\documentstyle[ecluntab]{article}
\begin{document}

\newcommand{\test}{test test test test test test
test test test test test test test test }
\newcommand{\everyuntabify}{\setlength{\parindent}{1cm}}

\untablineno=-1
\begin{untabify}
	This    is 	a test?`.
 	This	is   	a test?`.
	This    is 	a test?`.
\end{untabify}

\test\test\test

\untablineno=101
\begin{untabify*}
	This    is 	a test?`.
 	This	is   	a test?`.
\end{untabify*}

\test\test\test

\begin{itemize}
\item \test\test\test

\begin{untabify}
	This    is 	a test?`.
 	This	is   	a test?`.
\end{untabify}

\item \test\test\test
\end{itemize}

\test\test\test

\begin{quotation}
\test\test\test

\untablineno=-1
\def\untablinenowidth{0mm}
\def\everyuntabify{\parindent=0mm}

\begin{untabify*}
	This    is 	a test?`.
 	This	is   	a test?`.
\end{untabify*}

\test\test\test
\end{quotation}



\end{document}

