Wrap latex environment

Question

I'm a beginning latex user. I have some programming code in my document which I format using the lstlisting environment from the package listings.

However this still allows the code segments to be split into two pieces when placed near the end of a page.

To fix this I also use a figure environment for code. This causes an often recurring pattern:

\begin{figure}[H]
\begin{lstlisting}
..code..
\end{lstlisting}
\end{figure}

How can I define a new environment for this pattern? I tried:

\newenvironment{mylisting}
{
\begin{figure}[H]
\begin{lstlisting}
}
{
\end{lstlisting}
\end{figure}
}

However using this environment gave errors all over.

Answer 1

The problem is that the listings package needs to make all kinds of changes to the internals of LaTeX in order to evaluate the contents of the lstlisting environment in a non-LaTeX way. In particular it shuts down expansion of control sequences starting with \ so the end code to your mylisting environment gets passed right by.

If all you want to do is have a listing in a float, you can do

\begin{lstlisting}[float=h]
...
\end{lstlisting}

You might find some of these questions about the listings package on the TeX SE useful as well.