bug#17905: 24.3.50; writing with a giant font triggers RTL text entry

[Joe Corneli]

On Thu, Jul 3, 2014 at 3:51 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Joe Corneli <holtzermann17@gmail.com>
>> I was able to replicate the following weird behavior by following the
>> above recipe with emacs -q --no-site-file, using the font that is the
>> default there.

>   - start with "emacs -Q"
>   - enlarge the font by shift-mouse and selecting "Increase Buffer
>     Text Size" N times (please tell what is the value of N)
>   - type the following text: ....

... where N=12 was a value that triggered the effect for me.  Also
note that the Emacs window was full-screen.

A sample text would be: type the alphabet about 2 and a half times,
space separated, and if it works the same way for you as it did for
me, reversal will start after the 3rd "h":

a b c d e f g h i j k l m n o p q r s t u v w x y z a b c d e f g h i
j k l m n o p q r s t u v w x y z a b c d e f g h q p o n m l k j i

However, as a further update to what I wrote before, the exact point
where the reversal is triggered seems to depend on the size of the
window.  With the same setup as above, except, with a 50% smaller
window, I only had to type:

a b c d e f g h i j k l m n o p q r s t u v w x y z a b f e d c