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bug#54537: Re: bug#54537: 29.0.50; Last sexp notion is different for eva
From: |
Drew Adams |
Subject: |
bug#54537: Re: bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp |
Date: |
Wed, 23 Mar 2022 21:06:01 +0000 |
> > Whether it's better ("more convenient") or not,
> > I don't know. But it's a backward-incompatible
> > change. That might be one thing to consider -
> > what users expect will break/change.
>
> Sure, but the current (inconsistent) behaviour is surprising.
Is it? The `pp-*' commands have different uses.
FWIW, I even add separate variables for PP, for
controlling print level and length. Force-using
the same values for the `pp-*' commands doesn't
make sense to me.
Similarly, I'm not shocked by the difference this
bug report wants to get rid of. I don't necessarily
object to the change. I'm just not convinced that
such consistency is important.
What matters most wrt consistency is _local_
consistency - being consistent within a given
context/scope/set of rules. PP is a different
world (context).
(That's not an argument why PP's last-sexp should
be different. It's an argument that just a "more
convenient" argument that it should be the same
isn't a strong one.)
> I would be personally okay with such a
> backwards-incompatible change, but I am
> biased since I filed the bug report.
It's a reasonable proposal to examine. And it
might be the right thing to do.
My contribution is just to point out that PP eval
is not non-PP eval, and "more convenient" isn't a
strong argument when the increment of "more" isn't
large. And when introducing backward-incompatible
behavior maybe other, stronger arguments would help.
Maybe bring this up on emacs-devel, to see if more
and better arguments for and against the change
are available? (Not a requirement, of course.)
- bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Visuwesh, 2022/03/23
- bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Lars Ingebrigtsen, 2022/03/23
- bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Drew Adams, 2022/03/23
- bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Visuwesh, 2022/03/23
- bug#54537: Re: bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp,
Drew Adams <=
- bug#54537: Re: bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Michael Heerdegen, 2022/03/23
- bug#54537: Re: bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Drew Adams, 2022/03/23
- bug#54537: Re: bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Michael Heerdegen, 2022/03/23
- bug#54537: Re: bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Drew Adams, 2022/03/23
- bug#54537: Re: bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Visuwesh, 2022/03/23
bug#54537: 29.0.50; Last sexp notion is different for eval-last-sexp and pp-eval-last-sexp, Lars Ingebrigtsen, 2022/03/25