Re: DIY OpenType Re-ordering

From: John Hudson (
Date: Fri Mar 24 2006 - 12:53:49 CST

  • Next message: Kent Karlsson: "RE: Representative glyphs for combining kannada signs"

    Kent Karlsson wrote:

    > What do you mean? The short-i matra (if fully implemented) glyph
    > should be displayed to the left of the display of *any* combining
    > sequence it is applied to.

    But the 'combining sequence' is not always the full conjunct. If the first consonant in a
    conjunct takes an explicit virama form, then the I matra is positioned to the right of
    this and to the left of the half-form or ligature making up the remainder of the conjunct.
    This was discussed on the Indic list a couple of years ago, and well documented by Stephan
    Baum. My colleague Fiona Ross has confirmed this rule in her own researches at SOAS.

    MS have implemented new handling for this in the Windows Vista version of Uniscribe,
    although non-updated fonts will continue to behave in the old way and the I matra glyph
    will precede the whole conjunct regardless of how the conjunct is formed. To get the new,
    more correct behaviour you have to build your fonts in a slightly different way.

    John Hudson

    Tiro Typeworks
    Vancouver, BC
    I am not yet so lost in lexicography, as to forget
    that words are the daughters of earth, and that things
    are the sons of heaven.  - Samuel Johnson

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