Trace basics

Thomas Fee <>
Fri Feb 28 09:48:22 CET 2003

Can someone explain why
    erlang:trace (self(), true, [])
gets a badmatch but
    erlang:trace (all, true, [])
would be OK?

The doc says the 1st argument is a PidSpec which is either a pid for a 
local process, or an atom like existing, new, all, etc.

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