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Subject: |
[24.0.50] end-of-buffer cursor position with an overlay |
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Date: |
Wed, 21 Jul 2010 17:59:23 +0900 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
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
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--- Begin Message ---
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Subject: |
Re: bug#6687: [24.0.50] end-of-buffer cursor position with an overlay |
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Date: |
Fri, 19 Nov 2010 18:36:34 +0200 |
> From: Tetsuo Tsukamoto <address@hidden>
> 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.
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