Comment 14 for bug 656690

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Frédéric Grosshans (fgrosshans) wrote : Re: Expansion: (ả, ẻ, ủ, ẽ, ớ, ờ) for Vietnamese in Latin Extended Additional

Note that the diacritical stacking of Vietnamese is not the standard one, especially in the case involving circumflex accent and grave/accute accent, where the accent are kerned side by side. The y with dot below (ỵ) is also preferred with the dot on the right side. This behaviour might be contradictory with the expectations of some African languages, which also need diacritic stacking (see e.g. http://www.openroad.net.au/languages/african/ife-2.html).

Some URL about that problem :
* http://<email address hidden>/msg14279.html
* http://<email address hidden>/msg14280.html
* http://www.riverland.net.au/~clytie/viet/fonts.html
* There is an allusion to that in the Unicode standard (p257/19 below fig5-7, http://www.unicode.org/versions/Unicode6.0.0/ch05.pdf