bug#51995: 29.0.50; `string-pixel-width' depends on the current window width

[Brahimi Saifullah]

>Can you explain how you are supposed to apply it?
>
>I tried:
>
>  git apply buffer-text-pixel-size.diff
>
>But all it says is:
>
>  error: corrupt patch at line 12

My bad, it seems the file got corrupted on my end.  I downloaded it from
debbugs.gnu.org and the patch is recognized as valid, yet it does not apply:

  Checking patch lisp/emacs-lisp/subr-x.el...
  error: while searching for:
    "Return the width of STRING in pixels."
    (with-temp-buffer
      (insert string)
      (car (window-text-pixel-size
            (current-buffer) (point-min) (point)))))

  (provide 'subr-x)


  error: patch failed: lisp/emacs-lisp/subr-x.el:446
  error: lisp/emacs-lisp/subr-x.el: patch does not apply


(The only problem is that a new function was added at
 the end of subr-x,  the xdisp.c part does apply fine.)

I've also tested the patch further, using `buffer-text-size' on my
package's implementation of `string-pixel-width', and everything is
is working, including my tests.  Thanks.