bug#12585: diff refine should highlight space changes better (feature request)

[Lars Ingebrigtsen]

Le Wang <l26wang@gmail.com> writes:

> I see.  I didn't have a background set in my theme.  Thanks for the pointer.
>
> The setting should be a defcustom in diff group so it's easier to discover.

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

I've now done this in Emacs 29.

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   bloggy blog: http://lars.ingebrigtsen.no