From: Eli Zaretskii <eliz@gnu.org>
To: 14595@debbugs.gnu.org
Subject: bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled
Date: Sun, 16 Jun 2013 19:17:36 +0300 [thread overview]
Message-ID: <83obb6t4gv.fsf@gnu.org> (raw)
In-Reply-To: <m2y5aas8vd.fsf@lifelogs.com>
> From: Ted Zlatanov <tzz@lifelogs.com>
> Date: Sun, 16 Jun 2013 05:27:50 -0400
>
> On Sun, 16 Jun 2013 05:01:48 +0200 Juanma Barranquero <lekktu@gmail.com> wrote:
>
> JB> On Sun, Jun 16, 2013 at 4:50 AM, Eli Zaretskii <eliz@gnu.org> wrote:
> >> I wasn't aware of any inconsistent display or scrolling behavior in
> >> his description. Juanma, can you repeat that description, which I
> >> probably missed?
>
> JB> With a file containing 1000 identical lines "(lambda (x) x)", the
> JB> lambdas that were incorrectly composed depend on the direction you
> JB> scroll the buffer. Scrolling from the beginning towards the end (page
> JB> by page), I got about 30 errors, always in the same positions
> JB> (distributed non-uniformly). If you repeat the experiment, but go
> JB> immediately to the end and scroll up, you got a different number of
> JB> errors (double or so) at different possitions, also consistents from
> JB> one run to the next.
>
> JB> I suppose that's what Ted is talking about.
>
> Yes. Again, I don't know if this is a problem worth fixing, I was just
> clarifying how it's inconsistent depending on the scroll direction.
It's not a problem. There's no symmetry in how the display engine
handles scrolling up and down, so it exposes portions of the buffer to
font-lock differently depending on the direction of the scroll.
prev parent reply other threads:[~2013-06-16 16:17 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-12 3:18 bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled Juanma Barranquero
2013-06-15 8:21 ` Ted Zlatanov
2013-06-15 9:00 ` Eli Zaretskii
2013-06-15 9:12 ` Eli Zaretskii
2013-06-15 17:35 ` Juanma Barranquero
2013-06-15 17:49 ` Juanma Barranquero
2013-06-15 20:51 ` Juanma Barranquero
2013-06-16 0:13 ` Ted Zlatanov
2013-06-16 0:53 ` Stefan Monnier
2013-06-16 1:19 ` Juanma Barranquero
2013-06-16 1:32 ` Juanma Barranquero
2013-06-16 0:17 ` Ted Zlatanov
2013-06-16 2:50 ` Eli Zaretskii
2013-06-16 3:01 ` Juanma Barranquero
2013-06-16 9:27 ` Ted Zlatanov
2013-06-16 16:17 ` Eli Zaretskii [this message]
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