Cursor on images not visible

[Juri Linkov]

Moving point on small thumbnail images in the Emacs buffer reveals the
following problem: the cursor around the image is not visible when the
cursor type is box and the image has a dark background, or when the cursor
type is bar and the image has a light background.

But when the image displayed in Emacs has the value of `:margin' greater
than 0, then the cursor is visible (as a frame around the image).

So how about changing the default value of the property `:margin'
from 0 to 1?  This is better than fixing all packages (e.g. iimage.el
and cus-edit.el for button images) and adding `:margin 1' to every
image specification.

-- 
Juri Linkov
http://www.jurta.org/emacs/