Use a white square emoji for blanks

[berrange]

If the park uses a mixture of regular spaces and emoji the alignment will not be preserved nicely in many applications, especially web browsers, because the size of the regular space is not a match for the size of emojis used.

Emoji themselves are not all guaranteed to be the same size in all fonts, but at if we use a 'white large square' it appears to be a more reliable size match for the rest of the emoji.

The downside is that it gives a bit of an appearance of a tiled patio, but personally I prefer that to mangled alignment, so figure it is probably a net win.

[philmd]

Reviewed-by: Philippe Mathieu-Daudé [email protected]