<div dir="ltr"><div dir="ltr">On Sun, Sep 8, 2019 at 8:16 PM Tom Honermann <<a href="mailto:tom@honermann.net">tom@honermann.net</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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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">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></div></blockquote><div>I fully endorse overzelousness as applied to Unicode discussions.</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF"><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></div></blockquote><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><div> </div><div>Zach</div></div></div>