[ruby-core:115500] [Ruby master Bug#20003] Array#rassoc does not preform implicit conversion

Issue #20003 has been updated by mame (Yusuke Endoh).


Thanks, I will merge it.

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Bug #20003: Array#rassoc does not preform implicit conversion 
https://bugs.ruby-lang.org/issues/20003#change-105429

* Author: temabolshakov (Tema Bolshakov)
* Status: Open
* Priority: Normal
* ruby -v: 3.2.2
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
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There is a difference between behaviour of Array#assoc and Array#rassoc. The first one performs implicit conversion (calls #to_ary) while the former does not. 

``` ruby
class ArrayConvertible
  def initialize(*values)
    @values = values;
  end

  def to_ary
    @values
  end
end

s1 = [1, 2]
s2 = ArrayConvertible.new(2, 3)
a = [s1, s2]
```

The `a.assoc(2)` call returns `[2, 3]` as expected. However, `a.rassoc(3)` returns `nil`

**Expected behaviour**: `a.rassoc(3)` returns `[2, 3]` in such cases.



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