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<div class="moz-cite-prefix">On 9/9/19 2:37 PM, Zach Laine wrote:<br>
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<div dir="ltr">On Sun, Sep 8, 2019 at 8:16 PM Tom Honermann <<a
href="mailto:tom@honermann.net" moz-do-not-send="true">tom@honermann.net</a>>
wrote:<br>
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<div class="gmail-m_1058650725662133227moz-cite-prefix">On
9/8/19 12:02 PM, Steve Downey wrote:<br>
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<div dir="ltr">Character repertoire sounds good, and I
will eventually learn to spell it. Character set is
definitely terminology from the pre-unicode times, and
unfortunately tends to merge the repertoire and
encoding, <a
href="https://www.iana.org/assignments/character-sets/character-sets.xhtml"
target="_blank" moz-do-not-send="true">https://www.iana.org/assignments/character-sets/character-sets.xhtml</a><br>
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<p>I think I was a little over zealous earlier in stating
that Unicode uses "character repertoire" as I
described. I looked again and don't find that term
formally defined in the standard. However, "repertoire"
is used throughout the standard in ways that I believe
are consistent with my description. I wasn't able to
find an alternative formal term.</p>
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<div>I fully endorse overzelousness as applied to Unicode
discussions.</div>
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:)<br>
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<p>The way I've been thinking about it is that a
"character repertoire" describes a set of <i>abstract
characters</i> (a formal Unicode term) and a
"character set" describes a set of <i>encoded
characters</i> (a formal Unicode term) that associate
each <i>abstract character</i> member of a "character
repertoire" with a <i>code point</i> (a formal Unicode
term) within a <i>codespace</i> (A formal Unicode
term). See sections 2.4 and 3.4 of Unicode 12 and uses
of the word "repertoire" within those chapters. The
Unicode standard does use the term "character set", but
I didn't find a formal definition.</p>
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<div>I think I follow, except that I don't see whether there
is a distinction between "character repertoire" and
"abstract characters". Is there? I'm asking because if
there is not, I'd prefer to standardize the formally
described term, which sounds like is "abstract characters".</div>
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"character repertoire" is singular and, as such, a "character
repertoire" can be given a name. "abstract characters" is plural
and can be used in a more generic sense (e.g., "a property of
abstract characters is that they blah blah").<br>
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<div>Zach</div>
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