[texhax] minipage conditional

[Heiko Oberdiek]

On Tue, Jun 21, 2011 at 05:49:42PM +1000, Vafa Khalighi wrote:

> The minipage environment accepts b, t, and few others as the position of the
> minipage. I want \test macro return "true" if it is used inside minipage
> with b position and otherwise return "false".

\documentclass{article}

\makeatletter
\newif\if at test

\newcommand*{\org at iiiminipage}{}
\let\org at iiiminipage\@iiiminipage
\def\@iiiminipage#1{%
  \in@{b}{#1}%
  \ifin@
    \@testtrue
  \else
    \@testfalse
  \fi
  \org at iiiminipage{#1}%
}

\def\test{\if at test true\else false\fi}
\makeatother

\begin{document}
\begin{minipage}[b]{.5\linewidth}
\test
\end{minipage}

\begin{minipage}{.5\linewidth}
\test
\end{minipage}
\end{document}

Yours sincerely
  Heiko Oberdiek