2013/3/18 Khaled Hosny <[email protected]>: > On Mon, Mar 18, 2013 at 11:11:18AM +0100, Zdenek Wagner wrote: >> 2013/3/16 Khaled Hosny <[email protected]>: >> > Hi, >> > >> > I can not really tell if this is a bug or a feature, bug HarfBuzz >> > normalization is independent of input normalization to technically the >> > input text is not normalised, but it makes little difference with the >> > PDF output. >> > >> > If you still think this is an issue, please raise it again on HarfBuzz >> > mailing list since your old message went unanswered. >> >> I know nothing about Chinese but as I know, in Devanagari characters >> with nukta as QA, ZA, FA (and a few others) exist as glyphs with their >> own codepoints but can also be entered as KA, JA, PHA with combining >> nukta. As I read somewhere, some fonts contain QA, ZA, FA, some fonts >> do not. If JA + nukta is normalised to ZA but ZA does not exist in the >> font, the character could not be rendered. NFD may be equally bad, if >> ZA is decomposed to JA + nukta and the font does not contain nukta, >> the character could not be rendered. So it may be an issue but I do >> not know whether such problems may occur in nowadays' fonts. Similar >> problem may occur even in latin scripts with combining diacritical >> marks. The accented glyphs need not exists. Nowadays' fonts contain >> all accented characters needed for languages as Czech, Slovak, Polish, >> French but I do not know how widely Vietnamese is supported. > > HarfBuzz takes account of what glyphs exist in the font when choosing > the normalization strategy, so such issue should not occur, if it does > then it is a bug and let us know about it. > Thank you for explanation. My note was just theoretical, all fonts I use (both commercial and free) contain all glyphs, so for me personally NFC is no problem.
> Regards, > Khaled > > > -------------------------------------------------- > Subscriptions, Archive, and List information, etc.: > http://tug.org/mailman/listinfo/xetex -- Zdeněk Wagner http://hroch486.icpf.cas.cz/wagner/ http://icebearsoft.euweb.cz -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
