gistfile1.txt

iex(4)> foo = "test"
"test"
iex(5)> invoker   = Regex.compile("insert var here #(foo)")    
** (ArgumentError) Got FunctionClauseError with message "no function clause matching in Inspect.Regex.__impl__/1" while inspecting %{__struct__: Regex, opts: "",
 re_pattern: {:re_pattern, 1, 0, 0,
  <<69, 82, 67, 80, 119, 0, 0, 0, 0, 0, 0, 0, 81, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 105, 0, 111, 0, 0, 0, 1, 0, 0, 0, 64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...>>},
 source: "insert var here #(foo)"}
** (IEx.Error) error when printing EXIT message: :function_clause

=ERROR REPORT==== 1-Jun-2014::11:24:04 ===
Error in process <0.79.0> with exit value: {function_clause,[{'Elixir.String.Chars.List','__impl__',[target],[{file,"lib/string/chars.ex"},{line,43}]},{'Elixir.String.Chars','impl_for!',1,[{file,"lib/string/chars.ex"},{line,3}]},{'Elixir.String.Chars',to_string,1,[{file...