GNU bug report logs - #11210
(w32-use-visible-system-caret = t) && (scroll-conservatively = 1) results in multiple cursors displayed after scrolling

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Bill Meier <wmeier <at> newsguy.com>
Cc: 11210 <at> debbugs.gnu.org
Subject: bug#11210: Windows emacs 23.4.1: scroll-conservatively > 0 results in	multiple cursors being displayed after scrolling
Date: Tue, 10 Apr 2012 20:21:00 +0300

> Date: Tue, 10 Apr 2012 12:58:08 -0400
> From: Bill Meier <wmeier <at> newsguy.com>
> CC: 11210 <at> debbugs.gnu.org
> 
> Playing around a bit more:
> 
> 1. Start Emacs (scroll-conservatively > 0)
> 2. Adjust w32 window height (aka EMacs frame) to show (say) 24 rows.
> 3. Fill *scratch* with with 32 lines of 'abc'
> 
> Move cursor to top; down-arrow to end of buffer;
> Repeat;
> 
> No artifacts
> 
> Add 123 as last line of the buffer.
> Move cursor to top, down-arrow and etc.
> 
> Artifact shows up (almost always) at the end of the buffer.
> 
> abc
> 123
> |
> 
> 
> Strange ....

Probably because of the different dimensions of the letters and the
digits.

If you go to one of the 'a' characters and type "C-u C-x =", what font
does Emacs show as being used for this character?  Please also do the
same for '1' and see what it says then.

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