add_js results in "Incorrect first char in NameObject:"

[mike4420]

Replace this: What happened? What were you trying to achieve?

Environment

Which environment were you using when you encountered the problem?

$ python -m platform
Linux-5.19.0-kali2-amd64-x86_64-with-Kali-kali-rolling-kali-rolling

$ python -c "import PyPDF2;print(PyPDF2.__version__)"
2.11.1

Code + PDF

This is a minimal, complete example that shows the issue:

from PyPDF2 import PdfFileWriter
writer=PdfFileWriter()
writer.addBlankPage(width=200, height=200)
writer.add_js("this.print({bUI:true,bSilent:false,bShrinkToFit:true});")
with open("output.pdf", "wb") as output_stream:
	writer.write(output_stream)

$ ./genpdf.py 
Incorrect first char in NameObject:((this.print({bUI:true,bSilent:false,bShrinkToFit:true});))

Traceback

[pubpub-zz]

The text was wrongly inserted as a NameObject, fixed in PR #1431

[MartinThoma]

Fixed by #1439