[Webkit-unassigned] [Bug 174418] [HarfBuzz] Decomposed Vietnamese characters are rendered incorrectly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=174418

--- Comment #2 from Fujii Hironori <Hironori.Fujii at sony.com> ---
HarfBuzzShaper should normalize the input text before shaping.

Actually, HarfBuzzShaper::setNormalizedBuffer does the task.
https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/platform/graphics/harfbuzz/HarfBuzzShaper.cpp?rev=219385#L233

But, this function hasn't called from anywhere since Bug 108077.

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