Issue #6686 has been reported by ko1 (Koichi Sasada).

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Bug #6686: set_trace_func accepts one argument.
https://bugs.ruby-lang.org/issues/6686

Author: ko1 (Koichi Sasada)
Status: Open
Priority: Normal
Assignee: 
Category: doc
Target version: 
reporter: 
ruby_version: 


http://doc.ruby-lang.org/ja/1.9.3/method/Kernel/m/set_trace_func.html
を見ると，

  set_trace_func {|event, file, line, id, binding, klass| ... } -> Proc

という使い方があるのですが，これを書いてみると


  set_trace_func {|event, file, line, id, binding, klass| p event }
  #=>
  ruby 2.0.0dev (2012-07-02 trunk 36265) [i386-mswin32_100]
  t.rb:1:in `set_trace_func': wrong number of arguments (0 for 1) (ArgumentError)
  	from t.rb:1:in `<main>'

と怒られました．






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