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redbug

2.1.0
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Erlang Tracing Debugger

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redbug src redbug_dbg.hrl
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src/redbug_dbg.hrl 

%% a debug macro, cause redbugging redbug is difficult.



-compile([{nowarn_unused_function, [{dbg, 1}]}]).

dbg(Z) -> io:fwrite(standard_error, "~n~p:~w ~s:~s: ~p~n", Z),

          case hd(Z) of error -> error(tl(Z)); _ -> Z end.

-define(DBG(Tag, X), (fun(_X) -> dbg([Tag, ?LINE, ?MODULE, ?FUNCTION_NAME, _X]), _X end)(X)).