Hi
How about the following method.
In a text file that contains text that uses Private Use Area characters, start
the file with a sequence of Enclosed Alphanumeric characters from regular
Unicode, that sequence containing the metadata relating to those Private Use
Area characters as used in their present context.
http://www.unicode.org/charts/PDF/U2460.pdf
Use circled digits U+24EA, U+2460 .. U+2469, and Circled Latin letters U+24B6
.. U+24E9.
Use U+2473 as if it were a circled space. The use of 20 to mean a space often
occurs in web addresses. I know that there it is hexadecimal and here it is
decimal but it has the same look of being an encoded space and so that is why I
am suggesting using it.
Start the sequence with PUAINFO encoded using seven circled Latin letters and
any character other than a carriage return or a line feed shows that the
sequence has ended. The use of PUAINFO encoded using seven circled Latin
letters at the start of the sequence is so that text using enclosed
alphanumeric characters for another purpose would not become disrupted.
Then a suitable software application can read the text file and then, either
automatically or after the clicking of a button, extract metadata information
from the sequence of enclosed alphanumeric characters and not display the
sequence of enclosed alphanumeric characters.
Maybe other circled numbers in the range 10 through to 19 would have special
meanings.
This method would keep everything within plane zero.
William Overington
Monday 27 August 2018
----Original message----
>From : unicode@unicode.org
Date : 2018/08/21 - 23:23 (GMTDT)
To : d...@ewellic.org
Cc : unicode@unicode.org
Subject : Re: Private Use areas
On Tue, Aug 21, 2018 at 3:02 PM Doug Ewell via Unicode <unicode@unicode.org>
wrote:
Ken Whistler wrote:
> The way forward for folks who want to do this kind thing is:
>
> 1. Define a *protocol* for reliable interchange of custom character
> property information about PUA code points.
I've often thought that would be a great idea. You can't get to steps 2
and 3 without step 1. I'd gladly participate in such a project.
As would I.
