bug#64970: 30.0.50; Stipple broken with PGTK

[Eli Zaretskii]

merge 64970 64969
thanks

> From: magnus@therning.org
> Date: Mon, 31 Jul 2023 11:10:38 +0200
> 
> The code
> 
> (let* ((w (window-font-width))
>       (stipple `(,w 1 ,(apply #'unibyte-string
>                              (append (make-list (1- (/ (+ w 7)
>                              8)) ?\0)
>                                      '(1))))))
>  (insert "\n" (propertize (concat  (make-string 15 ?\s)
>                                   "THIS IS A TEST"
>                                   (make-string 15 ?\s))
>                           'face `(:background "red" :foreground
>                           "blue" :stipple ,stipple))))
> 
> doesn't have the expected result, i.e. the text is not blue on red 
> background.
> 
> More information leading to this report can be found at 
> https://github.com/jdtsmith/indent-bars/issues/3

This is an exact duplicate of bug#64969 that you submitted an hour
before this one.  I'm merging them.