From: Karl Pentzlin (firstname.lastname@example.org)
Date: Wed Feb 28 2007 - 10:30:44 CST
Am Mittwoch, 28. Februar 2007 um 15:46 schrieb Jon Hanna:
>> I prefer ... don't encode them.
This of course is the option to choose as long as there is no evidence
of use of such marks in plain text. Such evidence can rise e.g. if you
want to cite exactly handwritten texts containing lists using such marks.
A proposal must show such evidence to the extent that L2/04-227 shows
for counting rod numbers (or are the hurdles higher here?)
JH> Agreed (...). I'm not seeing how tallies work in static
JH> text other than as glyph variants for U+0031 through U+0035
More or less, this could be said for all number forms, from Roman
numerals to counting rods.
JH> ... Surely if there is any value in having tallies in there
JH> it's in their numerical meaning.
I consider this secondary to the simple possibility to have the
symbols at hand to cite a text containing them.
JH> Unicode encodes characters, not glyphs.
JH> These characters already mean something, often something mathematical.
JH> ... Note that your "con" of "Another character consisting
JH> simply of a vertical line" is bogus.
Admitted. But Unicode does not follow the principle strictly.
E.g. when encoding the metrical symbols U+23D1..23D9 (L2/02-315),
e.g. the longum was not encoded separately, as "2012 or 2013" could
be used, violating the strict "character not glyph" principle.
In fact, I had exactly this decision in mind when I tried to
speculate which vertical line characters could be reused as tally marks.
JH> ... "divide divide divide" does not mean 3.
Yes. And "multiply" (U+00D7) does not mean "anceps" (referring again
to the metrical symbols).
I still do not really understand why such fine semantic differences
like between U+2980 TRIPLE VERTICAL BAR DELIMITER and U+2AF4 TRIPLE
VERTICAL BAR BINARY RELATION justify different encodings, while
"abbreviation dot" and "sentence ending full stop" do not (besides
history and legacy, of course).
JH> ... Tallies are either a dynamic way to keep a tally and
JH> as such cannot be meaningfully used in static text, or are used
JH> stylistically as glyph variants of the numbers 1 through 5 which are
JH> already encoded at U+0031 through U+0035. Hence we don't need to encode
- as long as the "either ... or" is true and there is no evidence shown
for another uses.
- Karl Pentzlin
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