ri aliased-method does not show useful information

[znz]

For example, https://docs.ruby-lang.org/en/2.5.0/Array.html#method-i-to_s says Alias for: inspect, but ri 'Array#to_s' does not show such information.

%  ri 'Array#inspect' | cat
= Array#inspect

(from ruby core)
------------------------------------------------------------------------------
  ary.inspect  -> string
  ary.to_s     -> string

------------------------------------------------------------------------------

Creates a string representation of self.

  [ "a", "b", "c" ].to_s     #=> "[\"a\", \"b\", \"c\"]"


%  ri 'Array#to_s' | cat
= Array#to_s

(from ruby core)
------------------------------------------------------------------------------
  to_s()

------------------------------------------------------------------------------