On 12/21/2010 6:04 PM, Venkatesan. S.K. (TNQ) wrote:
Do unicode committee have a proof of concept application (like Amaya browser for W3 HTML) or a font?

They don't need a PoC application, as the algorithms are fully described. The problems usually occur when specific font features need to be applied in a specific order, and the font engine either lacks the capability to apply them in the right order, or the capability to apply them at all. Being Unicode and OpenType compliant (rather than just compatible) is a fiendishly complex job.

As for the font, the Unicode Consortium uses many different fonts, all contributed by numerous foundries and individuals (see http://unicode.org/charts/fonts.html)

It is possible create a font using all their PDFs but license will be problem, I suppose...

Rather! You are, in fact, expressly forbidden from extracting any font used in the Unicode specification PDF files.

Each and every OS and editors show different levels of compliance...

This is mostly because they all use different engines. Your OS will use Uniscribe, Core Text or (most likely) Pango depending on whether it's windows, mac or *nix, and individual applications may completely ignore these render engines and use their own layout management and glyph fetchers instead.

Depending on how much the developers feel they need to reinvent the wheel because the default engines available don't offer what they need, applications will be more or less Unicode and OpenType compatible (I'm not aware of any text engine that is fully compliant, but if there is one, I'd love to know about it!)

- Mike "Pomax" Kamermans
nihongoresources.com



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