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From: Alan Mackenzie <acm@muc.de>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: 43558@debbugs.gnu.org, "Mattias Engdegård" <mattiase@acm.org>
Subject: bug#43558: [PATCH]: Fix (forward-comment 1) when end delimiter is escaped.
Date: Sun, 22 Nov 2020 17:08:30 +0000	[thread overview]
Message-ID: <20201122170830.GD5912@ACM> (raw)
In-Reply-To: <jwv8sats9mc.fsf-monnier+emacs@gnu.org>

Hello, Stefan.

On Sun, Nov 22, 2020 at 10:20:32 -0500, Stefan Monnier wrote:
> > Because syntax-table text properties are already used for so many
> > different things in CC Mode (I think the count is five in C++ Mode).
> > Adding another one would mean having to scan for this rare construct at
> > every buffer change, and this would slow things down, possibly a lot.

> The fact that you already have 5 other such uses implies that the slow
> down from this one cannot possibly be larger than 20% (since the scan
> for it is very simple, I doubt any of the other 5 is simpler).

The fact remains that an implementation at the C level is objectively
better than one at the Lisp level.

> Most major modes have such things and we live just fine with them.
> This is a non-issue.

Really?  Are there any other programming language modes whose comments
syntax.c cannot handle without syntax-table text properties?

>         Stefan

-- 
Alan Mackenzie (Nuremberg, Germany).





  reply	other threads:[~2020-11-22 17:08 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-22  9:35 bug#43558: [PATCH]: Fix (forward-comment 1) when end delimiter is escaped Alan Mackenzie
2020-09-22 14:09 ` Stefan Monnier
2020-09-22 19:41   ` Alan Mackenzie
     [not found] ` <handler.43558.B.160076736116422.ack@debbugs.gnu.org>
2020-09-23  8:57   ` Alan Mackenzie
2020-09-23  9:01 ` Mattias Engdegård
2020-09-23 14:48   ` Alan Mackenzie
2020-09-23 18:44     ` Stefan Monnier
2020-09-23 19:44       ` Alan Mackenzie
2020-09-23 20:02         ` Stefan Monnier
2020-09-24 10:20       ` Alan Mackenzie
2020-09-24 16:56         ` Stefan Monnier
2020-09-24 18:50           ` Alan Mackenzie
2020-09-24 22:43             ` Stefan Monnier
2020-11-19 21:18           ` Alan Mackenzie
2020-11-19 22:47             ` Stefan Monnier
2020-11-22 13:12               ` Alan Mackenzie
2020-11-22 15:20                 ` Stefan Monnier
2020-11-22 17:08                   ` Alan Mackenzie [this message]
2020-11-22 17:46                     ` Dmitry Gutov
2020-11-22 18:19                       ` Alan Mackenzie
2020-11-22 20:39                         ` Dmitry Gutov
2020-11-22 21:13                           ` Alan Mackenzie
2020-11-22 21:34                             ` Dmitry Gutov
2020-11-22 22:01                               ` Alan Mackenzie
2020-11-22 23:00                                 ` Stefan Monnier
2021-05-13 10:38                                   ` Lars Ingebrigtsen
2021-05-13 14:51                                     ` Alan Mackenzie
2021-05-16 13:53                                       ` Lars Ingebrigtsen
2022-04-28 11:17                                       ` Lars Ingebrigtsen
2022-04-28 18:52                                         ` Alan Mackenzie
2020-11-22 23:10                     ` Stefan Monnier
2020-11-22 15:35                 ` Eli Zaretskii
2020-11-22 17:03                   ` Alan Mackenzie
2020-09-24 18:52     ` Michael Welsh Duggan
2020-09-24 19:57       ` Alan Mackenzie
2020-09-24 20:27         ` Michael Welsh Duggan

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