[ruby/open3] Use RbConfig's 'host_os'
RUBY_PLATFORM on JRuby is always 'java' so it does not indicate the host OS.
https://github.com/ruby/open3/commit/d2308040e6
Added by headius (Charles Nutter) almost 4 years ago
[ruby/open3] Use RbConfig's 'host_os'
RUBY_PLATFORM on JRuby is always 'java' so it does not indicate
the host OS.
https://github.com/ruby/open3/commit/d2308040e6