[XeTeX] misplaced diacritical marks

[David J. Perry]

Alexander,

Are you including the xunicode package, which translates the traditional TeX 
keystrokes into their Unicode equivalents?  The following minimal example 
works for me (Windows, MiKTeX 2.7) with marks correctly placed.  I happen to 
have the Unicode values for the diacritics memorized, so I just typed them 
in, but you could equally well paste the actual characters from BabelMap or 
Character Viewer or whatever utility you have.

David

% !TEX TS-program = xelatex
% !TEX encoding = UTF-8

\documentclass[11pt]{article}

\usepackage{fontspec}
\defaultfontfeatures{Mapping=tex-text}
\usepackage{xunicode}
\usepackage{xltxtra}

\setmainfont{Junicode}

\begin{document}

\LARGE
la\char"0304 \char"0323 m
hy\char"0304\char"0301 s

\end{document}


----- Original Message ----- 
From: "Alexander Schultheiß" <aschulth at googlemail.com>
To: <xetex at tug.org>
Sent: Monday, August 30, 2010 8:50 PM
Subject: [XeTeX] misplaced diacritical marks


> Hey,
>
> I'm new to xetex/xelatex and I have problems with diacritical marks. I
> found another thread describing a similar problem but the original
> question sadly isn't addressed
> (http://tug.org/pipermail/xetex/2004-August/000668.html).
>
> Does xelatex honor anchors in GPOS tables of otf/ttf fonts? If I try
> to place, say, a macron above an 'a' as well as a dot below it one of
> the two diacritical marks is always misplaced; depending on the oder
> of xelatex commands:
>
> \d{\={a}} dot misplaced
> \={\d{a}} macron misplaced
>
> I tried it with my own font as well as with Junicode. The problem does
> not depend on the choice of font, it seems. Also, if I try to place an
> acute above a+macron the diacritics do not stack. Even worse, if
> a+macron is not pre-composed within the font, xelatex is unable to
> assemble it (Why?!). So my suspicion is that xelatex doen't honor
> anchors within GPOS tables. Is this correct or do I miss something? If
> correct, is there a way to make xelatex recognize anchors?
>
> Thanks
>
>
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