[XeTeX] Kerning in spite of a NWNJ

Adam Baker adamb924 at gmail.com
Mon Sep 14 22:07:51 CEST 2009

Although I hope that XeTeX can help me address this question, it might
be more of a Unicode question. I was using XeTeX when I came up with
it. :-)

I just found that when a zero-width non-joiner is placed between two
Arabic letters, kerning rules are not applied. This strikes me as a
bit odd, because in some languages (like Persian) a ZWNJ is used to
force a final form, i.e., to indicate a morpheme break. It's
conceivable that a following glyph would be an isolated form. In that
case, you might need kerning to make the [final]-[isolated] sequence
look better. Is there a way to produce this? (And alternative to ZWNJ


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