-binding without any
additional modification.
lexical-binding is a variable that applies to a file/buffer.  E.g. it
affects the compiler but not the compiled code.


        Stefan