From: Jukka K. Korpela (email@example.com)
Date: Sun Jan 04 2009 - 13:21:44 CST
Karl Pentzlin wrote:
> Neither the "glossary" nor the "general index" of the printed Unicode
> 5.0 edition lists the term "representative glyph".
The expression has been somewhat unclear to me, too, and I don’t even
consider it a term—rather, a descriptive expression to be understood as we
normally understand natural language (if we do)
> The printed Unicode 5.0 edition says on p.564 within section 17.1,
> below the header "Images in the Code Charts and Character Lists":
> "Each character in these code charts is shown with a representative
> glyph. A representative glyph is not a prescriptive form of the
> character, but rather one that enables recognition of the intended
> character to a knowledgeable user and facilitates lookup of the
> character in the code charts."
That may look like a definition, but I’
> Did I overlook a more concise definition somewhere?
I don’t know, but it seems to me that there is no more _exact_ definition in
> Are the following statements true?
> 1. The representative glyph of U+0323 COMBINING DOT BELOW is a dotted
> ring on the baseline with a dot beneath of it.
> 2. The representative glyph of U+0020 SPACE is a Latin letter pair
> "SP" surrounded by a dotted square.
> 3. Representative glyphs are always printable using black color on
> white background, without using gray shades and/or other colors.
> 4. The representative glyph of a character is not necessarily a valid
> visual representation of the character itself to be used within its
> plain text use.
> This especially applies to control codes and space characters which
> have no glyphic representation by nature, but also for some special
> cases where the glyphic representation of the character cannot be
> expressed unambiguously within its block by a glyph printable black
> on white, e.g. for U+2011 NON_BREAKING HYPHEN or U+2591 LIGHT SHADE
> (the latter one being a gray shade by nature and by its correct
> 5. The representative glyph does not denote the character
> unambiguously (e.g. U+0042/U+0392/U+0412).
> 6. The reference glyph of the emoji e-B16 (purple heart) may be a
> black and white striped heart (either devised by a scheme to
> represent colors within black and white presentations, like
> heraldry, or simply by a particular decision).
> While the name "STRIPED HEART" is misleading, a it would refer
> to the representative glyph instead of the character itself,
> "EMOJI SYMBOL PURPLE HEART" would be a correct name which denotes
> the identity of the symbol.
> 7. If someone provides evidence for a real "STRIPED HEART" symbol,
> he may propose it, using the same representative glyph as for the
> purple heart.
> - Karl Pentzlin
-- Yucca, http://www.cs.tut.fi/~jkorpela/
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