GNU bug report logs - #58687
29.0.50; Enabling pp-use-max-width dramatically slows down formatting of large sexps like org-persist--index

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From: Michael Eliachevitch <m.eliachevitch <at> posteo.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Ihor Radchenko <yantar92 <at> posteo.net>, 58687 <at> debbugs.gnu.org
Subject: bug#58687: Fwd: Re: bug#58687: 29.0.50; Enabling pp-use-max-width dramatically slows down formatting of large sexps like org-persist--index
Date: Thu, 12 Jan 2023 23:02:42 +0000

Sorry for the noise, but I need to resend (i.e. re-cc) this email to 58687 <at> debbugs.gnu.org. I had sent it already to that list earlier, but my e-mail provider had blocked it because I recently enabled the "TLS-sending guarantee" it had blocked 58687 <at> debbugs.gnu.org, therefore I disabled that setting again. Sorry for the noise.

To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Ihor Radchenko <yantar92 <at> posteo.net>, 58687 <at> debbugs.gnu.org

On 2023-01-12 at 23:22 +01, Michael Eliachevitch <m.eliachevitch <at> posteo.de> wrote:

> On 2023-01-12 at 18:39 +02, Eli Zaretskii <eliz <at> gnu.org> wrote:
>
>> Not "the current 'pp'", but the implementation for this optional
>> behavior.
>
> This is optional behavior, but I would prefer if the performance impact of
> enabling this optional behavior would be documented, e.g. in the variable
> docstring and NEWS.29. It's disabled by default and will only be used by those
> like me and Visuwesh who the documentation and news, so I'm fine with it being
> almost unusably slow if that's documented. Though better performance if possible
> would be nice of course.
>
> On 2023-01-12 at 22:03 +0530, Visuwesh <visuweshm <at> gmail.com> wrote:
>
>> Personally, I always thought it would be best if the user facing
>> commands like pp-eval-sexp and friends alone respected the user option.
>
> Sounds like a good idea. I definetly didn't expect that me personally setting
> this option for myself would affect how lisp objects are serialized to disk in
> external packages. Not sure if I would only enable it for interactive commands
> and the like, in the emacs-world we are all hackers and hard to say what is
> user-facing. People might write their own functions using pp on small s-exps,
> and wonder why this setting isn't doing anything. Not sure what's the best
> approach there
>
> Maybe pp isn't meant to be used for doing anything that's not meant primarily
> for human eyes, like serialization of lisp objects, maybe it's an error on
> package maintainers that use it that way, but at least that could also somehow
> be communicated more clearly to them.


--
Michael Eliachevitch
Public PGP Key: https://keyoxide.org/hkp/546908c782383ad0e7d894ec1b8f95c8125dce31

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