Text Formatting ⇒ Newcommand works but newenvironment fails to wrapfig

[yiorgosb]

I place this topic here since it is in essence a formatting issue.
I've created a newenvironment for wrapping a figure but it fails to wrap text (text overlaps figure). When I place the same code to a newcommand everything works fine and I can't figure out why.
I quote the two code excerpts below.

New envrironment

Code: Select all

Code, edit and compile here:

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\newenvironment{yfifg}[1][] { 
\begin{wrapfigure}{r}{0.2\textwidth}
         \begin{center}
            \includegraphics[width=0.18\textwidth]{images/c\thechapter /\thecntfig}
         \end{center}
         \caption{#1}
    \end{wrapfigure} 
    \stepcounter{cntfig}} {}
 
 
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Run LaTeX here

New command

Code: Select all

Code, edit and compile here:

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\newcommand{\yfig}[1]{ 
\begin{wrapfigure}{r}{0.2\textwidth}
         \begin{center}
            \includegraphics[width=0.18\textwidth]{images/c\thechapter /\thecntfig}
         \end{center}
         \caption{#1}
    \end{wrapfigure}}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Run LaTeX here

Obviously in text they are called as

Code: Select all

Code, edit and compile here:

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\begin{yfifg} {acaption} \end{yfifg}
and
\fig{acaption}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Run LaTeX here

respectively.


PS: (A simple question for not open a new topic) both environment and command may accept only one default value?