Text Formatting ⇒ New Command with multiple optional Arguments

[eleanor]

Hi, I would like to create my own command like lstset.

The command would have the syntax:

Code: Select all

\verbset[a=first_arg, b=second_arg, ..., n=last_arg]

Where I could enter some arguments, which are all optional - like lstset.

How can I do the above.

Thanks in advance

[localghost]

TeX Frequently Asked Questions — More than one optional argument


Thorsten

[eleanor]

Yes I already found that. But I don't thing this is relevant, since I'm only having a command like this:

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\verbset[a=aaa,b=bbb]

So my command code has to recognize the 'a' and 'b' part == key, and assign it the 'aaa' and 'bbb' == value.

So I would rather appreciate an example.

[josephwright]

You will need to define the key-value argument list yourself. You do not say what should happen to 'a', 'b', etc., so I'm assuming they should be stored. For this, you need \define@key to define keys and \setkeys to process them

Code: Select all

\documentclass{article}
\usepackage{keyval}
\makeatletter
\newcommand*\verbseta{}
\newcommand*\verbsetb{}
\define@key{verbset}{a}{\renewcommand*\verbseta{#1}}
\define@key{verbset}{b}{\renewcommand*\verbsetb{#1}}
\makeatother
\newcommand*\verbset[1][]{%
  \setkeys{verbset}{#1}%
  % Your code here
}

[eleanor]

Thank you, you've helped me. But I would still like to tweak it a little further. Currently I'm having the following code:

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\documentclass{article}
\usepackage{keyval}
\makeatletter
\newcommand*\verbseta{aaa}
\newcommand*\verbsetb{bbb}
\define@key{verbset}{a}{\renewcommand*\verbseta{#1}}
\define@key{verbset}{b}{\renewcommand*\verbsetb{#1}}
\makeatother
\newcommand*\verbset[1][]{%
  \setkeys{verbset}{#1}%
  % Your code here
}


\newenvironment{env}
{
  Arguments: a = {\verbseta} ; b = {\verbsetb}
}
{ 
  \renewcommand*\verbseta{aaa}
  \renewcommand*\verbsetb{bbb}
}


\begin{document}

This is a document.
  \verbset[a=ccc,b=ddd]
  \begin{env}\end{env}

  \begin{env}\end{env}

\end{document}

So I'm setting the default value for \verbseta and \verbsetb. At first I'm setting those two variables to 'ccc' and 'ddd' for the first environment. But then the values stay 'ccc' and 'ddd' for the second environment too. Why is that, if I'm explicitly renewing the commands to default in the newenvironment definition.

Basically what I would like, is exactly the same code, except that the two variables would only be set for the first environment - for the second, they would fall back to default.

I would like to reset the values for each environment.

How can I do that?

[josephwright]

You seem to want an optional argument to the environment itself

Code: Select all

    \documentclass{article}
    \usepackage{keyval}
    \makeatletter
    \newcommand*\verbseta{aaa}
    \newcommand*\verbsetb{bbb}
    \define@key{verbset}{a}{\renewcommand*\verbseta{#1}}
    \define@key{verbset}{b}{\renewcommand*\verbsetb{#1}}
    \makeatother
    \newenvironment{env}[1][]
    {
      \setkeys{verbset}{#1}%
      Arguments: a = {\verbseta} ; b = {\verbsetb}%
    }
    {}


    \begin{document}

    This is a document.
      \begin{env}[a=ccc,b=ddd]\end{env}

      \begin{env}\end{env}

    \end{document}

[eleanor]

Thank you. Works like a charm.