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bug#1201: Another overlay display bug
From: |
Richard Stallman |
Subject: |
bug#1201: Another overlay display bug |
Date: |
Sun, 19 Oct 2008 01:00:55 -0400 |
Here's another bug that was reported a year ago
which I think should not be forgotten.
From: Richard Stallman <rms@gnu.org>
Content-Type: text/plain; charset=ISO-8859-15
To: emacs-devel@gnu.org
Subject: Another overlay display bug
Reply-To: rms@gnu.org
Message-Id: <E1IjVDM-0001BJ-AH@fencepost.gnu.org>
Date: Mon, 10 Dec 2007 10:19:14 -0500
Would someone please fix this, then ack?
To: bug-gnu-emacs@gnu.org
From: Joe Wells <jbw@macs.hw.ac.uk>
Date: Sat, 20 Oct 2007 06:43:43 +0100
In-Reply-To: <86k5pi9wrg.fsf@macs.hw.ac.uk> (Joe Wells's message of "Sat\,
20 Oct 2007 06\:32\:19 +0100")
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Subject: Re: two display bugs involving interactions between after-string
and display properties of adjacent overlays
Joe Wells <jbw@macs.hw.ac.uk> writes:
> Here are two more display bugs I found while trying to improve the
> code in tex-fold.el in AUCTeX.
Here is a third such bug.
> These bugs involve interactions between after-string and display
> properties of adjacent overlays.
Ditto.
> I'm assuming this macro in my reproduction code below:
>
> (defmacro test-in-fresh-buffer-and-window (&rest body)
> `(progn
> (delete-other-windows)
> (kill-buffer (get-buffer-create "xyzzy"))
> (let ((xyzzy-buf (get-buffer-create "xyzzy")))
> (set-buffer xyzzy-buf)
> (display-buffer xyzzy-buf)
> ,@body
> )))
Ditto.
> BUG #1: ...
> BUG #2: ...
BUG #3: An overlay's after-string property is not displayed if an
immediately following overlay has the empty string as its display
property.
Reproduce with this expression:
(test-in-fresh-buffer-and-window
(insert "ABCD")
(let ((o1 (make-overlay 2 3))
(o2 (make-overlay 3 4)))
(overlay-put o1 'after-string "1")
(overlay-put o2 'display "")))
The above expression should display ?AB1D?.
The above expression wrongly actually displays ?ABD?.
> ======================================================================
> In GNU Emacs 22.1.1 (i686-pc-linux-gnu, GTK+ Version 2.8.20) ...
Same details as in last message.
I hope this bug report is helpful.
--
Joe
- bug#1201: Another overlay display bug,
Richard Stallman <=