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

[Garth Wallace]

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.

On Wed, Mar 16, 2016 at 5:45 PM, Andrew West <andrewcwest at gmail.com> wrote:
> Hi Frédéric,
>
> The historic use of ideographic numbers for marking Go moves are
> discussed in the latest draft of my document:
>
> http://www.babelstone.co.uk/Unicode/GoNotation.pdf
>
> Andrew
>
>
> On 16 March 2016 at 13:35, Frédéric Grosshans
> <frederic.grosshans at gmail.com> wrote:
>> Le 15/03/2016 22:21, Andrew West a écrit :
>>>
>>>
>>> Possibly.  I certainly have very little expectation that a proposal to
>>> complete both sets to 999 (or even 399) would have any chance of
>>> success.
>>
>> And then, there are also the historical example of ideographic numbers used
>> for the same purpose in historic texts (like here
>> http://sns.91ddcc.com/t/54057, here http://pmgs.kongfz.com/item_pic_464349/
>> or here
>> http://www.weibo.com/p/1001593905063666976890?from=page_100106_profile&wvr=6&mod=wenzhangmod
>> ).
>>
>> The above has been found with a quick google search, and I have no idea
>> whether these symbols were used in the running text or not.
>>
>>   Frédéric
>>
>