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From: Richard Stallman <rms@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: jit lock sit-for provokes redisplay provokes imenu
Date: Thu, 20 Jul 2006 14:16:59 -0400	[thread overview]
Message-ID: <E1G3d51-0000Cl-Bp@fencepost.gnu.org> (raw)
In-Reply-To: <81CCA6588E60BB42BE68BD029ED4826008838221@wimex2.wim.midas-kapiti.com> (simon.marshall@misys.com)

    After ~30s of idle time, I see imenu-update-menubar being called
    continuously by emacs.  At a guess, imenu is being triggered because
    jit-lock has kicked in.

That seems plausible.  Jit-lock does fontification by adding text
properties, and that modifies the buffer, so that the subsequent
redisplay will call imenu-update-menubar.

The obvious way to solve this is to add a feature that enables
imenu-update-menubar to determine that there have been no changes
except in text properties.  Then it could return without really doing
anything.

It could be a function buffer-chars-modified-tick,
which records the value of buffer-modified-tick as of the last
change in the characters in the buffer.

Would someone like to implement this?

       reply	other threads:[~2006-07-20 18:16 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <81CCA6588E60BB42BE68BD029ED4826008838221@wimex2.wim.midas-kapiti.com>
2006-07-20 18:16 ` Richard Stallman [this message]
2006-07-20 19:47   ` jit lock sit-for provokes redisplay provokes imenu Drew Adams
2006-07-20 22:41     ` Richard Stallman
2006-07-21  9:13       ` martin rudalics
2006-07-21 19:37         ` Richard Stallman
2006-07-22  9:01           ` martin rudalics
2006-07-24 14:42             ` Richard Stallman
2006-07-26  9:32               ` martin rudalics
2006-07-21 14:53   ` martin rudalics
2006-07-22  4:38     ` Richard Stallman
2006-07-22  9:21       ` martin rudalics
2006-07-23  7:55         ` martin rudalics
2006-07-24 14:42         ` Richard Stallman
2006-07-26 11:24           ` martin rudalics
2006-07-26 15:10             ` Stefan Monnier
2006-07-26 16:16               ` martin rudalics
2006-07-27 14:35                 ` Stefan Monnier
2006-07-26 22:34               ` Richard Stallman
2006-07-26 22:48                 ` David Kastrup
2006-07-27 16:04                   ` Richard Stallman
2006-07-27 16:27                     ` David Kastrup
2006-07-27 23:45                       ` Richard Stallman
2006-08-03  9:35           ` martin rudalics
2006-08-20 14:28             ` Chong Yidong
2006-08-21 14:20               ` Kim F. Storm
2006-08-21 15:20                 ` Chong Yidong
2006-08-23 15:04                   ` Kim F. Storm
2006-07-26 14:51 Marshall, Simon
2006-07-26 15:48 ` martin rudalics

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