Purpose of and rationale behind Go Markers U+2686 to U+2689

[J Decker]

On Thu, Mar 17, 2016 at 9:18 PM, Garth Wallace <gwalla at gmail.com> wrote:
> There's another strategy for dealing with enclosed numbers, which is
> taken by the font Quivira in its PUA: encoding separate
> left-half-circle-enclosed and right-half-circle-enclosed digits. This
> would require 20 characters to cover the double digit range 00–99.
> Enclosed three digit numbers would require an additional 30 for left,
> center, and right thirds, though it may be possible to reuse the left
> and right half circle enclosed digits and assume that fonts will
> provide left half-center third-right half ligatures (Quivira provides
> "middle parts" though the result is a stadium instead of a true
> circle). It should be possible to do the same for enclosed ideographic
> numbers, I think.
>
> The problems I can see with this are confusability with the already
> encoded atomic enclosed numbers, and breaking in vertical text.
>

I suppose that's why things like this happen in appilcations....

Joined "ti" coded as "Ɵ" in PDF

http://www.unicode.org/mail-arch/unicode-ml/y2016-m03/0084.html

you get an encode of a series of  codepoints, that results in an array
of font glyph-points to render ....