Re: Unicode 5.1, Egyptian Transliteration, and Fonts

Michael Everson wrote:
> At 16:28 -0600 2007-11-30, Benjamin M Scarborough wrote:

...


>> This will also require changing the script of U+0486 from 'Cyrillic' to
>> 'Inherited.'
> 
> Only if it matters.

It may. OpenType rendering engines generally apply lookups to one specific 
script at a time. Having lookups involving glyphs for characters from two 
scripts could be problematic in some cases.

In some OT shaping engines you might have to have U+0486 flagged as both 
"Cyrillic" and "Latin". Classifying it as script "Inherited" in TUS would at 
least alert people to this.

Personally I feel combining marks which cross script boundaries are not a very 
good idea.

- C

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