Issue #12136 has been updated by Niko Dittmann.


It's this commit: https://github.com/ruby/ruby/blob/7fa21558051e5412dcb790f528e392476edd4389/lib/ostruct.rb

By defining the getters and setters lazily the Kernel instance methods shine through and #method_missing doesn't kick in.

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Bug #12136: OpenStruct.new(format: :bar).send :format # => too few arguments
https://bugs.ruby-lang.org/issues/12136#change-57243

* Author: Niko Dittmann
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-linux]
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
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#send(:format) to an OpenStruct with a field named :format raises an ArgumentError in Ruby 2.3.0:

~~~
OpenStruct.new(format: :bar).send :format
ArgumentError: too few arguments
~~~

It works as expected in ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-linux] and with any other method name I tried:

~~~
OpenStruct.new(f: :bar).send :f
=> :bar
~~~

String or Symbol in the OpenStruct definition and as argument of #send make no difference.



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