General ⇒ Problem with newfile.sty: using writeverbatim in a macro

[dguaspari]

I'm trying to use newfile.sty and find myself unable to define a macro that contains the writeverbatim environment.

For example, LaTeX works fine on this file:

\documentclass[12pt]{report}
\usepackage{newfile}

\newoutputstream{charax}
\openoutputfile{\jobname.drp}{charax}

\begin{writeverbatim}{charax}
A
\end{writeverbatim}

\closeoutputstream{charax}

\begin{document}

\input{\jobname.drp}

\end{document}


But if I enclose the writeverbatim environment within a macro, LaTeX fails with the message

Runaway argument?
! File ended while scanning use of \next.

Here's the packaged version:

\documentclass[12pt]{report}
\usepackage{newfile}

\newoutputstream{charax}
\openoutputfile{\jobname.drp}{charax}

\newcommand{\Fee}{
\begin{writeverbatim}{charax}
A
\end{writeverbatim}
}

\Fee

\closeoutputstream{charax}

\begin{document}

\input{\jobname.drp}

\end{document}

In case it's relevant, I'm using MiKTeX 2.7. I haven't been able to find anything about this on the web. Any help would be appreciated.

--
David Guaspari

[rf]

This is the traditional "verbatim within another
command" problem (see http://www.tex.ac.uk/cgi-bin/texfaq2htm ... verbwithin)

\openoutputfile{\jobname.drp}{charax}

\begin{writeverbatim}{charax}
A
\end{writeverbatim}

\closeoutputstream{charax}

looks like a simplified example, since it contains no
parameter-derived text and so may just as well appear
outwith a macro; what in fact are you aiming to achieve?