@ifpackageloaded syntax

Asked Aug 23 '16 at 20:33

Active Aug 23 '16 at 20:33

Viewed 29 times

I have the following call to the \hypersetup macro:

\hypersetup{
    pdfauthor={My Name},
    pdftitle={Title},
    pdfkeywords={LaTeX, PDF},
    pdfcreator={PDFLaTeX},
    pdfproducer={PDFLaTeX},
}

Which is only usable if I have the hyperref package loaded. So I tried to wrap it under conditionals:

\@ifpackageloaded{hyperref}
{\hypersetup{
    pdfauthor={My Name},
    pdftitle={Title},
    pdfkeywords={LaTeX, PDF},
    pdfcreator={PDFLaTeX},
    pdfproducer={PDFLaTeX},
}}
{ }

and I get the following compilation error:

! You can't use `\spacefactor' in vertical mode.
\@->\spacefactor 
                 \@m {}
l.19 \@

asked Aug 23 '16 at 20:33

Jason

\makeatletter\@ifpackageloaded{packagename}{true}{false}\makeatother -- You need this syntax only in a document, in a .sty or .cls file it's not necessary! – Aug 23 '16 at 20:34
2

You need to wrap the conditional between a \makeatletter...\makeatother pair. See What do \makeatletter and \makeatother do? – Werner Aug 23 '16 at 20:35

@ifpackageloaded syntax

0 Answers0