Confusion with eval

Ruby
1

s = eval("%q{a\r\nabc\r\nd\r\nab\neba}")
p s #=> “a\nabc\nd\nab\neba”

Why the same is not with below?

s = eval("%q{banana\n\rapple\nmango\rapple\n\norange\rapple}")
p s
#=> “banana\n\rapple\nmango\rapple\n\norange\rapple”

why the \r not removed here? what should be the fix?

2

irb(main):001:0> eval("%q{\r\n-\n\r}")
=> “\n-\n\r”

\r\n is converted into \n but \n\r is not.