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How can I make a conditional in my custom documentclass (based on article) for when the document is only one page long?

I need this because when it is only one page, I don't want to put the page number in the footer (but if there is multiple pages, I do want the page number on the first page—so it's not simply a matter of giving the first page a numberless footer).

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1 Answer

up vote 6 down vote accepted

Here is one option, using a combination of refcount and lastpage:

\documentclass{article}
\usepackage{lipsum}% http://ctan.org/pkg/lipsum
\usepackage{lastpage}% http://ctan.org/pkg/lastpage
\usepackage{refcount}% http://ctan.org/pkg/refcount
\makeatletter
\let\oldenddocument\enddocument
\renewcommand{\enddocument}{%
  \ifnum\getpagerefnumber{LastPage}=1\pagestyle{empty}\fi%
  \oldenddocument
}
\makeatother
\begin{document}
\lipsum[1-7]
\end{document}​

The idea is to check the value of the last page's number in an expandable form using \getpagerefnumber of the LastPage label (offered by lastpage). I doubt whether pageslts is required here.

I've used \pagestyle{empty}, but you could change this to whatever page style you want to. For example, if you're using fancyhdr and you want to define a footer-less page style that still contains a header.

lipsum is just for dummy text, Lorem Ipsum style. Here's a two-page output (the above MWE):

enter image description here

Here's a one-page output:

enter image description here

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Thanks! How would I change the conditional to not, so that it only sets \fancyfoot[R]{\small \thepage\ of \pageref{LastPage}} when its not 1? I tried != and that isn't it. –  Mk12 Jun 27 '12 at 23:06
1  
@Mk12: I would set the default have the footer \fancyfoot[R]{\small \thepage\ of \pageref{LastPage}} and then keep my original conditional to remove it for the first page. \ifnum\getpagerefnumber{LastPage}=1\fancyfoot{}\fi. In general, for != conditioning, you could use \ifnum<num1>=<num2>\else<!= clause>\fi. Also see the etoolbox package documentation for more on conditional statements. –  Werner Jun 27 '12 at 23:13
    
Okay, I'll leave it like that then. Thanks. –  Mk12 Jun 27 '12 at 23:18
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