init commit

lib/clj_elixir/printer.ex

@@ -36,6 +36,10 @@ defmodule CljElixir.Printer do
     do_print_str(value)
   end
 
+  @doc "Clojure-compatible str: nil→\"\", strings pass through, else print representation"
+  def str_value(nil), do: ""
+  def str_value(value), do: print_str(value)
+
   # Check if IPrintWithWriter is compiled and implemented for this value
   defp protocol_implemented?(value) do
     case Code.ensure_loaded(CljElixir.IPrintWithWriter) do