[XeTeX] Diacritics in color

Khaled Hosny khaledhosny at eglug.org
Fri Dec 2 01:34:13 CET 2011

OpenType has ligature caret info (in GDEF table) but is less flexible
than what Graphite offers (only horizontal position is provided) and
very few fonts, if any, have it.


On Thu, Dec 01, 2011 at 01:56:45PM -0500, Karljurgen Feuerherm wrote:
> I seem to recall from the days when I was doing demos/mock-ups for the
> cuneiform encoding proposal that SIL's graphite/WorldPad combo allowed
> one to do things of this sort; it involved specifying sub-areas in
> special font tables, which the software of course had to know about.
> Not sure whether that's useful to this discussion, but thought I'd
> mention it.
> K
> >>> On Wed, Nov 30, 2011 at  6:31 PM, in message
> >>    f\textcolor{red}{f}
> >
> > In this case FireFox colourises half of resulting ff ligatures (1/3
> in
> > ffi etc), I'm not sure how this is done or if it is possible with PDF
> at
> > all, but that is of limited value anyway specially for ligatures
> that
> > can not be split vertically or into equal parts (ligatures carets
> might
> > provide a clue in the later case, but they are rarely provided by
> font
> > developers).
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