Subject: bug#18504: 24.3.93; posn-at-point intermittently returns wrong value for a valid buffer position

From: Dmitry Gutov <[email-masked]>
Date: Fri, 19 Sep 2014 14:25:05 +0400

On 09/19/2014 10:21 AM, Eli Zaretskii wrote:

 > I have no idea, since the recipe includes too many factors, and the
> problem is intermittent and timing dependent.  Need a simpler recipe.

That's too bad.

Wouldn't setting a conditional breakpoint help? For example, when the 
return value is right, returned position's X coordinate is non-zero. 
However, when the bug manifests, and `bidi-display-reordering' is nil, 
the X coordinate of the returned position is zero.