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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 &lt;<a
            href="mailto:tom@honermann.net" moz-do-not-send="true">tom@honermann.net</a>&gt;
          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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