format table with strutils `%`

[enthus1ast]

what is the nicest way you know to make this work:
    
    
    import strutils
    echo "$foo, $baa" % {"foo": "foofoo", "baa": "baabaa"}
    # foofoo, baabaa
    
    
    
    Run

also, should this maybe be possible in standard Nim? This would be so 
convenient!