--sync-method isn't documented to take an argument

The various command-line utilities that have recently acquired a
--sync-method option document it like this:

<term><option>--sync-method</option></term>

But that is not how we document options which take an argument. We do
it like this:

<term><option>--pgdata=<replaceable>directory</replaceable></option></term>
<term><option>--filenode=<replaceable>filenode</replaceable></option></term>

etc.

This one should be something like this:

<term><option>--sync-method=<replaceable>method</replaceable></option></term>

-- 
Robert Haas
EDB: http://www.enterprisedb.com