GNU bug report logs - #40704
28.0.50; Improve and speed up (Gnus) registry saving

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Message #38 received at 40704 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: 40704 <at> debbugs.gnu.org, Eric Abrahamsen <eric <at> ericabrahamsen.net>
Subject: Re: bug#40704: 28.0.50; Improve and speed up (Gnus) registry saving
Date: Sun, 19 Jul 2020 17:22:08 +0200

Michael Heerdegen <michael_heerdegen <at> web.de> writes:

> Lars Ingebrigtsen <larsi <at> gnus.org> writes:
>
>> Presumably there's already code to print a hash table somewhere in
>> Emacs?  That would be the other printer, since your patch adds a new
>> one.
>
> That's what the code currently already does.  But: See what I wrote
> about the purpose of the patch: our saving code needs to modify how
> elements in the hash table are printed.  The Lisp printer doesn't allow
> that per se.  My suggested patch substitutes a very inefficient hack
> with a more efficient hack.  The current code uses printing + re-reading
> AFAIR - and that on nested hash tables.
>
> I thought long about removing the need for this hack altogehter, but
> this is very complicated, if not impossible (yes, you would need to
> change the printer).

I didn't object to this new, more efficient printer -- I just pointed
out that you should add comments to both of the hash table printers that
there are (now) two of them.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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