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

[Andreas Röhler]

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? ;)