As you might know, it's now possible to trace Erlang functions by using the short form:

dbg:tpl(Module, Function, x).

Instead of the usual:

dbg:tpl(Module, Function, dbg:fun2ms(fun(_) -> exception_trace() end)).

I'm actually wondering if a similar short form is available for return_trace(). Something like:

dbg:tpl(Module, Function, r).

Instead of:

dbg:tpl(Module, Function, dbg:fun2ms(fun(_) -> return_trace() end)).

The source code in the dbg module seems to suggest not:

new_pattern_table() ->
    PT = ets:new(dbg_tab, [ordered_set, public]),
    ets:insert(PT, 
           {x, 
        term_to_binary([{'_',[],[{exception_trace}]}])}),
    ets:insert(PT, 
           {exception_trace, 
        term_to_binary(x)}),
    PT.

But I might be wrong. Do you know of any?