ruby - Whitespaces not escaped by /\s/ -

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I am working with some strings that behave in a weird way.

Some spaces are not recognized in Ruby in a regex / s by 

  "175 75 16C 101/99 R" .gsub (/ \ s / , 'X') = & gt; "175 x75 x 16 c x101 / 99 xR"

It is expected that every white spot is changed to 'X'

I have a UTF-8 On string but this is not working either I need a regedge that matches every type of white spot in my string and converts them to whitespace regularly.

Edit: 

  str.encode ('utf-8') Chars.each {| C | Puts c.ord} 49 55 53 160 32 55 53 160 160 32 49 54 67 160 32 49 48 49 47 57 57 160 160 160 32 82 
 
  [\ t \ r \ n \ f]  (only one 
 
 If your pattern contains letters with other white space, such as non-breaking spaces, you  \ s  to  \ p { Z} , which will look for Unicode  separator  character property and thus will match everyone.

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