From: Marcin 'Qrczak' Kowalczyk (qrczak@knm.org.pl)
Date: Sun Jul 15 2007 - 14:43:24 CDT
Dnia 15-07-2007, N o godzinie 10:17 -0700, John Hudson napisał(a):
> I believe ZWNJ should *not* inhibit kerning,
This is what I thought.
Pango inhibits kerning at ZWNJ too.
> In the OT Layout GSUB table, include a lookup that either substitutes
> the base letters for these duplicates in context of a following ZWNJ:
Thank you for the suggestion. It didn't work out of the box, but it
worked with XeTeX when I made such ligatures with ".null" (mapped at
U+0000). ICU does treat ZWNJ somewhat specially, it doesn't put ZWNJ
glyphs in the output stream, and it seems that it replaces them with
".null" glyphs at some stage.
I knew to try to use ".null" because when I did not have a ".null" glyph
in my font, XeTeX replaced ZWNJ with a regular space. This is definitely
an ICU-specific hack, nobody said that ZWNJ should become ".null"...
It doesn't work with Pango, neither do ligatures with ZWNJ.
--
__("< Marcin Kowalczyk
\__/ qrczak@knm.org.pl
^^ http://qrnik.knm.org.pl/~qrczak/
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