[ruby-core:98889] [Ruby master Feature#16971] weak_ref&.some_method should behave like object&.some_method

Issue #16971 has been updated by jeremyevans0 (Jeremy Evans).

Backport deleted (2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN)
ruby -v deleted (ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-linux])
Tracker changed from Bug to Feature

This isn't a bug, it is expected that only `nil` skips a method call when you use `&.`.  Switching to feature request.

----------------------------------------
Feature #16971: weak_ref&.some_method should behave like object&.some_method
https://bugs.ruby-lang.org/issues/16971#change-86264

* Author: kwerle (Kurt Werle)
* Status: Open
* Priority: Normal
----------------------------------------
The following patterns mean basically the same thing and should behave the same:
``` ruby
weak_ref = WeakRef.new(some_object)
...
weak_ref.some_method if weak_ref.weakref_alive?()
some_object.some_method if some_object.present?
```

The some_object predicate got cleaned up by using &.some_method.  It would be super clean if WeakRef did the same.
``` ruby
weak_ref = WeakRef.new(some_object)
...
weak_ref&.some_method # should not raise WeakRef::RefError
```





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