add cmd line arg --bypass-list

I tried to add a new cmd line arg to wkhtmltopdf.exe called --bypass-list
You can give a comma separated list of addresses for which the given proxy should be bypassed.

Unfortunately wkhtmltopdf.exe crashes at runtime when called like this:
wkhtmltopdf.exe -p "myproxy:8081" --bypass-proxy "myspecialhost" "http://mywebpage/action?show" "screenshot.pdf"

Could anyone help in this matter!?