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bug#6687: [24.0.50] end-of-buffer cursor position with an overlay
From: |
Tetsuo Tsukamoto |
Subject: |
bug#6687: [24.0.50] end-of-buffer cursor position with an overlay |
Date: |
Thu, 22 Jul 2010 01:25:46 +0900 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
Sorry for many postings,
With additional testings I found the following relationships
between point positions and the cursor behaviors under Emacs
24.0.50.
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.
--
Tetsuo Tsukamoto