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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Dmitry Antipov <dmantipov@yandex.ru>
Cc: Eli Zaretskii <eliz@gnu.org>,
	Emacs development discussions <emacs-devel@gnu.org>
Subject: Re: Long lines and bidi [Was: Re: bug#13623: ...]
Date: Fri, 08 Feb 2013 10:33:08 -0500	[thread overview]
Message-ID: <jwvzjze967w.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <5114FEBB.8020201@yandex.ru> (Dmitry Antipov's message of "Fri, 08 Feb 2013 17:33:47 +0400")

> So the first question is: is it feasible/possible/desirable to detect
> that the buffer has no R2L text at all and automatically force
> bidi-paragraph-direction to left-to-right and bidi-display-reordering
> to nil?

Would this speed things up by a constant factor, or would it actually
remove an O(N) factor?

I think a fix will need more than a constant factor speed up.

Did you check both the truncate-lines=nil and the truncate-lines=t cases?
I think that for the truncate-lines=t case, we won't be able to avoid
the O(linelength) slowdown (but we should try and skip the non-displayed
part of lines faster, especially when there's no
`display/after/before-string' property).


        Stefan



  parent reply	other threads:[~2013-02-08 15:33 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-03 22:05 bug#13623: 24.3.50; Redisplay issue with transient-mark-mode Lawrence Mitchell
2013-02-04 15:49 ` Eli Zaretskii
2013-02-04 17:20   ` Lawrence Mitchell
2013-02-04 18:10     ` Eli Zaretskii
2013-02-05  4:54   ` Dmitry Antipov
2013-02-05 12:07     ` Dmitry Antipov
2013-02-05 17:46       ` Eli Zaretskii
2013-02-05 17:45     ` Eli Zaretskii
2013-02-06  7:16       ` Dmitry Antipov
2013-02-06 14:31         ` Stefan Monnier
2013-02-06 15:14           ` Dmitry Antipov
2013-02-06 18:04             ` Eli Zaretskii
2013-02-06 18:23             ` Eli Zaretskii
2013-02-06 20:30               ` Stefan Monnier
2013-02-07  3:41                 ` Eli Zaretskii
2013-02-08 13:33               ` Long lines and bidi [Was: Re: bug#13623: ...] Dmitry Antipov
2013-02-08 14:07                 ` Eli Zaretskii
2013-02-08 14:46                   ` Long lines and bidi Eli Zaretskii
2013-02-08 16:38                     ` Dmitry Antipov
2013-02-08 16:52                       ` Eli Zaretskii
2013-02-09  3:34                         ` Paul Eggert
2013-02-09  8:46                           ` Eli Zaretskii
2013-02-09  9:05                             ` Paul Eggert
2013-02-09  9:33                               ` Eli Zaretskii
2013-02-11  2:33                                 ` Paul Eggert
2013-02-09 10:01                               ` Eli Zaretskii
2013-02-10 16:57                                 ` Eli Zaretskii
2013-02-11  5:43                                   ` Dmitry Antipov
2013-02-11  7:54                                     ` Dmitry Antipov
2013-02-11 16:47                                       ` Eli Zaretskii
2013-02-11 23:55                                         ` Paul Eggert
2013-02-11 16:42                                     ` Eli Zaretskii
2013-02-11 17:53                                       ` Dmitry Antipov
2013-02-11 18:10                                         ` Eli Zaretskii
2013-02-11 18:21                                           ` Dmitry Antipov
2013-02-11 17:17                                   ` Eli Zaretskii
2013-02-11 17:55                                     ` Drew Adams
2013-02-11 18:13                                       ` Eli Zaretskii
2013-02-08 16:21                   ` Long lines and bidi [Was: Re: bug#13623: ...] Dmitry Antipov
2013-02-08 17:04                     ` Eli Zaretskii
2013-02-08 15:33                 ` Stefan Monnier [this message]
2013-02-08 16:05                   ` Eli Zaretskii

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