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From: handa <handa@gnu.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: stephen.berman@gmx.net, stefan@marxist.se, juri@linkov.net,
	styang@fastmail.com, monnier@iro.umontreal.ca,
	45379@debbugs.gnu.org
Subject: bug#45379: 28.0.50; Degraded Performance of describe-buffer-bindings
Date: Fri, 02 Apr 2021 00:06:40 +0900	[thread overview]
Message-ID: <87v996rqm7.fsf@gnu.org> (raw)
In-Reply-To: <838s65ktvk.fsf@gnu.org> (message from Eli Zaretskii on Tue, 30 Mar 2021 10:01:19 +0300)

In article <838s65ktvk.fsf@gnu.org>, Eli Zaretskii <eliz@gnu.org> writes:

> > > Is the patch for the above improvement the one included in the file
> > > 0001-Fix-describe-buffer-bindings-performance-regression.patch?
> > 
> > Yes, it is.

It seems that the main intention of that patch is to avoid unnecessary
call of char_table_ref_and_range introduced by the commit below:

> >     Don't show key ranges if shadowed by different commands
> > 
> >     * src/keymap.c (describe_vector): Make sure found consecutive keys
> >     are either not shadowed or, if they are, that they are shadowed by
> >     the same command.  (Bug#9293)

In describe_vector, if VECTOR is a char-table, char_table_ref_and_range
is already called at the fairly beginning of the main loop.  So, we do
not have to call it again, and thus, I think the patch is doing the
correct thing.

But, I don't know whether the following part in the patch is correct or
not.

+	  /* Ignore `self-insert-command' for performance.  */
+	  && !EQ (definition, Qself_insert_command))

---
K. Handa
handa@gnu.org





  reply	other threads:[~2021-04-01 15:06 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-23  6:01 bug#45379: 28.0.50; Degraded Performance of describe-buffer-bindings styang
2021-01-08 16:47 ` Sheng Yang
2021-01-08 17:00   ` Stefan Kangas
2021-01-08 17:08   ` Stefan Kangas
2021-02-04 15:43     ` Sheng Yang
2021-03-06  4:44     ` Stefan Kangas
2021-03-06  8:15       ` Eli Zaretskii
2021-03-07  1:42         ` handa
2021-03-07  6:15           ` Eli Zaretskii
2021-03-30  7:01             ` Eli Zaretskii
2021-04-01 15:06               ` handa [this message]
2021-04-14  3:06                 ` Sheng Yang
2021-03-07  8:12         ` Stefan Kangas
2021-03-07  8:38           ` Eli Zaretskii
2021-05-04 23:31       ` Stefan Kangas
2021-05-06 10:11         ` Eli Zaretskii
2021-05-13 10:10         ` Eli Zaretskii
2021-06-26 21:51           ` Sheng Yang
2021-06-27  5:56             ` Eli Zaretskii
2021-09-07 18:53           ` Eli Zaretskii
2021-09-18 10:37             ` Eli Zaretskii
2021-09-18 12:34               ` Stefan Kangas
2021-09-18 13:24                 ` Eli Zaretskii
2021-09-18 14:39                   ` Stefan Kangas

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