Re: Emacs bug #23794; sort-line behavior regressed from prior Emacs versions

[Robert Weiner <rsw@gnu.org>]

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On Sat, Jun 18, 2016 at 1:42 PM, Eli Zaretskii <eliz@gnu.org> wrote:
>
> I see that you consider this a regression.  But the change you refer
> to was in Emacs 22.1, released 9 years ago, so we've lived with this
> long enough to consider your proposal a new feature.


Well, we just fixed a 20-year-old documentation bug on markers from some
prior discussion, but I see why you might want to view it that way.  If the
behavior is a bug, no matter how long-standing, it should certainly be
given some standing above a regular new feature request.  Maybe RMS could
comment on whether sort-lines by design should sort only visible lines,
e.g. when some are hidden in outlines, or should sort all lines regardless
of visibility.

  I also think
> that your proposed change goes farther than just restoring that old
> behavior, because outline and its derivatives are not the only modes
> that use invisible text.
>

Can you provide one example where this patch changes the behavior of line
sorting in a negative way?  That would help to understand your thinking.  I
have provided the example of where it improves it.

This should be simple to resolve by just getting to the bottom of what the
function is designed to do in the case of invisible lines.

Bob

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