bug#32649: 27.0.50; up-list stops inside comment

["Andreas Röhler" <andreas.roehler@easy-emacs.de>]

On 08.09.2018 19:54, Andreas Schwab wrote:
> On Sep 08 2018, Andreas Röhler <andreas.roehler@easy-emacs.de> wrote:
> 
>> On 07.09.2018 10:53, Andreas Schwab wrote:
>>> On Sep 07 2018, Andreas Röhler <andreas.roehler@easy-emacs.de> wrote:
>>>
>>>> On 07.09.2018 06:46, Leo Liu wrote:
>>>>> On 2018-09-06 21:04 +0200, Andreas Röhler wrote:
>>>>>> In scratch-buffer, cursor at "d" towards end of line 1
>>>>>>
>>>>>> (foo\n(a ;(b c d)
>>>>>> e) bar)
>>>>>>
>>>>>> M-- M-x up-list --called with negative argument-- stops at opening
>>>>>> paren inside comment.
>>>>>
>>>>> I am not following. What is the issue here?
>>>>
>>>> A list can't start resp. end inside a commented section.
>>>
>>> Sure it can.  Just because it's behind a comment char doesn't mean it's
>>> not a list.
>>>
>>> Andreas.
>>
>>  From Elisp Info
>>
>> 2.2 Comments
>> ============
>>
>> A "comment" is text that is written in a program only for the sake of
>> humans that read the program, and that has no effect on the meaning of
>> the program.  [...] The Lisp reader discards comments; they do not
>> become part of the Lisp objects which represent the program within the
>> Lisp system.
> 
> The concept of a list is independent of any programming language, and
> has nothing to do with the Lisp reader. 

Hmm, didn't expect that and don't believe it. We speak about lists in 
emacs-lisp here, it is defined what a list is. They affect there meaning 
of a program and therefor can't exist inside a comment.




  Moreover, you can run
> eval-last-sexp also inside a comment.
> 

Thanks, just another bug. As the info above tells contents of a comment 
having no effect WRT meaning of a program, result of evaluation in this 
case comes from the deepness of nothing? ;)