`IO#close_on_exec=` returns different value when called with `send, __send__, public_send` or not
$ ruby -v -e 'p(STDIN.close_on_exec = 42)' ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-darwin20] 42
$ ruby -v -e 'p(STDIN.__send__ :close_on_exec=, 42)' ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-darwin20] nil
Is this an intentional behavior?
ruby/spec has the test case, But I can't think any benefit this different returning value 🤔
Updated by Eregon (Benoit Daloze) about 2 months ago
The PR looks good to me.
As you may know
recv.foo= value always return
value, no matter what the
foo= method returns.
So in general the return value of assignment methods might differ and is probably best to be ignored.