Re: Testing native image scaling

[Andy Moreton <andrewjmoreton@gmail.com>]

On Thu 28 Mar 2019, Eli Zaretskii wrote:

>> From: Andy Moreton <andrewjmoreton@gmail.com>
>> Date: Thu, 28 Mar 2019 18:06:17 +0000
>> 
>> Should the <kp-subtract> and <kp-add> bindings for `image-decrease-size'
>> and `image-increase-size' be adjusted to handle sliced images ?
>
> It would be nice, yes.

A little experimentation shows that changing `image--get-image' as below
seems to be sufficient to work for normal and sliced images:

(defun image--get-image ()
  "Return the image at point."
  (let ((image (get-char-property (point) 'display))
        result)
    (when (consp image)
      (if (eq (car image) 'image)
          (setq result image)
        (dolist (x image)
          (if (eq (car-safe x) 'image)
              (setq result x)))))
    (when (null result)
      (error "No image under point"))
    result))

>> Is image rotation expected to work on Windows ?
>
> Not without ImageMagick, no.  (And not only on Windows, AFAIK.)

ok, but if ImageMagick is not available it used to complain and now does
not. It should still report the same error message rather than failing
silently.

    AndyM