Re: mouse-face highlighting broken?

[David Reitter <david.reitter@gmail.com>]

On May 6, 2009, at 11:42 AM, Chong Yidong wrote:

> David Reitter <david.reitter@gmail.com> writes:
>
>> I'm trying to track down a problem with mouse faces, where some
>> portions of text propertized with the a mouse-face do not respect the
>> mouse face, or at least not the "background" attribute of the mouse
>> face.  The types of properties I am concerned with here are the
>> background of images and the space allocated using the display/
>> space/:width property.  (See also screenshot.)
>>
>> It may be quicker for me to track down the problem in the code than  
>> to
>> compose a standalone bug report.  Could someone tell me where such
>> properties are evaluated?
>
> Maybe handle_display_prop is what you want.

Thanks, but none of the few changes there cause my problem.

Can people on other systems try this:

(insert
  (propertize
   (concat "Hello"
	  (propertize " " 'display '(space :width 40))
	  "World")
   'mouse-face 'highlight
   ))

The highlight works ok in 22.  In 23, only "Hello" and "World" are  
highlighted - the space in between is not.
As said above, the same applies to backgrounds of images.