GNU bug report logs - #6687
[24.0.50] end-of-buffer cursor position with an overlay

Previous Next

Full log

View this message in rfc822 format

From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#6687: closed ([24.0.50] end-of-buffer cursor position with an
 overlay)
Date: Fri, 19 Nov 2010 16:34:02 +0000

[Message part 1 (text/plain, inline)]

Your message dated Fri, 19 Nov 2010 18:36:34 +0200
with message-id <83pqu1b78t.fsf <at> gnu.org>
and subject line Re: bug#6687: [24.0.50] end-of-buffer cursor position with an overlay
has caused the GNU bug report #6687,
regarding [24.0.50] end-of-buffer cursor position with an overlay
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
6687: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=6687
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Tetsuo Tsukamoto <czkmt <at> ims.u-tokyo.ac.jp>
To: bug-gnu-emacs <at> gnu.org
Subject: [24.0.50] end-of-buffer cursor position with an overlay
Date: Wed, 21 Jul 2010 17:59:23 +0900

Hi,

Emacs 24.0.50 displays end-of-buffer cursor at different position
from where Emacs 23 does when there is an overlay at eob with
before- or after-string.

Emacs 24.0.50:

o  $ emacs -Q
   Then point is at eob.

o  M-: (overlay-put (make-overlay (point) (point)) 'before-string "?")
   Then cursor is placed on "?".
   (cursor position is indicated with [ and ])

   0) [?]

o  Typing x (or any other char) twice results in the following
   behavior.

   1) [?]x   2) ?xx[]

Emacs 24.0.50, point not at eob:

   0) ?[]   1) ?x[]    2) ?xx[]

Emacs 23.2, point at eob or not at eob:

   0) ?[]   1) ?x[]    2) ?xx[]

So only Emacs 24.0.50 with point at eob displays cursor
differently relative to an overlay placed at eob.

-- 
Tetsuo Tsukamoto

[Message part 3 (message/rfc822, inline)]

From: Eli Zaretskii <eliz <at> gnu.org>
To: Tetsuo Tsukamoto <czkmt <at> ims.u-tokyo.ac.jp>
Cc: 6687-done <at> debbugs.gnu.org
Subject: Re: bug#6687: [24.0.50] end-of-buffer cursor position with an overlay
Date: Fri, 19 Nov 2010 18:36:34 +0200

> From: Tetsuo Tsukamoto <czkmt <at> ims.u-tokyo.ac.jp>
> Date: Thu, 22 Jul 2010 01:25:46 +0900
> Cc: 
> 
> Invoked Emacs with emacs -Q.  After I moved the point so as to meet
> one of the four conditions mentioned in results, I did the
> following.
> 
> 0) M-: (overlay-put (make-overlay (point) (point)) 'before-string "?")
> 1) Type x.
> 2) Type additional x.
> 
> Results were as follows (cursor position is indicated with [ and ]).
> 
>  initial point position  :        cursor behavior
> (and (eobp) (eolp))      :  0) [?]   1) [?]x   2) ?xx[]
> (and (not (eobp)) (eolp)):  0) [?]   1) ?x[]   2) ?xx[]
> (and (eobp) (not (eolp))):  0) ?[]   1) ?x[]   2) ?xx[]
> (not (or (eobp) (eolp))) :  0) ?[]   1) ?x[]   2) ?xx[]
> 
> Suppose 1st result may not be expected.  2nd result is also
> different from what Emacs 23.2 produces. 3rd and 4th results seem
> OK.

Sorry for such a long delay, but I finally fixed this (in revision
102440).

Thanks for reporting this, and for a detailed test case.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.