Allow counter-clockwise rotations in image-rotate

* lisp/image.el (image-rotate): Extend with an optional argument
specifying the rotation in degrees (bug#35421).
* doc/lispref/display.texi (Showing Images):
* etc/NEWS: Document the change.
* test/lisp/image-tests.el (image-rotate): New test.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 62418f998c1..41debac50e0 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -2257,6 +2257,11 @@ The image parameters 'image-transform-rotation',
 buffer-local, so each buffer could have its own values for these
 parameters.
 
++++
+*** The command 'image-rotate' now accepts a prefix argument.
+With a prefix argument, 'image-rotate' now rotates the image at point
+90 degrees counter-clockwise, instead of the default clockwise.
+
 ** Modules
 
 *** The function 'load' now behaves correctly when loading modules.