Default font sizes do not work with new paper size option

Question

I wonder why the default font sizes won't work in the following modified class file.

\RequirePackage{filecontents}
\begin{filecontents}{example.cls}
\ProvidesClass{example}
\NeedsTeXFormat{LaTeX2e}[1996/06/01]%           
\LoadClass{article}
\DeclareOption{folio}{
    \setlength{\paperheight}{330.2mm}%
    \setlength{\paperwidth}{215.9mm}%
}
\DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}
\ProcessOptions\relax

\end{filecontents}

\documentclass
%[10pt]
%[11pt, folio]
[12pt,folio]
{example} 
\usepackage{lipsum}

\begin{document}
\lipsum  
\end{document}

I tried the suggestion in How to set default font size in latex cls file?

\RequirePackage{filecontents}
\begin{filecontents}{example.cls}
\ProvidesClass{example}
\NeedsTeXFormat{LaTeX2e}[1996/06/01]%           


\def\@@ptsize{12pt}
\DeclareOption{10pt}{\def\@@ptsize{10pt}}
\DeclareOption{11pt}{\def\@@ptsize{11pt}}
\DeclareOption{12pt}{\def\@@ptsize{12pt}}
\LoadClass[\@@ptsize]{article}
\DeclareOption{folio}{
    \setlength{\paperheight}{330.2mm}%
    \setlength{\paperwidth}{215.9mm}%
}

\DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}
\ProcessOptions\relax

\end{filecontents}

\documentclass
%[10pt]
%[11pt, folio]
[10pt,folio]
{example} 
\usepackage{lipsum}

\begin{document}
\lipsum  
\end{document}

but I get an error.

! LaTeX Error: \RequirePackage or \LoadClass in Options Section.

I tried putting all \DeclareOptions after the \LoadClass command but I am not seeing any effect in the document.

Edit

I should have mentioned that putting \LoadClass after \ProcessOptions, as in the answer by Werner has the effect of the paper size folio option not working.

score 2 · Accepted Answer · answered Oct 09 '19 at 03:54

2

You need to load the class only after you've processed the options:

\begin{filecontents}[overwrite]{example.cls}
\ProvidesClass{example}
\NeedsTeXFormat{LaTeX2e}
\DeclareOption{folio}{%
  \setlength{\paperheight}{330.2mm}%
  \setlength{\paperwidth}{215.9mm}%
}
\DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}
\ProcessOptions
\LoadClass{article}
\end{filecontents}

\documentclass
  [12pt,folio]
  {example} 
\usepackage{lipsum}

\begin{document}
\lipsum  
\end{document}

answered Oct 09 '19 at 03:54

Werner

603,163

This has the effect of the paper size option not working though. I am sorry that I missed that part in my question. I should edit it now. – hpesoj626 Oct 09 '19 at 11:24
1

@hpesoj626: Changes are applied to \paperheight and \paperwidth. However, if your plan is to change the page dimensions, they won't have any effect in the preamble. See What is the difference between \paperheight, \paperwidth and \pdfpageheight, \pdfpagewidth? Instead, you should try to set \pdfpagewidth and \pdfpageheight if you're using pdfLaTeX. – Werner Oct 09 '19 at 15:20
That resolved the problem. Thank you for your answer and your link! – hpesoj626 Oct 10 '19 at 00:38

Default font sizes do not work with new paper size option

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1 Answers1