Adding half-star to Unicode?

Garth Wallace gwalla at
Thu Jun 23 17:01:18 CDT 2016

But precedent is for separate WITH LEFT HALF BLACK and WITH RIGHT HALF
BLACK geometric shapes.

Also, I'm not sure if the BLACK HALF STAR and STAR WITH LEFT HALF BLACK are
entirely interchangeable. I usually see the former in situations using a
variable number of glyphs, where the number of glyphs shows the rating, as


while I see the latter in ratings with a fixed number of glyphs, where the
number of *filled* glyphs shows the rating, as in:


It seems like either would work in the first case, but the LEFT HALF STAR
would be awkward in the second.

On Thu, Jun 23, 2016 at 2:46 PM, Philippe Verdy <verdy_p at> wrote:

> You're right, mirroring for RTL, and vertical presentation may avoid
> creating 4 characters, only one would then be needed: HALF-BLACK WHITE STAR
> ...
> 2016-06-23 23:34 GMT+02:00 Garth Wallace <gwalla at>:
>> On Thu, Jun 23, 2016 at 12:53 PM, Ken Shirriff <ken.shirriff at>
>> wrote:
>>> Half-stars are used all over the place for reviews and many people have
>>> expressed interest in a Unicode half star. I propose two new Unicode
>>> characters: half a BLACK STAR (★) and a half-filled WHITE STAR (☆), i.e. a
>>> half star without and with an outline. What do you think? Is there any
>>> reason Unicode doesn't have a half star?
>>> Ken
>> Ratings are usually sequences of stars, with any half star coming at the
>> end, like ★★★(half), AIUI, so it's usually the left side that's black.
>> But what about in right-to-left contexts? Would they be bidi-mirrored?
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