[OS X TeX] Roman> Devanagari, RomDev, fontspec

[TIMOTHY P. LIGHTHISER]

Hi!

It would be great to be able to easily transform accented Roman
characters into Devanagari characters.

It is possible with the minimal example that follows, but I need to
hammer the characters into shape with an extra carriage return (after
having received the error message in the console which is below).

I was able to do the transformation w/o the extra carriage return
several weeks ago, but something has changed (updated to TeX Live
2010?).

I tried putting fontspec.cfg in the same folder as the source file,
but I still need the extra carriage return.
%\aliasfontfeatureoption{Ligatures}{Historic}{Historical}
% \let\newfontinstance\newfontfamily

Ideally, I'd also like to use Mac's Devanagari MT if possible, but
when its selected the conjunct characters do not form.

What can be done?

TIA!

t


%!TEX TS-program = xelatex
%!TEX encoding = UTF-8 Unicode
\XeTeXuseglyphmetrics=1
\documentclass{article}
%\usepackage{polyglossia}
%\setdefaultlanguage{english}
%\setotherlanguage{sanskrit}
\usepackage{fontspec}

\defaultfontfeatures{Mapping=tex-text}
\setmainfont{Charis SIL}
%http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=CharisSILfont

\newfontfamily\sahadevaunicode[Script=Devanagari,Mapping=RomDev]{Sahadeva}
\newcommand{\sahauni}[1]{{\sahadevaunicode\textsanskrit{#1}}}
%http://github.com/somadeva/RomDev > RomDev.map
% http://bombay.indology.info/software/fonts/index.html  > Sahadeva font
% http://cikitsa.blogspot.com/2010_07_01_archive.html > Switching from
Devanāgarī to Roman with a single command

\begin{document}
\sahauni{āsīdrājā nalo nāma vīrsenasuto balī} > āsīdrājā nalo nāma
vīrsenasuto balī
\end{document}


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No file Untitled.aux.
! Undefined control sequence.
\sahauni #1->{\sahadevaunicode \textsanskrit
                                             {#1}}
l.20 ...Åsƒ´drƒÅjƒÅ nalo nƒÅma vƒ´rsenasuto balƒ´}
                                                   > āsīdrājā nalo nāma...

?
[1] (./Untitled.aux) )
Output written on Untitled.pdf (1 page).
Transcript written on Untitled.log.