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bug#24171: 25.1; Bytecode returns nil instead of expected closure


From: Andreas Schwab
Subject: bug#24171: 25.1; Bytecode returns nil instead of expected closure
Date: Sun, 07 Aug 2016 13:24:51 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux)

On So, Aug 07 2016, Clément Pit--Claudel <clement.pit@gmail.com> wrote:

> On 2016-08-07 05:01, Andreas Schwab wrote:
>> Michael Heerdegen <michael_heerdegen@web.de> writes:
>> 
>>> eval this defun:
>>>
>>> (defun test ()
>>>   (let ((my-cool-fun 'dummy))
>>>     (let ((my-cool-fun
>>>            (let ((calculate (lambda () 1)))
>>>              (lambda () (setq my-cool-fun calculate))))
>>>           (return-my-cool-fun (lambda () my-cool-fun)))
>>>       (funcall my-cool-fun)
>>>       (funcall return-my-cool-fun))))
>>>
>>> (test) evals to a closure as expected.
>> 
>> ELISP> (test)
>> *** Eval error ***  Symbol’s value as variable is void: calculate
>
> I can reproduce this. Andreas, are you missing ;; -*- lexical-binding: t; -*- 
> ?

I was following the instructions.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."





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