bug#59902: 30.0.50; Image overlay is not updated until the cursor moves to the overlay

[Eli Zaretskii]

> From: Ihor Radchenko <yantar92@posteo.net>
> Cc: 59902@debbugs.gnu.org
> Date: Thu, 08 Dec 2022 19:27:39 +0000
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Can you help me modify the recipe so that I won't need a 'sh'
> > executable that is a Posix shell?
> 
> Ok. Try the following:
> 
> 1. Save colour.png to /tmp/colour.png (300x300)
> 2. emacs -Q
> 3. Open an org file with the following contents
> 
>    <point>
>    
>    [[file:/tmp/colour.png]]
> 
> 4. C-c C-x C-v
> 5. Observe 300x300 image displayed
> 6. Overwrite /tmp/colour.png with colour2.png (500x300)
> 7. C-c C-x C-v
> 8. Image disappear
> 9. C-c C-x C-v
> 10. _Old_ image appears
> 11. Move point to the image. Observe image being updated to the correct
>     500x300 size

Thanks.  I think when the image is replaced, you need to call
clear-image-cache.