From: martin rudalics <rudalics@gmx.at>
Cc: emacs-devel@gnu.org
Subject: Re: jit-lock doesn't honor font-lock-lines-before
Date: Tue, 30 Aug 2005 08:54:13 +0200 [thread overview]
Message-ID: <43140295.4000102@gmx.at> (raw)
In-Reply-To: <E1E9fAo-0005BX-Ax@fencepost.gnu.org>
> (2) Modify `jit-lock-after-change' appropriately by, for example, inserting
>
> (forward-line (- font-lock-lines-before))
>
> before
>
> (setq start (line-beginning-position))
>
> That seems like the right fix. Why do you think it isn't?
>
>
Because this means that every time I insert one character, redisplay
would refontify `font-lock-lines-before' in addition to the current
line. I suppose that the impact of this variable has not been noticed
so far because jit-lock doesn't consider it.
On the other hand, jit-lock wouldn't be able to handle this variable in
the same way as font-lock does: font-lock refontifies immediately in the
after-change hook. jit-lock's after-change hook would only reset the
fontified property to nil. Whether and when these lines are refontified
would be _also_ decided by the redisplay engine. And the latter doesn't
know about `font-lock-lines-before'. For example, editing the first
line in a window would not "include the line before in refontification".
next prev parent reply other threads:[~2005-08-30 6:54 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-28 13:08 jit-lock doesn't honor font-lock-lines-before martin rudalics
2005-08-29 8:39 ` Richard M. Stallman
2005-08-30 6:54 ` martin rudalics [this message]
2005-08-31 0:23 ` Richard M. Stallman
2005-09-01 6:22 ` martin rudalics
2005-09-01 14:11 ` Stefan Monnier
2005-09-02 5:24 ` martin rudalics
2005-09-02 6:04 ` Richard M. Stallman
2005-09-02 14:30 ` Stefan Monnier
2005-08-31 14:36 ` Richard M. Stallman
2005-08-29 14:13 ` Stefan Monnier
2005-08-30 12:11 ` martin rudalics
2005-08-31 2:47 ` Stefan Monnier
2005-09-01 6:24 ` martin rudalics
2005-09-01 13:49 ` Stefan Monnier
2005-09-02 6:05 ` Richard M. Stallman
2005-09-02 18:45 ` Stefan Monnier
2005-09-03 9:07 ` Richard M. Stallman
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