[private] Re: Unicode : Greek Extended.

[Doug Ewell]

No, the precomposed characters that were added for compatibility were added back in 1992 or so. It was still possible then, not now.

The problem with Marshallese is that long ago, people thought the difference between cedilla below and comma below was just a glyph choice, so fonts were built that showed either cedilla or comma according to the whim of the designer. It turns out to matter a great deal to some people, so there is now a scramble to complete the disunification. I don't know about the Yoruba line-below.

--
Doug Ewell | Thornton, CO, USA
http://ewellic.org | @DougEwell

-----Original Message-----
From: "Richard BUDELBERGER" <budelberger.richard at wanadoo.fr>
Sent: ‎3/‎16/‎2014 18:51
To: "Doug Ewell" <doug at ewellic.org>
Cc: "everson at evertype.com" <everson at evertype.com>; "cowan at mercury.ccil.org" <cowan at mercury.ccil.org>; "unicode at unicode.org" <unicode at unicode.org>
Subject: re: [private] Re: Unicode : Greek Extended.

Thanks to all of you for your answers :

> Message du 16/03/14 16:41
> De : Doug Ewell
> A : budelberger.richard at wanadoo.fr
> Copie à : 
> Objet : [private] Re: Unicode : Greek Extended.
> 
> Richard BUDELBERGER wrote:
> 
> > A little off topic, but can somebody help me to add three (six) more

Read « three (five) ».

> > characters to Unicode? that is :
> > — GREEK CAPITAL LETTER SIGMA WITH LINE (or MACRON) BELOW : Σ̲ Σ̱ ;
> > — GREEK SMALL LETTER SIGMA WITH LINE (or MACRON) BELOW : σ̲ σ̱ ;

> > — GREEK LETTER STIGMA WITH LINE (or MACRON) BELOW : Ϛ̲ Ϛ̱ ;
> > — GREEK SMALL LETTER STIGMA WITH LINE (or MACRON) BELOW : ς̲ ς̱ ;

Read « GREEK SMALL LETTER FINAL SIGMA WITH LINE (or MACRON) BELOW : ς̲ ς̱ ; ».

> > — GREEK CAPITAL LETTER CHI WITH LINE (or MACRON) BELOW : Χ̲ Χ̱ ;
> > — GREEK SMALL LETTER CHI WITH LINE (or MACRON) BELOW : χ̲ χ̱.
> >
> > See some samples here :
> > https://fr.wiktionary.org/wiki/Category:syriaque.
> 
> Both you and Wiktionary proved why these precomposed characters won't be 
> accepted: because they can already be represented using combining 
> characters. If this were something that could not already be represented 
> any other way, then it would be different.
> 
> Some fonts don't display this correctly; they show the macron partially 
> or completely to the right of the base letter, instead of directly below 
> it. The solution is to use another font, and to ask font vendors to fix 
> this combination so it looks decent.
> 
> The correct combining character is U+0331. U+0332 is intentionally a 
> very long line, suitable for math-type applications. All of the existing 
> "WITH LINE BELOW" characters (which were added for compatibility with 
> existing character sets) decompose to U+0331; nothing decomposes to 
> U+0332.

So if I ask somebody to create and sell a character set with ḇ ḏ ẖ ḵ ḻ ṉ ṟ ṯ ẕ σ̱ ς̱ χ̱ and their capitals, Unicode should add them (σ̱ ς̱ χ̱ and H̱ Σ̱ Χ̱) for 
compatibility ?…

There was the same problem with Yoruba letters with U+0329 « ̩ », and with the new Marshallese alphabet with U+0326 « ̦ ».


R. Budelberger.

> --
> Doug Ewell | Thornton, CO, USA
> http://ewellic.org | @DougEwell ­ 


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