all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
From: Wolfgang Jenkner <wjenkner@inode.at>
To: Stefan Monnier <monnier@IRO.UMontreal.CA>
Cc: 21077@debbugs.gnu.org, Ista Zahn <istazahn@gmail.com>
Subject: bug#21077: 24.5; Slow printing in inferior python buffer with python-shell-enable-font-lock
Date: Sat, 01 Aug 2015 14:42:14 +0200	[thread overview]
Message-ID: <85oair5gex.fsf@iznogoud.viz> (raw)
In-Reply-To: <CA+vqiLGTwe4b+O-1iuiyAwM4W59--V5qjEcmPTkTfsnb4xTvSQ@mail.gmail.com>

On Thu, Jul 30 2015, Stefan Monnier wrote:

> In the case of comint modes, rather than disable font-lock we should
> refrain from font-locking the text after the last \n (since that's the
> line that keeps getting expanded, so we end up re-font-locking it O(N)
> times for a line of length N, for a total amount of work of O(N^2)).
> IIRC I have a similar hack in grep.el or compile.el.

But comint-output-filter does

(font-lock-prepend-text-property prompt-start (point)
					       'font-lock-face
					       'comint-highlight-prompt)

So keyword fontification seems to be inhibited anyway.  Is this done in
a particularly inefficient way?

Wolfgang (who ought to go read the source)





  parent reply	other threads:[~2015-08-01 12:42 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-16 16:42 bug#21077: 24.5; Slow printing in inferior python buffer with python-shell-enable-font-lock Ista Zahn
2015-07-16 18:34 ` Eli Zaretskii
2015-07-16 19:09   ` Ista Zahn
2015-07-16 19:34     ` Eli Zaretskii
2015-07-16 19:50       ` Ista Zahn
2015-07-17  6:53         ` Eli Zaretskii
2015-07-17  8:33           ` Stefan Monnier
2015-07-17  8:56             ` Rasmus
2015-07-29 20:50             ` Ista Zahn
2015-07-30 23:19               ` Stefan Monnier
2015-07-31  0:27                 ` Ista Zahn
2015-07-31 22:07                   ` Stefan Monnier
2015-08-01  1:46                     ` Ista Zahn
2015-08-01 12:36                       ` Wolfgang Jenkner
2015-08-01 16:26                         ` Ista Zahn
2015-08-03 23:57                           ` Wolfgang Jenkner
2016-07-14  1:31                           ` npostavs
2015-08-01 12:42                 ` Wolfgang Jenkner [this message]
2015-08-03 21:41                   ` Stefan Monnier

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=85oair5gex.fsf@iznogoud.viz \
    --to=wjenkner@inode.at \
    --cc=21077@debbugs.gnu.org \
    --cc=istazahn@gmail.com \
    --cc=monnier@IRO.UMontreal.CA \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.