Previous changes to this file stopped directly processing CL args to
stop batch `for` from interpolating batch reserved characters needed in
arguments like URLS. In doing so, we relied on `for` for an easy
"split" operation, however this incorrectly splits paths with spaces in
certain cases. Processing everything ourselves with manual looping via
`goto` statements allows for full control over CL parsing and handling
of both paths with spaces and reserved characters.
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