CLI combination of cligen choice and expand dbvar gives ambiguous command

[olofhagsand]

Clispec example:

    <name:string choice:foobar>;
    <name:string expand_dbvar("candidate","/clixon-example:table/parameter/name")>;

Set symbol:

cli> set table parameter foobar
cli> foobar
CLI syntax error: "foobar" is ambiguous

Somewhat obscure