From: "Tobias C. Rittweiler" <tcr@freebits.de>
To: emacs-devel@gnu.org
Subject: Re: `font-lock-extend-region-functions' vs. `font-lock-extend-after-change-region-function'
Date: Wed, 29 Apr 2009 19:40:06 +0200 [thread overview]
Message-ID: <87ocufz7d5.fsf@freebits.de> (raw)
In-Reply-To: jwvfxfrwplp.fsf-monnier+emacs@gnu.org
Stefan Monnier <monnier@iro.umontreal.ca> writes:
> > But the new region that EXTEND is called with begins at 523, and not 701
> > even though we processed the region between 523 and 701 already.
> > This seems more inefficient than it needs to be if I'm not missing
> > anything.
>
> You're not missing anything. It's an inefficiency in jit-lock, indeed.
> jit-lock asks font-lock to highlight 1-523 and font-lock has no way to
> tell jit-lock that the first call already highlighted 1-701, so next
> time jit-lock needs highlighting it will do 523-1034 because it doesn't
> know that 523-701 was done already.
Is this intended to be fixed? For example, the extending of the
font-lock region could be made a seperate step which
`jit-lock-fontify-now' has to run explicitly.
-T.
next prev parent reply other threads:[~2009-04-29 17:40 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-28 15:34 `font-lock-extend-region-functions' vs. `font-lock-extend-after-change-region-function' Tobias C. Rittweiler
2009-04-28 16:10 ` Stefan Monnier
2009-04-28 20:45 ` Tobias C. Rittweiler
2009-04-29 10:42 ` Tobias C. Rittweiler
2009-04-29 13:46 ` Stefan Monnier
2009-04-29 17:40 ` Tobias C. Rittweiler [this message]
2009-04-29 20:26 ` Stefan Monnier
2009-04-29 20:45 ` Samuel Bronson
2009-04-29 20:53 ` Stefan Monnier
2009-05-01 16:37 ` Tobias C. Rittweiler
2009-05-04 19:08 ` Stefan Monnier
2009-05-07 12:30 ` Tobias C. Rittweiler
2009-05-16 12:26 ` Tobias C. Rittweiler
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