[HarfBuzz] is opentype crazy

Martin Hosken mhosken at gmail.com
Sun Mar 22 23:10:29 PDT 2015

Dear All,

It seems that if I want to insert a glyph (say a dotted circle) between two diacritics, then I can. I can

sub diac1' diac2 by diac1 dottedcircle

or something akin to that. But when I do, because diac1 is a mark and not a ligature, harfbuzz resets the advance of my dottedcircle to 0, even though dottedcircle is listed in gdef as being a base. Is this a bug, he asks hopefully?


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