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    <div class="moz-cite-prefix">On 9/9/19 4:04 PM, Corentin Jabot
      wrote:<br>
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cite="mid:CA+Om+SgAS_ak5c6MbcDODv3+GeO957ZL_cmXcwW6B+nqMHphsA@mail.gmail.com">
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          <div dir="ltr" class="gmail_attr">On Mon, 9 Sep 2019 at 21:44,
            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_-3437508304343965657moz-cite-prefix">On
                9/9/19 2:48 PM, Corentin Jabot wrote:<br>
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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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          <div>Sorry, I should quote my sources</div>
          <div><a href="https://unicode.org/glossary/"
              moz-do-not-send="true">https://unicode.org/glossary/</a> </div>
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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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          <div>That does make sense <br>
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    <p>Another interpretation is that a character set might contain only
      'A' U+0041 { LATIN CAPITAL LETTER A } and ' ́' U+0301 { COMBINING
      ACUTE ACCENT }, but its character repertoire contains 'A' and 'Á'
      because both can be represented using the elements of the
      character set.<br>
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    <p>Tom.<br>
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cite="mid:CA+Om+SgAS_ak5c6MbcDODv3+GeO957ZL_cmXcwW6B+nqMHphsA@mail.gmail.com">
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              <p> </p>
              <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"
                      target="_blank" 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_-3437508304343965657gmail-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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