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    <div class="moz-cite-prefix">On 9/9/19 2:48 PM, Corentin Jabot
      wrote:<br>
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cite="mid:CA+Om+ShfaZH3xoY=O8UoAHsKCZGX_xpJLAYTAPp-MD_ha0a6wA@mail.gmail.com">
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      <div dir="ltr">Character Repertoire. The collection of characters
        included in a character set.<br>
        Character Set. A collection of elements used to represent
        textual information<br>
        Coded Character Set. A character set in which each character is
        assigned a numeric code point. Frequently abbreviated as
        character set, charset, or code set; the acronym CCS is also
        used.<br>
        Abstract Character. A unit of information used for the
        organization, control, or representation of textual data.<br>
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    Where did the above terms come from?<br>
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cite="mid:CA+Om+ShfaZH3xoY=O8UoAHsKCZGX_xpJLAYTAPp-MD_ha0a6wA@mail.gmail.com">
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        I will admit i am confused. It's either Character Set or
        Character Repertoire</div>
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    <p>I suppose the above definitions could be read such that a
      character set may include members that cannot exist in any
      character repertoire.  For example, escape characters or other
      not-really-a-character things like variation selectors.<br>
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    <p>Tom.<br>
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        <div dir="ltr" class="gmail_attr">On Mon, 9 Sep 2019 at 20:37,
          Zach Laine &lt;<a href="mailto:whatwasthataddress@gmail.com"
            moz-do-not-send="true">whatwasthataddress@gmail.com</a>&gt;
          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" target="_blank"
                moz-do-not-send="true">tom@honermann.net</a>&gt; wrote:<br>
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                  <div
class="gmail-m_9193783060828308378gmail-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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                  <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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              <div>Zach</div>
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