bug#47074: Replace XPM icons with Unicode codepoints in customize/widgets

[Stefan Kangas]

Eli Zaretskii <eliz@gnu.org> writes:

> Since librsvg is an _optional_ dependency, IMO the answer is YES by
> definition, right?

OK.

>> Perhaps fixing this it is as easy as moving/copying the old XPM files to
>> ui/<newnames>.xpm, but I'd need to test it as I didn't study the code
>> very closely.
>
> Yes, I think copying the XPM file would be okay.
>
> Alternatively, we could move and rename the new SVG files.  They are
> in a separate directory just because of the license?  If so, I don't
> think that's a string enough reason to segregate them, we could just
> mention in the README in etc/images that these files (with an explicit
> list) are from so-and-so place under such-and-such license.

I mostly placed them there as the old names were to my mind not ideal,
and I hoped we could have something better/more consistent.

Here's a comparison:

    OLD NAME          NEW NAME
    ---------------   ---------------
    checked.xpm       ui/checkbox.svg
    unchecked.xpm     ui/checkbox-checked.svg
    N/A               ui/checkbox-mixed.svg
    N/A               ui/radio-checked.svg
    N/A               ui/radio-mixed.svg
    N/A               ui/radio.svg
    custom/down.xpm   ui/triangle-down.svg   [not yet added]
    N/A               ui/triangle-left.svg   [not yet added]
    custom/right.xpm  ui/triangle-right.svg  [not yet added]
    N/A               ui/triangle-up.svg     [not yet added]