From: Philippe Verdy (email@example.com)
Date: Sat Jul 19 2003 - 14:24:48 EDT
On Saturday, July 19, 2003 1:55 PM, Michael Everson <firstname.lastname@example.org> wrote:
> Hm. See http://developer.apple.com/fonts/LastResortFont/ where it
> shows glyphs for "illegal" characters (FFFE/FFFF etc.) as well as
> "undefined" characters (valid code positions which have not been
> assigned). I thought somehow that there was a glyph for "broken"
> characters (characters that were just plain wrong) as well.
Isn't this page creating the idea for a specific block of
script-representative glyphs, that could be mapped in plane 14
as special supplementary characters ?
If the estimated number of Unicode blocks is expected to be
under 1024, this block would use one special character to
represent the glyph, i.e. not a control character, but a symbol
representative of each assigned Unicode block. If such
assignment is not easy to estimate now, glyphs for scripts
should be assigned in the order of their definition in successive
versions of Unicode).
So fonts containing these glyphs could be designed to display
these glyphs, in a way similar to the current assignment of control
pictures. This page already gives the names of the characters
according to the official names of scripts, but a more uniform
name than the Postscript name could be used, such as:
UNASSIGNED BLOCK SYMBOL,
UNASSIGNED CHARACTER SYMBOL,
ILLEGAL CHARACTER SYMBOL,
BASIC LATIN SCRIPT SYMBOL,
EXTENDED LATIN 1 SCRIPT SYMBOL,
By itself, this Apple Developers page is nearly the base for such
proposal. If needed, the Unicode "blocks.txt" could specify additional
columns to specify the assignment of each script block, with
special entries for the symbol used to represent unassigned
characters in assigned blocks, or unassigned blocks.
-- Philippe. Spams non tolérés: tout message non sollicité sera rapporté ŕ vos fournisseurs de services Internet.
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