Issue #10797 has been reported by Tsuyoshi Sawada.

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Feature #10797: `inherit` parameter for `..._defined?` methods in Module
https://bugs.ruby-lang.org/issues/10797

* Author: Tsuyoshi Sawada
* Status: Open
* Priority: Normal
* Assignee: 
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`Module#const_defined?` takes an optional argument `inherit` with default value `true` to control whether to consider inheritance. But the following methods do not:

* `Module#method_defined?`
* `Module#private_method_defined?`
* `Module#protected_method_defined?`
* `Module#public_method_defined?`

They only allow what would correspond to `inherit = true`. I request an optional argument `inherit` with default value `true` to be added to these methods to control whether inheritance should be considered.



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