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    [indic] Don't reorder reph/pref if ligature was expanded · 832a6f99
    Behdad Esfahbod 提交于
    Normally if you want to, say, conditionally prevent a 'pref', you
    would use blocking contextual matching.  Some designers instead
    form the 'pref' form, then undo it in context.  To detect that
    we now also remember glyphs that went through MultipleSubst.
    
    In the only place that this is used, Uniscribe seems to only care
    about the "last" transformation between Ligature and Multiple
    substitions.  Ie. if you ligate, expand, and ligate again, it
    moves the pref, but if you ligate and expand it doesn't.  That's
    why we clear the MULTIPLIED bit when setting LIGATED.
    
    Micro-test added.  Test: U+0D2F,0D4D,0D30 with font from:
    
    [1]
    https://code.google.com/a/google.com/p/noto-alpha/issues/detail?id=186#c29
    832a6f99
hb-ot-shape-complex-indic.cc 59.5 KB