GNU bug report logs - #17969
24.3.92; C-p does not move the cursor for some scale text

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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#17969: closed (24.3.92; C-p does not move the cursor for some
 scale text)
Date: Tue, 08 Jul 2014 15:16:01 +0000

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Your message dated Tue, 08 Jul 2014 18:14:57 +0300
with message-id <83ha2rdgr2.fsf <at> gnu.org>
and subject line Re: bug#17969: 24.3.92; C-p does not move the cursor for some scale text
has caused the debbugs.gnu.org bug report #17969,
regarding 24.3.92; C-p does not move the cursor for some scale text
to be marked as done.

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


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17969: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17969
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From: YAMAMOTO Mitsuharu <mituharu <at> math.s.chiba-u.ac.jp>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.92; C-p does not move the cursor for some scale text
Date: Tue, 08 Jul 2014 11:17:25 +0900

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Steps to reproduce:

1. $ emacs -Q -D &
2. Type the following expression and hit C-j in the *scrath* buffer.

  (progn
    (text-scale-set 6)
    (insert (make-string 9 ?\t) "aaaa\n"))

   In my environment, the screen looks like the attached screenshot.

3. Hit C-p twice.

Result:

The first C-p moves the cursor upward, but for the second one (the
cursor stays at the same position).

Unfortunately, some adjustment seems to be necessary for the
reproducing recipe depending on the environment.  The above one is for
the GTK+ build with the xft font backend on OS X 10.9.  For the Mac
port, I had to use the following one, for example:

  (progn
    (text-scale-set 5)
    (insert (make-string 10 ?\t) "aaaaaa\n"))

				     YAMAMOTO Mitsuharu
				mituharu <at> math.s.chiba-u.ac.jp

In GNU Emacs 24.3.92.1 (x86_64-apple-darwin13.2.0, GTK+ Version 3.12.2)
 of 2014-07-07 on YAMAMOTO-no-iMac.local
Repository revision: 117359 rgm <at> gnu.org-20140706235852-o9oxnu7jb525f42v
Windowing system distributor `The X.Org Foundation', version 11.0.11406000
Configured using:
 `configure --without-imagemagick LDFLAGS=-L/opt/local/lib
 CPPFLAGS=-I/opt/local/include'

[cursor-motion.png (image/png, inline)]

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From: Eli Zaretskii <eliz <at> gnu.org>
To: YAMAMOTO Mitsuharu <mituharu <at> math.s.chiba-u.ac.jp>
Cc: 17969-done <at> debbugs.gnu.org
Subject: Re: bug#17969: 24.3.92;
 C-p does not move the cursor for some scale text
Date: Tue, 08 Jul 2014 18:14:57 +0300

> Date: Tue, 08 Jul 2014 11:17:25 +0900
> From: YAMAMOTO Mitsuharu <mituharu <at> math.s.chiba-u.ac.jp>
> 
> 1. $ emacs -Q -D &
> 2. Type the following expression and hit C-j in the *scrath* buffer.
> 
>   (progn
>     (text-scale-set 6)
>     (insert (make-string 9 ?\t) "aaaa\n"))
> 
>    In my environment, the screen looks like the attached screenshot.
> 
> 3. Hit C-p twice.
> 
> Result:
> 
> The first C-p moves the cursor upward, but for the second one (the
> cursor stays at the same position).

I eventually succeeded in reproducing this, and fixed the bug in
revision 117363 on the emacs-24 branch.

Thanks.

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