Install packages (-P option) listed in a file?

[Jim Garrison]

My Google-fu seems to be weak this morning. 

Does the -P option to the installer support reading packages to be installed from a file instead of directly from the command line argument? If so, what's the syntax (I tried -P@filename).  Remember this has to run in a Windows cmd shell, so solutions like

    setup-x86.exe -P$(paste -d, -s filename)

are not allowed :-)

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