```
\documentclass{article}
\usepackage{pst-barcode}

\begin{document}
\begin{pspicture}
  \psbarcode{\input{\jobname.tex}}{}{qrcode}
\end{pspicture}
\end{document}

```

I tried placing `\expandafter`s before and after `\psbarcode`, but no juice.
It can handle control sequences just fine, but it will expand them.
How can I get it to not expand its argument at all (save, of course, `\input`) and take it verbatim?

The encoding of this particular document is

![enter image description here](https://i.stack.imgur.com/TOzN8.png)