Problems when trying to call a particular pdf by variable name about pdfoverlay HOT 8 CLOSED

Hi @chedgala ,

Not ridiculous, but I haven't built in a way to do this.

The good news is that it's very easy for you to add this yourself by generating a variant macro that expands its argument once (or more times if you need). You could then make a LaTeX macro for your new expanding variant if you needed it (using \NewDocumentCommand).

Try this:

\documentclass{article}

\newcommand*{\name}{example-image}

\usepackage{pdfoverlay}

\ExplSyntaxOn
\cs_generate_variant:Nn \pdfoverlay_set_pdf:n { o }
\pdfoverlay_set_pdf:o { \name.pdf }
\ExplSyntaxOff

\begin{document}
\null
\end{document}

If you needed a macro that expands its argument more than once you can use:

\ExplSyntaxOn
\cs_generate_variant:Nn \pdfoverlay_set_pdf:n { x }
\pdfoverlay_set_pdf:x { \name.pdf }
\ExplSyntaxOff

And if you needed a LaTeX macro, you can use:

\ExplSyntaxOn
\cs_generate_variant:Nn \pdfoverlay_set_pdf:n { o }
\NewDocumentCommand \pdfoverlaySetPDFo { m }
  {
    \pdfoverlay_set_pdf:o { #1 }
  }
\ExplSyntaxOff
\pdfoverlaySetPDFo{\name.pdf}

from pdfoverlay.

Thank you very much for this. I will try this and let you know.

from pdfoverlay.

Another option if you store the entire filename in \name is to use V variant function. I think this is slightly more efficient and correct expl3 than the o variant:

\documentclass{article}

\newcommand*{\name}{example-image.pdf}

\usepackage{pdfoverlay}

\ExplSyntaxOn
\cs_generate_variant:Nn \pdfoverlay_set_pdf:n { V }
\pdfoverlay_set_pdf:V \name
\ExplSyntaxOff

\begin{document}
\null
\end{document}

from pdfoverlay.

I used the second method. Much neater. Thank you very much!

from pdfoverlay.

@chedgala , can you please check if the lastest changes to master work for you with your original code and no workarounds?

from pdfoverlay.

Hi @dcpurton. Sorry the late response. I'm on "vacation". I'm working in overleaf, so I don't know if it automatically load the last version of your package.

Anyway, I'm trying the following codes with no results.

% \newcommand*{\namepdf}{Formato_azul}
% \pdfoverlaySetPDF{\namepdf.pdf}

\newcommand*{\namepdf}{Formato_azul.pdf}
\pdfoverlaySetPDF{\namepdf}

No one is working.

from pdfoverlay.

Ah, I haven't released it. You would have to check it out of GitHub. And overleaf only rarely gets updates.

from pdfoverlay.

I think it's likely OK, so I'll do a release to CTAN. Eventually it will get to overleaf, but they usually only update once a year.

You could also upload the new style file to you project directory in overleaf.

from pdfoverlay.