Partly OT: some luatex questions

[Ulrike Fischer <news2@nililand.de>]

I'm currently trying if I can use luatex on my miktex installation and
together with LaTeX. 

I have downloaded the executable (Version snapshot-0.29.0-2008071816)
from the context-minimals and made a simple texmf.cnf and build some
formats (the formats don't contain something luatex specific, they
simply load latex.ltx). Things works quite fine, my (pdf)lualatex is
running and is finding all the ressources (fonts, styles etc) from my
miktex-trees. 

But I have some problems I don't know how to solve.

1. In the following document there is no space between the a and the y:

\documentclass{article}
\begin{document}
\noindent a\\y 

\bigskip  

a\par y
\end{document}

It looks as if the lines have only the depth from their content. 

2. I found here some code to use truetype and opentype fonts:
http://luatex.bluwiki.com/go/Use_a_TrueType_font

But while testing the code I run in two two problems:
a) I tested it with a latin modern font and arial and with both fonts
all lines of a text are printed one above the other. It looks as if none
of the lines have a height and a depth. 

b) I also tried MnSymbol5.otf and there I get an error "invalid
character". (I tried to get an "A"). With xetex the font works fine. 

I would be quite grateful if someone could tell me how to solve this
problems. 

-- 
Ulrike Fischer 

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