OK. Attached is a pdf file showing the difference between two xetex version. The result of old version which uses ICU layout engine is correct one. I have drawn boundary lines around the sample texts, so that we can easily catch the difference.
2013/3/16 Konstantin Ritt <[email protected]>: > Hi, > > Can you attach a screenshots of these characters rendered with both > old and new XeTeX and some of the mentioned fonts? > A screenshots of "U+115F U+1161 U+112B U+1160" sample could be useful too. > > Konstantin > > > 2013/3/16 Dohyun Kim <[email protected]>: >> Hi, >> >> While testing new version of xetex which uses harfbuzz-ng for opentype >> rendering, I have encountered a serious issue about Hangul Jamo >> typesetting. The reason is that U+115F and U+1160 are assigned to >> "default_ignorable" code points in hb-unicode-private.hh. >> >> Certainly, according to unicode standard, these two characters are >> Default_Ignorable_Code_Point. However, although the exact meaning of >> "default ignorable code point" is not always clear to me, I am 100% >> sure that these two characters should not be ignored in opentype >> rendering. >> >> Any Hangul fonts currently available gives wrong output with current >> version of harfbuzz-ng. Take any font supporting Hangul Jamo, eg. >> malgun.ttf in windows 8, jieubsida otf at >> http://sourceforge.jp/projects/tsukurimashou/, unbatang ttf at >> http://kldp.net/projects/unfonts/, or HCR-LVT fonts which is currently >> not accessible but was avaliable at >> http://ftp.ktug.or.kr/KTUG/hcr-lvt/. Then run hb-shape --script=hang >> with input string "U+115F U+1161 U+112B U+1160". We get three >> zero-width glyphs instead of two; this is wrong. >> >> So please remove U+115F and U+1160 from default_ignorable code points, >> whatever the unicode standard says about them. >> >> Regards, >> -- >> Dohyun Kim >> College of Law, Dongguk University >> Seoul, Republic of Korea >> _______________________________________________ >> HarfBuzz mailing list >> [email protected] >> http://lists.freedesktop.org/mailman/listinfo/harfbuzz -- Dohyun Kim College of Law, Dongguk University Seoul, Republic of Korea
hbtest.pdf
Description: Adobe PDF document
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