Add doc for a_call
and a_return
events of TracePoint
#4832
Merged
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Ruby 2.1 added
a_call
anda_return
events of TracePoint but they have no documentation.This patch adds a doc for them.
I think the feature is useful so the documentation will be useful also.
I was confused when I read debug gem code. https://github.com/ruby/debug/blob/9cdbfbf868ebf3ab167a7f76da7f2f7c7bb34f66/lib/debug/tracer.rb#L120 The documentation will avoid confusion.