Issue #9811 has been updated by Tomoyuki Chikanaga.

Backport changed from 2.0.0: DONTNEED, 2.1: REQUIRED to 2.0.0: DONTNEED, 2.1: DONE

r45858, r45859, r45860, r45861 and r46638 were backported into `ruby_2_1` branch at r46661.

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Bug #9811: Numeric#step ignores `to` silently by keyword arguments.
https://bugs.ruby-lang.org/issues/9811#change-47570

* Author: Nobuyoshi Nakada
* Status: Closed
* Priority: Normal
* Assignee: 
* Category: core
* Target version: current: 2.2.0
* ruby -v: r45860
* Backport: 2.0.0: DONTNEED, 2.1: DONE
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Numeric#stepにキーワード引数を指定すると、終了値が無視されます。
無効なキーワードでもエラーになりません。

~~~ruby
1.step(10, foo: nil)
~~~





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