[ruby/stringio] [DOC] Tweaks for StringIO#string= (https://github.com/ruby/stringio/pull/172)
https://github.com/ruby/stringio/commit/17ae4daf9a
[ruby/stringio] [DOC] Tweaks for StringIO#string=
(https://github.com/ruby/stringio/pull/172)
https://github.com/ruby/stringio/commit/17ae4daf9a