[texhax] getting to global scope from within a group (latex/ifthen)
Boylan, Ross
Ross.Boylan at ucsf.edu
Sat Nov 15 03:59:59 CET 2014
I'm trying to define a macro that behaves differently the first time its used compared to later uses. But I tend to use the macro inside of blocks, and so the changes I make don't last until the next time I invoke the macro.
How can I get around this?
I know \outer works for plain TeX definitions, but I'm updating some symbol buried inside latex macros, in this case the \setboolean macro is resetting something.
Here's a little example. Because the first \testit is inside a group, the second \testit acts as if it is being invoked for the first time. My actual useage is buried in several layers of macros and environments.
\documentclass{article}
\usepackage{ifthen}
\newcommand{\testit}{Random text.
\ifthenelse{\boolean{blahblah}}{I have already spoken.}{I speak at length.\setboolean{blahblah}{true}}}
\begin{document}
\newboolean{blahblah}
\begingroup
\testit
\endgroup
\testit
\testit
\end{document}
Thanks.
Ross Boylan
P.S. I'm using \begingroup so I can issue \centering to center a table within a float. Is there a better way to center the table? The beginning and end of the table are produced by different macros.
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