<p>The issue with <code>n = rpc->scan(c, "S*S", &group, &var);</code> was due to a bug in <code>ctl</code> module, using <code>kamcmd</code> revealed that. Using <code>kamctl</code> with <code>jsonrpcs</code> module was not affected. The bug is fixed now in master and it will be backported.</p>
<p>Besides using the <code>*</code> specifier for optional params, your patch in this PR was adjusted so that the <code>cfg.get</code> for a group returns a structure with field names and values. All are in master now.</p>

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