From: Mike Ayers (email@example.com)
Date: Wed Sep 22 2004 - 18:24:29 CDT
> From: firstname.lastname@example.org
> [mailto:email@example.com] On Behalf Of Michael Everson
> Sent: Wednesday, September 22, 2004 2:49 PM
> At 12:13 -0700 2004-09-22, James Kass wrote:
> >What use is a combining enclosing circle which doesn't
> combine and enclose?
> The character is an interchangeable data unit. It combines
> and encloses (nicely at least) only if a font designer has
> drawn a precomposed glyph for it and its enclosed.
...and has mapped that glyph to the proper sequence. Using Outlook
on Windows XP, which gives me some of the better Unicode support available,
I saw James' combining sequence as 2 characters, a four and a circle, even
though the precomposed circled four displayed correctly. On Wordpad with
alt-x, I confirmed the circle as 20dd, then found it would not render
correctly when I hit alt-x again. ???
> And there
> are a lot of things that could be enclosed.
Yep. Productive sequences are very useful in principle and rather
useless in practice.
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