[texhax] environment from command

[Reinhard Kotucha]

On 19 November 2010 Barbara Sánta wrote:

 > Hi, an elementary question, but I couldn't find the answer: how could
 > I define an environment from a command such that an argument of it be
 > inside the environment.
 > 
 > Example:
 > 
 > given the next command:
 > \command{fix first argument}{variable second arg}{fix third arg}

If the first and third arguments are constants, you can create another
command in order to reduce the number of arguments:

\newcommand{\foo}[1]{\command{arg1}{#1}{arg3}}

 > Construct the next environment:
 > \begin{environment}
 >   variable second arg
 > \end{environment}

and then you can use it in \newenvironment:

\newenvironment{bar}[1]{\foo{#1}}{}

\begin{bar}{hello}
  ...
\end{bar}

Regards,
  Reinhard

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