Re: false warnings when compiling with lexical-binding and cl-lib.

[Thierry Volpiatto]

Stefan Monnier <address@hidden> writes:

>> here a sample file containing a function using loop:
>
>> --8<---------------cut here---------------start------------->8---
>> ;;; test.el --- test loop -*- lexical-binding: t -*-
>
>> (require 'cl-lib)
>
>> (defun test-with (l)
>>   (cl-loop with lst
>>            for i in l
>>            unless (member i lst)
>>            collect i into lst
>>            finally return lst))
>> --8<---------------cut here---------------end--------------->8---
>
>> When compiling this file I have a warning about unused arg `lst'.
>> Is this wanted ?
>
> No, it's not wanted.  But noone so far as been able to come up with
> a patch to fix it (the code to fix is the cl-loop macro: look at the
> macro-expanded code to see the unused `lst').
Ok I see:

,----
| (let* ((lst nil) (--cl-var-- l) (i nil) (lst nil))
`----


-- 
Thierry
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