\restoregeometry from inside afterpage

Question

I want to create a twoside article as a booklet where the first page is centered, and the rest is not. Using \newgeometry and restoregeometry within the afterpage macro doesn't work for some reason. Here's a minimal (non-)working example:

\documentclass[11pt,twoside,a5paper]{article}
\newlength{\marg}
\setlength{\marg}{1in}
\usepackage[paper=a5paper,twoside,bottom=\marg,top=\marg,left=\dimexpr\marg-.4in\relax,right=\marg]{geometry}
\usepackage{afterpage,lipsum}

\title{Some Booklet}
\author{Me \and Myself \and I}

\begin{document}
\newgeometry{margin=\marg}
\maketitle
\afterpage{\clearpage\restoregeometry}
Here is some text that will still be on the first page. As soon as the page breaks,
there should be a new (resp. old) twoside geometry, with the text continuing freely.
But it doesn't work! %(ノ°Д°）ノ︵ ┻━┻
\lipsum[1-6]
\end{document}

Does someone know why this does not work?

Answer 1

TeX line breaking happens before page breaking, so you need to know the line width before the paragraph is broken into lines, this means you need to know which page the text will fall on. With a bit of hand work you can however force the desired output.

\documentclass[11pt,twoside,a5paper]{article}
\newlength{\marg}
\setlength{\marg}{1in}
\usepackage[paper=a5paper,twoside,bottom=\marg,top=\marg,left=\dimexpr\marg-.4in\relax,right=\marg]{geometry}
\usepackage{afterpage,lipsum}

\title{Some Booklet}
\author{Me \and Myself \and I}

\begin{document}
\newgeometry{margin=\marg}
\maketitle
Here is some text that will still be on the first page. As soon as the page breaks,
there should be a new (resp. old) twoside geometry, with the text continuing freely.
But it doesn't work! %(ノ°Д°）ノ︵ ┻━┻
\lipsum[1]

% first bit of paragraph 2  
Nam dui ligula, fringilla a, euismod sodales, sollicitudin
vel, wisi. Morbi auctor lorem non justo. Nam lacus libero,
pretium at, lobortis vitae, ultricies et, tellus. Donec
aliquet, tortor sed accumsan bibendum, erat ligula aliquet{\parfillskip=0pt\par}

\restoregeometry
%\lipsum[2]

% second bit of paragraph 2
\noindent magna, vitae ornare odio metus a mi. Morbi ac orci et nisl
hendrerit mollis. Suspendisse ut massa. Cras nec ante. Pellentesque a
nulla. Cum sociis natoque penatibus et magnis dis parturient montes,
nascetur ridiculus mus. Aliquam tincidunt urna. Nulla ullamcorper
vestibulum turpis. Pellentesque cursus luctus mauris.



\lipsum[3-6]


\end{document}