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#!/usr/bin/perl

...
    }
  else { push @buildcode, qq($have = "$ref";); }
  }

("orig", { a => { b => ["c", "d"], e => [["f"]] } })
("augment", { a => { b => ["c", "d"], e => [["g"]] } })
("delta", { a => { e => [["g"]] } })