# [XeTeX] The al-Wāḥid (al-W\=a\d hid) macron kerning problem

ITS Mail mail at its.org.uk
Fri Feb 23 17:26:09 CET 2007

Hello

I think I have a kerning problem with a Monotype Opentype font, Bembo
Book MT Pro (let me know if you need to test it). In general I happily
notice several kerning corrections in comparison with the previous
Monotype Bembo, but when I want this:
\textit{al-Wāḥid}

the macron of the ā clashes into the W. I also get exactly the same
clash in TextEdit.

Now, if I use the LaTeX input:
\textit{al-W\=aḥid}
there is no clash, but the macron is not a real one of course, rather
too thin...

I have tried fontspec's kerning options with no success, and I have
done this for the time being:
\textit{al-W{\kern -.4pt}āḥid}
but I wonder if a kind TeXnician can give real solution that is not so
localised. I seem to remember the NFSS has something like declarations
of pairs of characters whose kerning needs modification, or is this
wishful remembering? I have many such Wā combinations in my document,
so I would rather have something in the preamble to correct these pairs
automatically.

Incidentally, is it worth letting the people at Monotype know about
this kind of problem? Anyone with experience in this regard?

Servus

Juan Acevedo
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Islamic Texts Society
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