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https://bugzilla.redhat.com/show_bug.cgi?id=623085
--- Comment #5 from Qianqian Fang fangqq@gmail.com 2010-08-20 09:03:07 EDT --- This is not an easy fix. Essentially, this is a result of RemoveOverlap() in Fontforge. Quoted from GWW, the author of Fontforge, this part of the code is the "buggiest". Especially, for CJK glyphs, this function generates incorrect contours. Unless someone look into this code and fix it in fontforge, this will comeback even we can manually correct these glyphs in the font file.
http://fontforge.sourceforge.net/elementmenu.html#Remove http://wenq.org/forum/viewtopic.php?f=6&t=613