How do I define a custom verbatim command? [duplicate]

Question

I'm not quite sure how to describe this, but I want to create a custom command that treats its input as verbatim and allows some control of the output.

In pseudocode, I want:

\newcommand{\code}[1]{\verb{!#1!}}
\newcommand{\samp}[1]{{\normalfont\textsl{\verb!#1!}}}

(But that obviously doesn't work)

newverbs gets me close to what I need, but e.g.

\RequirePackage{newverbs}
\newverbcommand{\code}{}{}

requires \code!~! rather than \code{~}

Answer 1

I prepared something using the listings package. You can adjust the appearance by customizing the \lstset and \lstdefinestyle commands. See the documentation for further information.

\documentclass{standalone}
\usepackage{xcolor}
\usepackage{listings}
\lstset{
    basicstyle=\color{red}\itshape
}
\lstdefinestyle{inline}{
    columns=fullflexible,
    breaklines=false
}
\newcommand{\code}[1]{\lstinline[style=inline]!#1!}
\begin{document}
Here is some \code{verbatim} text.
\end{document}

The output will looks something like this

Answer 2

This will give inline conversion of the argument to catcode 12 tokens, except for spaces and percents (%), which it still takes as ignore-the-rest-of-the-line-characters. Thus, it will wrap. But what it will not do is honor linefeeds in the argument. But as an inline command, you wouldn't want it to.

As Joseph Wright points out, unbalanced braces will also break this version.

\documentclass{article}
\usepackage[T1]{fontenc}
\def\fauxverb#1{\textsl{\detokenize{#1}}}
\begin{document}
This is \fauxverb{\verbatim} text.
\end{document}